9027525
Descripción
Test por Yoab Rodriguez, actualizado hace más de 1 año
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Creado por Yoab Rodriguez
hace más de 7 años
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|
Pregunta 1
Pregunta
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?
Respuesta
-
LAN
-
MAN
-
WAN
-
WLAN
Pregunta 2
Pregunta
2 A home user is looking for an ISP connection that provides high speed digital transmission over regular phone lines. What ISP connection type should be used?
Respuesta
-
DSL
-
dial-up
-
satellite
-
cell modem
-
cable modem
Pregunta 3
Pregunta
3 How does quality of service help a network support a wide range of applications and services?
Respuesta
-
by limiting the impact of a network failure
-
by allowing quick recovery from network failures
-
by providing mechanisms to manage congested network traffic
-
by providing the ability for the network to grow to accommodate new users
Pregunta 4
Pregunta
4 On which switch interface would an administrator configure an IP address so that the switch can be managed remotely?
Respuesta
-
FastEthernet0/1
-
VLAN 1
-
vty 0
-
console 0
Pregunta 5
Pregunta
5 After making configuration changes on a Cisco switch, a network administrator issues a copy running-config startup-config command. What is the result of issuing this command?
Respuesta
-
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.
Pregunta 6
Pregunta
6 Refer to the exhibit. A network administrator is configuring access control to switch SW1. If the administrator has already logged into a Telnet session on the switch, which password is needed to access privileged EXEC mode?
Image:
1 (image/gif)
Respuesta
-
letmein
-
secretin
-
lineconin
-
linevtyin
Pregunta 7
Pregunta
7 Which connection provides a secure CLI session with encryption to a Cisco switch?
Respuesta
-
a console connection
-
an AUX connection
-
a Telnet connection
-
an SSH connection
Pregunta 8
Pregunta
8 A network technician is attempting to configure an interface by entering the following command: SanJose(config)# ip address 192.168.2.1 255.255.255.0. The command is rejected by the device. What is the reason for this?
Respuesta
-
The command is being entered from the wrong mode of operation.
-
The command syntax is wrong.
-
The subnet mask information is incorrect.
-
The interface is shutdown and must be enabled before the switch will accept the IP address.
Pregunta 9
Pregunta
9 What function does pressing the Tab key have when entering a command in IOS?
Respuesta
-
It aborts the current command and returns to configuration mode.
-
It exits configuration mode and returns to user EXEC mode.
-
It moves the cursor to the beginning of the next line.
-
It completes the remainder of a partially typed word in a command.
Pregunta 10
Pregunta
10 What protocol is responsible for controlling the size of segments and the rate at which segments are exchanged between a web client and a web server?
Respuesta
-
TCP
-
IP
-
HTTP
-
Ethernet
Pregunta 11
Pregunta
11 What layer is responsible for routing messages through an internetwork in the TCP/IP model?
Respuesta
-
internet
-
transport
-
network access
-
session
Pregunta 12
Pregunta
12 Which statement accurately describes a TCP/IP encapsulation process when a PC is sending data to the network?
Respuesta
-
Data is sent from the internet layer to the network access layer.
-
Packets are sent from the network access layer to the transport layer.
-
Segments are sent from the transport layer to the internet layer.
-
Frames are sent from the network access layer to the internet layer.
Pregunta 13
Pregunta
13 What unique address is embedded in an Ethernet NIC and used for communication on an Ethernet network?
Respuesta
-
host address
-
IP address
-
MAC address
-
network address
Pregunta 14
Pregunta
14 A network administrator is troubleshooting connectivity issues on a server. Using a tester, the administrator notices that the signals generated by the server NIC are distorted and not usable. In which layer of the OSI model is the error categorized?
Respuesta
-
presentation layer
-
network layer
-
physical layer
-
data link layer
Pregunta 15
Pregunta
15 A network administrator is measuring the transfer of bits across the company backbone for a mission critical financial application. The administrator notices that the network throughput appears lower than the bandwidth expected. Which three factors could influence the differences in throughput? (Choose three.)
Respuesta
-
the amount of traffic that is currently crossing the network
-
the sophistication of the encapsulation method applied to the data
-
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 bandwidth of the WAN connection to the Internet
-
the reliability of the gigabit Ethernet infrastructure of the backbone
Pregunta 16
Pregunta
16 Which procedure is used to reduce the effect of crosstalk in copper cables?
Respuesta
-
requiring proper grounding connections
-
twisting opposing circuit wire pairs together
-
wrapping the bundle of wires with metallic shielding
-
designing a cable infrastructure to avoid crosstalk interference
-
avoiding sharp bends during installation
Pregunta 17
Pregunta
17 What is a characteristic of the LLC sublayer?
Respuesta
-
It provides the logical addressing required that identifies the device.
-
It provides delimitation of data according to the physical signaling requirements of the medium.
-
It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.
-
It defines software processes that provide services to the physical layer.
