WAN Technologies Final Exam CH 1-9

Questão 1 de 186

1

Refer to the exhibit. Which type of ISP connectivity to the service provider edge is being used by company A?

Selecione uma das seguintes:

multihomed
dual-multihomed
dual-homed
single-homed

Explicação

Questão 2 de 186

1

Refer to the exhibit. Which Cisco Enterprise Architecture module is shown?

Selecione uma das seguintes:

remote
campus infrastructure
service provider edge
enterprise campus
enterprise edge

Explicação

Questão 3 de 186

1

The network design for a college with users at five sites is being developed. Where in the campus network architecture would servers used by all users be located?

Selecione uma das seguintes:

data center
services
enterprise edge
access-distribution

Explicação

Questão 4 de 186

1

Which network architecture functions through a combination of technologies that include wired, wireless, security, and more?

Selecione uma das seguintes:

Cisco Borderless
Cisco Enterprise Edge
Cisco Enterprise Branch
Cisco Enterprise Campus

Explicação

Questão 5 de 186

1

Which network module is the fundamental component of a campus design?

Selecione uma das seguintes:

services module
enterprise edge
data center
access-distribution module

Explicação

Questão 6 de 186

1

What is one advantage to designing networks in building block fashion for large companies?

Selecione uma das seguintes:

increased network access time
failure isolation
redundancy
mobility

Explicação

Questão 7 de 186

1

A network engineer wants to redesign the wireless network and make use of wireless network controllers that manage the many deployed wireless access points. In which network design module of the campus network architecture would the centralized wireless network controllers be found?

Selecione uma das seguintes:

access-distribution
data center
services
enterprise edge

Explicação

Questão 8 de 186

1

Refer to the exhibit. Which type of Cisco hierarchical LAN design model is used at school site 1?

Selecione uma das seguintes:

three-tier
7 layer
two-tier collapsed core
3 layer

Explicação

Questão 9 de 186

1

Which layer of the Cisco Collaboration Architecture contains unified communications and conference software such as Cisco WebEx Meetings, WebEx Social, Cisco Jabber, and TelePresence?

Selecione uma das seguintes:

applications and devices
services module
enterprise WAN
service provider edge

Explicação

Questão 10 de 186

1

Why would a company want network engineers to adhere to structured engineering principles when designing networks?

Selecione uma das seguintes:

The resiliency of a network depends on being able to modify portions of the network, add services, or increase network capacity without adding new hardware devices.
A hierarchical network model is a useful high-level tool for designing a reliable network infrastructure, although it increases the complexity of network design
The network can be easily designed because of the separation of the various functions that exist on a network into modules.
The network is not expected to remain available under abnormal conditions such as extreme traffic loads or denial-of-service events.

Explicação

Questão 11 de 186

1

What is creating a new challenge for IT departments by changing the border of the enterprise network?

Selecione uma das seguintes:

energy costs
tablets
access layer switching
company-owned desktops

Explicação

Questão 12 de 186

1

Which approach in networking allows for network changes, upgrades, or the introduction of new services in a controlled and staged fashion?

Selecione uma das seguintes:

modular
static
borderless
network module

Explicação

Questão 13 de 186

1

Which Cisco technology allows diverse network devices to connect securely, reliably, and seamlessly to enterprise network resources?

Selecione uma das seguintes:

service provider edge
building distribution
Cisco AnyConnect
enterprise edge

Explicação

Questão 14 de 186

1

In which layer of the hierarchical enterprise LAN design model would PoE for VoIP phones and access points be considered?

Selecione uma das seguintes:

data link
physical
distribution
access
core

Explicação

Questão 15 de 186

1

Which network architecture combines individual components to provide a comprehensive solution allowing people to cooperate and contribute to the production of something?

Selecione uma das seguintes:

Cisco Enterprise Branch Architecture
Cisco Borderless Network Architecture
Cisco Enterprise Campus Architecture
Cisco Collaboration Architecture

Explicação

Questão 16 de 186

1

What feature is more important at the core layer than at any other hierarchical network design layer?

Selecione uma das seguintes:

aggregation of network links
QoS classification and marking
easy access of end devices
packet switching speed
data security

Explicação

Questão 17 de 186

1

What are two of the top trends that affect network architecture design? (Choose two.)

Selecione uma ou mais das seguintes:

BYOD
Internet security
internal security attacks
speed of Internet connectivity
cloud computing

Explicação

Questão 18 de 186

1

Which three network architectures have been introduced by Cisco to address the emerging technology challenges created by the evolving business models? (Choose three.)

Selecione uma ou mais das seguintes:

Cisco Borderless
Cisco Collaboration
Cisco Data Center
Cisco Enterprise Campus
Cisco Enterprise Edge
Cisco Enterprise Branch

Explicação

Questão 19 de 186

1

What are two structured engineering principles necessary for successful implementation of a network design? (Choose two.)

Selecione uma ou mais das seguintes:

modularity
resiliency
availability
security
quality of service

Explicação

Questão 20 de 186

1

What is the recommended technology to use over a public WAN infrastructure when a branch office is connected to the corporate site?

Selecione uma das seguintes:

VPN
ATM
ISDN
municipal Wi-Fi

Explicação

Questão 21 de 186

1

Which statement describes cable?

Selecione uma das seguintes:

Delivering services over a cable network requires downstream frequencies in the 50 to 860 MHz range, and upstream frequencies in the 5 to 42 MHz range
Cable subscribers may expect up to 27 Mbps of bandwidth on the upload path.
Each cable subscriber has dedicated upstream and downstream bandwidth
The cable subscriber must purchase a cable modem termination system (CMTS).

Explicação

Questão 22 de 186

1

A home user lives within 10 miles (16 kilometers) of the Internet provider network. Which type of technology provides high-speed broadband service with wireless access for this home user?

Selecione uma das seguintes:

WiMAX
municipal Wi-Fi
802.11
DSL

Explicação

Questão 23 de 186

1

Which feature is used when connecting to the Internet using DSL?

Selecione uma das seguintes:

DSLAM
CMTS
IEEE 802.16
LTE

Explicação

Questão 24 de 186

1

Which wireless technology provides Internet access through cellular networks?

Selecione uma das seguintes:

LTE
municipal WiFi
WiMAX
satellite

Explicação

Questão 25 de 186

1

Which connectivity method would be best for a corporate employee who works from home two days a week, but needs secure access to internal corporate databases?

Selecione uma das seguintes:

VPN
cable
DSL
WiMAX

Explicação

Questão 26 de 186

1

A corporation is looking for a solution to connect multiple, newly established remote branch offices. Which consideration is important when selecting a private WAN connection rather than a public WAN connection?

Selecione uma das seguintes:

data security and confidentiality during transmission
higher data transmission rate
lower cost
website and file exchange service support

Explicação

Questão 27 de 186

1

Which statement describes a characteristic of a WAN?

Selecione uma das seguintes:

WAN networks are owned by service providers
A WAN provides end-user network connectivity to the campus backbone
All serial links are considered WAN connections
A WAN operates within the same geographic scope of a LAN, but has serial links

Explicação

Questão 28 de 186

1

Which two devices are needed when a digital leased line is used to provide a connection between the customer and the service provider? (Choose two.)

Selecione uma ou mais das seguintes:

CSU
DSU
dialup modem
access server
Layer 2 switch

Explicação

Questão 29 de 186

1

A new corporation needs a data network that must meet certain requirements. The network must provide a low cost connection to sales people dispersed over a large geographical area. Which two types of WAN infrastructure would meet the requirements? (Choose two.)

