Question

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

(a) 1

(b) 2

(c) 3

(d) 4

I have been asked this question by my college professor while I was bunking the class.

Question is taken from Virtual Circuit in chapter Frame Relay of Computer Network

Answer 1

Correct answer is (d) 4

Easiest explanation: The switch maintains a table for each Virtual Circuit Network. In the data transfer phase, it maintains 2 columns each for incoming data and outgoing data. The columns are in the following order: Source port, Source VCI, Destination port, Destination VCI.