Network and Security

The Transmission Control Protocol/Internet Protocol (TCP/IP) suite was created by the U.S. Department of Defense (DoD) to ensure that communications could survive any conditions and that data integrity wouldn’t be compromised under malicious attacks. The Open Systems Interconnection Basic Reference Model (OSI Model) is an abstract description for network protocol design, developed as an effort to standardize networking. In this article, I will present the differences between the DoD and the OSI models and then provide details about the DoD’s version of TCP/IP. I will also describe the protocols used at the various layers of the DoD model and provide you with the details of TCP and UDP protocols. Throughout this article you will find useful information concerning the protocol suite of the century: TCP/IP. So if you’re preparing for your CCENT or CCNA exams, or if you’re just interested in networking, this is one article you don’t want to miss! Fasten your s