COMPUTER NETWORKING

Detailed explanation-1: -Network layer, layer 3. The most significant protocol at layer 3 (also called the network layer) is the Internet Protocol, or IP. IP is the standard for routing packets across interconnected networks–hence, the name internet. It is an encapsulating protocol similar to the way Ethernet is an encapsulating protocol.

Detailed explanation-2: -The OSI model has 7 layers, and layer 3, the network layer, is responsible for packet forwarding, including routing through intermediate routers. The Open Systems Interconnection (OSI) model is a series of layers through which computer systems use to communicate.

Detailed explanation-3: -Layer 3 is the Network or Internet layer. When transmitting data, this layer adds a header containing the source and destination IP addresses to the to the data received from the Transport layer. The packet it creates will then be forwarded to the MAC or Data Link layer.

Detailed explanation-4: -IP Address works at the network layer of OSI model (actually the IP layer of TCP/IP model). This is a logical address (and not the embedded hardware address) which is assigned by the Network administrator or Internet service provider. Hence IP address may change each time you connect with the Internet.