Pregunta 18
Pregunta
18 What method is used to manage contention-based access on a wireless network?
Respuesta
-
CSMA/CD
-
priority ordering
-
CSMA/CA
-
token passing
Pregunta 19
Pregunta
19 During the encapsulation process, what occurs at the data link layer for a PC connected to an Ethernet network?
Respuesta
-
An IP address is added.
-
The logical address is added.
-
The physical address is added.
-
The process port number is added.
Pregunta 20
Pregunta
20 What are the three primary functions provided by Layer 2 data encapsulation? (Choose three.)
Respuesta
-
error correction through a collision detection method
-
session control using port numbers
-
data link layer addressing
-
placement and removal of frames from the media
-
detection of errors through CRC calculations
-
delimiting groups of bits into frames
-
conversion of bits into data signals
Pregunta 21
Pregunta
21 What are two characteristics of Ethernet MAC addresses? (Choose two.)
Respuesta
-
They are globally unique.
-
They are routable on the Internet.
-
They are expressed as 12 hexadecimal digits.
-
MAC addresses use a flexible hierarchical structure.
-
MAC addresses must be unique for both Ethernet and serial interfaces on a device.
Pregunta 22
Pregunta
22 If a device receives an Ethernet frame of 60 bytes, what will it do?
Respuesta
-
drop the frame
-
process the frame as it is
-
send an error message to the sending device
-
add random data bytes to make it 64 bytes long and then forward it
Pregunta 23
Pregunta
23 What will a host on an Ethernet network do if it receives a frame with a destination MAC address that does not match its own MAC address?
Respuesta
-
It will discard the frame.
-
It will forward the frame to the next host.
-
It will remove the frame from the media.
-
It will strip off the data-link frame to check the destination IP address.
Pregunta 24
Pregunta
24 Under which two circumstances will a switch flood a frame out of every port except the port that the frame was received on? (Choose two.)
Respuesta
-
The frame has the broadcast address as the destination address.
-
The destination address is unknown to the switch.
-
The source address in the frame header is the broadcast address.
-
The source address in the frame is a multicast address.
-
The destination address in the frame is a known unicast address.
Pregunta 25
Pregunta
25 Which switching method has the lowest level of latency?
Respuesta
-
cut-through
-
store-and-forward
-
fragment-free
-
fast-forward
Pregunta 26
Pregunta
26 Which two commands can be used on a Windows host to display the routing table? (Choose two.)
Respuesta
-
netstat -s
-
route print
-
show ip route
-
netstat -r
-
tracert
Pregunta 27
Pregunta
27 Which two functions are primary functions of a router? (Choose two.)
Respuesta
-
packet forwarding
-
microsegmentation
-
domain name resolution
-
path selection
-
flow control
Pregunta 28
Pregunta
28 What are the three ranges of IP addresses that are reserved for internal private use? (Choose three.)
Respuesta
-
10.0.0.0/8
-
64.100.0.0/14
-
127.16.0.0/12
-
172.16.0.0/12
-
192.31.7.0/24
-
192.168.0.0/16
Pregunta 29
Pregunta
29 What purpose does NAT64 serve in IPv6?
Respuesta
-
It converts IPv6 packets into IPv4 packets.
-
It translates private IPv6 addresses into public IPv6 addresses.
-
It enables companies to use IPv6 unique local addresses in the network.
-
It converts regular IPv6 addresses into 64-bit addresses that can be used on the Internet.
-
It converts the 48-bit MAC address into a 64-bit host address that can be used for automatic host addressing.
Pregunta 30
Pregunta
30 What is the binary representation of 0xCA?
Respuesta
-
10111010
-
11010101
-
11001010
-
11011010
Pregunta 31
Pregunta
31 At a minimum, which address is required on IPv6-enabled interfaces?
Respuesta
-
link-local
-
unique local
-
site local
-
global unicast
Pregunta 32
Pregunta
32 Which service provides dynamic global IPv6 addressing to end devices without using a server that keeps a record of available IPv6 addresses?
Respuesta
-
stateful DHCPv6
-
SLAAC
-
static IPv6 addressing
-
stateless DHCPv6
Pregunta 33
Pregunta
33 What is the purpose of the command ping ::1?
Respuesta
-
It tests the internal configuration of an IPv6 host.
-
It tests the broadcast capability of all hosts on the subnet.
-
It tests the multicast connectivity to all hosts on the subnet.
-
It tests the reachability of the default gateway for the network.
Pregunta 34
Pregunta
34 How many usable IP addresses are available on the 192.168.1.0/27 network?
Respuesta
-
256
-
254
-
62
-
30
-
16
-
32
Pregunta 35
Pregunta
35 Which subnet would include the address 192.168.1.96 as a usable host address?
Respuesta
-
192.168.1.64/26
-
192.168.1.32/27
-
192.168.1.32/28
-
192.168.1.64/29
Pregunta 36
Pregunta
36 A network administrator wants to have the same subnet mask for three subnetworks at a small site. The site has the following networks and numbers of devices:
Subnetwork A: IP phones – 10 addresses
Subnetwork B: PCs – 8 addresses
Subnetwork C: Printers – 2 addresses
What single subnet mask would be appropriate to use for the three subnetworks?
