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Suppose that host a want to send data over tcp to host b, and host b wants to send data to host a over tcp. two separate tcp connections - one for each direction - are needed- false.
What is TCP?
One of the key protocols in the Internet protocol family is the Transmission Control Protocol (TCP). It was first used to supplement the Internet Protocol in early network implementations (IP). TCP/IP is the name given to the full suite as a result. Applications running on hosts interacting through an IP network can transmit a stream of octets (bytes) in a reliable, orderly, and error-checked manner using TCP. TCP, a component of the Transport Layer of the TCP/IP suite, is a critical component of many important internet services, including the World Wide Web, email, remote administration, and file transfer. TCP frequently operates on top of SSL/TLS. TCP is connection-oriented, therefore before data can be sent, a link between the client and server must be made.
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