Which network device functions only at Layer 1 of the OSI model?

Which network device functions only at Layer 1 of the OSI model?

A . Option A
B . Option B
C . Option C
D . Option D
E . Option E

View Answer

Answer: B

Explanation:

Most hubs are amplifying the electrical signal; therefore, they are really repeaters with several ports. Hubs and repeaters are Layer 1 (physical layer) devices.