Packet Switching & Circuit Switching - Computer Networks Questions and Answers

1.

Method(s) to move data through a network of links and switches

   A.) Packet switching
   B.) Circuit switching
   C.) Line switching
   D.) Both a and b

Answer: Option 'D'

Both a and b

2.

If there are N routers from source to destination, total end to end delay in sending packet P(L->number of bits in the packet R-> transmission rate)

   A.) N
   B.) (N*L)/R
   C.) (2N*L)/R
   D.) L/R

Answer: Option 'B'

(N*L)/R

3.

Most packet switches use this principle

   A.) Stop and wait
   B.) Store and forward
   C.) Both of the mentioned
   D.) None of the mentioned

Answer: Option 'B'

The packet switch will not transmit the first bit to outbound link until it recieves the entire packet.

4.

The resources needed for communication between end systems are reserved for the duration of session between end systems in ________

   A.) Packet switching
   B.) Circuit switching
   C.) Line switching
   D.) Frequency switching

Answer: Option 'B'

Circuit switching

5.

A local telephone network is an example of a _______ network

   A.) Packet switched
   B.) Circuit switched
   C.) both of the mentioned
   D.) none of these

Answer: Option 'A'

Packet switched

6.

In _________ resources are allocated on demand.

   A.) packet switching
   B.) circuit switching
   C.) line switching
   D.) frequency switching

Answer: Option 'A'

packet switching

7.

As the resources are reserved between two communicating end systems in circuit switching, this is achieved

   A.) authentication
   B.) guaranteed constant rate
   C.) reliability
   D.) store and forward

Answer: Option 'B'

guaranteed constant rate


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