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Computer Networks
Reference Models
Q
The number of layers in ISO OSI reference model is __________
AA. 4
BB. 5
CC. 6
DD. 7
Correct Answer:
D. D. 7
Explanation:
In OSI reference model, there are 7 layers namely Application, Presentation, Session, Transport, Network, Data Link and Physical layer. Each layer uses a protocol to perform its designated function, for example, the data link layer uses error detection protocols for error control functions.
