单项选择题

What represents the binary equivalence of 96?（）

A. 11010100
B. 01100000
C. 11010000
D. 11101010
E. 11000000

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单项选择题

What represents the binary equivalence of 148?（）

A. 10110100
B. 11010010
C. 10011100
D. 10010100

多项选择题

Two devices on an Ethernet segment sent frames at the same time causing a collision. Which two statements are true?（）

A. Both devices stop transmiting, wait a random period of time, verify the wire is idle, and re-transmit
B. The device with the lowest MAC address is permitted to retrannsmit first
C. The device with the lowest MAC address sends a jam signal to notify all other devices of the collision
D. Both devices send a jam signal to notify all other devices of the collision

单项选择题

You have been asked to use a 23-bit network mask to segment the network block 209.18.12.0, How many usable host address will there e per subnet?（）

A. 510
B. 1022
C. 2046
D. 8190