帮忙翻译一个摘要（计算机的）

来源：百度知道 编辑：UC知道 时间：2024/05/06 07:55:20
随着互联网规模的爆炸式增长，传输的信息数据量不断增多，拥塞问题逐渐成为了流量管理的核心内容。TCP协议支持可靠地传送用户数据，并采用端到端的滑动窗口机制来解决拥塞，从而能够有效地利用网络资源，为用户提供优质的服务。但是，现有的TCP协议在公平性方面存在一定的问题，主要体现为带宽争用。
针对以上问题，在本文中，我们首先介绍TCP拥塞控制的基本原理以及工作方式。其次，列举并叙述现有的TCP版本和算法。第三，介绍一下网络仿真所关注的内容，并对仿真软件OPNET做一个简略的介绍，了解其建模方式和基本功能。第四，我们利用OPNET进行建模，仿真并比较不同情况下TCP各种版本的工作性能。最后，我们建立一个模型来说明TCP协议存在的带宽争用的问题。

Modern Distance Education along with the development of modern information technology and produce a new type of education model is to build a knowledge-based economy era people lifelong learning system the principal means. Web-based distance education system can give full play to the network in the teaching of advantages, and demonstrate to students as the main body, led teachers, students build full participation and independent learning environment, and other modern educational thinking. With the continuous development of computer technology, online distance education are more widely used, and online education and online examination is one of the applications. "Web-based distance learning system" is based on the B / S development of the typical management information system, it easy to use, simple operation, a wide range of applications.
"Web-based distance learning system," including online education and on-line examination of two subsystems, which inclu