Selecione uma ou mais das seguintes:

public infrastructure
Internet
satellite
dedicated
private infrastructure

Explicação

Questão 30 de 186

1

A small company with 10 employees uses a single LAN to share information between computers. Which type of connection to the Internet would be appropriate for this company?

Selecione uma das seguintes:

a broadband service, such as DSL, through their local service provider
a dialup connection that is supplied by their local telephone service provider
private dedicated lines through their local service provider
Virtual Private Networks that would enable the company to connect easily and securely with employees

Explicação

Questão 31 de 186

1

Which WAN technology establishes a dedicated constant point-to-point connection between two sites?

Selecione uma das seguintes:

leased lines
ISDN
Frame Relay
ATM

Explicação

Questão 32 de 186

1

What is a long distance fiber-optic media technology that supports both SONET and SDH, and assigns incoming optical signals to specific wavelengths of light?

Selecione uma das seguintes:

DWDM
MPLS
ISDN
ATM

Explicação

Questão 33 de 186

1

A customer needs a WAN virtual connection that provides high-speed, dedicated bandwidth between two sites. Which type of WAN connection would best fulfill this need?

Selecione uma das seguintes:

Ethernet WAN
packet-switched network
circuit-switched network
MPLS

Explicação

Questão 34 de 186

1

Which WAN technology is cell-based and well suited to carry voice and video traffic?

Selecione uma das seguintes:

ATM
Frame Relay
VSAT
ISDN

Explicação

Questão 35 de 186

1

Which equipment is needed for an ISP to provide Internet connections through cable service?

Selecione uma das seguintes:

CMTS
DSLAM
access server
CSU/DSU

Explicação

Questão 36 de 186

1

Which solution can provide Internet access to remote locations where no regular WAN services are available?

Selecione uma das seguintes:

VSAT
WiMAX
municipal Wi-Fi
Ethernet

Explicação

Questão 37 de 186

1

Which network scenario will require the use of a WAN?

Selecione uma das seguintes:

Employees need to connect to the corporate email server through a VPN while traveling.
Employees need to access web pages that are hosted on the corporate web servers in the DMZ within their building
Employees in the branch office need to share files with the headquarters office that is located in a separate building on the same campus network
Employee workstations need to obtain dynamically assigned IP addresses

Explicação

Questão 38 de 186

1

Which geographic scope requirement would be considered a distributed WAN scope?

Selecione uma das seguintes:

many-to-many
local
one-to-one
regional
global
one-to-many

Explicação

Questão 39 de 186

1

What is an advantage of packet-switched technology over circuit-switched technology?

Selecione uma das seguintes:

Packet-switched networks can efficiently use multiple routes inside a service provider network.
Packet-switched networks are less susceptible to jitter than circuit-switched networks are
Packet-switched networks usually experience lower latency than circuit-switched networks experience
Packet-switched networks do not require an expensive permanent connection to each endpoint

Explicação

Questão 40 de 186

1

What are two common high-bandwidth fiber-optic media standards? (Choose two.)

Selecione uma ou mais das seguintes:

SONET
SDH
ATM
ANSI
ITU

Explicação

Questão 41 de 186

1

What is a requirement of a connectionless packet-switched network?

Selecione uma das seguintes:

Full addressing information must be carried in each data packet
Each packet has to carry only an identifier
A virtual circuit is created for the duration of the packet delivery
The network predetermines the route for a packet

Explicação

Questão 42 de 186

1

What PPP information will be displayed if a network engineer issues the show ppp multilink command on Cisco router?

Selecione uma das seguintes:

the serial interfaces participating in the multilink
the IP addresses of the link interfaces
the link LCP and NCP status
the queuing type on the link

Explicação

Questão 43 de 186

1

In which situation would the use of PAP be preferable to the use of CHAP?

Selecione uma das seguintes:

when plain text passwords are needed to simulate login at the remote host
when a network administrator prefers it because of ease of configuration
when multilink PPP is used
when router resources are limited

Explicação

Questão 44 de 186

1

Refer to the exhibit. Which statement describes the status of the PPP connection?

Selecione uma das seguintes:

Neither the link-establishment phase nor the network-layer phase completed successfully.
Only the link-establishment phase completed successfully.
Both the link-establishment and network-layer phase completed successfully.
Only the network-layer phase completed successfully.

Explicação

Questão 45 de 186

1

Which serial 0/0/0 interface state will be shown if no serial cable is attached to the router, but everything else has been correctly configured and turned on?

Selecione uma das seguintes:

Serial 0/0/0 is down, line protocol is down
Serial 0/0/0 is administratively down, line protocol is down
Serial 0/0/0 is up, line protocol is up
Serial 0/0/0 is up, line protocol is down
Serial 0/0/0 is up (looped)
Serial 0/0/0 is up (disabled)

Explicação

Questão 46 de 186

1

A network engineer is monitoring an essential, but poor quality, PPP WAN link that periodically shuts down. An examination of the interface configurations shows that the ppp quality 90 command has been issued. What action could the engineer take to reduce the frequency with which the link shuts down?

Selecione uma das seguintes:

Issue the command ppp quality 70.
Issue the command ppp quality 100
Set the DCE interface to a lower clock rate
Use the bandwidth command to increase the bandwidth of the link

Explicação

Questão 47 de 186

1

Which three are types of LCP frames used with PPP? (Choose three.)

Selecione uma ou mais das seguintes:

link-establishment frames
link-maintenance frames
link-termination frames
link-control frames
link-negotiation frames
link-acknowledgment frames

Explicação

Questão 48 de 186

1

Which command can be used to view the cable type that is attached to a serial interface?

Selecione uma das seguintes:

Router(config)# show controllers
Router(config)# show ip interface
Router(config)# show ip interface brief
Router(config)# show interfaces

Explicação

Questão 49 de 186

1

How does PPP interface with different network layer protocols?

Selecione uma das seguintes:

by using separate NCPs
by specifying the protocol during link establishment through LCP
by encoding the information field in the PPP frame
by negotiating with the network layer handler

Explicação

Questão 50 de 186

1

Which protocol will terminate the PPP link after the exchange of data is complete?

Selecione uma das seguintes:

LCP
NCP
IPXCP
IPCP

Explicação

Questão 51 de 186

1

Which is an advantage of using PPP on a serial link instead of HDLC?

Selecione uma das seguintes:

option for authentication
option for session establishment
fixed-size frames
higher speed transmission

Explicação

Questão 52 de 186

1

At which layer of the OSI model does multiplexing take place?

Selecione uma das seguintes:

Layer 3
Layer 4
Layer 2
Layer 1

Explicação

Questão 53 de 186

1

During a PPP session establishment phase, which two messages are sent by the requested party if the options are not acceptable? (Choose two.)

Selecione uma ou mais das seguintes:

Configure-Reject
Configure-Nak
Protocol-Reject
Code-Reject
Discard-Request

Explicação

Questão 54 de 186

1

A network engineer is troubleshooting the loss of MPEG video viewing quality as MPEG video files cross a PPP WAN link. What could be causing this loss of quality?

Selecione uma das seguintes:

The compress command was used when PPP was configured on the interfaces
Link Quality Monitoring was not configured correctly on each interface.
The clock rates configured on each serial interface do not match
PAP authentication was misconfigured on the link interfaces

Explicação

Questão 55 de 186

1

Which address is used in the Address field of a PPP frame?

Selecione uma das seguintes:

a single byte of binary 11111111
a single byte of binary 10101010
the IP address of the serial interface
a single byte of binary 00000000

Explicação

Questão 56 de 186

1

Which three physical layer interfaces support PPP? (Choose three.)

