26.
What does a VLAN do?
A. Acts as the fastest port to all servers.
B. Provides multiple collision domains on one switch port.
C. Breaks up broadcast domains in a layer 2 switch internetwork.
D. Provides multiple broadcast domains within a single collision domain.
Answer & Explanation
Answer: Option C
Explanation:
VLANs break up broadcast domains at layer 2.
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27.
What is the main reason the OSI model was created?
A. To create a layered model larger than the DoD model.
B. So application developers can change only one layer’s protocols at a time.
C. So different networks could communicate.
D. So Cisco could use the model.
Answer & Explanation
Answer: Option C
Explanation:
The primary reason the OSI model was created was so that different networks could inter-operate.
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28.
How many collision domains are created when you segment a network with a 12-port switch?
A. 1 B. 2
C. 5 D. 12
Answer & Explanation
Answer: Option D
Explanation:
Layer 2 switching creates individual collision domains.
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29.
What command will display the line, protocol, DLCI, and LMI information of an interface?
A. sh pvc
B. show interface
C. show frame-relay pvc
D. show run
Answer & Explanation
Answer: Option B
Explanation:
The show interface command shows the line, protocol, DLCI, and LMI information of an interface.
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30.
Which protocol does Ping use?
A. TCP B. ARP
C. ICMP D. BootP
Answer & Explanation
Answer: Option C
Explanation:
ICMP is the protocol at the Network layer that is used to send echo requests and replies.