CS 4504 Lecture Notes - Lecture 3: Presentation Layer, Uniform Resource Identifier, Uniform Resource Locator
6 Sep 2016
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Document Summary
Host and resource identification and internet protocol addresses. This means that there can be 232 (4 billion) different addresses. Each ip address must identify both the network on which a host resides and then the particular host on that network. Address space is divided into five classes a, b, c, d, e: each class has a unique prefix. Class b starts with a bit sequence 10. Class c with 110: the remaining bits in each address are used for identifying the network and the host. We need to have different classes in order to accommodate more computers on each network. Uniform resource identifier (uri) and uniform resource locator (ulr) In order to deliver data to a specific process we need a scheme. We will discuss process identifier (pid) assigned to a process by the operating system. Transportation requires a logical entity known as port.
