單項(xiàng)選擇題The subnet mask on the serial interface of a router is expressed in binary as 11111000 for the last octet. How do you express the binary number 11111000 in decimal?()

A. 210
B. 224
C. 240
D. 248
E. 252


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1.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

2.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

3.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

4.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

5.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.

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