计算机网络的分层结构 [英] Layered Structure of Computer Networking

问题描述

设想一个协议堆栈，其中，不存在输送层。将如何影响设计：
•网络层？
•链路层？
•应用层？

Imagine a protocol stack, wherein there is no transport layer. How would that affect the design of: • The Network Layer? • The Link Layer? • The Application Layer?

现在，想象一下，只有两层的协议栈：应用层和放大器;该Everythingelse层。

Now, imagine a protocol stack with only two layers: The Application Layer & The Everythingelse Layer.

•将带来的后果是这样一个网络架构怎么样？
•什么会的优势（如果有的话）是什么？
•什么会缺点（如果有的话）是什么？

• What would the consequences be of such a networking architecture? • What would advantages (if any) be? • What would disadvantages (if any) be?

推荐答案

TCP / IP协议栈的分层架构的方法是在各层分配工作。如果你有更少的层，你也会有修改其他相邻层以便由缺席层执行的任务由别人完成。

将两层只有系统需要一个非常复杂的层（你的情况一切其他层）。这是不实际的。

The layered architecture approach of TCP/IP protocol stack is for Distribution of work at respective layers. If you have fewer layers, you will also have to modify other adjacent layers so that the task performed by absent layers are performed by someone else.

Making a two layer only system would need a very complex layer (in your case "Everything Else" layer). which is not practical.

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