Computer Networking — Winter 2021

Describe OSI reference model with brief functionality of each layer.

Write the answer in brief. 1. Explain Wide Area Network. 2. Differentiate: connection oriented and connectionless services

Describe service primitives that provide a simple connection-oriented service.

Write the answer in brief: 1. Describe ARPANET. 2. Explain coaxial cable with diagram.

Write the answer in brief: 1. Differentiate: copper wire and fibre optics 2. Differentiate: Single mode and multi mode fibre.

Explain base band transmission.

Describe Data link layer design issues in brief.

Explain a simple stop-and-wait protocol for an Error-Free Channel.

Write the answer in brief: 1. What is piggybaking? 2. What is sliding window? What is relevance of sending window?

What is Framing Techniques? Explain byte stuffing with an appropriate example.

Describe hidden and exposed station problem. How RTS and CTS help to resolve the problem?

Describe Utopian Simplex Protocol.

What is MAC sub layer? Describe ALOHA in brief.

What is infrastructure mode and ad hoc mode in 802.11 networks?

Describe Distance Vector routing with count-to-infinity problem.

Explain Bluetooth architecture.

What is domain resource record? Explain DNS resource record types.