Review Questions - Chapter 5 VLSMs, Summarization, and Troubleshooting TCP/IP

Question 1 of 20

1

On a VLSM network, which mask should you use on point-to-point WAN links in order to reduce the waste of IP addresses?

Select one of the following:

/27
/28
/29
/30
/31

Explanation

Question 2 of 20

1

In the network shown in the diagram, how many computers could be in Network B?

Select one of the following:

6
12
14
30

Explanation

Question 3 of 20

1

In the following diagram, in order to have IP addressing that’s as efficient as possible, which network should use a /29 mask?

Select one of the following:

A
B
C
D

Explanation

Question 4 of 20

1

To use VLSM, what capability must the routing protocols in use possess?

Select one of the following:

Support for multicast
Multiprotocol support
Transmission of subnet mask information
Support for unequal load balancing

Explanation

Question 5 of 20

1

What summary address would cover all the networks shown and advertise a single, efficient route to Router B that won’t advertise more networks than needed?

Select one of the following:

172.16.0.0/24
172.16.1.0/24
172.16.0.0/25
172.16.0.0/20
172.16.16.0/28
172.16.0.0/27

Explanation

Question 6 of 20

1

In the following diagram, what is the most likely reason the station cannot ping outside of its network?

Select one of the following:

The IP address is incorrect on interface E0 of the router.
The default gateway address is incorrect on the station.
The IP address on the station is incorrect.
The router is malfunctioning.

Explanation

Question 7 of 20

1

If a host is configured with an incorrect default gateway and all the other computers and router are known to be configured correctly, which of the following statements is TRUE?

Select one of the following:

Host A cannot communicate with the router.
Host A can communicate with other hosts in the same subnet.
Host A can communicate with hosts in other subnets.
Host A can communicate with no other systems.

Explanation

Question 8 of 20

1

Which of the following troubleshooting steps, if completed successfully, also confirms that
the other steps will succeed as well?

Select one of the following:

Ping a remote computer.
Ping the loopback address.
Ping the NIC.
Ping the default gateway.

Explanation

Question 9 of 20

1

When a ping to the local host IP address fails, what can you assume?

Select one of the following:

The IP address of the local host is incorrect.
The IP address of the remote host is incorrect.
The NIC is not functional
The IP stack has failed to initialize.

Explanation

Question 10 of 20

1

When a ping to the local host IP address succeeds but a ping to the default gateway IP address fails, what can you rule out? (Choose all that apply.)

Select one of the following:

The IP address of the local host is incorrect.
The IP address of the gateway is incorrect.
The NIC is not functional
The IP stack has failed to initialize

Explanation

Question 11 of 20

1

Which of the networks in the diagram could use a /29 mask?

Select one of the following:

Corporate
LA
SF
NY
None

Explanation

Question 12 of 20

1

What network service is the most likely problem if you can ping a computer by IP address but not by name?

Select one of the following:

DNS
DHCP
ARP
ICMP

Explanation

Question 13 of 20

1

When you issue the ping command, what protocol are you using?

Select one of the following:

DNS
DHCP
ARP
ICMP

Explanation

Question 14 of 20

1

Which of the following commands displays the networks traversed on a path to a network destination?

Select one of the following:

ping
traceroute
pingroute
pathroute

Explanation

Question 15 of 20

1

What command generated the output shown below?

Select one of the following:

traceroute
show ip route
ping
pathping

Explanation

Question 16 of 20

1

In the work area, match the command to its function on the right.

Select one of the following:

__________________________________________________________________________________
| traceroute | Shows you the PC network configuration |
__________________________________________________________________________________
| arp -a | Displays IP-to-MAC-address mappings on a Windows PC |
__________________________________________________________________________________
| show ip arp | Displays the ARP table on a Cisco router |
__________________________________________________________________________________
| ipconfig /all | Displays the list of routers on a path to a network destination | _________________________________________________________________________________
__________________________________________________________________________________
| traceroute | Displays the list of routers on a path to a network destination |
__________________________________________________________________________________
| arp -a | Shows you the PC network configuration |
__________________________________________________________________________________
| show ip arp | Displays the ARP table on a Cisco router |
__________________________________________________________________________________
| ipconfig /all | Displays IP-to-MAC-address mappings on a Windows PC |
__________________________________________________________________________________
__________________________________________________________________________________
| traceroute | Displays the list of routers on a path to a network destination |
__________________________________________________________________________________
| arp -a | Displays IP-to-MAC-address mappings on a Windows PC |
__________________________________________________________________________________
| show ip arp | Displays the ARP table on a Cisco router |
__________________________________________________________________________________
| ipconfig /all | Shows you the PC network configuration |
__________________________________________________________________________________
__________________________________________________________________________________
| traceroute | Displays the list of routers on a path to a network destination |
__________________________________________________________________________________
| arp -a | Displays IP-to-MAC-address mappings on a Windows PC |
__________________________________________________________________________________
| show ip arp | Shows you the PC network configuration |
__________________________________________________________________________________
| ipconfig /all | Displays the ARP table on a Cisco router |
__________________________________________________________________________________

