CCNA 2 Final V4.0 Answers

8/14/2019 CCNA 2 Final V4.0 Answers

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CCNA Discovery 4.1 - CCNA Discovery Answers

http://ccna-discovery-4.blogspot.com/

Router(config)# enable cisco

Router(config)# encryption-password all

Router(config)# enable login encrypted

Router(config)# enable password encryption

Router(config)# service password-encryption

4

A new network is to be configured on a router. Which of the following tasks must be

completed to configure this interface and implement dynamic IP routing for the newnetwork? (Choose three.)

Select the routing protocol to be configured.

Assign an IP address and subnet mask to the interface.

Update the ip host configuration information with the device name and new interface

IP address.

Configure the routing protocol with the new network IP address.

Configure the routing protocol with the new interface IP address and subnet mask.

Configure the routing protocol in use on all other enterprise routers with the new

network information.

5

How does TCP ensure the reliable transfer of data?

If data segments are not received from the source, the destination requests that thesegments be resent.

If an acknowledgment of the transmitted segments is not received from the destination

in a predetermined amount of the time, the source resends the data.

TCP uses the SYN-ACK portion of the three-way handshake to ensure that all data

has been received.

The TCP Protocol Interpreter process verifies the transmitted data at source and

destination.


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6

A network administrator is asked to design a system to allow simultaneous access to

the Internet for 250 users. The ISP for this network can only supply five public IPs.

What can be used to accomplish this task?

routable translation

dynamic translation

static translation

port address translation

7What is the most commonly used exterior routing protocol?

BGP

RIP

OSPF

EIGRP

8

Refer to the exhibit. The network administrator needs to configure the router with a

name. Which command will the administrator use to configure the router name?

Router# ip hostname Boise

Router# enable hostname Boise

Router(config-line)# name Boise

Router(config)# hostname Boise

Router(config)# ip hostname Boise

9

Why are port numbers included in the TCP header of a segment?

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


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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

10

What is the purpose of the routing process?

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

11

Which two statements are true about the use of the debug ip rip command on a Cisco

router? (Choose two.)

The debug ip rip command displays RIP routing activity in real time.

The debug ip rip command can be issued at the user EXEC configuration mode.

The debug ip rip command displays a combination of the information that is displayed

by the show ip route and show ip protocols commands.

Because of router processor usage, the debug ip rip command should be used only

when necessary.

The debug ip rip command should be used instead of the show ip route commandwhenever possible.

12

What minimum configurations must be set on a host to allow a request to be sent to

http://www.cisco.com/? (Choose four.)

DNS server

WINS server

IP address
http://www.cisco.com/


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NetBIOS

subnet mask

default gateway

13

A Catalyst 2960 switch has been taken out of storage to be used as a temporary

replacement for another switch that needs to be repaired. About a minute after the

switch has started, the SYST LED on the front of the switch transitions from blinking

green to amber. What is the meaning of the amber SYST LED?

The switch has no configuration file in NVRAM.

The switch has failed POST and must be sent for service.

The switch is functioning properly.

The switch is in half-duplex mode.

14

Refer to the exhibit. Which combination of cables and symbols is correct?

A - crossover, B - straight-through, C - straight-through

A - crossover, B - rollover, C - straight-through

A - straight-through, B -crossover, C - straight-through

A - straight-through, B -straight-through, C - straight-through

A - straight-through, B - straight-through, C - crossover

A - rollover, B - straight-through, C - straight-through

15

After an unsuccessful ping to the local router, the technician decides to investigate the

router. The technician observes that the lights and fan on the router are not

operational. In which layer of the OSI model is the problem most likely occurring?

transport

network


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data link

physical

16

What are three characteristics of the TCP protocol? (Choose three.)

exchanges datagrams unreliably

is used to send IP error messages

forces the retransmission of unacknowledged packets

creates a virtual session between end-user applications

carries the IP address of the destination host in the TCP header

is responsible for breaking messages into segments and reassembling them at their

destination

17

Refer to the exhibit. The network shown is connected using services from the same

ISP. How will the Fohi router dynamically learn routes to the 192.168.16.16/28,192.168.16.32/28, and 192.168.16.64/28 subnetworks?

with BGP

with a static route

with a directly connected route

with an interior routing protocol

18

Refer to the exhibit. Which type of UTP cable should be used to connect Host A to

Switch1?

rollover

console

crossover

straight-through


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How does a router know of paths to destination networks? (Choose two.)

inspection of the destination IP address in data packets

ARP requests from connected routers

manual configuration of routes

updates from other routers

DHCP information broadcasts

updates from the SMTP management information base

23

Refer to the exhibit. Which two statements describe the data conversation shown?

(Choose two.)

The data conversation was started by the HTTP application process running on the

client.

The data conversation is identified by TCP port 80 on the client.

The user started the data conversation by sending an e-mail.

The IP address of the Internet server is 192.168.17.43.

The Internet server will send data to port 8547 on the client.

24

What is one purpose of the TCP three-way handshake?

sending echo requests from the source to the destination host to establish the presence

of the destination

determining the IP address of the destination host in preparation for data transfer

requesting the destination to transfer a binary file to the source

synchronizing sequence numbers between source and destination in preparation for

data transfer

25

Which type of address is 192.168.17.111/28?


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host address

network address

broadcast address

multicast address

26

A customer reports connectivity problems to an ISP technician. Upon questioning the

customer, the technician discovers that all network applications are functioning except

for FTP. What should the technician suspect is the problem?

misconfigured firewall

bad port on switch or hub

misconfigured IP addressing on the customer's workstation

wrong DNS server configured on the customer's workstation

wrong default gateway configured on the customer's workstation

27

The show ip route command was executed on one of the routers shown in the graphic

and the following output was displayed:

C 192.168.4.0/24 is directly connected, Serial0/0

R 192.168.5.0/24 [120/1] via 192.168.4.2, 00:00:19, Serial0/0

R 192.168.1.0/24 [120/2] via 192.168.3.1, 00:00:20, Serial0/1

R 192.168.2.0/24 [120/2] via 192.168.3.1, 00:00:20, Serial0/1

C 192.168.3.0/24 is directly connected, Serial0/1

From which router was this command executed?

A

B

C

D

28Refer to the exhibit. Which two sets of commands are required to configure


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passwords for all management ports on a Catalyst 2960 switch? (Choose two.)

ALSwitch(config)# interface vlan 1

ALSwitch(config-if)# password ciscoALSwitch(config-if)# login

ALSwitch(config)# line vty 0 4

ALSwitch(config-line)# password cisco

ALSwitch(config-line)# login

ALSwitch(config)# line vty 0 15



ALSwitch(config)# enable secret classALSwitch(config)# enable password cisco

ALSwitch(config)# interface fa0/1

ALSwitch(config-if)# password cisco

ALSwitch(config-if)# no shutdown

ALSwitch(config)# line cons 0



29

A user reports being able to access the Internet but not being able to download e-mail

from the mail server at the ISP. What should the user check on the user workstation?

the POP3 and SMTP server settings in the e-mail application

the patch cable connections at the back of the workstation and at the wall plate

the DHCP settings in the operating system

the IP address, mask, and default gateway values

the NIC drivers

30

Refer to the graphic. Which command will configure a static route on Router A to

direct traffic from LAN A that is destined for LAN C?

RouterA(config)# ip route 192.168.4.0 255.255.255.0 192.168.5.2



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31

Which subnet masks could be used when subnetting a Class B IP address? (Choose

two.)

255.255.255.240

255.255.192.0

255.255.0.0

255.192.0.0

240.0.0.0

255.0.0.0

32

Refer to the exhibit. The network administrator has configured the RTA and RTB

interfaces. In order to allow hosts that are attached to RTA to reach the server that is

attached to RTB, a static route from RTA to the server LAN and a default route from

RTB back to RTA need to be configured. Which two commands will the

administrator use to accomplish these tasks on the two routers? (Choose two.)

