CCNA 1 Old Final exam

Questão 1 de 154

1

What is a function of the data link layer?

Selecione uma das seguintes:

provides the formatting of data
provides for the exchange of data over a common local media
provides end-to-end delivery of data between hosts
provides delivery of data between two applications

Explicação

Questão 2 de 154

1

Which communication tool allows real-time collaboration?

Selecione uma das seguintes:

wiki
e-mail
weblog
instant messaging

Explicação

Questão 3 de 154

1

A host is accessing a Web server on a remote network. Which three functions are performed by intermediary network devices during this conversation? (Choose three.)

Selecione uma ou mais das seguintes:

regenerating data signals
acting as a client or a server
providing a channel over which messages travel
applying security settings to control the flow of data
notifying other devices when errors occur
serving as the source or destination of the messages

Explicação

Questão 4 de 154

1

Refer to the exhibit. From which location did this router load the IOS?

Selecione uma das seguintes:

flash memory
NVRAM?
RAM
ROM
A TFTP server

Explicação

Questão 5 de 154

1

Refer to the exhibit. Which action will be successful?

Selecione uma das seguintes:

PC1 can send a ping to 192.168.1.1
PC1 can send a ping to 192.168.1.254
PC2 can send a ping to 192.168.1.1
PC2 can send a ping to 192.168.1.254

Explicação

Questão 6 de 154

1

Fill in the blank.
Port numbers ranging from 0 to 1023 are considered to be _______ ports.

Selecione uma das seguintes:

WELL KNOWN
____

Explicação

Questão 7 de 154

1

Fill in the blank.
ISOC, IANA, EIA, and IEEE represent _______ organizations which help to promote and maintain an open Internet.

Selecione uma das seguintes:

standards
______

Explicação

Questão 8 de 154

1

Refer to the exhibit. An administrator is trying to configure the switch but receives the error message that is displayed in the exhibit. What is the problem?

Selecione uma das seguintes:

The entire command,
configure terminal, must be
used.
The administrator is already
in global configuration mode.
The administrator must first enter privileged EXEC mode before issuing the command.
The administrator must connect via the console port to access global configuration mode.

Explicação

Questão 9 de 154

1

A company is expanding its business to other countries. All branch offices must remain connected to corporate headquarters at all times. Which network technology is required to support this requirement?

Selecione uma das seguintes:

LAN
MAN
WAN
WLAN

Explicação

Questão 10 de 154

1

A network administrator is upgrading a small business network to give high priority to real-time applications traffic. What two types of network services is the network administrator trying to accommodate? (Choose two.)

Selecione uma ou mais das seguintes:

SNMP
instant messaging
voice
FTP
video

Explicação

Questão 11 de 154

1

Which IPv4 address can be pinged to test the internal TCP/IP operation of a host?

Selecione uma das seguintes:

0.0.0.0
0.0.0.1
127.0.0.1
192.168.1.1
255.255.255.255

Explicação

Questão 12 de 154

1

What three application layer protocols are part of the TCP/IP protocol suite?
(Choose three.)

Selecione uma ou mais das seguintes:

ARP
DHCP
DNS
FTP
NAT
PPP

Explicação

Questão 13 de 154

1

Which two protocols function at the internet layer? (Choose two)

Selecione uma ou mais das seguintes:

ARP
BOOTP
ICMP
IP
PPP

Explicação

Questão 14 de 154

1

Which publicly available resources describe protocols, processes, and technologies for the Internet but do not give implementation details?

Selecione uma das seguintes:

Request for Comments
IRTF research papers
protocol models
IEEE standards
IEEE standards

Explicação

Questão 15 de 154

1

Which address on a PC does not change, even if the PC is moved to a different network?

Selecione uma das seguintes:

IP address
default gateway address
MAC address
logical address

Explicação

Questão 16 de 154

1

What is the protocol that is used to discover a physical address from a known logical address and what message type does it use?

Selecione uma das seguintes:

ARP, multicast
DNS, unicast
DNS, broadcast
ARP, broadcast
PING, multicast
PING, broadcast

Explicação

Questão 17 de 154

1

What will happen if the default gateway address is incorrectly configured on a host?

Selecione uma das seguintes:

The host cannot communicate with other hosts in the local network.
The switch will not forward packets initiated by the host.
The host will have to use ARP to determine the correct address of the default gateway.
The host cannot communicate with hosts in other networks.
A ping from the host to 127.0.0.1 would not be successful.

Explicação

Questão 18 de 154

1

What is an important function of the physical layer of the OSI model?

Selecione uma das seguintes:

It accepts frames from the physical media.
It encapsulates upper layer data into frames.
It defines the media access method performed by the hardware interface.
It encodes frames into electrical, optical, or radio wave signals.

Explicação

Questão 19 de 154

1

Which two statements describe the characteristics of fiber-optic cabling? (Choose two.)

Selecione uma ou mais das seguintes:

Fiber-optic cabling does not conduct electricity.
Fiber-optic cabling has high signal loss.
Fiber-optic cabling is primarily used as backbone cabling.
Multimode fiber-optic cabling carries signals from multiple sending devices.
Fiber-optic cabling uses LEDs for single-mode cab?les and laser technology for multimode cables.

Explicação

Questão 20 de 154

1

What is contained in the trailer of a data-link frame?

Selecione uma das seguintes:

error detection
logical address
physical address
data

Explicação

Questão 21 de 154

1

Refer to the exhibit. A ping to PC3 is issued from PC0, PC1, and PC2 in this exact order. Which MAC addresses will be contained in the S1 MAC address table that is associated with the Fa0/1 port?

Selecione uma das seguintes:

just PC0 and PC1 MAC addresses
just the PC0 MAC address
PC0, PC1, and PC2 MAC addresses
just the PC1 MAC address
just the PC2 MAC address

Explicação

Questão 22 de 154

1

How does a Layer 3 switch differ from a Layer 2 switch?

Selecione uma das seguintes:

A Layer 3 switch supports VLANs, but a Layer 2 switch does not.
An IP address can be assigned to a physical port of a Layer 3 switch. However, this is not supported in Layer 2 switches.
A Layer 3 switch maintains an IP address table instead of a MAC address table.
A Layer 3 switch learns the MAC addresses that are associated with each of its ports. However, a Layer 2 switch does not.