Explanation

Question 17 of 20

1

17. Which of the following network addresses correctly summarizes the three networks shown below efficiently?
10.0.0.0/16
10.1.0.0/16
10.2.0.0/16

Select one of the following:

10.0.0.0/15
10.1.0.0/8
10.0.0.0/14
10.0.0.8/16

Explanation

Question 18 of 20

1

What command displays the ARP table on a Cisco router?

Select one of the following:

show ip arp
traceroute
arp -a
tracert

Explanation

Question 19 of 20

1

What switch must be added to the ipconfig command on a PC to verify DNS configuration?

Select one of the following:

/dns
-dns
/all
showall

Explanation

Question 20 of 20

1

Which of the following is the best summarization of the following networks: 192.168.128.0through 192.168.159.0?

Select one of the following:

192.168.0.0/24
192.168.128.0/16
192.168.128.0/19
192.168.128.0/20

	Created by Kessi Silva almost 7 years ago

Network Fundamentals 1.7 Apply troubleshooting methodologies to resolve problems 1.7.a Perform fault isolation and document 1.7.b Resolve or escalate 1.7.c Verify and monitor resolution 1.8 Configure, verify, and troubleshoot IPv4 addressing and subnetting

Review Questions - Chapter 5 VLSMs, Summarization, and Troubleshooting TCP/IP

Review Questions - Chapter 5 VLSMs, Summarization, and Troubleshooting TCP/IP

Question 1 of 20

On a VLSM network, which mask should you use on point-to-point WAN links in order to reduce the waste of IP addresses?

Select one of the following:

Explanation

Question 2 of 20

In the network shown in the diagram, how many computers could be in Network B?

Select one of the following:

Explanation

Question 3 of 20

In the following diagram, in order to have IP addressing that’s as efficient as possible, which network should use a /29 mask?

Select one of the following:

Explanation

Question 4 of 20

To use VLSM, what capability must the routing protocols in use possess?

Select one of the following:

Explanation

Question 5 of 20

What summary address would cover all the networks shown and advertise a single, efficient route to Router B that won’t advertise more networks than needed?

Select one of the following:

Explanation

Question 6 of 20

In the following diagram, what is the most likely reason the station cannot ping outside of its network?

Select one of the following:

Explanation

Question 7 of 20

If a host is configured with an incorrect default gateway and all the other computers and router are known to be configured correctly, which of the following statements is TRUE?

Select one of the following:

Explanation

Question 8 of 20

Which of the following troubleshooting steps, if completed successfully, also confirms that the other steps will succeed as well?

Select one of the following:

Explanation

Question 9 of 20

When a ping to the local host IP address fails, what can you assume?

Select one of the following:

Explanation

Question 10 of 20

When a ping to the local host IP address succeeds but a ping to the default gateway IP address fails, what can you rule out? (Choose all that apply.)

Select one of the following:

Explanation

Question 11 of 20

Which of the networks in the diagram could use a /29 mask?

Select one of the following:

Explanation

Question 12 of 20

What network service is the most likely problem if you can ping a computer by IP address but not by name?

Select one of the following:

Explanation

Question 13 of 20

When you issue the ping command, what protocol are you using?

Select one of the following:

Explanation

Question 14 of 20

Which of the following commands displays the networks traversed on a path to a network destination?

Select one of the following:

Explanation

Question 15 of 20

What command generated the output shown below?

Select one of the following:

Explanation

Question 16 of 20

In the work area, match the command to its function on the right.

Select one of the following:

Explanation

Question 17 of 20

17. Which of the following network addresses correctly summarizes the three networks shown below efficiently? 10.0.0.0/16 10.1.0.0/16 10.2.0.0/16

Select one of the following:

Explanation

Question 18 of 20

What command displays the ARP table on a Cisco router?

Select one of the following:

Explanation

Question 19 of 20

What switch must be added to the ipconfig command on a PC to verify DNS configuration?

Select one of the following:

Explanation

Question 20 of 20

Which of the following troubleshooting steps, if completed successfully, also confirms that
the other steps will succeed as well?

17. Which of the following network addresses correctly summarizes the three networks shown below efficiently?
10.0.0.0/16
10.1.0.0/16
10.2.0.0/16