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CCNA Intro 640-821 Exam Practice Questions

Repeaters, switches, and routers

 

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Q4. Repeaters work at which layer of ISO OSI reference model?

                A. Physical

                B. Datalink

                C. Network

                D. Transport

 

        

Correct answer: A

Explanation:

Repeaters work at Physical layer (Layer 1),
Bridges and simple switches work at Data Link Layer (Layer 2),
Routers work at Network Layer (Layer 3) of OSI Reference Model.

 

 

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