COMPUTER FUNDAMENTALS

COMPUTER NETWORKS AND COMMUNICATIONS

NETWORK DEVICES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
At which OSI layer does a router operate to forward network messages?
A
Network
B
Session
C
Physical
D
Transport
E
Data Link
Explanation: 

Detailed explanation-1: -Layer 3 is the network layer. This is where we send information between and across networks through the use of routers. Instead of just node-to-node communication, we can now do network-to-network communication. Routers are the workhorse of Layer 3-we couldn’t have Layer 3 without them.

Detailed explanation-2: -OSI layer 3: The layer three is the network layer. The routers operate at this level. This layer helps to put the data into packets which we may call IP datagrams. They have IP address information of the source and destination address which is transmitted to the hosts and over the network.

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