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.

Detailed explanation-2: -Layer 7 firewalls are more advanced than layer 3 firewalls. They can look into the contents of data packets coming into and out of your business’s network to determine whether they are malicious. If a data packet contains malware, the layer 7 firewall can reject it.

Detailed explanation-3: -The network layer is considered the backbone of the OSI Model. It selects and manages the best logical path (virtual circuit) for data transfer between nodes by assigning destination and source IP addresses to each data segment.

Detailed explanation-4: -Logical Addressing: Every device that communicates over a network has associated with it a logical address, sometimes called a layer three address. For example, on the Internet, the Internet Protocol (IP) is the network layer protocol and every machine has an IP address.