No matter how one’s mindset changes, technology remains the most powerful weapon in the hands of network engineers! Today’s technical points are explained from small details, which can help beginners solve basic literacy issues and allow experienced network engineers to “review and learn anew”. Let’s take a look together~ 01 LAN (Local Area Network) Typically … Read more
Author: Shui De Original: http://blog.csdn.net/jxh_123/article/details/40316081 1. OSI, TCP/IP, and Five-Layer Protocol Architecture OSI Layers (7 layers): Physical Layer, Data Link Layer, Network Layer, Transport Layer, Session Layer, Presentation Layer, Application Layer. TCP/IP Layers (4 layers): Network Interface Layer, Internet Layer, Transport Layer, Application Layer. Five-Layer Protocol (5 layers): Physical Layer, Data Link Layer, Network Layer, … Read more
2024 Tianjin Adult Higher Education Entrance Exam Computer Preparation Plan Summary of Chapter Key Points, Please Click Below 👇 [Adult Higher Education Preparation] Key Points for Chapter One of Computer Fundamentals [Adult Higher Education Preparation] Key Points for Chapter Two of Computer Fundamentals [Adult Higher Education Preparation] Key Points for Chapter Three of Computer Fundamentals … Read more
Directory Some friends asked: Why can’t we go online without configuring an IP address? What is the IP protocol? This starts with the TCP/IP protocol; the Internet uses the TCP/IP protocol, among which the IP protocol is one of the most important protocols. The IP protocol sends data packets to the destination host based on … Read more
This article is a translation of “Let’s code a TCP/IP stack, 1: Ethernet & ARP”. The translation process is also a learning experience for myself. Writing your own TCP/IP stack may seem like a daunting task. In fact, TCP has accumulated many specifications over its more than thirty years of life. However, the core specifications … Read more
[Question:] What exactly are the three protocols: NetBEUI, IPX/SPX, and TCP/IP? Especially the first two, sometimes they are installed and sometimes not. Why is that? What are the differences and unique features? When must they be installed? [Answer:] Many users have asked this question. Here, I have researched and compiled relevant information to provide a … Read more
Image source: Internet In the vast world, humans convey information and communicate with each other through language and actions. Just as communication occurs between people, the interconnection of computers also requires adherence to certain rules, known as network protocols. The protocol family currently adopted by the global Internet is the TCP/IP protocol family. IP is … Read more
Fact One: File Descriptor Limits Friends who write network server programs in Linux surely know that each TCP connection occupies a file descriptor. Once this file descriptor is exhausted, a new connection attempt will return the error “Socket/File: Can’t open so many files”. At this point, you need to understand the operating system’s limit on … Read more
Search on WeChat Technical Training The ping command is the most frequently used network command in projects, and we usually use its basic functions. Today, let’s take a detailed look at the 7 basic uses of the Ping command. 1. Basic of Ping Command 2. Usage of ping -t 3. Usage of ping -a 4. … Read more
In computer networks, to share resources and exchange data in an orderly manner, some pre-agreed rules must be followed. These standards or agreements established for data exchange in the network are called network protocols, abbreviated as protocols. To enable efficient transmission between computers, a layered approach is adopted, similar to how people collaborate to complete … Read more