Selecione uma ou mais das seguintes:

HSSI
asynchronous serial
synchronous serial
FastEthernet
GigabitEthernet
Ethernet

Explicação

Questão 57 de 186

1

Refer to the exhibit. A network administrator is configuring the PPP link between the two routers. However, the PPP link cannot be established. Based on the partial output of the show running-config command, what is the cause of the problem?

Selecione uma das seguintes:

The passwords do not match
The interface IP addresses are in different subnets
The usernames do not match
The passwords should be longer than 8 characters

Explicação

Questão 58 de 186

1

Refer to the exhibit. Based on the debug command output that is shown, which statement is true of the operation of PPP.

Selecione uma das seguintes:

A PPP session was successfully established.
Both PAP and CHAP authentication were attempted
CHAP authentication failed because of an unknown hostname.
The debug output is from router R2.

Explicação

Questão 59 de 186

1

Which three statements are true about PPP? (Choose three.)

Selecione uma ou mais das seguintes:

PPP uses LCPs to establish, configure, and test the data link connection.
PPP can use synchronous and asynchronous circuits
PPP uses LCPs to agree on format options such as authentication, compression, and error detection.
PPP can only be used between two Cisco devices.
PPP carries packets from several network layer protocols in LCPs.

Explicação

Questão 60 de 186

1

Refer to the exhibit. What type of Layer 2 encapsulation will be used for connection D on the basis of this configuration on a newly installed router:
RtrA(config)# interface serial0/0/0
RtrA(config-if)# ip address 128.107.0.2 255.255.255.252
RtrA(config-if)# no shutdown

Selecione uma das seguintes:

HDLC
PPP
Frame Relay
Ethernet

Explicação

Questão 61 de 186

1

Which two functions are provided by the Local Management Interface (LMI) that is used in Frame Relay networks? (Choose two.)

Selecione uma ou mais das seguintes:

exchange of information about the status of virtual circuits
simple flow control
mapping of DLCIs to network addresses
error notification
congestion notification

Explicação

Questão 62 de 186

1

Refer to the exhibit. A network administrator is configuring Frame Relay subinterfaces on R1. A distance vector routing protocol has also been configured. Data is routing successfully from R1 to networks that are connected to R2, R3, and R4, but routing updates between R2 and R3 are failing. What is the possible cause of this failure?

Selecione uma das seguintes:

Split horizon is preventing successful routing table updates on the multipoint link
Subinterfaces cannot be used on multipoint Frame Relay links
Multipoint Frame Relay networks cannot be used with this IP addressing scheme
Two DLCI identifiers cannot be configured on one subinterface

Explicação

Questão 63 de 186

1

What are the two major criteria that constitute the cost of a Frame Relay circuit? (Choose two.)

Selecione uma ou mais das seguintes:

local loop
required bandwidth
QoS
end-to-end connectivity
circuit management fees

Explicação

Questão 64 de 186

1

A network administrator uses the following command to configure a Frame Relay connection on a router towards the service provider:
R1(config-if)# frame-relay map ip 209.165.200.225 102 broadcast
What is the purpose of using the broadcast keyword?

Selecione uma das seguintes:

to support dynamic routing protocol updates across the link
to enable dynamic IP address-to-DLCI mapping
to support IP address to MAC address resolution for the interface in the service provider site
to enable VoIP packet transmission across the link

Explicação

Questão 65 de 186

1

Refer to the exhibit. A network administrator issues the show frame-relay map command to troubleshoot the Frame Relay connection problem. Based on the output, what is the possible cause of the problem?

Selecione uma das seguintes:

The Frame Relay map statement on the R3 router for the PVC to R2 is configured with an incorrect DLCI number.
Inverse ARP is providing false information to the R1 router.
The IP address on S0/0/1 of R3 is configured incorrectly.
The S0/0/1 interface of the R2 router has been configured with the encapsulation frame relay ietf command
The S0/0/1 interface of the R2 router is down.

Explicação

Questão 66 de 186

1

Which two Frame Relay router reachability issues are resolved by configuring logical subinterfaces? (Choose two.)

Selecione uma ou mais das seguintes:

Link-state routing protocols are unable to complete neighbor discovery
Distance vector routing protocols are unable to forward routing updates back out the incoming interface to other remote routers
Frame Relay is unable to map a remote IP address to a DLCI
LMI status inquiry messages sent to the network are not received
Inverse ARP fails to associate all IP addresses to the correct DLCIs

Explicação

Questão 67 de 186

1

Refer to the exhibit. Which two statements are correct? (Choose two.)

Selecione uma ou mais das seguintes:

The IPv4 address of interface S0/1/1 on RB is 192.168.1.2
The DLCI that is attached to the VC on RA to RB is 62.
The Frame Relay map was set by using the command frame-relay map.
The IPv4 address of interface S0/1/0 on RA is 192.168.1.2.
The DLCI that is attached to the VC on RB to RA is 62.

Explicação

Questão 68 de 186

1

The show frame-relay pvc command is best utilized to display the number for which type of packets that are received by the router?

Selecione uma das seguintes:

FECN and BECN messages
Inverse ARP messages
Inverse Neighbor Discovery messages
LMI status messages

Explicação

Questão 69 de 186

1

Why would a customer request a Frame Relay circuit with a CIR of zero?

Selecione uma das seguintes:

to have a link with reduced costs
to have a backup circuit for critical data transmissions
to have a circuit used for voice traffic
to have better QoS
to have a circuit used for network management traffic

Explicação

Questão 70 de 186

1

Which three notification mechanisms are used when congestion is present in a Frame Relay network? (Choose three.)

Selecione uma ou mais das seguintes:

BECN
DE
FECN
inverse ARP
DLCI
CIR

Explicação

Questão 71 de 186

1

A router interface connects to a Frame Relay network over a preconfigured logical circuit that does not have a direct electrical connection from end to end. Which type of circuit is being used?

Selecione uma das seguintes:

PVC
SVC
full mesh
hub and spoke
dedicated leased line

Explicação

Questão 72 de 186

1

What is an advantage of Frame Relay WAN technology compared with leased lines?

Selecione uma das seguintes:

It uses one interface to connect to several remote sites
It supports both voice and data traffic
It provides permanent dedicated capacity to the customers
It offers a guaranteed direct electrical circuit from end to end

Explicação

Questão 73 de 186

1

Which three actions can be taken to solve Layer 3 routing protocol router reachability issues when using Frame Relay? (Choose three.)

Selecione uma ou mais das seguintes:

Use a full mesh topology
Use subinterfaces
Disable split horizon
Configure static DLCI mappings
Disable Inverse ARP
Use the keyword cisco as the LMI type

Explicação

Questão 74 de 186

1

A network administrator has statically configured the LMI type on the interface of a Cisco router that is running Cisco IOS Release 11.2. If the service provider modifies its own LMI type in the future, what step must the network administrator take?

Selecione uma das seguintes:

The network administrator must statically set the LMI type to be compatible with the service provider
The network administrator simply has to verify connectivity with the provider, because the router has an LMI autosensing feature that automatically detects the LMI type
The network administrator does not have to do anything, because all LMI types are compatible with one another.
The network administrator must modify the keepalive time interval to maintain connectivity with the LMI type of the service provider.

Explicação

Questão 75 de 186

1

Which technology allows a Layer 3 IPv4 address to be dynamically obtained from a Layer 2 DLCI?

Selecione uma das seguintes:

Inverse Address Resolution Protocol
Address Resolution Protocol
Neighbor Discovery
Inverse Neighbor Discovery

Explicação

Questão 76 de 186

1

When would the multipoint keyword be used in Frame Relay PVCs configuration?