Explicação

Questão 23 de 154

1

What is the purpose of the routing process?

Selecione uma das seguintes:

to encapsulate data that is used to communicate across a network
to select the paths that are used to direct traffic to destination networks
to convert a URL name into an IP address
to provide secure Internet file transfer
to forward traffic on the basis of MAC addresses

Explicação

Questão 24 de 154

1

Which technology provides a solution to IPv4 address depletion by allowing multiple devices to share one public IP address?

Selecione uma das seguintes:

ARP
DNS
NAT
SMB
DHCP
HTTP

Explicação

Questão 25 de 154

1

Refer to the exhibit. Consider the IP address configuration shown from PC1. What is a description of the default gateway address?

Selecione uma das seguintes:

It is the IP address of the Router1 interface that connects the company to the Internet.
It is the IP address of the Router1 interface that connects the PC1 LAN to Router1.
It is the IP address of Switch1 that connects PC1 to other devices on the same LAN.
It is the IP address of the ISP network device located in the cloud.

Explicação

Questão 26 de 154

1

Which of the following are primary functions of a router? (Choose two.)

Selecione uma ou mais das seguintes:

packet switching*
microsegmentation
domain name resolution
path selection
flow control

Explicação

Questão 27 de 154

1

Which two statements correctly describe a router memory type and its
contents? (Choose two.)

Selecione uma ou mais das seguintes:

ROM is nonvolatile and contains basic diagnostic software.
FLASH is nonvolatile and contains a limited portion of the IOS .
ROM is nonvolatile and stores the running IOS.
RAM is volatile and stores the IP routing table.
NVRAM is nonvolatile and stores other system files.

Explicação

Questão 28 de 154

1

In which default order will a router search for startup configuration information?

Selecione uma das seguintes:

NVRAM, RAM, TFTP
NVRAM, TFTP, setup mode
setup mode, NVRAM, TFTP
TFTP, ROM, NVRAM
flash, ROM, setup mode

Explicação

Questão 29 de 154

1

What happens when part of an Internet VoIP transmission is not delivered to the destination?

Selecione uma das seguintes:

A delivery failure message is sent to the source host.
The part of the VoIP transmission that was lost is re-sent.
The entire transmission is re-sent.
The transmission continues without the missing portion.

Explicação

Questão 30 de 154

1

Which three IP addresses are private ? (Choose three.)

Selecione uma ou mais das seguintes:

10.172.168.1
172.32.5.2
192.167.10.10
172.20.4.4
192.168.5.254
224.6.6.6

Explicação

Questão 31 de 154

1

How many bits make up the single IPv6 hextet :10CD:?

Selecione uma das seguintes:

4
8
16
32

Explicação

Questão 32 de 154

1

What is the effect of configuring the ipv6 unicast-routing command on a
router?

Selecione uma das seguintes:

to assign the router to the all-nodes multicast group
to enable the router as an IPv6 router
to permit only unicast packets on the router
to prevent the router from joining the all-routers multicast group

Explicação

Questão 33 de 154

1

Which group of IPv6 addresses cannot be allocated as a host source address?

Selecione uma das seguintes:

FEC0::/10?
FDFF::/7?
FEBF::/10?
FF00::/8*

Explicação

Questão 34 de 154

1

What is the purpose of ICMP messages?

Selecione uma das seguintes:

to inform routers about network topology changes
to ensure the delivery of an IP packet
to provide feedback of IP packet transmissions
to monitor the process of a domain name to IP address resolution

Explicação

Questão 35 de 154

1

Refer to the exhibit. A technician has configured a user workstation with the IP
address and default subnet masks that are shown. Although the user can access all local LAN resources, the user cannot access any Internet sites by using either FQDN or IP addresses. Based upon the exhibit, what could account for this failure?

Selecione uma das seguintes:

The DNS server addresses are incorrect.
The default gateway address in incorrect.
The wrong subnet mask was assigned to the workstation.
The workstation is not in the same network as the DNS servers.

Explicação

Questão 36 de 154

1

A network administrator needs to monitor network traffic to and from servers in a data center. Which features of an IP addressing scheme should be applied to these devices?

Selecione uma das seguintes:

random static addresses to improve security
addresses from different subnets for redundancy
predictable static IP addresses for easier identification
dynamic addresses to reduce the probability of duplicate addresses

Explicação

Questão 37 de 154

1

Refer to the exhibit. Which IP addressing scheme should be changed?

Selecione uma das seguintes:

Site 1
Site 2
Site 3
Site 4

Explicação

Questão 38 de 154

1

Which two notations are useable nibble boundaries when subnetting in IPv6?
(Choose two.)

Selecione uma ou mais das seguintes:

/62
/64
/66
/68
/70

Explicação

Questão 39 de 154

1

A host PC has just booted and is attempting to lease an address through
DHCP. Which two messages will the client typically broadcast on the network? (Choose two.)

Selecione uma ou mais das seguintes:

DHCPDISCOVER
DHCPOFFER
DHCPREQUEST
DHCPACK
DHCPNACK

Explicação

Questão 40 de 154

1

What is the purpose of the network security accounting function?

Selecione uma das seguintes:

to require users to prove who they are
to determine which resources a user can access
to keep track of the actions of a user
to provide challenge and response questions

Explicação

Questão 41 de 154

1

Refer to the exhibit. The network administrator enters these commands into the R1 router:
R1# copy running-config tftp
Address or name of remote host [ ]?
When the router prompts for an address or remote host name, what IP address should the administrator enter at the prompt?

Selecione uma das seguintes:

192.168.9.254
192.168.10.1
192.168.10.2
192.168.11.252
192.168.11.254

Explicação

Questão 42 de 154

1

What two preconfigured settings that affect security are found on most new wireless routers? (Choose two.)

Selecione uma ou mais das seguintes:

broadcast SSID
MAC filtering enabled
WEP encryption enabled
PSK authentication required
default administrator password

Explicação

Questão 43 de 154

1

Which type of wireless security generates dynamic encryption keys each time a
client associates with an AP?

Selecione uma das seguintes:

EAP
PSK
WEP
WPA

Explicação

Questão 44 de 154

1

Fill in the blank.
TFTP* is a best-effort, connectionless application layer protocol that is used to transfer files.

Selecione uma das seguintes:

--------
TFTP

Explicação

Questão 45 de 154

1

Which two components are necessary for a wireless client to be installed on a WLAN? (Choose two.)

