tcp ip ports and protocols

must use the application-layer protocol.There are many application layer protocols, such as HTTP, FTP, Telnet, etc., and you can define the application layer protocol yourself.The web uses the HTTP protocol as an application-layer protocol to encapsulate HTTP text information and then send it to the network using TCP/IP as the Transport layer protocol. ”And what

application layer."If you want to make the transferred data meaningful, you must use the application-layer protocol.There are many application layer protocols, such as HTTP, FTP, Telnet, etc., and you can define the application layer protocol yourself.The web uses the HTTP protocol as an application-layer protocol to encapsulate HTTP text information and then send it to the network using TCP/

must use the application-layer protocol.There are many application layer protocols, such as HTTP, FTP, Telnet, etc., and you can define the application layer protocol yourself.The web uses the HTTP protocol as an application-layer protocol to encapsulate HTTP text information and then send it to the network using TCP/IP as the Transport layer protocol. ”And what

The network is divided from bottom up into the physical layer, data link layer, network layer, transmission layer, Session Layer, presentation layer and application layer. Through preliminary understanding, I know that the IP protocol corresponds to the network layer, and the TCP protocol corresponds to the transmission layer, while the HTTP protocol corresponds to the application layer. In essence, the thr

Two days ago, I arranged for a customer to provide services. I encountered an error where ODBC could not connect to SQL Server 2000. The following error may be detected: One possibility is the SQL bug. The two may be the English version of the installation, which may cause problems during the localization process. To solve this problem, follow the steps on the Microsoft Official Website: In SQL Server 2000 custom installation, if only the TCP/

as, is used for file transfer. POP3 (Post Office Protocol, version 3, Post Office Protocol), used for receiving emails. SMTP (Simple Mail Transfer Protocol) is used to send emails. Telnet (teletype over the network, network telex), through a terminal (terminal) login to the network. SSH (Secure Shell, used to replace Telnet with poor security) for encrypted secure login. Protocol running on UDP: BOOTP (Boot

TPC/IP Protocol is a Transport layer protocol, which mainly solves how data is transmitted in the network, and HTTP is the application layer protocol, which mainly solves how to wrap the data. regarding the relationship between TCP/IP and HTTP protocol, the network has a relatively easy to understand: "When we transmit data, we can only use the (Transport Layer)

1.UDP Brief Introduction UDP is a transport layer protocol, and TCP protocol is in a hierarchy, but unlike the TCP protocol, UDP protocol does not provide timeout retransmission, error retransmission and other functions, that is, it is unreliable protocol. 2.UDP Protocol Header 2.1.UDP Port number Because a lot of software needs to use the UDP protocol, the UDP protocol must be used to differentiate the pa

comply with the OSI Layer-7 Reference Model. The traditional Open System Interconnection Reference Model is a layer-7 abstract reference model of communication protocols, where each layer executes a specific task. This model aims to make various hardware communicate with each other at the same level. These seven layers are: physical layer, data link layer, network layer, transmission layer, Session Layer, presentation layer and application layer. The

A simple understanding of HTTP-TCP/IP and tcpip 1. What is TCP/IP? If you want to know a person, you can chat from the group where he belongs. Our HTTP protocol is a member of the TCP/IP protocol family. We understand the status

Today, let's talk about the standard Internet communication protocol-TCP/IP protocol.This part of content may not be very understandable and abstract. It is a tough nut for beginners, but since it is a beginner, don't let everyone have any mental burden. No one is a genius, right? I will try my best to give you more examples for your understanding!1. Basic ContentTCP/IPTransmission Control Protocol/Internet

"When transmitting data, we can only use the (Transport Layer) TCP/IP protocol. However, without the application layer, we cannot identify the data content, to make the transmitted data meaningful, you must use the application layer protocol. There are many application layer protocols, such as HTTP, FTP, and telnet. You can also define the application layer proto

I. TCP/IP Beijing and introductionIn the 70 's, with the development of computer technology, computers users realized that it was necessary to connect computers from all over the world to play a more important role in computer. But the simple connection is not enough, because the computer can not communicate. Therefore, the design of a common "language" to communicate is necessary to be less, then the

, you must use the application-layer protocol.There are many application layer protocols, such as HTTP, FTP, Telnet, etc., and you can define the application layer protocol yourself.The Web uses the HTTP protocol as an application-layer protocol to encapsulate HTTP text information and then send it to the network using TCP/IP as the Transport layer protocol. "And

, they define the Packet Exchange methods and their meanings. A group of protocols contain the structure of the packet and how to parse the information contained in the packet, the Protocol is generally used to solve a specific problem. For example, Hypertext Transfer Protocol (HTTP) is used to solve the problem of transferring hypertext objects between servers, these hypertext objects are created and stored on the server and visualized by the web bro

1 , standard network hierarchyThe network is divided from bottom to top: physical layer, Data link layer, network layer, transport layer, Session layer, presentation layer and application layer.The following diagram attempts to show the location of the different TCP/IP and other protocols in the original OSI model: 7 Application Layer such

What is TCP/IP? TCP/IP is a communication protocol for computers connected to the Internet. TCP/IP refers to the Transmission Control Protocol/Internet Protocol (TRansmissionCOntrolPRotocol/INternetPRotocol ).

overturn. My ideal is to be a knowledgeable person with a wealth of professional knowledge, enough to deal with problems at work. In addition to work, you can read books to improve your temperament. 1. what is TCP/IP? If you want to know a person, you can chat from the group where he belongs. Our HTTP protocol is a member of the TCP/

use the application-layer protocol.There are many application layer protocols, such as HTTP, FTP, Telnet, etc., and you can define the application layer protocol yourself.The web uses the HTTP protocol as an application-layer protocol to encapsulate HTTP text information and then send it to the network using TCP/IP as the Transport layer protocol.　And what we us

TCP/IP Study Notes (1) I. TCP/IP structure:TCP/IP is a layer-4 protocol with the following structure:1. Application Layer: various applications and protocols, such as HTTP and FTP.2. Transport Layer: