Switch 处理的是 Data Link Layer 的 Header,也就是说会去查看 mac address,也就是网卡的地址(主机接到交换机一定有一个网络口,里面会有一个网卡,现在的笔电一般网卡都是内置的),根据 mac address 就会知道 package 发往哪边。mac address 是网卡对网卡,而 IP 是主机对主机。 Transport Layer(传输层) 每一...
ComputerNetworks ApplicationLayer PaoloCosta costa@cs.vu.nl http://.cs.vu.nl/~costa VrijeUniversiteitAmsterdam June18,2008 PaoloCosta07-ApplicationLayer1/48 ApplicationLayer Now,wewillstudysomereal networkapplications: DomainNameSystem ElectronicMail ...
《Computer Networks (fifth edition)》第七章学习小结 第七章介绍了应用层(The Application Layer),总共有六个小节,分别是:DNS—域名系统(DNS—The domain name system)、电子邮件(Electronic mail)、万维网(The world wide web)、流音频与视频(Streaming audio and video)、内容分发(Content delivery)、总结(Summa...
Computer-Networks(计算机网络课件)ComputerNetworksApplicationLayer ProfPriscillaRamsamyRoom405 2021/6/7 1 ProtocolLayers •Networksarecomplex!•many“pieces”:–hosts–routers–linksofvarious–media–applications–protocols–hardware,software 2021/6/7 2 LayeredArchitecture Whendealingwithcomplexsystems:•...
1、a,1,Computer Networks Application Layer,Prof Priscilla Ramsamy Room 405,a,2,Protocol Layers,Networks are complex! many “pieces”: hosts routers links of various media applications protocols hardware, software,a,3,Layered Architecture,When dealing with complex systems: explicit structure allows ...
路由器是网路层(Layer 3)的设备,但它必须也要实现Layer 2 的协议。因为第三层的服务,需要第二层的实现(第3层)的功能。 4.2 Virtual Circuit and Datagram Networks 虚拟电路工作在网络层,由于网络层实现的是host-to-host服务,这种host-to-host,即可以是有连接的,又可以是无连接的。其中无连接的就是Datagram ...
Internet layer.The internet layer is responsible for logical addressing, routing and packet forwarding. It primarily relies on the IP protocol and the Internet Control Message Protocol (ICMP), which manages addressing and routing of packets across different networks. ...
However, you would take it to the post office first to be shipped off.Carrying the package to the post officeis what the application layer does in networks, except thatit carries messages to the transport layer! Network Application Architectures ...
Chapter 1 Computer Networks and the Internet Chapter 2 Application Layer Chapter 3 Transport Layer Chapter 4 Network Layer - data plane Chapter 5 Network Layer - control plane Chapter 6 The Link Layer Chapter 7 Wireless and Mobile Networks ...
The proposed method for communications between computer networks at the application layer implies receiving messages from the external network by a data internetworking computer, storing the messages in the random-access memory unit of the internetworking computer, and transmitting the messages within the ...