Selecione uma ou mais das seguintes:

media
wireless NIC
custom adapter
crossover cable
wireless bridge
wireless client software

Explicação

Questão 46 de 154

1

Consider the following range of addresses2001:0DB8:BC15:00A0:0000:: 2001:0DB8:BC15:00A1:0000:: 2001:0DB8:BC15:00A2:0000::
...
2001:0DB8:BC15:00AF:0000::

Selecione uma das seguintes:

The prefix-length for the range of addresses is /60* .
----

Explicação

Questão 47 de 154

1

A host is accessing an FTP server on a remote network. Which three functions are performed by intermediary network devices during this conversation? (Choose three.)

Selecione uma ou mais das seguintes:

regenerating data signals
acting as a client or a server
providing a channel over which messages travel
applying security settings to control the flow of data
notifying other devices when errors occur
serving as the source or destination of the messages

Explicação

Questão 48 de 154

1

When is a dial-up connection used to connect to an ISP?

Selecione uma das seguintes:

when a cellular telephone provides the service
when a high-speed connection is provided over a cable TV network
when a satellite dish is used
when a regular telephone line is used

Explicação

Questão 49 de 154

1

On a school network, students are surfing the web, searching the library database, and attending an audio conference with their sister school in Japan. If network traffic is prioritized with QoS, how will the traffic be classified from highest priority to lowest priority?

Selecione uma das seguintes:

audio conference, database, HTTP
database, HTTP, audio conference
audio conference, HTTP, database
database, audio conference, HTTP

Explicação

Questão 50 de 154

1

During normal operation, from which location do most Cisco routers run the IOS?

Selecione uma das seguintes:

RAM
flash
NVRAM
disk drive

Explicação

Questão 51 de 154

1

Which keys act as a hot key combination that is used to interrupt an IOS process?

Selecione uma das seguintes:

Ctrl-Shift-X
Ctrl-Shift-6
Ctrl-Z
Ctrl-C

Explicação

Questão 52 de 154

1

Refer to the exhibit. An administrator wants to change the name of a brand new
switch, using the hostname command as shown. What prompt will display after the command is issued??

Selecione uma das seguintes:

HR Switch(config)#?
Switch(config)#?
HRSwitch(config)#?
HR(config)#?
Switch#

Explicação

Questão 53 de 154

1

A technician uses the ping 127.0.0.1 command. What is the technician testing?

Selecione uma das seguintes:

the TCP/IP stack on a network host
connectivity between two adjacent Cisco devices
connectivity between a PC and the default gateway
connectivity between two PCs on the same network
physical connectivity of a particular PC and the network

Explicação

Questão 54 de 154

1

Which device should be used for enabling a host to communicate with another host on a different network?

Selecione uma das seguintes:

switch
hub
router
host

Explicação

Questão 55 de 154

1

A network technician is measuring the transfer of bits across the company backbone for a mission critical application. The technician notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)

Selecione uma ou mais das seguintes:

the amount of traffic that is currently crossing the network
the type of traffic that is crossing the network
the latency that is created by the number of network devices that the data is crossing
the sophistication of the encapsulation method applied to the data
the bandwidth of the WAN connection to the Internet
the reliability of the gigabit Ethernet infrastructure of the backbone

Explicação

Questão 56 de 154

1

Which characteristics describe fiber optic cable? (Choose two.)

Selecione uma ou mais das seguintes:

It is not affected by EMI or RFI.
Each pair of cables is wrapped in metallic foil.
It combines the technique of cancellation, shielding and twisting to protect data.
It has a maximum speed of 100 Mbps.
It is the most expensive type of LAN cabling

Explicação

Questão 57 de 154

1

What are two features of a physical, star network topology? (Choose two.)

Selecione uma ou mais das seguintes:

It is straightforward to troubleshoot.
End devices are connected together by a bus.
All end devices are connected in a chain to each other.
It is easy to add and remove end devices.
Each end system is connected to its respective neighbor.

Explicação

Questão 58 de 154

1

A frame is transmitted from one networking device to another. Why does the receiving device check the FCS field in the frame?

Selecione uma das seguintes:

to determine the physical address of the sending device
to verify the network layer protocol information
to compare the interface media type between the sending and receiving ends
to check the frame for possible transmission errors
to verify that the frame destination matches the MAC address of the receiving device

Explicação

Questão 59 de 154

1

What will a Layer 2 switch do when the destination MAC address of a received frame is not in the MAC table?

Selecione uma das seguintes:

It initiates an ARP request.
It broadcasts the frame out of all ports on the switch.
It notifies the sending host that the frame cannot be delivered.
It forwards the frame out of all ports except for the port at which the frame was received.

Explicação

Questão 60 de 154

1

Which parameter does the router use to choose the path to the destination when there are multiple routes available?

Selecione uma das seguintes:

the lower metric value that is associated with the destination network
the lower gateway IP address to get to the destination network
the higher metric value that is associated with the destination network
the higher gateway IP address to get to the destination network

Explicação

Questão 61 de 154

1

Which two statements describe the functions or characteristics of ROM in a router? (Choose two.)

Selecione uma ou mais das seguintes:

stores routing tables
allows software to be updated without replacing pluggable chips on the motherboard
maintains instructions for POST diagnostics
holds ARP cache
stores bootstrap program

Explicação

Questão 62 de 154

1

Which statement describes a characteristic of the Cisco router management ports?

Selecione uma das seguintes:

A console port is used for remote management of the router.
A console port is not used for packet forwarding.
Serial and DSL interfaces are types of management ports.
Each Cisco router has a LED indicator to provide information about the status of the management ports.

Explicação

Questão 63 de 154

1

What happens when part of an Internet radio transmission is not delivered to the destination?

Selecione uma das seguintes:

A delivery failure message is sent to the source host.
The part of the radio transmission that was lost is re-sent.
The entire transmission is re-sent.
The transmission continues without the missing portion.

Explicação

Questão 64 de 154

1

What types of addresses make up the majority of addresses within the /8 block IPv4 bit space?

Selecione uma das seguintes:

private addresses
public addresses
multicast addresses
experimental addresses

Explicação

Questão 65 de 154

1

Refer to the exhibit. What is the maximum TTL value that is used to reach the destination www.cisco.com??

