Basic CS-Networks [TCS Placement]: Sample Questions 126 - 127 of 133

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Question 126

Networks
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Describe in Detail

Essay▾

Which layers are user support layers?

Explanation

User support layers are:

  • Session layer
    • Session Layer manages events that initiate and tear down network connections.
    • Supports multiple types of connections created dynamically and run over individual networks.
  • Presentation layer

    Presentation layer is the simplest- handles syntax processing of data such as format conversions and encryption/decryption for application layer.

  • Application layer
    • Supplies network services to end-user applications- typically protocols on user՚s data.
    • For example, in web browser, the application layer protocol “HTTP” packages the data to send and receive web page content.

Question 127

Networks
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Describe in Detail

Essay▾

What is frame relay, in which layer it comes?

Explanation

  • Frame relay is a packet switching technology operating in the data link layer designed for efficient data transmission for intermittent traffic between local area networks (LANs) and between endpoints in wide area networks (WANs) .
  • Frame relay sends information over a WAN by dividing data into packets.
  • Frame relay interface can be either a carrier-provided public network or a network of privately owned equipment serving a single enterprise.
Given the Image is Define the Frame Relay Layer

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