Selecione uma das seguintes:

when participating routers are in the same subnet
when using physical interfaces
when global DLCIs are in use
when multicasts must be supported

Explicação

Questão 77 de 186

1

A network administrator of a large organization is designing a Frame Relay network. The organization needs redundancy between some key sites but not all. What WAN topology should the administrator choose to meet their needs?

Selecione uma das seguintes:

partial mesh
star
extended star
full mesh

Explicação

Questão 78 de 186

1

A network engineer has issued the interface serial 0/0/1.102 point-to-point command on a router that will be communicating with another router over a Frame Relay virtual circuit that is identified by the DLCI 102. Which two commands would be appropriate for the network engineer to issue next? (Choose two.)

Selecione uma ou mais das seguintes:

frame-relay interface-dlci 102
ip address 10.1.1.10 255.255.255.252
no ip address
encapsulation frame relay
no shutdown

Explicação

Questão 79 de 186

1

Refer to the exhibit. Based on the output that is shown, what type of NAT has been implemented?

Selecione uma das seguintes:

PAT using an external interface
dynamic NAT with a pool of two public IP addresses
static NAT with a NAT pool
static NAT with one entry

Explicação

Questão 80 de 186

1

Refer to the exhibit. What is the purpose of the command marked with an arrow shown in the partial configuration output of a Cisco broadband router?

Selecione uma das seguintes:

defines which addresses can be translated
defines which addresses are allowed into the router
defines which addresses are allowed out of the router
defines which addresses are assigned to a NAT pool

Explicação

Questão 81 de 186

1

What is the purpose of port forwarding?

Selecione uma das seguintes:

Port forwarding allows an external user to reach a service on a private IPv4 address that is located inside a LAN.
Port forwarding allows users to reach servers on the Internet that are not using standard port numbers.
Port forwarding allows an internal user to reach a service on a public IPv4 address that is located outside a LAN.
Port forwarding allows for translating inside local IP addresses to outside local addresses

Explicação

Questão 82 de 186

1

Which statement accurately describes dynamic NAT?

Selecione uma das seguintes:

It provides an automated mapping of inside local to inside global IP addresses.
It dynamically provides IP addressing to internal hosts
It always maps a private IP address to a public IP address
It provides a mapping of internal host names to IP addresses.

Explicação

Questão 83 de 186

1

Which version of NAT allows many hosts inside a private network to simultaneously use a single inside global address for connecting to the Internet?

Selecione uma das seguintes:

PAT
port forwarding
dynamic NAT
static NAT

Explicação

Questão 84 de 186

1

Refer to the exhibit. R1 is configured for NAT as displayed. What is wrong with the configuration?

Selecione uma das seguintes:

NAT-POOL2 is not bound to ACL 1.
Interface Fa0/0 should be identified as an outside NAT interface.
The NAT pool is incorrect
Access-list 1 is misconfigured

Explicação

Questão 85 de 186

1

What is a disadvantage of NAT?

Selecione uma das seguintes:

There is no end-to-end addressing
The internal hosts have to use a single public IPv4 address for external communication
The router does not need to alter the checksum of the IPv4 packets.
The costs of readdressing hosts can be significant for a publicly addressed network.

Explicação

Questão 86 de 186

1

Which prefix is used for IPv6 ULAs?

Selecione uma das seguintes:

FC00::/7
2001:7F8::/29
FF02::1:FF00:0/104
2001:DB8:1:2::/64

Explicação

Questão 87 de 186

1

How does NAT complicate the use of IPsec?

Selecione uma das seguintes:

Header values are modified which causes issues with integrity checks.
End-to-end IPv4 traceability is lost.
Troubleshooting is made impossible
Network performance is degraded even more than with just NAT.

Explicação

Questão 88 de 186

1

A network administrator configures the border router with the command
R1(config)# ip nat inside source list 4 pool corp
What is required to be configured in order for this particular command to be functional?

Selecione uma das seguintes:

a NAT pool named corp that defines the starting and ending public IP addresses
ip nat outside to be enabled on the interface that connects to the LAN affected by the NAT
an access list numbered 4 that defines the starting and ending public IP addresses
an access list named corp that defines the private addresses that are affected by NAT
a VLAN named corp to be enabled and active and routed by R1

Explicação

Questão 89 de 186

1

What is the group of public IPv4 addresses used on a NAT-enabled router known as?

Selecione uma das seguintes:

inside global addresses
outside local addresses
outside global addresses
inside local addresses

Explicação

Questão 90 de 186

1

Refer to the exhibit. The NAT configuration applied to the router is as follows:
ERtr(config)# access-list 1 permit 10.0.0.0 0.255.255.255
ERtr(config)# ip nat pool corp 209.165.201.6 209.165.201.30 netmask 255.255.255.224
ERtr(config)# ip nat inside source list 1 pool corp overload
ERtr(config)# ip nat inside source static 10.10.10.55 209.165.201.4
ERtr(config)# interface gigabitethernet 0/0
ERtr(config-if)# ip nat inside
ERtr(config-if)# interface serial 0/0/0
ERtr(config-if)# ip nat outside
Based on the configuration and the output shown, what can be determined about the NAT status within the organization?

Selecione uma das seguintes:

Not enough information is given to determine if both static and dynamic NAT are working.
NAT is working
Static NAT is working, but dynamic NAT is not.
Dynamic NAT is working, but static NAT is not.

Explicação

Questão 91 de 186

1

Which configuration would be appropriate for a small business that has the public IP address of 209.165.200.225/30 assigned to the external interface on the router that connects to the Internet?

Selecione uma das seguintes:

access-list 1 permit 10.0.0.0 0.255.255.255
ip nat inside source list 1 interface serial 0/0/0 overload
access-list 1 permit 10.0.0.0 0.255.255.255
ip nat pool comp 192.168.2.1 192.168.2.8 netmask 255.255.255.240
ip nat inside source list 1 pool comp overload
ip nat inside source static 10.0.0.5 209.165.200.225
access-list 1 permit 10.0.0.0 0.255.255.255
ip nat pool comp 192.168.2.1 192.168.2.8 netmask 255.255.255.240
ip nat inside source list 1 pool comp
access-list 1 permit 10.0.0.0 0.255.255.255
ip nat pool comp 192.168.2.1 192.168.2.8 netmask 255.255.255.240
ip nat inside source list 1 pool comp overload

Explicação

Questão 92 de 186

1

When NAT is employed in a small office, which address type is typically used for hosts on the local LAN?

Selecione uma das seguintes:

private IP addresses
Internet-routable addresses
both private and public IP addresses
global public IP addresses

Explicação

Questão 93 de 186

1

When dynamic NAT without overloading is being used, what happens if seven users attempt to access a public server on the Internet when only six addresses are available in the NAT pool?

Selecione uma das seguintes:

The request to the server for the seventh user fails
All users can access the server
No users can access the server.
The first user gets disconnected when the seventh user makes the request

Explicação

Questão 94 de 186

1

Which technology would be used on a router that is running both IPv4 and IPv6?

Selecione uma das seguintes:

dual stack
NAT for IPv6
dynamic NAT
static NAT

Explicação

Questão 95 de 186

1

What is a characteristic of unique local addresses?

Selecione uma das seguintes:

They allow sites to be combined without creating any address conflicts
They are defined in RFC 3927.
Their implementation depends on ISPs providing the service.
They are designed to improve the security of IPv6 networks

Explicação

Questão 96 de 186

1

What are two of the required steps to configure PAT? (Choose two.)

Selecione uma ou mais das seguintes:

Identify the inside interface
Define a pool of global addresses to be used for overload translation
Create a standard access list to define applications that should be translated
Define the hello and interval timers to match the adjacent neighbor router
Define the range of source ports to be used

Explicação

Questão 97 de 186

1

Which type of NAT maps a single inside local address to a single inside global address?