Selecione uma das seguintes:

11
12
13
14

Explicação

Questão 66 de 154

1

A company has a network address of 192.168.1.64 with a subnet mask of 255.255.255.192. The company wants to create two subnetworks that would contain 10 hosts and 18 hosts respectively. Which two networks would achieve that? (Choose two.)

Selecione uma ou mais das seguintes:

192.168.1.16/28
192.168.1.64/27
192.168.1.128/27
192.168.1.96/28
192.168.1.192/28

Explicação

Questão 67 de 154

1

In a network that uses IPv4, what prefix would best fit a subnet containing 100
hosts?

Selecione uma das seguintes:

/23
/24
/25
/26

Explicação

Questão 68 de 154

1

Which protocol supports rapid delivery of streaming media?

Selecione uma das seguintes:

Transmission Control Protocol
Real-Time Transport Protocol
Secure File Transfer Protocol
Video over Internet Protocol

Explicação

Questão 69 de 154

1

Why would a network administrator use the tracert utility?

Selecione uma das seguintes:

to determine the active TCP connections on a PC
to check information about a DNS name in the DNS server
to identify where a packet was lost or delayed on a network
to display the IP address, default gateway, and DNS server address for a PC

Explicação

Questão 70 de 154

1

Refer to the exhibit. What is the significance of the asterisk (*) in the exhibited output?

Selecione uma das seguintes:

The asterisk shows which file system was used to boot the system.
The asterisk designates which file system is the default file system.
An asterisk indicates that the file system is bootable.
An asterisk designates that the file system has at least one file that uses that file system.

Explicação

Questão 71 de 154

1

Which WLAN security protocol generates a new dynamic key each time a client establishes a connection with the AP?

Selecione uma das seguintes:

EAP
PSK
WEP
WPA

Explicação

Questão 72 de 154

1

Fill in the blank.
Point-to-point communications where both devices can transmit and receive on the medium at the same time are known as _____

Selecione uma das seguintes:

full-duplex
____

Explicação

Questão 73 de 154

1

A host is accessing a Telnet server on a remote network. Which three functions are performed by intermediary network devices during this conversation? (Choose three.)

Selecione uma ou mais das seguintes:

regenerating data signals
acting as a client or a server
providing a channel over which messages travel
applying security settings to control the flow of data
notifying other devices when errors occur
serving as the source or destination of the messages

Explicação

Questão 74 de 154

1

Refer to the exhibit. Which area would most likely be an extranet for the company network that is shown?

Selecione uma das seguintes:

area A
area B
area C
area D

Explicação

Questão 75 de 154

1

Three office workers are using the corporate network. The first employee uses a web browser to view a company web page in order to read some announcements. The second employee accesses the corporate database to perform some financial transactions. The third employee participates in an important live audio conference with other office workers in branch offices. If QoS is implemented on this network, what will be the priorities from highest to lowest of the different data types?

Selecione uma das seguintes:

audio conference, financial transactions, web page
financial transactions, web page, audio conference
audio conference, web page, financial transactions
financial transactions, audio conference, web page

Explicação

Questão 76 de 154

1

During normal operation, from which location do most Cisco switches and routers run the IOS?

Selecione uma das seguintes:

RAM
flash
NVRAM
disk drive

Explicação

Questão 77 de 154

1

A network administrator is making changes to the configuration of a router.
After making the changes and verifying the results, the administrator issues the copy running-config startup-config command. What will happen after this command executes?

Selecione uma das seguintes:

The configuration will be copied to flash.
The configuration will load when the router is restarted.
The new configuration file will replace the IOS file.
The changes will be lost when the router restarts.

Explicação

Questão 78 de 154

1

What information does the loopback test provide?

Selecione uma das seguintes:

The TCP/IP stack on the device is working correctly.
The device has end-to-end connectivity.
DHCP is working correctly.
The Ethernet cable is working correctly.
The device has the correct IP address on the network.

Explicação

Questão 79 de 154

1

What happens when a switch receives a frame and the calculated CRC value is different than the value that is in the FCS field?

Selecione uma das seguintes:

The switch places the new CRC value in the FCS field and forwards the frame.
The switch notifies the source of the bad frame.
The switch drops the frame.
The switch floods the frame to all ports except the port through which the frame arrived to notify the hosts of the error.

Explicação

Questão 80 de 154

1

Which destination address is used in an ARP request frame?

Selecione uma das seguintes:

0.0.0.0
255.255.255.255
FFFF.FFFF.FFFF*
127.0.0.1
01-00-5E-00-AA-23

Explicação

Questão 81 de 154

1

What is the auto-MDIX feature on a switch?

Selecione uma das seguintes:

the automatic configuration of an interface for 10/100/1000 Mb/s operation
the automatic configuration of an interface for a straight-through or a crossover Ethernet cable connection
the automatic configuration of full-duplex operation over a single Ethernet copper or optical cable
the ability to turn a switch interface on or off accordingly if an active connection
is detected

Explicação

Questão 82 de 154

1

What are the two main components of Cisco Express Forwarding (CEF)?
(Choose two.)

Selecione uma ou mais das seguintes:

adjacency tables*
MAC-address tables
routing tables
forwarding information base (FIB)
ARP tables

Explicação

Questão 83 de 154

1

Which statement describes the sequence of processes executed by a router when it receives a packet from a host to be delivered to a host on another network?

Selecione uma das seguintes:

It receives the packet and forwards it directly to the destination host.
It de-encapsulates the packet, selects the appropriate path, and encapsulates the packet to forward it toward the destination host*
It de-encapsulates the packet and forwards it toward the destination host.
It selects the path and forwards it toward the destination host.

Explicação

Questão 84 de 154

1

Refer to the exhibit. Router R1 has two interfaces that were configured with correct IP addresses and subnet masks. Why does the show ip route command output not display any information about the directly connected networks??

Selecione uma das seguintes:

The directly connected networks have to be created manually to be displayed in the routing table.
The routing table will only display information about these networks when the router receives a packet.
The no shutdown command was not issued on these interfaces.
The gateway of last resort was not configured.

Explicação

Questão 85 de 154

1

What happens when part of an Internet television transmission is not delivered
to the destination?

Selecione uma das seguintes:

A delivery failure message is sent to the source host.
The part of the television transmission that was lost is re-sent.
The entire transmission is re-sent.
The transmission continues without the missing portion.*

Explicação

Questão 86 de 154

1

Which three statements characterize the transport layer protocols? (Choose three.)

