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Data Communication and Computer Networks MCQ Questions and Answers

Questions
6 Which multiplexing technique is used to transmit digital signals ?
A FDM
B CDM
C TDM
D None of the above

Answer: Option [C]

TDM is used to transmit digital signals. In this multiplexing technique the transmitted signal is divided into many segments and each segment is assigned a separate time slot.

7 Which multiplexing technique is used to transmit analog signals ?
A FDM
B Synchronous TDM
C Either (a) or (b)
D None of these

Answer: Option [C]
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8 GSM stands for
A Global System for Mobile Communication
B Global Service Management
C General System for Mobile Communication
D None of these above

Answer: Option [A]

GSM stands for Global System for Mobile Communication. It is a standard for second generation digital cellular system which contains various protocols.

9 To employ multi-access in GSM, users are given different
A time slots
B bandpass filters
C handsets
D none of these

Answer: Option [A]
10 GSM/CDMA systems
A are limited to very low speed data
B require no local loop wires
C are predominantly used for voice
D all of the above

Answer: Option [C]

GSM/CDMA systems are predominantly used for voice. GSM operates on carrier wave and CDMA operates on the available bandwidth of the spectrum.

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