NIELIT 2016 MAR Scientist C - Section C: 21

Question

Repeaters function in

• A. Physical layer
• B. Data link layer
• C. Network layer
• D. Both (A) and (B)

Comments

Repeater function in Physical Layer.

Answer 1

Repeater function at physical layer

Repeater is used to regenerate the signal lost during transmission. Repeater is also used to connect two same LAN segments

Answer 2

 

Option (A) is correct

Repeaters function in the Physical (MAC) layers.

Repeaters operate at the physical layer, i.e., the bottom layer of the seven-layer OSI reference model. They can only operate on the same type of physical layer, i.e., tthernet-to-tthernet, or token ring-to-token ring. ... Unlike bridges and switches, repeaters do not have physical addresses on the network.