Selecione uma ou mais das seguintes:

TCP and UDP port numbers are used by application layer protocols.
TCP uses port numbers to provide reliable transportation of IP packets.
UDP uses windowing and acknowledgments for reliable transfer of data.
TCP uses windowing and sequencing to provide reliable transfer of data.
TCP is a connection-oriented protocol. UDP is a connectionless protocol.

Explicação

Questão 87 de 154

1

Which statement is true regarding the UDP client process during a session with a server?

Selecione uma das seguintes:

Datagrams that arrive in a different order than that in which they were sent are not placed in order.
A session must be established before datagrams can be exchanged.
A three-way handshake takes place before the transmission of data begins.
Application servers have to use port numbers above 1024 in order to be UDP capable.

Explicação

Questão 88 de 154

1

Which two components are configured via software in order for a PC to participate in a network environment? (Choose two.)

Selecione uma ou mais das seguintes:

MAC address
IP address
kernel
shell
subnet mask

Explicação

Questão 89 de 154

1

Which two reasons generally make DHCP the preferred method of assigning IP addresses to hosts on large networks? (Choose two.)

Selecione uma ou mais das seguintes:

It eliminates most address configuration errors.
It ensures that addresses are only applied to devices that require a permanent address.
It guarantees that every device that needs an address will get one.
It provides an address only to devices that are authorized to be connected to the network.
It reduces the burden on network support staff.

Explicação

Questão 90 de 154

1

What is the subnet address for the address 2001:DB8:BC15:A:12AB::1/64?

Selecione uma das seguintes:

2001:DB8:BC15::0
2001:DB8:BC15:A::0
2001:DB8:BC15:A:1::1
2001:DB8:BC15:A:12::0

Explicação

Questão 91 de 154

1

What is the purpose of the network security authentication function?

Selecione uma das seguintes:

to require users to prove who they are
to determine which resources a user can access
to keep track of the actions of a user
to provide challenge and response questions

Explicação

Questão 92 de 154

1

Which type of wireless security makes use of dynamic encryption keys each time a client associates with an AP?

Selecione uma das seguintes:

EAP
PSK
WEP
WPA

Explicação

Questão 93 de 154

1

Which field in an IPv4 packet header will typically stay the same during its transmission?

Selecione uma das seguintes:

Packet Length
Destination Address
Flag
Time-to-Live

Explicação

Questão 94 de 154

1

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
Which IPv6 address is assigned to the Serial0/0/0 interface on RT2?

Selecione uma das seguintes:

2001:db8:abc:1::1
2001:db8:abc:5::1
2001:db8:abc:10::15
2001:db8:abc:5::2

Explicação

Questão 95 de 154

1

What must be configured to enable Cisco Express Forwarding (CEF) on most
Cisco devices that perform Layer 3 switching?

Selecione uma das seguintes:

Manually configure next-hop Layer 2 addresses.
Issue the no shutdown command on routed ports.
CEF is enabled by default, so no configuration is necessary.
Manually map Layer 2 addresses to Layer 3 addresses to populate the forwarding information base (FIB).

Explicação

Questão 96 de 154

1

What is the purpose of adjacency tables as used in Cisco Express Forwarding (CEF)?

Selecione uma das seguintes:

to populate the forwarding information base (FIB)
to maintain Layer 2 next-hop addresses
to allow the separation of Layer 2 and Layer 3 decision making
to update the forwarding information base (FIB)

Explicação

Questão 97 de 154

1

Which statement describes a characteristic of the network layer in the OSI
model?

Selecione uma das seguintes:

It manages the data transport between the processes running on each host.
In the encapsulation process, it adds source and destination port numbers to the IP header.
When a packet arrives at the destination host, its IP header is checked by the network layer to determine where the packet has to be routed.
Its protocols specify the packet structure and processing used to carry
the data from one host to another.

Explicação

Questão 98 de 154

1

A user gets an IP address of 192.168.0.1 from the company network
administrator. A friend of the user at a different company gets the same IP address on another PC. How can two PCs use the same IP address and still reach the Internet, send and receive email, and search the web?

Selecione uma das seguintes:

Both users must be using the same Internet Service Provider.
ISPs use Network Address Translation to change a user IP address into an address that can be used on the Internet.
ISPs use Domain Name Service to change a user IP address into a public IP address that can be used on the Internet.
Both users must be on the same network.

Explicação

Questão 99 de 154

1

Why does HTTP use TCP as the transport layer protocol?

Selecione uma das seguintes:

to ensure the fastest possible download speed
because HTTP is a best-effort protocol
because transmission errors can be tolerated easily
because HTTP requires reliable delivery

Explicação

Questão 100 de 154

1

What is the valid most compressed format possible of the IPv6 address 2001:0DB8:0000:AB00:0000:0000:0000:1234?

Selecione uma das seguintes:

2001:DB8:0:AB00::1234
2001:DB8:0:AB::1234
2001:DB8::AB00::1234
2001:DB8:0:AB:0:1234

Explicação

Questão 101 de 154

1

What field content is used by ICMPv6 to determine that a packet has expired?

Selecione uma das seguintes:

TTL field
CRC field
Hop Limit field
Time Exceeded field

Explicação

Questão 102 de 154

1

Which firewall technique blocks incoming packets unless they are responses
to internal requests?

Selecione uma das seguintes:

port filtering
stateful packet inspection
URL filtering
application filtering

Explicação

Questão 103 de 154

1

A network technician is investigating network connectivity from a PC to a
remote host with the address 10.1.1.5. Which command issued on the PC will return to the technician the complete path to the remote host?

Selecione uma das seguintes:

trace 10.1.1.5
traceroute 10.1.1.5
tracert 10.1.1.5ping 10.1.1.5
ping 10.1.1.5

Explicação

Questão 104 de 154

1

Fill in the blank.
To prevent faulty network devices from carrying dangerous voltage levels, equipment must be grounded ___

Selecione uma das seguintes:

correctly
_____

Explicação

Questão 105 de 154

1

What is a possible hazard that can be caused by network cables in a fire?

Selecione uma das seguintes:

The cable insulation could be flammable.
Users could be exposed to excessive voltage.
Network cables could be exposed to water.
The network cable could explode.

