Which of the following is not a phase of virtual circuit network?

• A. Setup phase
• B. Data transfer phase
• C. Termination phase
• D. Teardown phase

Steps required in setup process are ___________

• A. Setup request and acknowledgement
• B. Setup request and setup response
• C. Setup request and setup termination
• D. Setup and termination steps

During teardown phase, the source, after sending all the frames to destination, sends a _____ to notify termination.

• A. Teardown response
• B. Teardown request
• C. Termination request
• D. Termination response

Delay of the resource allocated during setup phase during data transfer is ________

• A. Constant
• B. Increases for each packet
• C. Same for each packet
• D. Different for each packet

Delay of the resource allocated on demand during data transfer is ________

• A. Constant
• B. Increases for each packet
• C. Same for each packet
• D. Different for each packet

In virtual circuit network, the number of delay times for setup and teardown respectively are _______

• A. 1 and 1
• B. 1 and 2
• C. 2 and 1
• D. 2 and 2

In data transfer phase, how many columns does the table contain?

• A. 1
• B. 2
• C. 3
• D. 4

Two broad categories of congestion control are

• A. Open-loop and closed-loop
• B. Open-control and closed-control
• C. Active control and passive control
• D. Active loop and passive loop

In open-loop control, policies are applied to __________

• A. Remove after congestion occurs
• B. Remove after sometime
• C. Prevent before congestion occurs
• D. Prevent before sending packets

Retransmission of packets must not be done when _______

• A. Packet is lost
• B. Packet is corrupted
• C. Packet is needed
• D. Packet is error-free