Basic CS-Networks [TCS Placement]: Sample Questions 111 - 112 of 133

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Question 111

Networks
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Describe in Detail

Essay▾

What is the minimum and maximum length of the header in the TCP segment and IP datagram?

Explanation

  • The header should have a minimum length of bytes and can have a maximum length of bytes.
Given the Image is Define the Transmission Control Protocol (TCP)
  • The TCP header consists of:
    • Minimum byte (5 words) of fixed-format info
    • Optional part (always an integer multiple of 4-bytes)
  • The TCP data has at most bytes data minus the options length (bytes)

    The second 20 comes from IP header

  • Thus any TCP segment can have at most bytes in total
  • However this number is usually severely limited by the network maximum transfer unit which is usually bytes.

Question 112

Networks
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Describe in Detail

Essay▾

What is code access security (CAS) ?

Explanation

  • Code access security (CAS) is part of the . NET security model preventing unauthorized access of resources and operations, and restricting code to perform particular tasks.
  • Enforces varying levels of trust on different code running in the same application.
  • Is not to be used for enforcing security boundaries based on code origination or other identity aspects.
Given the Image is Define the Code-Access Security Key Elements

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