Aptitude [Sasken Placement]: Sample Questions 35 - 35 of 35

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Question 35


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What is meant by reliable transmission protocol? Why is it called so?


  • A reliable protocol provides reliability properties with respect to the delivery of data to the intended recipient (s) , as opposed to an unreliable protocol, which does not provide notifications to the sender as to the delivery of transmitted data. The term “reliable” means assured.
  • TCP, the main protocol used on the Internet, is a reliable unicast protocol. UDP, often used in computer games or in other situations where speed is an issue and the loss of a little data is not as important because of the transitory nature of the data, is an unreliable protocol.

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