What can be concluded about the network shown in the graphic based on the
output given?
Network 192.168.5.0 is missing from the routing table on
Router A.
There is a problem with the connection between Router B
and Router C.
Router C is not running CDP.
Some of the routers are non-Cisco devices.
Router B was not able to return ICMP TEMs to Router A.
2
Which of the following would be the default
administrative distance of a static IP route that references the IP address
of the next hop?
0
1
5
20
3
After issuing the show interfaces command, a
technician notices the line "Serial1 is down, line protocol is
down" in the output. Which of the following are possible reasons for this
message output? (Choose three.)
There is a mismatch in the encapsulation type on both
ends of the link.
A Layer 1 issue exists.
An interface problem exists.
The clockrate was not set during configuration.
There is no usable media for the protocol.
Keepalive messages are not being sent.
4
Which three correctly pair a routing metric with its
description? (Choose three.)
hop count - the number of routers traversed to reach a
destination
bandwidth - the amount of time it takes a packet to
travel a link
load - the amount of activity on a link
delay - the link speed
reliability - the error rate on a link
5
When issuing the show interfaces serial1 command, a network
administrator receives the output shown in the graphic. What are the
possible causes of an increase in the number of input errors? (Choose
three.)
There could be Layer 3 addressing problems.
There could be a problem with faulty telephone
equipment.
The router hardware could be defective.
There is an incorrectly configured encapsulation on the
interface.
There could be a problem with the cabling.
6
Which ICMP message type notifies source hosts that a
receiving host or network is not available?
time exceeded
redirect
destination unreachable
source quench
parameter problem
echo reply
7
The show interfaces command provides line and
protocol status information. Which of the following conditions would never
occur in the output of this command?
serial1 is up, line protocol is up
serial1 is up, line protocol is down
serial1 is down, line protocol is down
serial1 is down, line protocol is up
serial1 is administratively down, line protocol is down
8
The network administrator shown in the exhibit can ping the E0 interface of
the HAR router, but the telnet intranet.xyz.com command issued from
the administrator's workstation fails to open a session with the
intranet.xyz.com server. What are two possible causes of this problem?
(Choose two.)
upper-layer application problems
domain name system problems
IP addressing problems on the HAR router
clock rate problems on the HAR router serial interface
ICMP connectivity problems
9
The network administrator is using a PC to access a
router via the router console port. Both the PC and the router are powered
on and a cable has been connected between them. However, a session cannot
be established. Which steps might fix this problem? (Choose two.)
Verify the cable is properly connected at each end.
Reseat the network card in the PC.
Verify the cable is the correct type.
Verify that a password has been set on the console line.
Check the transceiver for link lights.
Reseat the console card on the router.
10
Which command will display routing table information
about all known networks and subnetworks?
Router# show ip interfaces
Router# show ip connections
Router# show ip route
Router# show ip networks
11
A network technician has discovered that a router in the
network can no longer be reached. The technician attempts to verify Layer 1
functionality, but is unable to physically inspect the cables. Which
command can be used to determine the type of cable connected to the router?
Router# show interfaces
Router# show controllers serial
Router# show ip route
Router# show ip protocol
Router# show version
Router# show running-config
12
During the lookup process when forwarding a packet, a
router checks its routing table for the best path to the destination. If a
route has an administrative distance of 0, what does this indicate to the
router?
The packet should be discarded.
The destination is unreachable.
The destination is a directly connected network.
The source of the update for that route is unreliable.
13
Which command will verify the functionality of all seven
layers of the OSI model on a network host?
ping
debug
telnet
traceroute
14
After issuing the show interfaces serial1 command, an administrator
notices an increasing number of carrier transitions. What are the possible causes
for this increase? (Choose two.)
There is an incorrect encapsulation configured on the
interface.
There could be an interruption in the line by the
service provider.
There is a faulty switch or CSU/DSU.
There is noise on the serial line.
15
Consider the RIP network shown in the diagram. Which entries would be
listed in the routing table of Router A?
R 192.168.5.2[120/1] via 192.168.15.0, 00:00:09, Serial0
R 192.168.15.0[120/1] via 192.168.5.2, 00:00:13, Serial1
R 192.168.15.0[120/1] via 192.168.5.1, 00:00:13, Serial0
R 192.168.5.1 [120/1] via 192.168.5.2 00:00:29, Serial1
R 192.168.15.0 [120/1] via 192.168.5.2, 00:00:29, Serial1
R 192.168.5.1 [120/1] via 192.168.5.2 00:00:18, Serial0
R 192.168.15.2 [120/1] via 192.168.5.2, 00:00:18, Serial0
16
Which items would be displayed when the show ip
protocols command is executed? (Choose three.)
sources of routing updates
networks being advertised
routing protocol up or down
configured routed protocols
Layer 2 status of the interface
update timer values
17
Which two are true regarding the debug commands? (Choose
two.)
Debug commands may be issued from the user EXEC prompt.
The command undebug all will turn off all debug
operations.
By default, the router sends the debug output and
messages to the telnet session.
The high processor overhead incurred using debug may
disrupt normal router operation.
The debug all command provides a summary view of
router activity and can be used frequently for troubleshooting.
The show debugging command will display current
events such as traffic on an interface and error messages generated by
nodes on the network.
18
A network administrator suspects that a network is not
being included in the routing updates. Which command will provide
information on when the next update is due and which networks are
advertised in the update?
Router# show interfaces
Router# show controllers serial
Router# show ip protocols
Router# show ip route
Router# show running-config
19
Which of the following is a problem at the physical
layer of the OSI model?
incorrect file formatting
incorrect encapsulation on a serial interface
incorrect routing protocol
incorrect cable type
20
When the show cdp neighbors command is issued from Router C, which
devices will be displayed in the output?
D, SWH-2
A, B, D
SWH-1, SWH-2
B, D
SWH-1, A, B
A, B, D, SWH-1, SWH-2
21
Which of the following are advantages of using a static
route? (Choose three.)
secure operation
highly adaptable
low maintenance configuration
low processor overhead
precise control of path selection
22
Which of the following commands can be used to
statically configure default routes? (Choose two.)
ip static-route
ip route
ip network-route
ip default-network
ip default-static
23
Why does a router build a routing table? (Choose two.)
to list available routes for forwarding data
to map local Layer 2 addresses to the remote Layer 3
destination address
to dynamically send periodic updates regarding the
router's status
to prevent routing loops when redundant links are added
to the network
to select the best path to a destination
24
Which of the following lines from the show interfaces output would indicate a Layer 2 problem?
Serial1 is up, line protocol is up.
Serial1 is up, line protocol is down.
Serial1 is down, line protocol is down.
Serial1 is administratively down, line protocol is down.
