Networking Basics

21. In a network with dozens of switches, how many root bridges would you have?

A. 1
B. 2
C. 5
D. 12

Correct Answer: A. 1

22. What PPP protocol provides dynamic addressing, authentication, and multilink?

A. NCP
B. HDLC
C. LCP
D. X.25

Correct Answer: C. LCP

23. What is a stub network?

A. A network with more than one exit point.
B. A network with more than one exit and entry point.
C. A network with only one entry and no exit point.
D. A network that has only one entry and exit point.

Correct Answer: D. A network that has only one entry and exit point.

24. If your router is facilitating a CSU/DSU, which of the following commands do you need to use to provide the router with a 64000bps serial link?

A. RouterA(config)#bandwidth 64
B. RouterA(config-if)#bandwidth 64000
C. RouterA(config-if)#clock rate 64
D. RouterA(config-if)#clock rate 64000

Correct Answer: D. RouterA(config-if)#clock rate 64000

25. Which one of the following is true regarding VLANs?

A. Two VLANs are configured by default on all Cisco switches.
B. VLANs only work if you have a complete Cisco switched internetwork. No off-brand switches are allowed.
C. You should not have more than 10 switches in the same VTP domain.
D. VTP is used to send VLAN information to switches in a configured VTP domain.

Correct Answer: D. VTP is used to send VLAN information to switches in a configured VTP domain.

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