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1) In message switching system, an incoming message gets ____ especially if the required route is busy. a. lost b. stored in a queue & retransmitted c. sampled d. recovered
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2) Which type of switching network involves the establishment of a dedicated path between two stations? a. Message Switching b. Packet Switching c. Circuit Switching d. Manual Switching
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3) In packet switching, what does the header of each short size of packet consist of? a. Source address b. Destination address c. Intermediate nodes d. All of the above
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4) In manual switching, which kind of battery exchange has the provision of subscribers set along with magneto generator? a. Local battery exchange b. Central battery exchange c. Both a and b d. None of the above
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5) If a group of trunk is offered 1200 calls during the busy hour & 20 calls are lost along with the average call duration of about 7 min, then what would be the total duration of congestion period? a. 21.6 sec b. 42.2 sec c. 57.6 sec d. 98.2 sec
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6) In analyzing the traffic performance, how is the number of trunk decided with the provision of the Grade of Service (GoS) especially for larger group? a. By normal load condition b. By overload condition c. By underload condition d. None of the above
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7) If the queuing systems are connected in tandem configuration, what would be the nature of delay? a. Commutative b. Distributive c. Cumulative d. Deductive
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8) Which type of holding time distribution is assumed for the voice conversation on telephone? a. Constant b. Exponential c. Both a and b d. None of the above
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9) Which model of loss system allows the usage of Poisson distribution model for traffic analysis especially by assuming infinite number of users? a. Lost Calls Cleared (LCC) b. Lost Calls Returned (LCR) c. Lost Calls Held (LCH) d. None of the above
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10) In two-stage network, which phenomenon/situation occurs due to impossible connectivity of given incoming trunk to selected outgoing trunk specifically because of link utilization for other connection between primary and secondary switches? a. Bursting b. Blinking c. Blocking d. Burning
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