O'Reilly logo

CCIE Security Exam Certification Guide by Henry Benjamin

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Transmission Control Protocol

Transmission Control Protocol (TCP) is the most widely used protocol today, and all Cisco certification exams will test your understanding of TCP/IP. This section covers TCP and how this connection-oriented protocol ensures efficient delivery of data across an IP network.

The TCP/IP model actually does not fully conform to the OSI model because IP was developed by the Department of Defense in the 1980s.

IP provides each host device with a 32-bit host address that is used to route across the IP network. TCP is a Layer 4 protocol that ensures data is delivered across any IP cloud by using mechanisms such as connection startup, flow control, slow start (a congestion avoidance scheme in TCP in which a host can increase ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required