Selecione uma das seguintes:

static
dynamic
overloading
port address translation

Explicação

Questão 98 de 186

1

Typically, which network device would be used to perform NAT for a corporate environment?

Selecione uma das seguintes:

router
switch
server
host device
DHCP server

Explicação

Questão 99 de 186

1

Which DSL technology provides higher downstream bandwidth to the user than upstream bandwidth?

Selecione uma das seguintes:

ADSL
TDMA
SDSL
CDMA

Explicação

Questão 100 de 186

1

What two layers of the OSI model are defined by DOCSIS? (Choose two.)

Selecione uma ou mais das seguintes:

Layer 1
Layer 2
Layer 3
Layer 4
Layer 5
Layer 6
Layer 7

Explicação

Questão 101 de 186

1

What are two features of wavelengths in the electromagnetic spectrum? (Choose two.)

Selecione uma ou mais das seguintes:

They are the distance from the peak of one radio wave to the peak of the next radio wave
They are calculated by the speed of propagation of the electromagnetic signal divided by its frequency in cycles per second
They are the distance from the peak of one radio wave to the trough of the next radio wave
They are the rate at which current or voltage cycles occur
They are calculated by the number of waves per second

Explicação

Questão 102 de 186

1

Which two network components does a teleworker require to connect remotely and securely from home to the corporate network? (Choose two.)

Selecione uma ou mais das seguintes:

VPN client software or VPN-enabled router
broadband Internet connection
VPN server or concentrator
authentication server
multifunction security appliance

Explicação

Questão 103 de 186

1

What are two Layer 2 WAN technologies that can provide secure remote connections between corporate branch offices? (Choose two.)

Selecione uma ou mais das seguintes:

Frame Relay
leased lines
QoS
LTE
IPsec

Explicação

Questão 104 de 186

1

What are two characteristics of a PPPoE configuration on a Cisco customer router? (Choose two.)

Selecione uma ou mais das seguintes:

The Ethernet interface does not have an IP address
The PPP configuration is on the dialer interface
The customer router CHAP username and password are independent of what is configured on the ISP router
The dialer pool command is applied to the Ethernet interface to link it to the dialer interface
An MTU size of 1492 bytes is configured on the Ethernet interface

Explicação

Questão 105 de 186

1

Which cable network communication technology is secure, extremely resistant to noise, and employs spread-spectrum technology?

Selecione uma das seguintes:

S-CDMA
TDMA
FDMA
CDMA

Explicação

Questão 106 de 186

1

Which standard specifies the channel frequencies and the deterministic access method of cable networks?

Selecione uma das seguintes:

DOCSIS
802.16
WiMAX
LTE

Explicação

Questão 107 de 186

1

Which technology provides a secure connection between a SOHO and the headquarters office?

Selecione uma das seguintes:

VPN
PPPoE
WiMax
QoS

Explicação

Questão 108 de 186

1

What mobile broadband communication Layer 2 technology uses a special coding scheme to assign each transmitter a specific code?

Selecione uma das seguintes:

CDMA
FDMA
UMTS
TDMA

Explicação

Questão 109 de 186

1

Which type of long distance telecommunication technology provides point-to-point connections and cellular access?

Selecione uma das seguintes:

WiMax
satellite
municipal Wi-Fi
mobile broadband

Explicação

Questão 110 de 186

1

Which medium is used for delivering data via DSL technology through PSTN?

Selecione uma das seguintes:

fiber
copper
wireless
radio frequency

Explicação

Questão 111 de 186

1

What technology provides service providers the capability to use authentication, accounting, and link management features to customers over Ethernet networks?

Selecione uma das seguintes:

PPPoE
ISDN
DSL
QoS

Explicação

Questão 112 de 186

1

Which broadband wireless technology is based on the 802.11 standard?

Selecione uma das seguintes:

municipal Wi-Fi
UMTS
CDMA
WiMAX

Explicação

Questão 113 de 186

1

Which broadband technology would be best for a user that needs remote access when traveling in mountains and at sea?

Selecione uma das seguintes:

satellite
Wi-Fi Mesh
mobile broadband
WiMax

Explicação

Questão 114 de 186

1

What are two disadvantages of employing teleworkers in an organization? (Choose two.)

Selecione uma ou mais das seguintes:

the need to implement a new management style
increased difficulty of tracking task progress
slower customer service response times
increase in office expenses
increased usage of sick or vacation days

Explicação

Questão 115 de 186

1

A company is looking for the least expensive broadband solution that provides at least 10 Mb/s download speed. The company is located 5 miles from the nearest provider. Which broadband solution would be appropriate?

Selecione uma das seguintes:

cable
DSL
satellite
WiMax

Explicação

Questão 116 de 186

1

What functionality is required on routers to provide remote workers with VoIP and videoconferencing capabilities?

Selecione uma das seguintes:

QoS
VPN
PPPoE
IPsec

Explicação

Questão 117 de 186

1

How is voice traffic affected when the customer uses ADSL technology?

Selecione uma das seguintes:

ADSL signals can distort voice transmissions
No special equipment is needed to separate voice and data signals
Voice signals are on a separate wire pair from ADSL signals
Voice traffic is interrupted if the ADSL service fails

Explicação

Questão 118 de 186

1

What advantage does DSL have compared to cable technology?

Selecione uma das seguintes:

DSL is not a shared medium
DSL has no distance limitations
DSL is faster
DSL upload and download speeds are always the same

Explicação

Questão 119 de 186

1

Which two OSI Layer 1 specifications does DOCSIS define for a cable Internet connection? (Choose two.)

Selecione uma ou mais das seguintes:

modulation technique
channel bandwidth
the separation of the voice and data transmissions
VPN tunneling requirements
a deterministic media access method

Explicação

Questão 120 de 186

1

Why is the MTU for a PPPoE DSL configuration reduced from 1500 bytes to 1492?

Selecione uma das seguintes:

to accommodate the PPPoE headers
to establish a secure tunnel with less overhead
to reduce congestion on the DSL link
to enable CHAP authentication

Explicação

Questão 121 de 186

1

When PPPoE is configured on a customer router, which two commands must have the same value for the configuration to work? (Choose two.)

Selecione uma ou mais das seguintes:

interface dialer 2
ppp chap password 2
ppp chap hostname 2
interface gigabitethernet 0/2
dialer pool 2
pppoe-client dial-pool-number 2

Explicação

Questão 122 de 186

1

Two corporations have just completed a merger. The network engineer has been asked to connect the two corporate networks without the expense of leased lines. Which solution would be the most cost effective method of providing a proper and secure connection between the two corporate networks?

Selecione uma das seguintes:

site-to-site VPN
Cisco Secure Mobility Clientless SSL VPN
Cisco AnyConnect Secure Mobility Client with SSL
Frame Relay
remote access VPN using IPsec

Explicação

Questão 123 de 186

1

How can the use of VPNs in the workplace contribute to lower operating costs?

Selecione uma das seguintes:

VPNs can be used across broadband connections rather than dedicated WAN links.
High-speed broadband technology can be replaced with leased lines
VPNs require a subscription from a specific Internet service provider that specializes in secure connections.
VPNs prevents connectivity to SOHO users

Explicação

Questão 124 de 186

1

A network design engineer is planning the implementation of an IPsec VPN. Which hashing algorithm would provide the strongest level of message integrity?

Selecione uma das seguintes:

512-bit SHA
SHA-1
AES
MD5

Explicação

Questão 125 de 186

1

Refer to the exhibit. A tunnel was implemented between routers R1 and R2. Which two conclusions can be drawn from the R1 command output? (Choose two.)

