Question

1.Which transmission media has the highest transmission speed in a network?

a. Coaxial cable

b.Twisted pair cable

c.Optical fiber

d.Electrical cable

2.Bits can be send over guided and unguided media as analog signal by

a.Digital modulation

b.Amplitude modulation

c.Frequency modulation

d.Phase modulation

3.Loss in signal power as light travels down the fiber is called?

a.Attenuation

b.Propagation

c.Scattering

d.Interruption

4.Which of the following is not a transmission medium?

a.Telephone lines

b.Coaxial cables

c.Modem

d.Microwave systems

5.The copper wire is the example of

a.Unguided media

b.Guided media

c.Group media

d.None

6......... cables carry data signals in the form of light.

a.Coaxial

b.Fiber-optic

c.Twisted-pair

d.None of the above

7.A switch in a datagram network uses a routing table that is based on the ........ address. a. Source

b.Destination

c.Local

d.None of the above

8.A local telephone network is an example of a ........... network.

a.Packet-switched

b.Circuit-switched

c.Message-switched

d.None of the above

9.In .........., there is no resource allocation for a packet.

a.Datagram switching

b.Circuit switching

c.Frame switching

d.None of the above

10.We can say that a packet switch has .......... types of components.

a.Two

b.Three

c.Four

d.None of the above

11.In ........... switching, the paths in the circuit are separated from one another spatially. a. Time-division

b.Space-division

c.Two-dimensional

d.Three-dimensional

12.In ............., we combine signals from different sources to fit into a larger bandwidth. a. Line coding

b.Block coding

c.Spread spectrum

d.None of the above

Answer 1

1.Option C is the correct answer.
Optical Fiber has considered it has the highest transmission speed in the network.

2.Option A is the correct answer.
Digital Modulation.
We know that in analog modulation, the digital low-frequency baseband signal is used.
it is transmitted over high frequency.
DIgital modulation has only one difference that it has values as discrete 0's and 1's


3.Option A is the correct answer.
The loss in signal power as light travels down the fiber is called attenuation.

4.Option D is the correct answer.
Microwave System is not used for the transmission medium.

5.Option B is the correct answer.
Copper wire is used as guided media.

6.Option B is the correct answer.
Fiber optic cables carry data signals in the form of light.


7.Option B is the correct answer.
A switch in a datagram network uses a routing table that is base on the destination address.

8.Option B is the correct answer.
The telephone network is an example of a circuit-switched network.


9.Option A is the correct answer.
In datagram switching, there is no resource allocation for a packet.

10.Option C is the correct answer.
We can say that a packet switch has four types of components.

11.Option B is the correct answer.
In space-division switching, the paths in the circuit are separated from one another spatially.


12.Option C is the correct answer.
In Spread Spectrum we combine signals from different sources to fit into a larger bandwidth.











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