单项选择题How would the number 231 be expressed as a binary number?()

A. 11011011
B. 11110011
C. 11100111
D. 11111001
E. 11010011


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1.单项选择题Which one of the binary number ranges shown below corresponds to the value of the first octet in Class B address range?()

A. 10000000-11101111
B. 11000000-11101111
C. 10000000-10111111
D. 10000000-11111111
E. 11000000-10111111

4.单项选择题If a host on a network has the address 172.16.45.14/30, what is the address of the subnetwork to which this host belongs?()

A. 172.16.45.0
B. 172.16.45.4
C. 172.16.45.8
D. 172.16.45.12
E. 172.16.45.18

5.多项选择题CDP is running between two TestKing devices. What information is supplied by CDP?()

A. Device identifiers
B. Capabilities list
C. Platform
D. Route identifier
E. Neighbor traffic data

6.多项选择题Which Layer 1 devices can be used to enlarge the area covered by a single LAN segment?()

A. Switch
B. Router
C. NIC
D. hub
E. Repeater
F. RJ-45 transceiver

7.多项选择题With regard to bridges and switches, which of the following statements are true?()

A. Switches are primarily software based while bridges are hardware based.
B. Both bridges and switches forward Layer 2 broadcasts.
C. Bridges are frequently faster than switches.
D. Switches typically have a higher number of ports than bridges.
E. Bridges define broadcast domain while switches define collision domains.
F. Both bridges and switches make forwarding decisions based on Layer 2 addresses.

8.多项选择题Which of the following are benefits of segmenting a network with a router?()

A. Broadcasts are not forwarded across the router.
B. All broadcasts are completely eliminated.
C. Adding a router to the network decreases latency.
D. Filtering can occur based on Layer 3 information.
E. Routers are more efficient than switches and will process the data more quickly.
F. None of the above.

9.单项选择题The Testking corporate LAN consists of one large flat network. You decide to segment this LAN into two separate networks with a router. What will be the affect of this change?()

A. The number of broadcast domains will be decreased.
B. It will make the broadcasting of traffic between domains more efficient between segments.
C. It will increase the number of collisions.
D. It will prevent segment 1's broadcasts from getting to segment 2.
E. It will connect segment 1's broadcasts to segment 2.

10.多项选择题Routers perform which of the following functions?()

A. Packet switching
B. Collision prevention on a LAN segment.
C. Packet filtering
D. Broadcast domain enlargement
E. Broadcast forwarding
F. Internetwork communication

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