Explicação

Questão 106 de 154

1

What device is commonly used to verify a UTP cable?

Selecione uma das seguintes:

a multimeter
an Optical Time Domain Reflectometer
a cable tester
an ohmmeter

Explicação

Questão 107 de 154

1

What needs to be checked when testing a UTP network cable?

Selecione uma das seguintes:

capacitance
wire map
inductance
flexibility

Explicação

Questão 108 de 154

1

Refer to the exhibit. A ping to PC2 is issued from PC0, PC1, and PC3 in this
exact order. Which MAC addresses will be contained in the S1 MAC address table that is associated with the Fa0/1 port?

Selecione uma das seguintes:

just PC0 and PC1 MAC addresses
just the PC0 MAC address
PC0, PC1, and PC2 MAC addresses
just the PC1 MAC address
just the PC2 MAC address

Explicação

Questão 109 de 154

1

Which function is provided by TCP?

Selecione uma das seguintes:

data encapsulation
detection of missing packets
communication session control
path determination for data packets

Explicação

Questão 110 de 154

1

What does a router use to determine where to send data it receives from the
network?

Selecione uma das seguintes:

an ARP table
a routing table
the destination PC physical address
a switching table

Explicação

Questão 111 de 154

1

Which router interface should be used for direct remote access to the router
via a modem?

Selecione uma das seguintes:

an inband router interface
a console port
a serial WAN interface
an AUX port

Explicação

Questão 112 de 154

1

A technician is configuring a router to allow for all forms of management access. As part of each different type of access, the technician is trying to type the command login. Which configuration mode should be entered to do this task?

Selecione uma das seguintes:

user executive mode
global configuration mode
any line configuration mode
privileged EXEC mode

Explicação

Questão 113 de 154

1

Which three statements characterize the transport layer protocols? (Choose three.)

Selecione uma ou mais das seguintes:

TCP and UDP port numbers are used by application layer protocols.
TCP uses port numbers to provide reliable transportation of IP packets.
UDP uses windowing and acknowledgments for reliable transfer of data.
TCP uses windowing and sequencing to provide reliable transfer of data.
TCP is a connection-oriented protocol. UDP is a connectionless protocol.

Explicação

Questão 114 de 154

1

Refer to the exhibit. A TCP segment from a server has been captured by Wireshark, which is running on a host. What acknowledgement number will the host return for the TCP segment that has been received?

Selecione uma das seguintes:

2
21
250
306
2921

Explicação

Questão 115 de 154

1

Which statement is true about an interface that is configured with the IPv6 address command?

Selecione uma das seguintes:

IPv6 traffic-forwarding is enabled on the interface.
A link-local IPv6 address is automatically configured on the interface.
A global unicast IPv6 address is dynamically configured on the interface.
Any IPv4 addresses that are assigned to the interface are replaced with an IPv6 address.

Explicação

Questão 116 de 154

1

Refer to the exhibit. An administrator must send a message to everyone on the router A network. What is the broadcast address for network 172.16.16.0/22?

Selecione uma das seguintes:

172.16.16.255
172.16.20.255
172.16.19.255
172.16.23.255
172.16.255.255

Explicação

Questão 117 de 154

1

A network administrator is variably subnetting a given block of IPv4 addresses.
Which combination of network addresses and prefix lengths will make the most efficient use of addresses when the need is for 2 subnets capable of supporting 10 hosts and 1 subnet that can support 6 hosts?

Selecione uma das seguintes:

10.1.1.128/28
10.1.1.144/28
10.1.1.160/29
10.1.1.128/28
10.1.1.144/28
10.1.1.160/28
10.1.1.128/28
10.1.1.140/28
10.1.1.158/26
10.1.1.128/26
10.1.1.144/26
10.1.1.160/26
10.1.1.128/26
10.1.1.140/26
10.1.1.158/28

Explicação

Questão 118 de 154

1

How many additional bits should be borrowed from a /26 subnet mask in order to create subnets for WAN links that need only 2 useable addresses?

Selecione uma das seguintes:

2
3
4
5
6

Explicação

Questão 119 de 154

1

Refer to the exhibit. The administrator configured the access to the console and the vty lines of a router. Which conclusion can be drawn from this configuration?

Selecione uma das seguintes:

Unauthorized individuals can connect to the router via Telnet without entering a password.
Because the IOS includes the login command on the vty lines by default, access to the device via Telnet will require authentication.
Access to the vty lines will not be allowed via Telnet by anyone.
Because the login command was omitted, the password cisco command is not applied to the vty lines.

Explicação

Questão 120 de 154

1

An administrator issued the service password-encryption command to apply encryption to the passwords configured for enable password, vty, and console lines. What will be the consequences if the administrator later issues the no service password-encryption command?

Selecione uma das seguintes:

It will remove encryption from all passwords.
It will reverse only the vty and console password encryptions.
It will not reverse any encryption.
It will reverse only the enable password encryption.

Explicação

Questão 121 de 154

1

After making configuration changes, a network administrator issues a copy running-config startup-config command in a Cisco switch. What is the result of issuing this command?

Selecione uma das seguintes:

The new configuration will be stored in flash memory.
The new configuration will be loaded if the switch is restarted.
The current IOS file will be replaced with the newly configured file.
The configuration changes will be removed and the original configuration will be restored.

Explicação

Questão 122 de 154

1

What are two features of ARP? (Choose two.)

Selecione uma das seguintes:

If a host is ready to send a packet to a local destination device and it has the IP address but not the MAC address of the destination, it generates an ARP broadcast.*
An ARP request is sent to all devices on the Ethernet LAN and contains the IP address of the destination host and its multicast MAC address.
When a host is encapsulating a packet into a frame, it refers to the MAC address table to determine the mapping of IP addresses to MAC addresses.
If no device responds to the ARP request, then the originating node will broadcast the data packet to all devices on the network segment.
If a device receiving an ARP request has the destination IPv4 address, it responds with an ARP reply.

Explicação

Questão 123 de 154

1

A network administrator is enabling services on a newly installed server. Which two statements describe how services are used on a server? (Choose two.)

Selecione uma ou mais das seguintes:

Data sent with a service that uses TCP is received in the order the data was sent.
A port is considered to be open when it has an active server application that is assigned to it.
An individual server can have two services that are assigned to the same port number.
An individual server cannot have multiple services running at the same time.
Server security can be improved by closing ports that are associated with unused services.

