Basic CS-Networks [3i Infotech Placement]: Sample Questions 64 - 65 of 90

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Question 64

Networks
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Describe in Detail

Essay▾

What is EGP (Exterior Gateway Protocol) ?

Explanation

Understanding of EGP
  • An obsolete routing protocol used for data exchange between neighbouring gateway hosts in autonomous systems.
  • Original routing protocol developed for communicating routing information between system on the internet
  • Used in research institutes, universities, government agencies, and private organizations.
  • No longer used because of poor support for multipath networking environments.
  • Replaced by Border Gateway Protocol, which provides additional capabilities.
  • Was based on periodic message exchange polling for neighbour reachability and poll commands to request update responses.
  • Used between hosts on the internet to exchange routing table information. .

Question 65

Networks
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Describe in Detail

Essay▾

Expand IDEA.

Explanation

  • International Data Encryption Algorithm.
  • Uses a block cipher with a 128-bit key.
  • Considered among the best publicly known algorithms.
  • Patented in the United State and in most of the European countries.
  • Provides good privacy
  • Incorporated after the original cipher used was v1.0, BassOmatic.
  • Entirely avoids use of any lookup tables or S-boxes.
  • Divides data into four quarters, each 16 bits long- combination of two 16 bit values produces a 16-bit result through addition, XOR and multiplication.

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