Data Communication and Networking MCQs

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1.

What is the minimum number of wires needed to send data over it serial communication link layer?

   A.) 1
   B.) 2
   C.) 3
   D.) 4

Answer: Option 'B'

2

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2.

Which data communication method is used to send data over a serial communication link?

   A.) simplex
   B.) half duplex
   C.) full duplex
   D.) all of these

Answer: Option 'C'

​full duplex

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3.

The interactive transmission of data within a time sharing system may be best suited to…..

   A.) simplex line
   B.) half duplex lines
   C.) full duplex line
   D.) bi-flex lines

Answer: Option 'B'

​half duplex lines

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4.

Which of the following is an example of a bounded medium?

   A.) coaxial cable
   B.) wave guide
   C.) fiber optic cable
   D.) all of these

Answer: Option 'D'

all of these

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5.

The area of coverage of a satellite radio beam is called its….

   A.) beam width
   B.) circular polarization
   C.) footprint
   D.) identity

Answer: Option 'C'

​footprint

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6.

Buffering is ________. 

   A.) the process of temporarily storing the data to allow for small variation in device speeds.
   B.) a method to reduce cross-talks
   C.) storage of data within the transmitting medium until the receiver is ready to receive
   D.) a method to reduce the routing overhead

Answer: Option 'A'

the process of temporarily storing the data to allow for small variation in device speeds.

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7.

The amount of uncertainty in a system of the symbol is called.

   A.) bandwidth
   B.) entropy
   C.) loss
   D.) quantum

Answer: Option 'B'

​entropy

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8.

Coaxial cable has conductors with _______.

   A.) a common axis
   B.) equal resistance
   C.) the same diameter
   D.) none of these

Answer: Option 'A'

​a common axis

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9.

Teleprinters _________. 

   A.) are used for printing at remote locations, not for input.
   B.) offer both high-speed operation and a variety of formatting controls.
   C.) have a printer for output and a keyboard for input
   D.) are same as teletypes.

Answer: Option 'C'

​have a printer for output and a keyboard for input

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10.

Which of the following statements is incorrect?

   A.) teleprocessing combing telecommunication and DP techniques in online activities.
   B.) Multiplexers are designed to accept data from several I/O devices and transmit a unified stream of data on one communication line.
   C.) a half-duplex line is a communication line in which data can move in two directions, but not the same time.
   D.) batch processing is the preferred processing mode for telecommunication operations.

Answer: Option 'D'

batch processing is the preferred processing mode for telecommunication operations.

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