Final Exam Aswer - CCNA 2 Router and Routing Basics
1
What are two possible reasons a router would not load a
valid IOS from flash? (Choose two.)
The configuration register is set to 0x2142.
The first boot system command executed in the startup
configuration file is boot system rom.
The configuration register is set to 0x2100.
The boot field is set to the hexadecimal number 2.
The startup configuration file is missing or corrupt.
2
What are two recommended uses of login banners? (Choose
two.)
to display security warning messages
to welcome any user to the router
to warn people about misusing privileged EXEC mode
to identify circuits and other devices connected to the
router
to announce a scheduled system shutdown
3
Router A and Router B have been correctly configured to use RIP as a
dynamic routing protocol and all intefaces on Router A and Router B are
reporting "interface is up, line protocol is up" status. RIP is
then configured on Router C using the following commands:
If no additional routing is configured on Router A, Router B, and Router C,
what will be the result?
Networks 192.168.12.0/24, 192.168.4.0/24, and
172.16.0.0/16 will be unreachable from Router A.
Router A will have no knowledge of network
192.168.12.0/24, but will have routes to networks 192.168.4.0/24 and
172.16.0.0/16.
All networks shown in the graphic will be reachable by
Router A, Router B, and Router C.
Networks 192.168.4.0/24 and 172.16.0.0/16 will be
unreachable from Router A and Router B.
4
What are the primary functions of a router? (Choose
two.)
determine the best path for packets
prevent collisions on the network LAN
regulate flow control between sender and receiver
provide domain name resolution
forward packets to the appropriate interface
5
What are some reasons to change the configuration
register setting? (Choose two.)
to force the system to ignore the configuration file
stored in NVRAM
to monitor password changes
to change the POST sequence
to force the router to boot the IOS from NVRAM
to force the system into ROM monitor mode
6
A network administrator issues the erase
startup-config command on a configured router with the configuration
register set to 0x2102 and observes the following output:
Erasing the nvram filesystem will remove all files! Continue? [Confirm]
[OK]
Erase of nvram: complete
If the router unexpectedly loses power after this sequence, what will occur
when power is restored?
The router will enter ROM monitor mode upon completion
of the power-on self test (POST).
The router will load the last known valid configuration
file.
The router will enter Rx-boot mode.
The router will prompt the user to enter setup mode or
to continue without entering setup mode.
7
Why are routed protocols important to networking?
(Choose two.)
Routed protocols detect collisions and fragments.
Routers use routed protocols to calculate the best path
to a destination.
Routed protocols transport data across the network.
The fields and formats used within a packet are defined
by routed protocols.
Routed protocols are used to configure the metrics used
by routing protocols.
8
The main router of XYZ company has enough flash and RAM
to store multiple IOS images. An administrator wants to upload a second IOS
image from a TFTP server to the flash of the router. Which method will
accomplish this task?
Paste the IOS filename to the command line of the router
while in global configuration mode. Press enter. Then issue the copy
tftp flash command.
Use the setup utility to load the new image to flash.
Copy the IOS image file from a TFTP server using the
command copyfilenameip addressflash .
Copy the IOS image file from a TFTP server using the
command copy tftp flash. When prompted, provide the IP address or
name of the TFTP server and the IOS image filename.
9
A network administrator has a console connection to the Fremantle router.
Pings to Melville are successful, but pings to Cottesloe and Nedlands fail.
What could be a first step in troubleshooting the problem?
Use an extended ping from Fremantle to each
router in the network.
Use the show interfaces command from a Telnet
session on Melville to check the connection to Cottesloe.
Use the traceroute command to discover exactly
which link in the network is down.
Use the show cdp neighbors detail command from
Fremantle to gather information about all Cisco routers in the network.
10
Refer to the exhibit. The new security policy for the company allows all IP
traffic from the Engineering LAN to the Internet while only web traffic
from the Marketing LAN is allowed to the Internet. Which ACL can be applied
in the outbound direction of Serial 0/1 on the Marketing router to
implement the new security policy?
access-list 197 permit ip 192.0.2.0 0.0.0.255 any access-list 197 permit ip 198.18.112.0 0.0.0.255 any eq www
access-list 165 permit ip 192.0.2.0 0.0.0.255 any access-list 165 permit tcp 198.18.112.0 0.0.0.255 any eq www access-list 165 permit ip any any
access-list 137 permit ip 192.0.2.0 0.0.0.255 any access-list 137 permit tcp 198.18.112.0 0.0.0.255 any eq www
access-list 89 permit 192.0.2.0 0.0.0.255 any access-list 89 permit tcp 198.18.112.0 0.0.0.255 any eq www
11
Hosts from the Limerick LAN are not allowed access to the Shannon LAN but
should be able to access the Internet. Which set of commands will create a
standard ACL that will apply to traffic on the Shannon router interface
Fa0/0 implementing this security?
What are the results of setting the boot field bits in
the configuration register to "0000"? (Choose two.)
The startup-config file will be ignored at bootup.
The router will load the IOS from Flash.
The router will enter ROM monitor mode upon reload.
The router will enter boot ROM mode and have limited
capabilities.
The administrator can enter the b command to
manually boot the IOS.
14
Refer to the exhibit. Router D interface S0 on has gone down. What is the
maximum time that will elapse before Router A learns that network 168.58.14.0
is down?
5 seconds
13 seconds
17 seconds
25 seconds
30 seconds
77 seconds
15
During initial router bootup the following line appears:
"NVRAM invalid, possibly due to write erase."
What are two possible reasons for this result? (Choose two.)
The startup-config file was not saved to RAM before
reboot.
The IOS has been erased.
The router has not been configured.
The startup-config file cannot be located.
The router will not enter initial configuration dialog.
16
The Suffolk router is directly connected to the networks shown in the
graphic and has a default route that points to the Richmond router. All
interfaces are active and properly addressed. However, when the workstation
on network 172.29.5.0/24 sends a packet to destination address
172.29.198.5, it is discarded by the Suffolk router. What can be a reason
for this result?
The ip classless command is not enabled on the
Richmond router.
The route was ignored if the Richmond router did not
include the 172.29.198.0/24 network in its routing updates.
The Richmond router is in a different autonomous system
than the Suffolk router.
The ip subnet-zero command was not configured on
the Suffolk router.
The ip classless command is not enabled on the
Suffolk router.
17
access-list 199 deny tcp 178.15.0.0 0.0.255.255 any
eq 23
access-list 199 permit ip any any
Assuming this ACL is correctly applied to a router interface, which
statements describe traffic on the network? (Choose two.)
All FTP traffic from network 178.15.0.0 will be
permitted.
All Telnet traffic destined for network 178.15.0.0 will
be denied.
Telnet and FTP will be permitted from all hosts on
network 178.15.0.0 to any destination.
Telnet will not be permitted from any hosts on network
178.15.0.0 to any destination.
Telnet will not be permitted to any host on network
178.15.0.0 from any destination.
18
What facts can be determined from the highlighted text shown in the
exhibit? (Choose two.)
A weak encryption was applied to all unencrypted
passwords.
The enable password is now more secure than the enable
secret password.
An MD5 hashing algorithm was used on all encrypted
passwords.
Any configured user EXEC mode or Telnet passwords will
be encrypted in this configuration.
The service password-encryption command was used
to encrypt all passwords on the router including enable secret.
19
What are three features of CDP? (Choose three.)
provides information on directly connected devices that
have CDP enabled
tests Layer 2 connectivity
enabled by default on each interface
provides a layer of security
used for debugging Layer 4 connectivity issues
20
What information can be learned during the initial
router bootup? (Choose two.)
the configuration register value
the number and types of interfaces installed
the router model and the amount of memory that is
available
the amount of memory required to load the IOS and
configuration
the number of interfaces with connected cables
21
What can be concluded from the output shown in the exhibit? (Choose three.)
This is a standard IP access list.
This is an extended IP access list.
The keyword host is implied in the command line access-list
99 deny 10.213.177.76.
The wildcard mask must be configured for this access
list to function properly.
Host 10.213.177.100 will be allowed access to the
Serial0/1 interface.
22
Which statements are true regarding setup mode? (Choose
three.)
Press Ctrl-z to terminate setup mode.
Enter a question mark (?) for help at any point.
Press Spacebar to accept the default settings.
Use setup mode to enter complex protocol features.
Press Enter to accept the default settings.
Press Ctrl-c to abort configuration dialog.
23
Refer to the graphic. Which series of commands will create static routes
that will allow Router A and Router B to deliver packets destined for LAN A
and LAN B, and direct all other traffic to the Internet?
RouterA(config)# ip route 10.90.3.0 255.255.255.0
192.168.3.2
RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1
RouterB(config)# ip route 0.0.0.0 0.0.0.0 s0/0
RouterA(config)# ip route 10.90.3.0 255.255.255.0
192.168.3.2
RouterA(config)# ip route 0.0.0.0 0.0.0.0 192.168.3.2
RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1
RouterA(config)# ip route 0.0.0.0 0.0.0.0 192.168.3.2
RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1
RouterB(config)# ip route 172.20.20.4 255.255.255.252 s0/0
RouterA(config)# ip route 0.0.0.0 0.0.0.0 192.168.3.2
RouterB(config)# ip route 192.168.2.0 255.255.255.0 192.168.3.1
RouterB(config)# ip route 0.0.0.0 0.0.0.0 s0/0
24
Which devices can be used to convert the data from a WAN router at the
customer site into a form acceptable for use by the WAN service provider?
(Choose three.)
Ethernet switch
DTE
modem
hub
DCE device
CSU/DSU
25
What will occur when the following ACL is applied inbound to both
FastEthernet interfaces of Router A in the graphic?
Workstations A and B will be able to Telnet to each
other. Workstation A will be allowed to access Web servers on the Internet,
while Workstation B will be denied Internet Web access.
Workstations A and B will be able to Telnet to each
other. All other traffic will be denied.
The ACL will have no effect because it should be applied
in the outbound direction on the FastEthernet interfaces.
The ACL will deny all traffic because of the implied deny
ip any any statement at the end of the ACL.
26
Based on this partial output of the show ip route
command, which routing protocol is configured on the router?
R 172.16.3.0/24 [120/3] via 172.16.2.2, 00:00:27, Serial0/0
RIP
EIGRP
OSPF
IGP
BGP
27
Which of the following are correct statements verified by the router output
shown in the graphic? (Choose two.)
Layer 3 connectivity exists between BigCity and the
devices in the Device ID column.
Layer 2 connectivity exists between BigCity and the
devices in the Device ID column.
All devices shown in the Device ID column use the TCP/IP
protocol suite.
All devices shown in the Device ID column can be pinged
from BigCity.
All devices listed in the Device ID column are directly
connected to BigCity.
28
A network administrator must configure a FastEthernet
interface with an IP address. The configuration must also identify the
remote site to which the interface is connected. Which set of commands will
meet these requirements?
StPetersburg(config)# banner San Jose T1
StPetersburg(config)# interface fa0/0
StPetersburg(config-if)# ip address 172.26.155.5 255.255.255.252
StPetersburg(config)# interface fa0/0
StPetersburg(config-if)# ip address 172.26.155.5 netmask 255.255.255.252
StPetersburg(config-if)# description San Jose T1
StPetersburg(config)# interface fa0/0
StPetersburg(config-if)# ip address 172.26.155.5 255.255.255.252
StPetersburg(config-if)# banner remote site San Jose T1
StPetersburg(config)# interface fa0/0
StPetersburg(config-if)# ip address 172.26.155.5 255.255.255.252
StPetersburg(config-if)# description San Jose T1
29
What are the features of a serial interface on a router?
(Choose two.)
enabled by default
assigned a unique MAC address
must be configured as a DCE in lab and production
environments
must be configured with the default clock rate of 56000
may be administratively enabled by using the no
shutdown command
must be configured with a valid IP address and subnet
mask in order to forward packets
30
Assuming the following ACL
is correctly applied to a router interface, what can be concluded about
this set of commands? (Choose two.)
Router(config)# access-list 165 deny tcp 192.28.115.0 0.0.0.255
172.20.0.0 0.0.255.255 eq 23
Router(config)# access-list 165 permit ip any any
This is a standard IP access list that denies network
192.28.115.0 Telnet access to the 172.20.0.0 network.
All Telnet traffic destined for 172.20.0.0 from any
network will be denied access.
Network 192.28.115.0 is denied Telnet access to the
172.20.0.0 network.
Network 172.20.0.0 is denied Telnet access to the
192.28.115.0 network.
All FTP and HTTP traffic destined for 172.20.0.0 will be
permitted access.
31
Which two steps describe how to create a functional
physical connection between a router console and a terminal? (Choose two.)
Use a crossover cable to connect the terminal serial
port to the router console port.
Use a rollover cable to connect the terminal NIC to the
router console port.
Use an RJ-45 to DB-9 adapter on the terminal serial port
to connect to the cable going to the router console.
Use a transceiver to connect a straight-through cable to
the router console port.
Use a straight-through cable to connect the router
console port to the terminal NIC.
Use a rollover cable to connect from a terminal serial
port to the router console port.
32
What critical information about the status of the router
can be found in the outputs of both the show interfaces and show
protocols commands? (Choose two.)
the Layer 3 address of each configured interface
the routing protocol configured to forward updates out
of each interface
the operational status of each interface
traffic statistics for each interface
whether the interface is configured as a DTE or DCE
33
The following access list has been created to prevent traffic from the
192.0.2.63 host on the Sales LAN from accessing servers and hosts on the
Payroll LAN.
access-list 26 deny host 192.0.2.63
access-list 26 permit any
Refer to the exhibit. Which group of commands will properly place the
access list so that only the host on the Sales LAN is denied access to the
172.29.7.0 network but all other traffic is permitted?
Payroll(config)# interface fa0/0
Payroll(config-if)# ip access-group 26 out
Payroll(config)# interface fa0/1
Payroll(config-if)# ip access-group 26 out
Sales(config)# interface fa0/1
Sales(config-if)# ip access-group 26 in
Sales(config)# interface fa0/0
Sales(config-if)# ip access-group 26 out
34
Refer to the exhibit. Assuming default metrics are used and the network is
fully converged, which path will RIP use to send a packet from Router A to
Router F?
A, D, E, F
A, B, D, E, F
A, C, D, E, G, F
A, B, D, E, G, F
35
Refer to the graphic. Communication is needed between the LAN connected to
the fa0/0 interface of the Kansas router and the fa0/0 interface of the
Maine router. All hosts on those LANs also need connectivity to the
Internet. Which commands will allow this communication? (Choose three).
Kansas(config)# ip route 192.168.6.0 255.255.255.0
172.18.64.2
Kansas(config)# ip route 192.168.6.0 255.255.255.0
s0/1
Kansas(config)# ip route 0.0.0.0 0.0.0.0 s0/1
Maine(config)# ip route 192.168.6.0 255.255.255.0
172.18.64.1
Maine(config)# ip route 0.0.0.0 0.0.0.0 s0/1
Maine(config)# ip route 172.16.32.0 255.255.255.0
172.18.64.2
36
Why are interface descriptions used in router
configurations? (Choose three).
to enable support personnel to easily identify networks
and customers that may be affected by a possible interface issue
to provide comments on the interface without affecting
the router functionality
to display access warning messages before users enter
the interface configuration mode
to eliminate the need to use IP addresses when using the ping and telnet commands
to identify the purpose and location of the interface
37
A network administrator has enabled RIP on routers B and C in the network
diagram. Which of the following commands will prevent RIP updates from
being sent to Router A?
What could a Cisco support technician learn from the IOS
filename c2600-d-mz.121-3? (Choose three.)
the format of the file
the RAM memory requirements of the file
the version number of the file
the size of the file
the device platform of the file
39
While planning an IOS upgrade, the administrator issues the show version command. Based on the output in the graphic, what is the current IOS boot
location?
RAM
NVRAM
Flash
ROM
40
A new technician must add boot system commands to one of
the department routers. Which available commands will the router return as
output when the command shown below is entered? (Choose two.)
Router(config)# boot system ?
RAM
NVRAM
IOS
IP Address
TFTP
FLASH
41
From the running-config, the following configuration
entries are displayed:
Router(config)# line vty 0 2
Router(config-line)# password g8k33pr
Router(config-line)# login
What can be interpreted from the exhibited configuration? (Choose two.)
Three Telnet lines are available for remote access.
Two Telnet lines are available for remote access.
Future configuration of the remaining Telnet lines will
require the password to be set to g8k33pr.
To login to the remote device, g8k33pr will be used as
the Telnet and secret password.
Remote access to this local router will require a Telnet
password of g8k33pr.
42
Which router component stores the information that is
displayed by the show running-config command?
flash
NVRAM
RAM
ROM
43
What are two characteristics of the support for Telnet
within Cisco IOS software? (Choose two.)
Up to five separate Telnet lines are supported by
default in standard edition IOS files.
For security purposes, Telnet sessions are required to
be established from the privileged mode.
A router can host simultaneous Telnet sessions.
Once established, a Telnet session can remain
operational regardless of network status.
Telnet tests wireless connectivity and does not require
a physical connection between devices to gain remote access.
44
Which router components and operations are correctly
described? (Choose two.)
RAM - stores the ARP cache
NVRAM - store the operating system
ROM - stores the backup IOS
POST - verifies the validity of the running-config
Flash - executes diagnostics at bootup
DRAM - loads the bootstrap
45
Given the output shown in the exhibit, in what order and location will the
router search for the IOS if no boot system commands are found in
the startup-config file?
ROM, Flash, TFTP server
Flash, NVRAM, RAM
ROM, TFTP server, Flash
RAM, Flash, NVRAM
Flash, TFTP server, ROM
46
What can a network administrator do to recover from a
lost router password?
perform a reload or reset
telnet from another router and issue the show
running-config command to view the password
boot the router to ROM monitor mode and configure the
router to ignore NVRAM when it initializes
boot the router to bootROM mode and enter the b command to load the IOS manually
47
Neither router in the exhibit has a host table or DNS available. The
interfaces and passwords have been correctly configured. Which of the following
commands will initiate a Telnet session? (Choose two.)
Tottenham# telnet Oxford
Tottenham> telnet 198.18.139.1
Oxford# connect 198.18.139.0
Oxford> connect Tottenham
Oxford# telnet Tottenham
Oxford# 198.18.139.2
48
If a PC does not have network connectivity to a router,
which router port can be used to establish communication?
