On July 7, at the Third China IPv6 Innovation Development Conference, Wu Jianping, Academician of Tsinghua University and Deputy Director of the Expert Committee for Promoting IPv6 Large-scale Deployment and Application, delivered a keynote speech titled “The Important Content of IPv6 Innovation Development: Self-Reliance in Core Technologies for the Next Generation Internet.” 2024 marks the … Read more
/ Network Layered Structure / Consider the simplest case: communication between two hosts. At this point, only a single network cable is needed to connect the two, specifying their hardware interfaces, such as both using USB, 10v voltage, and 2.4GHz frequency. This layer is the physical layer, and these specifications are the physical layer protocol. … Read more
Introduction PLC (Programmable Logic Controller) was initially just a digital logic controller with a microprocessor for automation control. With the development of programmable logic programs, PLCs have become widely used in the industrial control field, evolving into programmable automation devices similar to compact computers, replacing the numerous relays and counters in automated control systems. PLC … Read more
For laymen, you can simply understand ports as the exit for communication between a computer and the outside world. However, in network technology, ports generally have two meanings: (1) Ports in Hardware Devices Such as interfaces in switches and routers used to connect other devices. (SC ports, etc.) (2) Ports in TCP/IP Protocols Such as … Read more
Search on WeChat Technical Training There are various communication methods between Siemens WINCC and Siemens PLC. Below are two commonly used communication methods. 1. Using a standard network card to communicate with the PLC via TCP/IP. The prerequisite for connecting WINCC with the PLC system through Ethernet is that the PLC system is configured with … Read more
Nowadays, whether in security engineering or weak current engineering, the connection with networks is becoming increasingly close. Among the basic knowledge of networks, the ping command is the most frequently used in projects. Generally, we only use its basic functions. Today, let’s take a detailed look at the 7 basic uses of the Ping command, … Read more
A Comprehensive Explanation of Computer Network Principles Introduction Hello everyone, I am Tai Dou Xian Ruo Ru, a content creator focused on explaining technology in simple terms. This time I will share knowledge related to the principles of computer networks. I believe the content of this article is already very easy to understand, and I … Read more
ClickRead Original Article to view article details
1. Overview of Cybersecurity 1.1 Definition Information Security: The technical and managerial security measures established and adopted for data processing systems, protecting computer hardware, software, and data from accidental and malicious destruction, alteration, and disclosure. Cybersecurity: Prevent unauthorized users from accessing information Prevent unauthorized attempts to destroy or modify information 1.2 Characteristics of Information Security … Read more
Internet Internet The Internet is the largest network in the world today, known as the “network of networks”. It is a massive network that interconnects all other networks. The components of the Internet: Edge part: Host Core part: A large number of networks and the routers connecting these networks (this router is not the one … Read more