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Here is the MCQs guide for the topic of Data Communication. you will find various types of questions along with there answers in this
Q. The _______ layer changes bits into electromagnetic signals.
A.
Physical
B.
Transport
C.
Data link
D.
None of these


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Q. The _______ layer is the layer closest to the transmission medium.
A.
Network
B.
Physical
C.
Data link
D.
Transport


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Q. The Internet model consists of _______ layers.
A.
3
B.
5
C.
7
D.
8


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Q. What is the main function of the transport layer?
A.
Process-to-process delivery
B.
Node-to-node delivery
C.
Synchronization
D.
Updating and maintenance of routing tables


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Q. A cable break in a _______ topology stops all transmission.
A.
Mesh
B.
Star
C.
Primary
D.
Bus


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Q. A television broadcast is an example of _______ transmission.
A.
Half-duplex
B.
Full-duplex
C.
Simplex
D.
Automatic


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Q. An unauthorized user is a network _______ issue.
A.
Performance
B.
Reliability
C.
Security
D.
All of the Above


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Q. The information to be communicated in a data communications system is the ________
A.
Medium
B.
Protocol
C.
Transmission
D.
Message


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Q. The _______ is the physical path over which a message travels.
A.
Protocol
B.
Medium
C.
Signal
D.
All of the above


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Q. Which topology requires a central controller or hub?
A.
Star
B.
Mesh
C.
Bus
D.
Ring


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