Source: https://juejin.cn/user/3931509313252552/postse In communication and IT work, networking is essential, and the most important protocol in the network is TCP. Whether in actual work or in written exams and interviews, you can’t escape TCP. I have read documents related to TCP in the RFC, examined the source code related to TCP in Linux, and looked … Read more
In network technology, a port generally has two meanings: first, it refers to the physical interface (hardware) between computers and other devices. For example, interfaces like RJ-45 ports and SC ports used to connect other network devices such as switches and routers. Second, it refers to the logical virtual ports (software), which typically refer to … Read more
Fundamentals of Networking 1、OSI（Open System Interconnection）Open System Interconnection Model Seven-layer model: Layer 1: Physical Layer : Transmission of raw bit streams over mechanical, electronic, and timing interfaces communication channels Layer 2: Data Link Layer: Physical addressing, while transforming the raw bit stream into logical transmission lines Layer 3: Network Layer: Controls the operation of subnets, … Read more
4 Network Layer IP The transmission of packets mainly goes through Application Layer, Transport Layer, Network Layer, and Link Layer. Following the explanation of the application layer HTTP and Transport Layer TCP, the application layer data is encapsulated by the transport layer and then needs to be encapsulated by the network layer. The core task … Read more
1. Introduction to TCP/IP The IP protocol is the network layer, the TCP protocol is the transport layer, the HTTP protocol is the application layer, and socket is the code encapsulation and application of the TCP/IP protocol. TCP/IP mainly addresses how data is transmitted over the network, while HTTP mainly deals with how to package … Read more
1. TCP/IP Protocol Model TCP/IP Protocol (Transmission Control Protocol/Internet Protocol), includes a series of network protocols that form the foundation of the internet and is the core protocol of the Internet. The reference model based on TCP/IP divides the protocols into four layers: Network Interface Layer, Internet Layer, Transport Layer, and Application Layer. Exam Tips: … Read more
This article organizes knowledge related to the TCP-IP protocol through two diagrams. The TCP communication process includes three steps: establishing a TCP connection channel, transmitting data, and disconnecting the TCP connection channel. As shown in Figure 1, a schematic diagram of the TCP communication process is provided. Figure 1 TCP Three-Way Handshake and Four-Way Disconnect … Read more
TCP/IP is not a single protocol, but a collective term for a suite of protocols. It includes the IP protocol, ICMP protocol, and TCP protocol. 1 Here are a few key points to note: Internet Address: This is the IP address, generally consisting of the network number + subnet number + host number.Domain Name System: … Read more
Author: wuchao226 Link: https://www.jianshu.com/p/8e35c3883035 OSI Seven-Layer Model OSI adopts a layered structured technology, which is divided into seven layers: Physical Layer, Data Link Layer, Network Layer, Transport Layer, Session Layer, Presentation Layer, Application Layer. TCP/IP Model The OSI model is relatively complex and academic, so the TCP/IP model we actually use is divided into 4 … Read more
From: Non-Professional Class TCP/IP Concepts TCP/IP (Transmission Control Protocol/Internet Protocol) is a suite of protocols that enables information transmission across multiple different networks. The TCP/IP protocol does not refer solely to the TCP and IP protocols, but to a suite of protocols including FTP, SMTP, TCP, UDP, IP, etc. It is the fundamental protocol of … Read more