|  | 12.1 | The Transport Layer
| 12.1.3 | Comparing TCP and IP

TCP/IP is a combination of two individual protocols - TCP and IP. IP is a Layer 3 protocol - a connectionless service that provides best-effort delivery across a network. TCP is a Layer 4 protocol - a connection-oriented service that provides flow control as well as reliability. Pairing the protocols enables them to provide a wider range of services. Together, they represent the entire suite. TCP/IP is the Layer 3 and Layer 4 protocol on which the Internet is based.

| Lab Activity
| In this lab, you will use Protocol Inspector (or equivalent) software to view dynamic TCP operations.