TAILIEUCHUNG - Top 10 Reasons Why TCP Is Reliable

The protocol used on the Internet for reliable communication is the Transmission Control Protocol (TCP). In this paper, you will learn some of the essentials of TCP by looking at 10 of the top features that make it reliable. In-depth knowledge of protocols can help you in many ways. It enables more efficient troubleshooting. It allows you to understand how firewalls and routers limit the flow of dangerous information in and out of your networks. Our discussion in this white paper is a good introduction, but it does not represent a full, detailed analysis of TCP | Global Knowledge Expert Reference Series ofWhite Papers Top 10 Reasons Why TCP Is Reliable 1-800-COURSES Top 10 Reasons Why TCP Is Reliable Ted Rohling Global Knowledge Instructor CISSP Introduction The protocol used on the Internet for reliable communication is the Transmission Control Protocol TCP . In this paper you will learn some of the essentials of TCP by looking at 10 of the top features that make it reliable. In-depth knowledge of protocols can help you in many ways. It enables more efficient troubleshooting. It allows you to understand how firewalls and routers limit the flow of dangerous information in and out of your networks. Our discussion in this white paper is a good introduction but it does not represent a full detailed analysis of TCP. 1. Mature Protocol Whether or not you agree with the idea the Transmission Control Protocol TCP is reliable because it is a mature protocol. Problems that exist in newer protocols have all been ironed out in the long-standing protocol TCP. TCP is based on Request for Comment RFC 793. An RFC is an Internet document that describes processes and procedures recognized by the Internet Engineering Task Force. RFC 793 released as a standard in 1981 is the standard that describes how TCP operates. TCP features the following 9 capabilities that lead to its true reliability. Protocol captures are being included in the white paper to illustrate the reliability issues discussed. These captures were created with Omnipeek Personal which is a product from WildPackets Inc. 2. Orderly Session Startup Process TCP begins a session by going through a three-step startup process. In step 1 the client sends a special request called a Synchronize to the service with which it is attempting to connect. In step 2 the service sends an Acknowledgement back to the client informing the client that the attempt to connect has been received. The service also sends a Synchronize request with the Acknowledgement. The .

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