21.
In a network with dozens of switches, how many root bridges would you have?
A. 1
B. 2
C. 5
D. 12
Answer: Option A
Explanation:
You should have only one root bridge per network.
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22.
What PPP protocol provides dynamic addressing, authentication, and multilink?
A. NCP
B. HDLC
C. LCP
D. X.25
Answer: Option C
Explanation:
Link Control Protocol in the PPP stack provides dynamic addressing, authentication, and multilink.
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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.
Answer: Option D
Explanation:
Stub networks have only one connection to an internetwork. Only default routes can be set on a stub network or network loops may occur.
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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
Answer: Option D
Explanation:
The clock rate command is two words, and the speed of the line is in bps.
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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.
Answer: Option D
Explanation:
Switches do not propagate VLAN information by default; you must configure the VTP domain. VLAN Trunking Protocol (VTP) is used to propagate VLAN information across a trunk link