A switch is a multi-functional networking device that can operate within several OSI layers. Which layer can a switch not function in?
A.
1
B.
2
C.
3
D.
4
Explanation:
Switches do not operate in the Physical layer, OSI Layer 1. They make
packet forwarding decisions (Layer 2), and specific switches exist that make
decisions based upon Layer 3 and Layer 4 data information.