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Computer Networks Multiple Choice Questions with Answers | Data Communication Objective Questions

Questions
1 The exact format of frame in case of synchronous transmission depends on whether transmission scheme is :
A digital
B analog
C either character oriented or bit oriented
D none of these above

Answer: Option [C]

The exact format of frame in case of synchronous transmission depends on whether transmission scheme is either character oriented or bit oriented

2 For carrying digital data over long distance using either analog signal or digital signal at approximately spaced points, we must have
A amplifiers
B repeater
C switch
D either amplifier or repeater

Answer: Option [D]

In case of long distance transmission we use amplifier or repeater. An amplifier enhances the strength of input signal. On the otherhand repeaters receives a signal and retransmits the same signal after increasing the power.

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3 A digital channel implies that the channel
A is digitized
B is carrying digital data
C is without carrier
D none of these above

Answer: Option [B]
4 Which of the following is not a guided transmission line ?
A Twisted pair
B Coaxial cable
C Optical fiber
D Laser beam

Answer: Option [D]

Laser beam is a unguided transmission medium without wires. The receiver must be in the line of sight to receive the signal.

5 The highest data rate is provided by which of the following medium ?
A Coaxial cable
B Optical fiber
C Microwave
D None of these above

Answer: Option [B]

The highest data rate provided by optical fiber.

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