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Doctors Medicines MCQs Q&A

  1. Presentation layer
  2. Session layer
  3. Data link layer
  4. Application layer
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1 Answers

Option 1 : Presentation layer

 OSI Model:

The Open Systems Interconnection (OSI) model describes seven layers that computer systems use to communicate over a network. It was the first standard model for network communications, adopted by all major computer and telecommunication companies in the early 1980s

 The functionality of different layers:

Application- The seventh layer of the OSI model, is responsible for providing services to users.

Presentation- The sixth layer of the OSI model, is responsible for translation, encryption, authentication, and data compression.

Session- The fifth layer of the OSI model, responsible for the establishment, management, and termination of logical connections, between two end-users.

Transport- The fourth layer of the OSI model, is responsible for reliable end-to-end delivery and error recovery.

Network- The third layer of the OSI model, is responsible for the delivery of a packet to the final destination.

Data Link- The second layer of the OSI model, is responsible for node-to-node delivery.

Physical- The first layer of the OSI model, is responsible for the mechanical and electrical specifications of the medium.

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