problem 1:

prepare about different network structures in use.

problem 2:

Illustrate out the architecture and usage of ISDN.

problem 3:

Illustrate out the concept of framing in Data Link Layer and its significance in data communication.

problem 4:

Make a distinction between Noisy and Noiseless channels in Data Communication.

problem 5:

describe Connection states and POP3 responses and commands.

problem 6:

Illustrate out the two (2) modes of IP Security.