#What role "IP" plays in the TCP/IP?

Internet Protocol is basically and broadly used for letting a first computer "discover" a second target computer on a network for establishing communication. However, the Internet Protocol does not help the computers to actually communicate, as this is the Job of Transmission Control Protocol.

Few points to ponder:

• IP works on Network layer, i.e., Layer 3 of OSI model
• IP deals with IP addresses, subnet masks, default gateways, and DNS
• IP is a typical routing protocol used for routing information over network
• (Rephrased) IP facilitates how computers discover each other on a network
• (Rephrased) IP protocol is responsible for helping one computer to find another computer on a network to start communication
• (Rephrased) IP controls routing of information to different network nodes or sub-networks

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