Network Multiplexing Quiz 1

1. The sharing of a medium and its link by two or more devices is called _________
a) Fully duplexing
b) Multiplexing
c) Both Fully duplexing and Multiplexing
d) None of the mentioned

2. Multiplexing is used in _______
a) Packet switching
b) Circuit switching
c) Data switching
d) None of the mentioned

3. Which multiplexing technique transmits digital signals ?
a) FDM
b) TDM
c) WDM
d) None of the mentioned

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

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

Answer
1 b
2 a
3 b
Explanation: FDM and WDM are used in analog signals.
4 a
Explanation: Each slot is dedicated to one of the source.
5 a
Explanation: Transmission rate= frame rate * number of bits in a slot.

6. The state when dedicated signals are idle are called
a) Death period
b) Poison period
c) Silent period
d) None of the mentioned

7. Multiplexing can provide
a) Efficiency
b) Privacy
c) Anti jamming
d) Both Efficiency & Privacy

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

9. In TDM, slots are further divided into
a) Seconds
b) Frames
c) Packets
d) None of the mentioned

Answer
6 c
7 d
8 a
9 b

Network Topology Quiz 1

1. Physical or logical arrangement of network is
a) Topology
b) Routing
c) Networking
d) None of the mentioned

2. In this topology there is a central controller or hub
a) Star
b) Mesh
c) Ring
d) Bus

3. This topology requires multipoint connection
a) Star
b) Mesh
c) Ring
d) Bus

4. Data communication system spanning states, countries, or the whole world is
a) LAN
b) WAN
c) MAN
d) None of the mentioned

Answer
1 a
2 a
3 d
4 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

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

7. In TDM, slots are further divided into
a) Seconds
b) Frames
c) Packets
d) None of the mentioned

8. Multiplexing technique that shifts each signal to a different carrier frequency
a) FDM
b) TDM
c) Both FDM & TDM
d) None of the mentioned

Answer
5 a
6 b
7 b
8 a
Explanation: FDM stands for Frequency division multiplexing.