Computer Networks Questions & Answers – Topology

This set of Computer Networks Multiple Choice Questions & Answers (MCQs) focuses on “Topology”.

1. Physical or logical arrangement of network is
a) Topology
b) Routing
c) Networking
d) None of the mentioned
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2. In this topology there is a central controller or hub
a) Star
b) Mesh
c) Ring
d) Bus
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Answer: a
Explanation: None.

3. This topology requires multipoint connection
a) Star
b) Mesh
c) Ring
d) Bus
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Answer: d
Explanation: None.

4. Data communication system spanning states, countries, or the whole world is
a) LAN
b) WAN
c) MAN
d) None of the mentioned
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Answer: b
Explanation: Wide area network(WAN) covers the whole of the world network.

5. Data communication system within a building or campus is
a) LAN
b) WAN
c) MAN
d) None of the mentioned
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Answer: a
Explanation: None.

6. Expand WAN
a) World area network
b) Wide area network
c) Web area network
d) None of the mentioned
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Answer: b
Explanation: None.

7. In TDM, slots are further divided into
a) Seconds
b) Frames
c) Packets
d) None of the mentioned
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8. Multiplexing technique that shifts each signal to a different carrier frequency
a) FDM
b) TDM
c) Either a or b
d) Both a and b
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1. The sharing of a medium and its link by two or more devices is called _________
a) Fully duplexing
b) Multiplexing
c) Both a and b
d) None of the mentioned
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2. Multiplexing is used in _______
a) Packet switching
b) Circuit switching
c) Data switching
d) None of the mentioned
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3. Which multiplexing technique transmits digital signals ?
a) FDM
b) TDM
c) WDM
d) None of the mentioned
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4. If there are n signal sources of same data rate than TDM link has _______ slots
a) n
b) n/2
c) n*2
d) 2n
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5. If link transmits 4000frames per second, and each slot has 8 bits,the transmission rate of circuit this TDM is
a) 32kbps
b) 500bps
c) 500kbps
d) None of the mentioned
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6. The state when dedicated signals are idle are called
a) Death period
b) Poison period
c) Silent period
d) None of the mentioned
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7. Multiplexing can provide
a) Efficiency
b) Privacy
c) Anti jamming
d) Both a and b
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8. In TDM, the transmission rate of the multiplexed path is usually _______ the sum of the transmission rates of the signal sources.
a) Greater than
b) Lesser than
c) Equal to
d) Equal to or greater than
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9. In TDM, slots are further divided into
a) Seconds
b) Frames
c) Packets
d) None of the mentioned
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10. Multiplexing technique that shifts each signal to a different carrier frequency
a) FDM
b) TDM
c) Either a or b
d) Both a and b
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