Test CCNA32

32. In the implementation of VLSM techniques on a network using a single Class C IP address, which subnet mask is the most efficient for point-to-point serial links?

A. 255.255.255.0
B. 255.255.255.240
C. 255.255.255.248
D. 255.255.255.252
E. 255.255.255.254
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Correct D
Explaination:
The subnet mask /30 is usually used for point-to-point serial links.

Test CCNA 31

31. Refer to the exhibit. Switch-1 needs to send data to a host with a MAC address of 00b0.d056.efa4. What will Switch-1 do with this data?

A. Switch-1 will drop the data because it does not have an entry for that MAC address.
B. Switch-1 will flood the data out all of its ports except the port from which the data originated.
C. Switch-1 will send an ARP request out all its ports except the port from which the data originated.
D. Switch-1 will forward the data to its defult gateway.
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Correct B
Explaination:
This question tests the operating principles of the layer 2 switch. Check the MAC address table of Switch1 and find that the MAC address of the host does not exist in the table. Switch1 will flood the data out all of its port except the port from which the data originated to determine which port the host is located in.

Test CCNA 30

30. Refer to the exhibit. Which switch provides the spanning-tree designated port role for the network segment that services the printers?

A. Switch1
B. Switch2
C. Switch3
D. Switch4
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Correct C
Explaination:
Printers are connected by hubs. Decide the switch that provides the spanning-tree designated port role between Switch3 and Switch4. They have the same priority 32768. Compare their MAC addresses. Switch3 with a smaller MAC address will provide a designated port for printers.

Test CCNA 29

29. Refer to the exhibit. The partial frame shown in the exhibit displays select header information as it arrives at the destination host. Which graphic represents the correct header information in the responding frame returned to the remote host?

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Correct
D

Test CCNA 28

28. Two routers named Atlanta and Brevard are connected by their serial interfaces as shown in the exhibit, but there is no data connectivity between them. The Atlanta router is known to have a correct configuration. Given the partial configurations shown in the exhibit, what is the problem on the Brevard router that is causing the lack of connectivity?

A. A loopback is not set.
B. The IP address is incorrect.
C. The subnet mask is incorrect.
D. The serial line encapsulations are incompatible.
E. The maximum transmission unit (MTU) size is too large.
F. The bandwidth setting is incompatible with the connected interface.

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Correct B
Explaination:
The IP address of the S0 interface of Atlanta is 192.168.10.0/24, and the IP address of the S1 interface of Breavard is 192.168.11.0/24 Change the IP address of the S1 interface to 192.168.10.0/24, the same as that of the S0 interface.

Test CCNA 27

27. Refer to the exhibit. The networks connected to router R2 have been summarized as a 192.168.176.0/21 route and sent to R1. Which two packet destination addresses will R1 forward to R2? (Choose two.)

A. 192.168.194.160
B. 192.168.183.41
C. 192.168.159.2
D. 192.168.183.255
E. 192.168.179.4
F. 192.168.184.45

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Correct B, E
Explaination:
From the IP address 192.168.176.0/21, we can know that the range of the IP address of the network is 192.168.176.1 - 192.168.183.254

Test CCNA 26

26. Refer to the output from the show running-config command in the exhibit. What should the administrator do to allow the workstation connected to the FastEthenet 0/0 interface to obtain an IP address?

A. Apply access-group 14 to interface FastEthernet 0/0.
B. Add access-list 14 permit any to the access list configuration.
C. Configure IP address of the FastEthernet 0/0 interface to 10.90.201.1.
D. Add an interface description to the FastEthernet 0/0 interface configuration.

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Correct C
Explaination:
The F0/0 interface of the router is the gateway of the internal network; the administrator must configure an IP address for the interface.