Physical Layer - Part 9 - MCQs with Answers

Physical Layer - Part 9 - MCQs with Answers

Circuit Switched Networks

1. The requisite amount of bandwidth for transmitting voice and analog signals is _________

a. directly proportional to the data rate
b. inversely proportional to the data rate
c. directly proportional to the dataflow channel control capability
d. inversely proportional to the dataflow channel control capability

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2. Which lines are provided by the telephone companies for increasing the performance level to the maximum extent necessary for several applications in comparison to that of the dial-up connections?

a. Voice Grade Conditioning Line
b. Conditional Lines
c. Both a & b
d. None of the above

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3. What is/are the fundamental role/s of circuit switching?

a. Setting up an end-to-end path at the beginning of a session
b. Release of an end-to-end path at the end of session
c. Dedicated end-to-end path to specific application
d. All of the above

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4. When does it become possible to prefer the hierarchical technique for routing control operations in circuit switching networks?

a. when the volume of traffic is small between multiple switches

b. when the volume of traffic is large between multiple switches

c. when the volume of traffic is uncontrollable at low blocking probability

d. when the volume of traffic is determined by the state of network links

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5. Which among the below specified consequences give rise to the generation of the sensitivity problem in an hierarchical routing control mechanism?

a. Increase in trunk utilization efficiency due to increase in an offered load

b. Decrease in trunk utilization efficiency due to decrease in an offered load

c. Increase in trunk utilization efficiency due to decrease in an offered load

d. Decrease in trunk utilization efficiency due to increase in an offered load

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6. What happens when the spare circuit is utilized in the system of hierarchical control and routing?

a. System exhibits high sensitivity to high traffic
b. System exhibits low sensitivity to high traffic
c. System exhibits consistency in the traffic flow
d. System does not get affected as it is irrespective of sensitivity

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