IBPS IT SO Study material- Computer Networks-Multiplexing

IBPS IT SO Study material- Computer Networks

Multiplexing

1) The sharing of a medium and its link by two or more devices is called _______
a) Fully duplexing
b) Multiplexing
c) Both a and b
d) None of the mentioned

Answer: b
Explanation: None.

2) Multiplexing is used in _______
a) Packet switching
b) Circuit switching
c) Data switching
d) None of the mentioned

Answer: b
Explanation: None.

3) Which multiplexing technique transmits digital signals ?
a) FDM
b) TDM
c) WDM
d) None of the mentioned

Answer: b
Explanation: FDM and WDM are used in analog signals.

4) If there are n signal sources of same data rate than TDM link has _______ slots
a) n
b) n/2
c) n*2
d) 2^n

Answer: a
Explanation: Each slot is dedicated to one of the source.

5) If link transmits 4000frames per second, and each slot has 8 bits,the transmission rate of circuit this TDM is
a) 32kbps
b) 500bps
c) 500kbps
d) None of the mentioned

Answer: a
Explanation: Transmission rate= frame rate * number os bits in a slot.

6) The state when dedicated signals are idle are called
a) Death period
b) Poison period
c) Silent period
d) None of the mentioned

Answer: c
Explanation: None.

7) Multiplexing can provide
a) Efficiency
b) Privacy
c) Anti jamming
d) Both a and b

Answer: d
Explanation: None.

8) In TDM, the transmission rate of the multiplexed path is usually _______ the sum of the transmission rates of the signal sources.
a) Greater than
b) Lesser than
c) Equal to
d) Equal to or greater than

Answer: a
Explanation: None.

9) In TDM, slots are further divided into
a) Seconds
b) Frames
c) Packets
d) None of the mentioned

Answer: b
Explanation: None.

10) Multiplexing technique that shifts each signal to a different carrier frequency
a) FDM
b) TDM
c) Either a or b
d) Both a and b

Answer: a
Explanation: FDM stands for Frequency division multiplexing.

All the best for your exams @Mission IT SO 2016