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Computer Network

21.

Given an infinite amount of buffer space. In the text it was stated that a satellite with two uplink and one downlink slotted ALOHA channels can achieve a downlink utilization of

Answer: C

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22.

An OR gate output is HIGH only if all the inputs are HIGH.

Answer: B

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23.

In which communication, poll/select method used to determine control of the line ?

Answer: D

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24.

Poll/select line discipline requires what to identify the packet recipient ?

Answer: C

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25.

Which of the following is possible in a token passing bus network ?

Answer: A

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26.

If a signal passing through a gate is inhibited by sending a LOW into one of the inputs, and the output is HIGH, the gate is a(n):

Answer: B

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27.

A logic probe is placed on the output of a gate and the display indicator is dim. A pulser is used on each of the input terminals, but the output indication does not change. What is wrong?

Answer: B

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28.

The NOR logic gate is the same as the operation of the ________ gate with an inverter connected to the output.

Answer: A

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29.

In a Boolean equation the use of the + symbol represents the OR function.

Answer: A

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30.

An AND gate output is LOW if all the inputs are HIGH.

Answer: B

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