Signals and Switches - General Questions (5)

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Signals and Switches - General Questions

33.

Determine if diodes D₁ and D₂ in the given figure are forward or reverse biased.

mcq2_1020_1

A.	D1 forward and D2 reverse
B.	D2 forward and D1 reverse
C.	D1 and D2 reverse
D.	D1 and D2 forward

Answer: Option A

Explanation:

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34.

Why is parallel data transmission preferred over serial data transmission for most applications?

A.	It is much slower.
B.	It is cheaper.
C.	More people use it.
D.	It is much faster.

Answer: Option D

Explanation:

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35.

Internally, a computer's binary data are almost always transmitted on parallel channels, commonly referred to as the:

A.	parallel bus
B.	serial bus
C.	data bus
D.	memory bus

Answer: Option C

Explanation:

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36.

The hexadecimal number 4B₁₆ is transmitted as an 8-bit word in parallel. What is the time required for this transmission if the clock frequency is 2.25 MHz?

A.	444 ns
B.	444
C.	3.55
D.	3.55 ms

Answer: Option A

Explanation:

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37.

Why is the given circuit called an inverter?

mcq2_1029_1

A.	The output is the opposite (inverse) of the input.
B.	The output is in phase with the input.
C.	The output is the same as the input.
D.	There is no output.

Answer: Option A

Explanation:

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38.

What is the frequency of a clock waveform if the period of that waveform is
1.25 mu1

A.	8 kHz
B.	0.8 kHz
C.	0.8 MHz
D.	8 MHz

Answer: Option C

Explanation:

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39.

Why does the TTL family use a totem-pole circuit on the output?

A.	It provides active pull-up.
B.	It provides active pull-down.
C.	It provides active pull-up and active pull-down.

Answer: Option C

Explanation:

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Signals and Switches - General Questions (5)

Signals and Switches - General Questions

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