FUNDAMENTALS OF COMPUTER

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TELECOMMUNICATIONS SYSTEMS

NETWORK ARCHITECTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The number of layers in ISO OSI reference model is ____
A
4
B
5
C
6
D
7
Explanation: 

Detailed explanation-1: -In the OSI reference model, the communications between a computing system are split into seven different abstraction layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

Detailed explanation-2: -OSI Model Explained: The OSI 7 Layers.

Detailed explanation-3: -7 Layers of OSI Model. The OSI model is broken up into seven layers. Each layer fulfills an important role within the networking stack and communicates with other layers by exchanging protocol data units (PDUs).

Detailed explanation-4: -Layer 7 or the application layer of the OSI reference model deals directly with applications. Within this narrow scope, layer 7 is responsible for displaying data and images to the user in a format humans can recognize. This in turn enables users to interface with the presentation layer below the application level.

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