Selecione uma ou mais das seguintes:

A GRE tunnel is being used.
The data that is sent across this tunnel is not secure.
This tunnel mode provides encryption
This tunnel mode does not support IP multicast tunneling.
This tunnel mode is not the default tunnel interface mode for Cisco IOS software.

Explicação

Questão 126 de 186

1

Which two characteristics describe IPsec VPNs? (Choose two.)

Selecione uma ou mais das seguintes:

Specific PC client configuration is required to connect to the VPN.
IPsec authenticates by using shared secrets or digital certificates.
IPsec authentication is one-way or two-way
IPsec is specifically designed for web-enabled applications
Key lengths range from 40 bits to 256 bits

Explicação

Questão 127 de 186

1

How is "tunneling" accomplished in a VPN?

Selecione uma das seguintes:

New headers from one or more VPN protocols encapsulate the original packets.
Packets are disguised to look like other types of traffic so that they will be ignored by potential attackers
All packets between two hosts are assigned to a single physical medium to ensure that the packets are kept private.
A dedicated circuit is established between the source and destination devices for the duration of the connection.

Explicação

Questão 128 de 186

1

Which service of IPsec verifies that secure connections are formed with the intended sources of data?

Selecione uma das seguintes:

authentication
confidentiality
data integrity
encryption

Explicação

Questão 129 de 186

1

Which two scenarios are examples of remote access VPNs? (Choose two.)

Selecione uma ou mais das seguintes:

A mobile sales agent is connecting to the company network via the Internet connection at a hotel.
An employee who is working from home uses VPN client software on a laptop in order to connect to the company network.
A toy manufacturer has a permanent VPN connection to one of its parts suppliers.
All users at a large branch office can access company resources through a single VPN connection
A small branch office with three employees has a Cisco ASA that is used to create a VPN connection to the HQ

Explicação

Questão 130 de 186

1

What is an advantage of using the Cisco Secure Mobility Clientless SSL VPN?

Selecione uma das seguintes:

Clients do not require special software.
Any device can connect to the network without authentication
Security is provided by prohibiting network access through a browser
Clients use SSH to access network resources

Explicação

Questão 131 de 186

1

Which critical function that is provided by IPsec ensures that data has not been changed in transit between the source and destination?

Selecione uma das seguintes:

integrity
confidentiality
authentication
anti-replay protection

Explicação

Questão 132 de 186

1

Which statement describes a feature of site-to-site VPNs?

Selecione uma das seguintes:

Internal hosts send normal, unencapsulated packets.
The VPN connection is not statically defined.
VPN client software is installed on each host
Individual hosts can enable and disable the VPN connection

Explicação

Questão 133 de 186

1

What is an IPsec protocol that provides data confidentiality and authentication for IP packets?

Selecione uma das seguintes:

ESP
RSA
IKE
AH

Explicação

Questão 134 de 186

1

What is the purpose of utilizing Diffie-Hellman (DH) algorithms as part of the IPsec standard?

Selecione uma das seguintes:

DH algorithms allow two parties to establish a shared secret key that is used by encryption and hash algorithms.
DH algorithms allow two parties to establish a shared public key that is used by encryption and hash algorithms.
DH algorithms allow unlimited parties to establish a shared secret key that is used by encryption and hash algorithms.
DH algorithms allow unlimited parties to establish a shared public key that is used by encryption and hash algorithms.

Explicação

Questão 135 de 186

1

Which statement correctly describes IPsec?

Selecione uma das seguintes:

IPsec works at Layer 3, but can protect traffic from Layer 4 through Layer 7.
IPsec uses algorithms that were developed specifically for that protocol
IPsec implements its own method of authentication
IPsec is a Cisco proprietary standard

Explicação

Questão 136 de 186

1

Which two algorithms use Hash-based Message Authentication Code for message authentication? (Choose two.)

Selecione uma ou mais das seguintes:

SHA
MD5
DES
3DES
AES

Explicação

Questão 137 de 186

1

What key question would help determine whether an organization should use an SSL VPN or an IPsec VPN for the remote access solution of the organization?

Selecione uma das seguintes:

Do users need to be able to connect without requiring special VPN software?
What applications or network resources do the users need for access?
Are both encryption and authentication required?
Is a Cisco router used at the destination of the remote access tunnel?

Explicação

Questão 138 de 186

1

What is the purpose of a message hash in a VPN connection?

Selecione uma das seguintes:

It ensures that the data has not changed while in transit.
It ensures that the data is coming from the correct source.
It ensures that the data cannot be read in plain text.
It ensures that the data cannot be duplicated and replayed to the destination.

Explicação

Questão 139 de 186

1

Which remote access implementation scenario will support the use of generic routing encapsulation tunneling?

Selecione uma das seguintes:

a central site that connects to a SOHO site without encryption
a mobile user who connects to a router at a central site
a mobile user who connects to a SOHO site
a branch office that connects securely to a central site

Explicação

Questão 140 de 186

1

A network design engineer is planning the implementation of a cost-effective method to interconnect multiple networks securely over the Internet. Which type of technology is required?

Selecione uma das seguintes:

a VPN gateway
a GRE IP tunnel
a leased line
a dedicated ISP

Explicação

Questão 141 de 186

1

Refer to the exhibit. Which IP address would be configured on the tunnel interface of the destination router?

Selecione uma das seguintes:

172.16.1.2
209.165.200.225
172.16.1.1
209.165.200.226

Explicação

Questão 142 de 186

1

Which algorithm is an asymmetrical key cryptosystem?

Selecione uma das seguintes:

RSA
AES
DES
3DES

Explicação

Questão 143 de 186

1

Refer to the exhibit. From what location have the syslog messages been retrieved?

Selecione uma das seguintes:

router RAM
router NVRAM
syslog client
syslog server

Explicação

Questão 144 de 186

1

Which syslog message type is accessible only to an administrator and only via the Cisco CLI?

Selecione uma das seguintes:

debugging
alerts
errors
emergency

Explicação

Questão 145 de 186

1

The command ntp server 10.1.1.1 is issued on a router. What impact does this command have?

Selecione uma das seguintes:

synchronizes the clock of the device to the timeserver that is located at IP address 10.1.1.1
determines which server to send system log files to
ensures that all logging will have a time stamp associated with it
identifies the server on which to store backup configurations

Explicação

Questão 146 de 186

1

A network administrator has issued the logging trap 4 global configuration mode command. What is the result of this command?

Selecione uma das seguintes:

The syslog client will send to the syslog server any event message that has a severity level of 4 and lower.
After four events, the syslog client will send an event message to the syslog server.
The syslog client will send to the syslog server event messages with an identification trap level of only 4.
The syslog client will send to the syslog server any event message that has a severity level of 4 and higher.

Explicação

Questão 147 de 186

1

Which protocol is used by network administrators to track and gather statistics on TCP/IP packets that are entering or exiting network devices?

Selecione uma das seguintes:

NetFlow
NTP
syslog
SNMP

Explicação

Questão 148 de 186

1

Which SNMP version uses weak community string-based access control and supports bulk retrieval?

Selecione uma das seguintes:

SNMPv2c
SNMPv3
SNMPv1
SNMPv2Classic

Explicação

Questão 149 de 186

1

A network administrator issues two commands on a router:
R1(config)# snmp-server host 10.10.50.25 version 2c campus
R1(config)# snmp-server enable traps
What can be concluded after the commands are entered?

Selecione uma das seguintes:

If an interface comes up, a trap is sent to the server
No traps are sent, because the notification-types argument was not specified yet.
The snmp-server enable traps command needs to be used repeatedly if a particular subset of trap types is desired
Traps are sent with the source IP address as 10.10.50.25.

