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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.
What is CRC and Checksum CRC (Cyclic redudancy check) CRC, is the most powerful of the redundancy checking methods, is based on binary division. Checksum Checksum
So how packets do determines their way across the Internet? Does each computer linked to the Internet know where the other computers are? Do packets just get 'broadcast' to every c
In slotted Aloha system, it has been measured that 70% of slots are occupied by frames (i.e. the remaining slots are empty). a) How many frames need to be transmitted, on aver
What are the characteristics of Client/Server? Service Encapsulation of services Shared resources Asymmetrical protocols Mix-and-match Transparency of location
Question 3:4 By experimentation, work out the lowest SNR, under which 4 users can si- multaneously communicate, without error, via this system. For SNR, simply report the largest v
Connect a Router and Computer with a Console Cable Step 1 : Set up a basic physical connection. Connect the console (rollover) cable to the console port on the router. Link
File servers are useful for sharing files through a network. With a file server, the client passes requests for file records over network to file server
Encryption Authentication One common technique used to encrypt and authenticate in VPNs is IP security. IP sec is a collection of protocols designed by the IETF( Internet En
Dotted decimal representation is a syntactic form the IP software uses to express 32-bit binary numbers when communicating with humans. Dotted decimal presents every octet in decim
Explain BGP path attributes
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