Explicação

Questão 124 de 154

1

Given the binary address of 11101100 00010001 00001100 00001010, which address does this represent in dotted decimal format?

Selecione uma das seguintes:

234.17.10.9
234.16.12.10
236.17.12.6
236.17.12.10

Explicação

Questão 125 de 154

1

A particular telnet site does not appear to be responding on a Windows 7 computer. What command could the technician use to show any cached DNS entries for this web page?

Selecione uma das seguintes:

ipconfig /all
ipconfig /displaydns
arp -a
nslookup

Explicação

Questão 126 de 154

1

Fill in the blank.
Network devices come in two physical configurations. Devices that have expansion slots that provide the flexibility to add new modules have a Modular

Selecione uma das seguintes:

configuration.
____

Explicação

Questão 127 de 154

1

Refer to the exhibit. What is the maximum TIL value that is used to reach the destination www.cisco.com?

Selecione uma das seguintes:

11
12
13
14

Explicação

Questão 128 de 154

1

Which statement is true about DHCP operation?

Selecione uma das seguintes:

When a device that is configured to use DHCP boots, the client broadcasts a DHCPDISCOVER message to identify any available DHCP servers on the network.
A client must wait for lease expiration before it sends another DHCPREOUEST message.
The DHCPDISCOVER message contains the IP address and sub net masK to be assigned, the IP address of the DNS server, and the IP address of the default gateway.
If the client receives several DHCPOFFER messages from different servers, it sends a unicast DHCPREOUEST message to the server from which it chooses to obtain the IP information.

Explicação

Questão 129 de 154

1

Which type of wireless security is easily compromised?

Selecione uma das seguintes:

EAP
PSK
WEP
WPA

Explicação

Questão 130 de 154

1

A network administrator notices that the throughput on the network appears
lower than expected when compared to the end-to-end network bandwidth. Which three factors can explain this difference? (Choose three.)

Selecione uma ou mais das seguintes:

the amount of traffic
the type of data encapsulation in use
the type of traffic
the number and type of network devices that the data is crossing
he bandwidth of the connection to the ISP
the reliability of the network backbone

Explicação

Questão 131 de 154

1

A host PC is attempting to lease an address through DHCP. What message is sent by the server to the client know it is able to use the provided IP information?

Selecione uma das seguintes:

DHCPDISCOVER
DHCPOFFER
DHCPPREQUEST
DHCPACK
DHCPNACK

Explicação

Questão 132 de 154

1

A network administrator is configuring access control to switch SW1. If the administrator uses console line to connect to the switch, which password is needed to access user EXEC mode?

Selecione uma das seguintes:

letmein
secretin
lineconin
linevtyin

Explicação

Questão 133 de 154

1

How many bits would need to be borrowed if a network admin were given the IP addressing scheme of 172.16.0.0/16 and needed no more than 16 subnet with equal number of hosts?

Selecione uma das seguintes:

10
12
2
4
8

Explicação

Questão 134 de 154

1

It will give 4 options about ping, the correct one is:

Selecione uma das seguintes:

The PC2 will be able to ping 192.168.1.1
-------

Explicação

Questão 135 de 154

1

Which statement best describes the operation of the File Transfer Protocol?

Selecione uma das seguintes:

An FTP client uses a source port number of 21 and a randomly generated destination port number during the establishment of control traffic with an FTP Server.
An FTP client uses a source port number of 20 and a randomly generated destination port number during the establishment of data traffic with an FTP Server.
An FTP server uses a source port number of 20 and a randomly generated destination port number during the establishment of control traffic with an FTP client.
An FTP server uses a source port number of 21 and a randomly generated destination port number during the establishment of control traffic with an FTP client.

Explicação

Questão 136 de 154

1

A client is establishing a TCP session with a server. How is the acknowledgment number in the response segment to the client determined?

Selecione uma das seguintes:

The acknowledgment number field is modified by adding 1 to the randomly chosen initial sequence number in response to the client.
The acknowledgment number is set to 11 to signify an acknowledgment packet and synchronization packet back to the client.
The acknowledgment number field uses a random source port number in response to the client.
The acknowledgment number is set to 1 to signify an acknowledgment packet back to the client.

Explicação

Questão 137 de 154

1

Why does layer 3 device perform the ANDing process on a destination IP and subnet Mask?

Selecione uma das seguintes:

to identify host address and destination host;
to identify network address of destination host;
to identify faulty frames;
to identify broadcast address of destination network;

Explicação

Questão 138 de 154

1

There was also a question about if you activated service password encryption
in the past and you prompt “no service password encryption” what password are modified ?

Selecione uma das seguintes:

no password at all
password of the lines are in clear
login password
?

Explicação

Questão 139 de 154

1

What type of communication rule would best describe CSMA/CD?

Selecione uma das seguintes:

message encapsulation
flow control
message encoding
access method

Explicação

Questão 140 de 154

1

What is the primary reason to subnet IPv6 prefixes?

Selecione uma das seguintes:

to conserve IPv6 addresses
to avoid wasting IPv6 addresses
to conserve IPv6 prefixes
to create a hierarchical Layer 3 network design

Explicação

Questão 141 de 154

1

Which statement describes data throughput?

Selecione uma das seguintes:

It is the measure of the bits transferred across the media under perfect conditions
It is the measure of the bits transferred across the media over a given period of time.
It indicates the capacity of a particular medium to carry data.
It is the guaranteed data transfer rate offered by an ISP.

Explicação

Questão 142 de 154

1

Fill in the blank. Use a number.
IPv4 multicast addresses are directly mapped to IEEE 802 (Ethernet) MAC addresses using the last _____ of the 28 available bits in the IPv4 multicast group
address.

Selecione uma das seguintes:

4
-----

Explicação

Questão 143 de 154

1

How could a faulty network device create a source of hazard for a user?
(Choose two.)

Selecione uma ou mais das seguintes:

It could stop functioning.
It could explode.
It could apply dangerous voltage to other pieces of equipment.
It could produce an unsafe electromagnetic field.
It could apply dangerous voltage to itself.

Explicação

Questão 144 de 154

1

What are three important considerations when planning the structure of an IP addressing scheme? (Choose three.)

