Transmission path between two devices in which signals propagate directly from transmitter to receiver with no intermediate device

1. The trem is called direct link
2. direct link is also used in guided media
3. direct link is also used in unguided media
4. All of these
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Answer: D
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In a multipoint guided configuration more than two devices share the _____

1. Same medium
2. Different medium
3. Medium configured by Network admin
4. Both A and B
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Answer: A
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A transmission may be

1. Simplex
2. Half-duplex
3. Full-duplex
4. All of these
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Answer: D
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One station is transmitter and other is receiver and signal transmit only one direction

1. Simplex
2. Half-duplex
3. Full-duplex
4. All of these
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Answer: A
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Both station may transmit data but only one at a time

1. Simplex
2. Half-duplex
3. Full-duplex
4. Partial duplex
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Answer: B
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Both station may transmit data at once and may received simultaneously

1. Simplex
2. Half-duplex
3. Full-duplex
4. Partial duplex
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Answer: C
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A signal is gererated by the

1. Transmitter
2. Receiver
3. Encoder
4. All of these
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Answer: A
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Which statement is/are true regarding signal?

1. Signal is function of time
2. Also expressed as a function of frequency
3. Signal consists of components of different frequencies
4. All of these
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Answer: D
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Electromagnetic signal is/are

1. Analog
2. Digital
3. Continuous or discrete
4. All of these
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Answer: D
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A mathematical definition: a signal s(t) is continuous

1. if `lim_(t->oo)s(t)=s(a)` for all a.
2. if `lim_(t->a)s(t)=s(a)` for all a.
3. if `lim_(t->0)s(t)=s(a)` for all a.
4. if `lim_(t->0)s(t)^t=s(a)` for all a.
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Answer: B
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