OSI Model Layers

最新推荐文章于 2024-12-16 00:51:27 发布

转载最新推荐文章于 2024-12-16 00:51:27 发布 · 259 阅读

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原文链接：http://www.cnblogs.com/xfxr/archive/2009/07/26/1531489.html

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#网络

本文介绍了网络通讯层和传输层的基本概念，并对比了两种互联网域套接字：流套接字（TCP套接字）和数据报套接字（UDP套接字）的特点与应用场景。同时，文中还涉及了字节顺序的概念及其在计算机中的两种形式：小端字节序和大端字节序。

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Application Layer (应用层)
Presentatin Layer （表示层）
Session Layer (绘制层)
Transport Layer （传输层）
Network Layer （网络通讯层）
Data-Link Layer （数据链接层）
Physical Layer (物理层)

Two types of Internet domain sockets:
stream sockets (= TCP sockets)
      provides communication in connected mode
      guarantees reliable data transmission|
      costs time in connection set-up and error checking
datagram sockets(=UDP socket)
      provides communication in connectionless mode
      does not guarantee reliable data transmission
      saves time from connection set-up and error checking

What is byte ordering ?

The byte order is the order in which bytes are stored to create larger data types such as the int and
long values

Two types of byte-ordering in computers:

little-endian:low-order (less significant) byte first (Intel microprocessor)
big-endian:high-order (most significant) byte first (Motorola microprocessor)

转载于:https://www.cnblogs.com/xfxr/archive/2009/07/26/1531489.html