Selecione uma ou mais das seguintes:

implementing new services
conserving addresses
monitoring security and performance
documenting the network
providing and controlling access
preventing duplication of addresses

Explicação

Questão 145 de 154

1

What is the metric value that is used to reach the 10.1.1.0 network in the following routing table entry? D 10.1.1.0/24 [90/2170112] via 209.165.200.226, 00:00:05, Serial0/0/0

Selecione uma das seguintes:

24
90
05
2170112

Explicação

Questão 146 de 154

1

Which two services or protocols use the preferred UDP protocol for fast transmission and low overhead? (Choose two)

Selecione uma ou mais das seguintes:

VoIP
DNS
HTTP
FTP
POP3

Explicação

Questão 147 de 154

1

What action does a DHCPv4 client take if it receives more than one DHCPOFFER from multiple DHCP servers?

Selecione uma das seguintes:

It sends a DHCPREQUEST that identifies which lease offer the client is accepting.
It sends a DHCPNAK and begins the DHCP process over again.
It discards both offers and sends a new DHCPDISCOVER.
It accepts both DHCPOFFER messages and sends a DHCPACK.

Explicação

Questão 148 de 154

1

To what legacy address class does the address 10.0.0.0 belong?

Selecione uma das seguintes:

Class B
Class D
Class A
Class C
Class E

Explicação

Questão 149 de 154

1

What type of communication medium is used with a wireless LAN connection?

Selecione uma das seguintes:

radio waves
fiber
microwave
UTP

Explicação

Questão 150 de 154

1

Which method of IPv6 prefix assignment relies on the prefix contained in RA messages?

Selecione uma das seguintes:

EUI-64
static
SLAAC
stateful DHCPv6

Explicação

Questão 151 de 154

1

What is a characteristic of DNS?

Selecione uma das seguintes:

DNS servers can cache recent queries to reduce DNS query traffic.
DNS servers are programmed to drop requests for name translations that are not within their zone.
All DNS servers must maintain mappings for the entire DNS structure.
DNS relies on a hub-and-spoke topology with centralized servers.

Explicação

Questão 152 de 154

1

What is the prefix for the host address 2001:DB8:BC15:A:12AB::1/64?

Selecione uma das seguintes:

2001:DB8:BC15
2001:DB8:BC15:A
2001:DB8:BC15:A:1
2001:DB8:BC15:A:12

Explicação

Questão 153 de 154

1

What information is maintained in the CEF adjacency table?

Selecione uma das seguintes:

Layer 2 next hops
MAC address to IPv4 address mappings
IP address to interface mappings
the IP addresses of all neighboring routers

Explicação

Questão 154 de 154

1

Which command can an administrator issue on a Cisco router to send debug
messages to the vty lines?

Selecione uma das seguintes:

terminal monitor
logging console
logging buffered
logging synchronous

	Criado por aaa aaa mais de 6 anos atrás

CCNA 1 Old Final exam 2018

CCNA 1 Old Final exam

Questão 1 de 154

What is a function of the data link layer?

Selecione uma das seguintes:

Explicação

Questão 2 de 154

Which communication tool allows real-time collaboration?

Selecione uma das seguintes:

Explicação

Questão 3 de 154

A host is accessing a Web server on a remote network. Which three functions are performed by intermediary network devices during this conversation? (Choose three.)

Selecione uma ou mais das seguintes:

Explicação

Questão 4 de 154

Refer to the exhibit. From which location did this router load the IOS?

Selecione uma das seguintes:

Explicação

Questão 5 de 154

Refer to the exhibit. Which action will be successful?

Selecione uma das seguintes:

Explicação

Questão 6 de 154

Fill in the blank. Port numbers ranging from 0 to 1023 are considered to be _______ ports.

Selecione uma das seguintes:

Explicação

Questão 7 de 154

Fill in the blank. ISOC, IANA, EIA, and IEEE represent _______ organizations which help to promote and maintain an open Internet.

Selecione uma das seguintes:

Explicação

Questão 8 de 154

Refer to the exhibit. An administrator is trying to configure the switch but receives the error message that is displayed in the exhibit. What is the problem?

Selecione uma das seguintes:

Explicação

Questão 9 de 154

A company is expanding its business to other countries. All branch offices must remain connected to corporate headquarters at all times. Which network technology is required to support this requirement?

Selecione uma das seguintes:

Explicação

Questão 10 de 154

A network administrator is upgrading a small business network to give high priority to real-time applications traffic. What two types of network services is the network administrator trying to accommodate? (Choose two.)

Selecione uma ou mais das seguintes:

Explicação

Questão 11 de 154

Which IPv4 address can be pinged to test the internal TCP/IP operation of a host?

Selecione uma das seguintes:

Explicação

Questão 12 de 154

What three application layer protocols are part of the TCP/IP protocol suite? (Choose three.)

Selecione uma ou mais das seguintes:

Explicação

Questão 13 de 154

Which two protocols function at the internet layer? (Choose two)

Selecione uma ou mais das seguintes:

Explicação

Questão 14 de 154

Which publicly available resources describe protocols, processes, and technologies for the Internet but do not give implementation details?

Selecione uma das seguintes:

Explicação

Questão 15 de 154

Which address on a PC does not change, even if the PC is moved to a different network?

Selecione uma das seguintes:

Explicação

Questão 16 de 154

What is the protocol that is used to discover a physical address from a known logical address and what message type does it use?

Selecione uma das seguintes:

Explicação

Questão 17 de 154

What will happen if the default gateway address is incorrectly configured on a host?

Selecione uma das seguintes:

Explicação

Questão 18 de 154

What is an important function of the physical layer of the OSI model?

Selecione uma das seguintes:

Explicação

Questão 19 de 154

Which two statements describe the characteristics of fiber-optic cabling? (Choose two.)

Selecione uma ou mais das seguintes:

Explicação

Questão 20 de 154

What is contained in the trailer of a data-link frame?

Fill in the blank.
Port numbers ranging from 0 to 1023 are considered to be _______ ports.

Fill in the blank.
ISOC, IANA, EIA, and IEEE represent _______ organizations which help to promote and maintain an open Internet.

What three application layer protocols are part of the TCP/IP protocol suite?
(Choose three.)

Which two statements correctly describe a router memory type and its
contents? (Choose two.)

What is the effect of configuring the ipv6 unicast-routing command on a
router?