Question

On which OSI layer do routers function?
a) 1
b) 2
c) 3
d) 4

Answer 1

Routers function on the Network layer (layer 3) of the OSI model, where they are responsible for routing packets across multiple networks using IP addresses.

Step-by-step explanation:

Routers function on layer 3 of the OSI model, which is known as the Network layer. This layer is responsible for the logical addressing of devices and the routing of packets across multiple networks. Routers use IP addresses to make decisions about where to forward packets, and they utilize protocols such as IP (Internet Protocol) and ICMP (Internet Control Message Protocol) to communicate over networks. Since routers operate at the Network layer, they can connect different network types, such as connecting a local area network (LAN) to the internet.