Key Terms

Review the following list of key terms:

  • ACK A control flag specifying that the Acknowledgment Number field in the TCP header is significant.

  • Acknowledgment Number field— A field in the TCP header specifying the next sequence number the computer is expecting to receive. The acknowledgment number, in effect, acknowledges the receipt of all sequenced bytes prior to the byte specified in the acknowledgment number.

  • Active open— A state in which TCP is attempting to initiate a connection.

  • Checksum— A 16-bit calculated field used to ensure detection of corrupted datagrams.

  • Connection-oriented protocol— A protocol that manages communication by establishing a connection between the communicating computers.

  • Connectionless protocol— A protocol that ...

Get Sams Teach Yourself TCP/IP in 24 Hours, Fourth Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.