CS601 Final Term Solved MCQs by Faisal Dar

CS601 FINAL TERM SOLVED MCQs By Faisal Dar

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Q1. Which multiplexing technique transmits digital signals?

A) WDM

B) FDM

C)

TDM

D)

Q2. Which multiplexing technique shifts each signal to a different carrier frequency?

A) TDM

B)

FDM

C)

D)

3. In TDM, for n signal sources of the same data rate, each frame contains _______ slots.

A) 0 to n

B)

n

C) n + 1

D) n - 1

4. In TDM, the transmission rate of the multiplexed path is usually _______ the sum of the

transmission rates of the signal sources. A) 1 less than

B)

Greater than

C) Less than

D) Equal to

5. DS-1 through DS-4 are _______ while T-1 through T-4 are _______.

A) Services; signals

B)

Services; lines

C) Services; multiplexers

D) Multiplexers; signals

6. The sharing of a medium and its link by two or more devices is called _______.

A) Modulation

B) Encoding

C)

Multiplexing

D) Line discipline

7. In AT&T's FDM hierarchy, the bandwidth of each group type can be found by multiplying _______

and adding extra bandwidth for guard bands.

A) The sampling rate by 4000 Hz

B)

The number of voice channels by 4000 Hz

C) The number of voice channels by 8 bits/sample

D) The sampling rate by 8 bits/sample

8. Guard bands increase the bandwidth for _______.

A) TDM

B)

FDM

C) D)

Q9. Which multiplexing technique transmits analog signals?

A) FDM

B) TDM

C) WDM

D)

(a) and (c)

10. In a T-1 line, _______ interleaving occurs.

A) Bit

B)

Byte

C) DS-0

D) Switch

Q11. Which multiplexing technique involves signals composed of light beams?

A)

WDM

B) FDM

C) TDM

D)

12. The VLF and LF bands use _______ propagation for communications.

A) Space

B)

Ground

C) Sky

D) Line of sight