Explicação

Questão 150 de 186

1

Refer to the exhibit. While planning an upgrade, a network administrator uses the Cisco NetFlow utility to analyze data flow in the current network. Which protocol used the greatest amount of network time?

Selecione uma das seguintes:

UDP-other
TCP-Telnet
TCP-FTP
UDP-DNS
TCP-other

Explicação

Questão 151 de 186

1

When SNMPv1 or SNMPv2 is being used, which feature provides secure access to MIB objects?

Selecione uma das seguintes:

community strings
message integrity
packet encryption
source validation

Explicação

Questão 152 de 186

1

Which type of information can an administrator obtain with the show ip cache flow command?

Selecione uma das seguintes:

the protocol that uses the largest volume of traffic
the configuration of the export parameters
the NetFlow version that is enabled
whether NetFlow is configured on the correct interface and in the correct direction

Explicação

Questão 153 de 186

1

A network administrator has issued the snmp-server user admin1 admin v3 encrypted auth md5 abc789 priv des 256 key99 command. What are two features of this command? (Choose two.)

Selecione uma ou mais das seguintes:

It uses the MD5 authentication of the SNMP messages.
It adds a new user to the SNMP group.
It forces the network manager to log into the agent to retrieve the SNMP messages.
It allows a network administrator to configure a secret encrypted password on the SNMP server.
It restricts SNMP access to defined SNMP managers.

Explicação

Questão 154 de 186

1

Which two statements describe items to be considered in configuring NetFlow? (Choose two.)

Selecione uma ou mais das seguintes:

Netflow can only be used in a unidirectional flow
NetFlow consumes additional memory
Netflow requires both management and agent software.
NetFlow can only be used if all devices on the network support it
Netflow requires UDP port 514 for notification messages

Explicação

Questão 155 de 186

1

What are the most common syslog messages?

Selecione uma das seguintes:

link up and link down messages
output messages that are generated from debug output
those that occur when a packet matches a parameter condition in an access control list
error messages about hardware or software malfunctions

Explicação

Questão 156 de 186

1

Which destination do Cisco routers and switches use by default when sending syslog messages for all severity levels?

Selecione uma das seguintes:

console
nearest syslog server
NVRAM
RAM

Explicação

Questão 157 de 186

1

Refer to the exhibit. What does the number 17:46:26.143 represent?

Selecione uma das seguintes:

the time when the syslog message was issued
the time passed since the syslog server has been started
the time on the router when the show logging command was issued
the time passed since the interfaces have been up

Explicação

Questão 158 de 186

1

Refer to the exhibit. What can be concluded from the produced output?

Selecione uma das seguintes:

An ACL was configured to restrict SNMP access to an SNMP manager.
This is the output of the show snmp command without any parameters.
The location of the device was not configured with the snmp-server location command.
The system contact was not configured with the snmp-server contact command.

Explicação

Questão 159 de 186

1

Which protocol or service can be configured to send unsolicited messages to alert the network administrator about a network event such as an extremely high CPU utilization on a router?

Selecione uma das seguintes:

SNMP
NTP
syslog
NetFlow

Explicação

Questão 160 de 186

1

When logging is used, which severity level indicates that a device is unusable?

Selecione uma das seguintes:

Emergency - Level 0
Critical - Level 2
Alert - Level 1
Error - Level 3

Explicação

Questão 161 de 186

1

Which protocol or service allows network administrators to receive system messages that are provided by network devices?

Selecione uma das seguintes:

syslog
NetFlow
NTP
SNMP

Explicação

Questão 162 de 186

1

What is the most common purpose of implementing NetFlow in a networked environment?

Selecione uma das seguintes:

to support accounting and monitoring with consumer applications
to passively capture changing events that occur in the network and to perform after-the-fact-analysis
to actively capture traffic from networked devices
to monitor live data usage and to control traffic flow with set messages

Explicação

Questão 163 de 186

1

Which statement describes SNMP operation?

Selecione uma das seguintes:

A set request is used by the NMS to change configuration variables in the agent device.
An SNMP agent that resides on a managed device collects information about the device and stores that information remotely in the MIB that is located on the NMS
An NMS periodically polls the SNMP agents that are residing on managed devices by using traps to query the devices for data
A get request is used by the SNMP agent to query the device for data

Explicação

Questão 164 de 186

1

How does NetFlow function on a Cisco router or multilayer switch?

Selecione uma das seguintes:

One user connection to an application exists as two NetFlow flows.
Netflow captures and analyzes traffic
NetFlow does not consume any additional memory.
On 2960 switches, Netlow allows for data export

Explicação

Questão 165 de 186

1

Which SNMP feature provides a solution to the main disadvantage of SNMP polling?

Selecione uma das seguintes:

SNMP trap messages
SNMP community strings
SNMP set messages
SNMP get messages

Explicação

Questão 166 de 186

1

A user in a large office calls technical support to complain that a PC has suddenly lost connectivity to the network. The technician asks the caller to talk to nearby users to see if other machines are affected. The caller reports that several immediate neighbors in the same department have a similar problem and that they cannot ping each other. Those who are seated in other departments have connectivity. What should the technician check as the first step in troubleshooting the issue?

Selecione uma das seguintes:

the status of the departmental workgroup switch in the wiring closet
the cable connection between a PC and a network outlet that is used by a neighbor
the cable that connects the PC of the caller to the network jack
the trunks between switches in the wiring closet
the power outlet to the PC that is used by the caller

Explicação

Questão 167 de 186

1

When should a network performance baseline be measured?

Selecione uma das seguintes:

during normal work hours of an organization
immediately after the main network devices restarted
after normal work hours to reduce possible interruptions
when a denial of service attack to the network is detected and blocked

Explicação

Questão 168 de 186

1

What is a purpose of establishing a network baseline?

Selecione uma das seguintes:

It creates a point of reference for future network evaluations.
It manages the performance of network devices
It provides a statistical average for network performance
It checks the security configuration of network devices

Explicação

Questão 169 de 186

1

A network technician is troubleshooting an email connection problem. Which question to the end-user will provide clear information to better define the problem?

Selecione uma das seguintes:

When did you first notice your email problem?
What kind of equipment are you using to send emails?
How big are the emails you tried to send?
Is your email working now?

Explicação

Questão 170 de 186

1

In which step of gathering symptoms does the network engineer determine if the problem is at the core, distribution, or access layer of the network?

Selecione uma das seguintes:

Narrow the scope
Determine the symptoms
Document the symptoms
Gather information
Determine ownership

Explicação

Questão 171 de 186

1

Which number represents the most severe level of syslog logging?

Selecione uma das seguintes:

0
10
1
7
100

Explicação

Questão 172 de 186

1

A team of engineers has identified a solution to a significant network problem. The proposed solution is likely to affect critical network infrastructure components. What should the team follow while implementing the solution to avoid interfering with other processes and infrastructure?

Selecione uma das seguintes:

change-control procedures
knowledge base guidelines
one of the layered troubleshooting approaches
syslog messages and reports

Explicação

Questão 173 de 186

1

After which step in the network troubleshooting process would one of the layered troubleshooting methods be used?

Selecione uma das seguintes:

gathering symptoms from suspect devices
documenting symptoms
determining ownership
narrowing the scope

Explicação

Questão 174 de 186

1

Which type of tool would an administrator use to capture packets that are going to and from a particular device?

Selecione uma das seguintes:

protocol analyzer
baselining tool
NMS tool
knowledge base

Explicação

Questão 175 de 186

1

Which troubleshooting method begins by examining cable connections and wiring issues?