RTA(config)# ip route 10.16.10.5 255.255.255.252 10.16.10.6



RTB(config)# ip route 10.16.10.6 255.255.255.248 10.16.10.6

RTB(config)# ip route 0.0.0.0 0.0.0.0 S0/0/1


33How do port filtering and access lists help provide network security?


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access is required.

PAT uses unique source port numbers to distinguish between translations.

40

Refer to the exhibit. The graphic shows the output of a command issued on router

RTB. According to the output, what two statements are true of router RTB? (Choose

two.)

The router is connected to a router named Boise.

Router RTB is connected to a Cisco 1841 router.

Router RTB is directly connected to two other routers.

The IP address of the router interface connected to router RTB is 192.168.2.6.

The RTB router is connected to two Cisco devices by Fast Ethernet links.

41

Refer to the exhibit. The network administrator uses the command below to configure

a default route to the ISP network :


A ping issued from the ISP is successful to router RTB. However, ping echo request

packets arrive at a host that is attached to the Fa0/0 interface of RTB, and the replies

do not make it back to the ISP router. What will fix this problem?

The ISP must be configured to forward packets from the 192.168.1.0 network.

The ip route command needs to be edited so that the next hop address is 10.1.1.5.

The ip route command needs to be edited so that the 192.168.1.1 address is the nexthop address.

The ip route command should be removed from the RTB router configuration.

42

A network technician is using a network management station to gather data about the

performance of devices and links within the ISP. Which application layer protocol

makes this possible?

SNMP


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FTP

DHCP

SMTP

43

What are two purposes of DNS? (Choose two.)

to dynamically assign IP addressing information to network hosts

to simplify the administration of host and default gateway addressing on client

computers

to assign TCP port numbers to hosts as part of the data transfer process

to resolve human-readable domain names to numeric IP addresses

to replace the static HOSTS file with a more practical dynamic system

44

A hacker attempts to reach confidential information that is stored on a server inside

the corporate network. A network security solution inspects the entire packet,determines that it is a threat, and blocks the packet from entering the inside network.

Which security measure protected the network?

an IDS

an IPS

a host-based firewall

Anti-X software

45

How many host addresses may be assigned on each subnetwork when using the

130.68.0.0 network address with a subnet mask of 255.255.248.0?

30

256

2046

2048


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4094

4096

46

In an IPv4 environment, what information is used by the router to forward data

packets from one interface of a router to another?

destination network address

source network address

source MAC address

well known port destination address

47

A small tire retailer requires a low-cost WAN connection to its headquarters in order

to manage its inventory and process customer sales in real time. Which WAN

connection type is best suited to its needs?

Sonet

T3

dialup

DSL

leased line

48The command copy tftp running-config has been entered on the router. What will this

command do?

copy the configuration in RAM to a server

copy the configuration file from a server to RAM

copy the configuration file in NVRAM to RAM

copy the configuration file in NVRAM to a server

copy the configuration file from a server to NVRAM


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49

Refer to the exhibit. The network administrator needs to configure the Fa0/0 interfaceof RTB so that hosts from RTA can connect to the server that is attached to RTB.

Which two commands will the administrator use to accomplish this task? (Choose

two.)

RTB# ip address 192.168.102.98 255.255.255.248

RTB(config-if)# ip address 192.168.102.99 255.255.255.252

RTB(config)# ip address 192.168.102.97 255.255.255.252

RTB(config)# no shutdown

RTB(config-if)# no shutdown

RTB(config-if)# ip address 192.168.102.97 255.255.255.252

50

Refer to the exhibit. A NOC technician at an ISP enters the command shown. What

are two reasons to use this command? (Choose two.)

to map the path to 192.168.1.7

to test reachability to 192.168.1.7

to locate connectivity problems along the route to 192.168.1.7

to identify the ISPs that interconnect the NOC with the remote host with the address

192.168.1.7

to measure the time that packets take to reach 192.168.1.7 and return to the

technician's workstation

CCNA 2 Final V4.0 Answers

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