單項(xiàng)選擇題The MAC address for your PC NIC is: C9-3F-32-B4-DC-19. What is the address of the OUI portion of this NIC card, expressed as a binary number?（）

A.11001100-00111111-00011000
B.11000110-11000000-00011111
C.11001110-00011111-01100000
D.11001001-00111111-00110010
E.11001100-01111000-00011000
F.11111000-01100111-00011001


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1.單項(xiàng)選擇題How would the number 172 be expressed in binary form?（）

A.10010010
B.10011001
C.10101100
D.10101110

2.單項(xiàng)選擇題How would the number 231 be expressed as a binary number?（）

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

3.單項(xiàng)選擇題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

5.多項(xiàng)選擇題You have the binary number 10011101. Convert it to its decimal and hexadecimal equivalents.（）

A. 158
B. 0x9D
C. 156
D. 157
E. 0x19
F. 0x9F

6.單項(xiàng)選擇題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

7.多項(xiàng)選擇題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

8.多項(xiàng)選擇題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

9.多項(xiàng)選擇題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.

10.多項(xiàng)選擇題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.