Network Engineer L1 L2 Interview Questions and Answers for Freshers

L2 devices operate at the data link layer and L3 devices operate at the network layer.

• L2 devices include switches, bridges, and VLANs.

• L3 devices include routers, layer 3 switches, and firewalls.

• L2 devices forward frames based on MAC addresses.

• L3 devices forward packets based on IP addresses and use routing protocols.

• L2 devices are used to segment networks and reduce collisions.

• L3 devices are used to connect different networks and route traffic between them.

A network is a collection of computers, servers, mainframes, network devices, and other devices connected to each other to share information and resources.

• Networks can be wired or wireless

• Networks can be local (LAN), wide area (WAN), or global (Internet)

• Examples of network devices include routers, switches, and firewalls