Reliance Jio Computer Communications Quiz-1

Question 1

Time: 00:00:00
Q.1 Which of the following statements is incorrect?

teleprocessing combing telecommunication and DP techniques in online activities.

teleprocessing combing telecommunication and DP techniques in online activities.

Multiplexers are designed to accept data from several I/O devices and transmit a unified stream of data on one communication line.

Multiplexers are designed to accept data from several I/O devices and transmit a unified stream of data on one communication line.

a half-duplex line is a communication line in which data can move in two directions, but not the same time

a half-duplex line is a communication line in which data can move in two directions, but not the same time

batch processing is the preferred processing mode for telecommunication operations.

batch processing is the preferred processing mode for telecommunication operations.

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Question 2

Time: 00:00:00
2)  The area of coverage of a satellite radio beam is called its….

 

beam width

beam width

circular polarization

circular polarization

footprint

footprint

identity

identity

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Question 3

Time: 00:00:00
3)  Avalanche photodiode receiver can detect bits of transmitted data by receiving.

1 Photon

1 Photon

100 Photons

100 Photons

10 photons

10 photons

200 photons

200 photons

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Question 4

Time: 00:00:00
4) Satellite transponders.

use a higher frequency for reception of radiation from earth stations and lower frequency for transmission to earth stations.

use a higher frequency for reception of radiation from earth stations and lower frequency for transmission to earth stations.

use lower frequency reception of radiation from earth stations and higher frequency for transmission to earth stations.

use lower frequency reception of radiation from earth stations and higher frequency for transmission to earth stations.

use a single frequency for reception and transmission from one point on earth to another

use a single frequency for reception and transmission from one point on earth to another

are devices that echo the radiation without change from one point on earth to another

are devices that echo the radiation without change from one point on earth to another

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Question 5

Time: 00:00:00
5) On a digital circuit, the absence of a transmitted signal.

has no effect on equipment

has no effect on equipment

occurs when a DTE has no data transmit

occurs when a DTE has no data transmit

is compensated for by the transmission of intentional bipolar violations to maintain equipment clocking.

is compensated for by the transmission of intentional bipolar violations to maintain equipment clocking.

occurs only after 9 p.m.

occurs only after 9 p.m.

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Question 6

Time: 00:00:00
6) PCM sampling rate is 8000 samples per second because….

that represents the maximum rate that technology supports.

that represents the maximum rate that technology supports.

this rate allows unique values.

this rate allows unique values.

this rate allows the faithful recon-traction of an analog signal.

this rate allows the faithful recon-traction of an analog signal.

this rate is easily produced by a sampling chip

this rate is easily produced by a sampling chip

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Question 7

Time: 00:00:00
7. Bipolar signaling is used in place of unipolar signaling on T lines because….

bipolar signaling produces twice as many marks as a unipolar signal.

bipolar signaling produces twice as many marks as a unipolar signal.

it allows transmission at polar locations.

it allows transmission at polar locations.

bipolar signaling reduces residual DC voltage buildup, allowing a digital signal to be separated from power through the use of a transformer.

bipolar signaling reduces residual DC voltage buildup, allowing a digital signal to be separated from power through the use of a transformer.

it allows transformers to be spaced far from one another, which reduces the cost of transmission.

it allows transformers to be spaced far from one another, which reduces the cost of transmission.

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Question 8

Time: 00:00:00
8)  Carrier is….

one or more conductors that serve as a common connection for a related group a device.

one or more conductors that serve as a common connection for a related group a device.

a continuous frequency capable of being modulated or impressed with a second signal

a continuous frequency capable of being modulated or impressed with a second signal

the condition when two or more sections attempt to use the same channel at the same time.

the condition when two or more sections attempt to use the same channel at the same time.

a collection of interconnected functional units that provides a data communications service among stations attached to the network

a collection of interconnected functional units that provides a data communications service among stations attached to the network

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Question 9

Time: 00:00:00

9) Which of the following techniques is used for allocating capacity on a satellite channel using fixed assignment FDM?

Amplitude modulation

Amplitude modulation

Frequency-division multiple access

Frequency-division multiple access

Frequency modulation

Frequency modulation

Frequency shift keying

Frequency shift keying

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Question 10

Time: 00:00:00
10) Internet address can be used to refer to networks as well as individual hosts. By convention, the network address has hosted with all bits.

1

1

combinations of 0 and 1

combinations of 0 and 1

none of these

none of these

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["0","40","60","80","100"]
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