Respuesta
-
255.255.255.0
-
255.255.255.240
-
255.255.255.248
-
255.255.255.252
Pregunta 37
Pregunta
37 Which statement is true about variable-length subnet masking?
Respuesta
-
Each subnet is the same size.
-
The size of each subnet may be different, depending on requirements.
-
Subnets may only be subnetted one additional time.
-
Bits are returned, rather than borrowed, to create additional subnets.
Pregunta 38
Pregunta
38 What subnet mask is needed if an IPv4 network has 40 devices that need IP addresses and address space is not to be wasted?
Respuesta
-
255.255.255.0
-
255.255.255.128
-
255.255.255.192
-
255.255.255.224
-
255.255.255.240
Pregunta 39
Pregunta
39 What are two characteristics shared by TCP and UDP? (Choose two.)
Respuesta
-
default window size
-
connectionless communication
-
port numbering
-
3-way handshake
-
ability to to carry digitized voice
-
use of checksum
Pregunta 40
Pregunta
40 Why are port numbers included in the TCP header of a segment?
Respuesta
-
to indicate the correct router interface that should be used to forward a segment
-
to identify which switch ports should receive or forward the segment
-
to determine which Layer 3 protocol should be used to encapsulate the data
-
to enable a receiving host to forward the data to the appropriate application
-
to allow the receiving host to assemble the packet in the proper order
Pregunta 41
Pregunta
41 What are two ways that TCP uses the sequence numbers in a segment? (Choose two.)
Respuesta
-
to identify missing segments at the destination
-
to reassemble the segments at the remote location
-
to specify the order in which the segments travel from source to destination
-
to limit the number of segments that can be sent out of an interface at one time
-
to determine if the packet changed during transit
Pregunta 42
Pregunta
42 Which two protocols operate at the highest layer of the TCP/IP protocol stack? (Choose two.)
Respuesta
-
DNS
-
Ethernet
-
IP
-
POP
-
TCP
-
UDP
Pregunta 43
Pregunta
43 Which domain name would be an example of a top-level domain?
Respuesta
-
www.cisco.com
-
cisco.com
-
.com
-
root.cisco.com
Pregunta 44
Pregunta
44 What is one difference between the client-server and peer-to-peer network models?
Respuesta
-
Only in the client-server model can file transfers occur.
-
Every device in a peer-to-peer network can function as a client or a server.
-
A peer-to-peer network transfers data faster than a transfer using a client-server network.
-
A data transfer that uses a device serving in a client role requires that a dedicated server be present.
Pregunta 45
Pregunta
45 Which networking model is being used when an author uploads one chapter document to a file server of a book publisher?
Respuesta
-
peer-to-peer
-
master-slave
-
client/server
-
point-to-point
Pregunta 46
Pregunta
46 A wireless host needs to request an IP address. What protocol would be used to process the request?
Respuesta
-
FTP
-
HTTP
-
DHCP
-
ICMP
-
SNMP
Pregunta 47
Pregunta
47 What network service resolves the URL entered on a PC to the IP address of the destination server?
Respuesta
-
DNS
-
DHCP
-
FTP
-
SNMP
Pregunta 48
Pregunta
48 A network engineer is analyzing reports from a recently performed network baseline. Which situation would depict a possible latency issue?
Respuesta
-
a change in the bandwidth according to the show interfaces output
-
a next-hop timeout from a traceroute
-
an increase in host-to-host ping response times
-
a change in the amount of RAM according to the show version output
Pregunta 49
Pregunta
49 Which firewall feature is used to ensure that packets coming into a network are legitimate responses to requests initiated from internal hosts?
Respuesta
-
stateful packet inspection
-
URL filtering
-
application filtering
-
packet filtering
Pregunta 50
Pregunta
50 What is one indication that a Windows computer did not receive an IPv4 address from a DHCP server?
Respuesta
-
The computer cannot ping 127.0.0.1.
-
Windows displays a DHCP timeout message.
-
The computer receives an IP address that starts with 169.254.
-
The computer cannot ping other devices on the same network with IP addresses in the 169.254.0.0/16 range.
Pregunta 51
Pregunta
51 Which command can an administrator issue on a Cisco router to send debug messages to the vty lines?
Respuesta
-
terminal monitor
-
logging console
-
logging buffered
-
logging synchronous
Pregunta 52
Pregunta
52 Fill in the blank.
During data communications, a host may need to send a single message to a specific group of destination hosts simultaneously. This message is in the form of a [blank_start]———-[blank_end] message.
Respuesta
-
multicast
Pregunta 53
Pregunta
53 Match the description with the associated IOS mode. (Not all options are used.)
Respuesta
-
Image:2 (image/jpeg)
-
seguir
Pregunta 54
Pregunta
54 Refer to the exhibit. Match the packets with their destination IP address to the exiting interfaces on the router. (Not all options are used.)
Respuesta
-
Image:3 (image/png)
-
serguir
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