problem 1: What are the two reasons for using the layered protocols?

problem 2: What do you mean by the term link to link layers of OSI reference model? Describe their functions in brief?

problem 3: prepare a brief note on ISDN?

problem 4: What is the basic difference between boundary level masking and non-boundary level masking? Provide illustrations.

problem 5: Draw the IP datagram header format. IP datagram has a checksum field still it is termed an unreliable protocol. Validate?

problem 6: What are the fundamental principles that were applied to arrive at the seven layers in the OSI model?

problem 7: Describe the working of 3 bit sliding window protocol with appropriate illustration.

problem 8: Describe the given ARQ methods in detail:

a) Stop and wait ARQ
b) Selective repeat ARQ

problem 9: What are the reasons for using the layered protocols?

problem 10: describe the main responsibilities of the data link layer?