Selecione uma das seguintes:

bottom-up
top-down
divide-and-conquer
substitution

Explicação

Questão 176 de 186

1

An administrator is troubleshooting an Internet connectivity problem on a router. The output of the show interfaces gigabitethernet 0/0 command reveals higher than normal framing errors on the interface that connects to the Internet. At what layer of the OSI model is the problem likely occurring?

Selecione uma das seguintes:

Layer 2
Layer 1
Layer 3
Layer 4
Layer 7

Explicação

Questão 177 de 186

1

A company is setting up a web site with SSL technology to protect the authentication credentials required to access the web site. A network engineer needs to verify that the setup is correct and that the authentication is indeed encrypted. Which tool should be used?

Selecione uma das seguintes:

protocol analyzer
baselining tool
fault-management tool
cable analyzer

Explicação

Questão 178 de 186

1

Which statement describes the physical topology for a LAN?

Selecione uma das seguintes:

It defines how hosts and network devices connect to the LAN.
It shows the order in which hosts access the network
It describes whether the LAN is a broadcast or token-passing network.
It depicts the addressing scheme that is employed in the LAN.

Explicação

Questão 179 de 186

1

A network engineer is troubleshooting a network problem and can successfully ping between two devices. However, Telnet between the same two devices does not work. Which OSI layers should the administrator investigate next?

Selecione uma das seguintes:

from the network layer to the application layer
from the network layer to the physical layer
only the network layer
all of the layers

Explicação

Questão 180 de 186

1

The newly configured ASBR that connects a company to the Internet has a default route configured and has the default-information originate command entered. Devices connected through this router can access the Internet. The problem is that no other OSPF routers have a default route in the routing table and no other users throughout the organization can access the Internet. What could be the problem?

Selecione uma das seguintes:

The ASBR does not have an OSPF neighbor.
The ASBR does not have OSPF configured
The other routers are not configured to accept LSA type 4s.
The ASBR should use the exit_interface argument instead of next-hop on the default route.

Explicação

Questão 181 de 186

1

Users report that the new web site http://www.company1.biz cannot be accessed. The helpdesk technician checks and verifies that the web site can be accessed with http://www.company1.biz:90. Which layer in the TCP/IP model is involved in troubleshooting this issue?

Selecione uma das seguintes:

transport
application
internet
network access

Explicação

Questão 182 de 186

1

A user reports that after an OS patch of the networking subsystem has been applied to a workstation, it performs very slowly when connecting to network resources. A network technician tests the link with a cable analyzer and notices that the workstation sends an excessive number of frames smaller than 64 bytes and also other meaningless frames. What is the possible cause of the problem?

Selecione uma das seguintes:

corrupted NIC driver
corrupted application installation
cabling faults
Ethernet signal attenuation

Explicação

Questão 183 de 186

1

Which two specialized troubleshooting tools can monitor the amount of traffic that passes through a switch? (Choose two.)

Selecione uma ou mais das seguintes:

NAM
portable network analyzer
digital multimeter
DTX cable analyzer
TDR

Explicação

Questão 184 de 186

1

A group of Windows PCs in a new subnet has been added to an Ethernet network. When testing the connectivity, a technician finds that these PCs can access local network resources but not the Internet resources. To troubleshoot the problem, the technician wants to initially confirm the IP address and DNS configurations on the PCs, and also verify connectivity to the local router. Which three Windows CLI commands and utilities will provide the necessary information? (Choose three.)

Selecione uma ou mais das seguintes:

ping
nslookup
ipconfig
tracert
netsh interface ipv6 show neighbor
arp -a
telnet

Explicação

Questão 185 de 186

1

A networked PC is having trouble accessing the Internet, but can print to a local printer and ping other computers in the area. Other computers on the same network are not having any issues. What is the problem?

Selecione uma das seguintes:

The PC has a missing or incorrect default gateway
The link between the switch to which the PC connects and the default gateway router is down
The default gateway router does not have a default route
The switch port to which the PC connects has an incorrect VLAN configured

Explicação

Questão 186 de 186

1

An internal corporate server can be accessed by internal PCs, but not by external Internet users that should have access. What could be the issue?

Selecione uma das seguintes:

Static NAT has not been configured properly or at all.
The default gateway router for the server does not have a default route
The server does not have a private IP address assigned
The switch port to which the server connects has an incorrect VLAN configured

	Criado por Anthony Schulmeister mais de 8 anos atrás

WAN Technologies CH 1-9 Final Exam

WAN Technologies Final Exam CH 1-9

Questão 1 de 186

Refer to the exhibit. Which type of ISP connectivity to the service provider edge is being used by company A?

Selecione uma das seguintes:

Explicação

Questão 2 de 186

Refer to the exhibit. Which Cisco Enterprise Architecture module is shown?

Selecione uma das seguintes:

Explicação

Questão 3 de 186

The network design for a college with users at five sites is being developed. Where in the campus network architecture would servers used by all users be located?

Selecione uma das seguintes:

Explicação

Questão 4 de 186

Which network architecture functions through a combination of technologies that include wired, wireless, security, and more?

Selecione uma das seguintes:

Explicação

Questão 5 de 186

Which network module is the fundamental component of a campus design?

Selecione uma das seguintes:

Explicação

Questão 6 de 186

What is one advantage to designing networks in building block fashion for large companies?

Selecione uma das seguintes:

Explicação

Questão 7 de 186

A network engineer wants to redesign the wireless network and make use of wireless network controllers that manage the many deployed wireless access points. In which network design module of the campus network architecture would the centralized wireless network controllers be found?

Selecione uma das seguintes:

Explicação

Questão 8 de 186

Refer to the exhibit. Which type of Cisco hierarchical LAN design model is used at school site 1?

Selecione uma das seguintes:

Explicação

Questão 9 de 186

Which layer of the Cisco Collaboration Architecture contains unified communications and conference software such as Cisco WebEx Meetings, WebEx Social, Cisco Jabber, and TelePresence?

Selecione uma das seguintes:

Explicação

Questão 10 de 186

Why would a company want network engineers to adhere to structured engineering principles when designing networks?

Selecione uma das seguintes:

Explicação

Questão 11 de 186

What is creating a new challenge for IT departments by changing the border of the enterprise network?

Selecione uma das seguintes:

Explicação

Questão 12 de 186

Which approach in networking allows for network changes, upgrades, or the introduction of new services in a controlled and staged fashion?

Selecione uma das seguintes:

Explicação

Questão 13 de 186

Which Cisco technology allows diverse network devices to connect securely, reliably, and seamlessly to enterprise network resources?

Selecione uma das seguintes:

Explicação

Questão 14 de 186

In which layer of the hierarchical enterprise LAN design model would PoE for VoIP phones and access points be considered?

Selecione uma das seguintes:

Explicação

Questão 15 de 186

Which network architecture combines individual components to provide a comprehensive solution allowing people to cooperate and contribute to the production of something?

Selecione uma das seguintes:

Explicação

Questão 16 de 186

What feature is more important at the core layer than at any other hierarchical network design layer?

Selecione uma das seguintes:

Explicação

Questão 17 de 186

What are two of the top trends that affect network architecture design? (Choose two.)

Selecione uma ou mais das seguintes:

Explicação

Questão 18 de 186

Which three network architectures have been introduced by Cisco to address the emerging technology challenges created by the evolving business models? (Choose three.)

Selecione uma ou mais das seguintes:

Explicação

Questão 19 de 186

What are two structured engineering principles necessary for successful implementation of a network design? (Choose two.)

Selecione uma ou mais das seguintes:

Explicação

Questão 20 de 186

What is the recommended technology to use over a public WAN infrastructure when a branch office is connected to the corporate site?