Question 1:
(a) Explain what is meant by circuit switching?
Give its main shortcoming and explain its relevance in telephone systems.
(b) Outline the differences between Circuit and Packet switching.
(c) What are the different transmission states? Explain.
Question 2:
(a) Compare Caching and Remote Services.
(b) What is a worm?
Give a brief explanation about the Morris Internet Worm.
(c) Write a short note on program threats.