The number of layers in ISO-OSI reference model is
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Correct answer: (B) 7
Explanation
The OSI model has 7 layers: Physical, Data Link, Network, Transport, Session, Presentation and Application.
From DSSSB TGT Computer Science Practice Set 3
This is question 15 of DSSSB TGT Computer Science Practice Set 3. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.