Question

What OSI layer do switches and bridges use?
a) 1
b) 2
c) 3
d) 4

Answer 1

Switches and bridges use Layer 2 of the OSI model, also known as the Data Link layer.

Step-by-step explanation:

Switches and bridges operate at Layer 2 of the OSI model, also known as the Data Link layer.

The Data Link layer is responsible for transferring data between adjacent network nodes over a local area network (LAN). Switches and bridges use MAC addresses to make forwarding decisions and create separate collision domains.

At Layer 2, switches and bridges can inspect and forward Ethernet frames based on their destination MAC address, enabling efficient and secure data transmission within a LAN.