application layer protocols in computer networks

Directory 1. HTTP protocol 2. FTP protocol 3. TELNET protocol 4. NFS Protocol 1. HTTP protocol Application Layer ProtocolHTTP is the core of Web.HTTP is implemented in Web client programs and server programs. client programs and server programs running on different systems communicate with each other by exchanging HTTP messages. The HTTP Protocol defines the data format so that the server and client ca

program (customer service sends the number of operations, operands, operators, and the server receives the data to end to the client): The customer service side is connected to the server side and passes the operands in 1-byte integers as a number. Each operand that the customer service side passes to the server is a 4-byte integer data. After each operand is passed, the operator is then passed, and the operator occupies 1 bytes. The server returns the result of the operati

quality assurance.Iv. Application of ATM technology in computer communication networks: LANE1. Concept of ATM LANEAs the name suggests, LANEEmulated LAN is used to simulate a LAN on an ATM network. The LANE Protocol defines a mechanism to simulate an IEEE 802.3 Ethernet or 802.5 ring network. The LANE Protocol defines the same interface as the service provided b

process of obtaining the IP address corresponding to the host name through the host name is called domain name resolution (or host name resolution ). The DNS protocol runs on the UDP protocol and uses the port number 53. HTTP: This is the most widely used protocol. It is often referred to as "Hypertext Transfer Protocol ". When browsing the Web page online, you have to open port 80 on the computer that provides web page resources to provide services

mask, so that it is convenient to obtain the IP address of the network address, and do not need to find the routing table. A subnet mask is an important property of a network or a subnet. In each item of the router's routing table, in addition to giving the destination network address, you must also give the subnet mask for the network. If a router is connected to two subnets, two IP addresses and subnet masks are given 、、。 Forwarding by using subnet time group

sent by this system has a strong anti-interference capability, and its spectrum is similar to white noise, which is not easy to be detected by enemies. Each bit time is divided into m short intervals, called Chip) Width Access Technology XDSL technology Category: ADSL(Asypolicric Digital Subscriber Line) Asymmetric Digital user line HDSL(High speed DSL) high speed digital user line SDSL(Single-line DSL) Peer digital user line VDSL(Very high speed DSL) extremely high-speed dig

. Processes of different systems communicate with each other by exchanging packets across computer networks. It can be divided into client processes and server processes. In a given communication session between processes, the process initiating communication is a client process, and the process waiting for connection is a server process. A process sends and receives packets over the network through a softw

networks (application programming Interface,api). The application developer can control everything on the application layer of the socket, but there is little control over the transport side of the socket.The application develope

The application layer of Computer Network 1. Introduction The application layer serves as the highest level of interaction with users, and its tasks directly serve users' application processes. The specific content of the