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.
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.
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
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
30. Which protocol does Ping use?
A. TCP
B. ARP
C. ICMP
D. BootP
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