PLC and DCS are similar in some aspects, but the differences are quite obvious, as reflected in the following several aspects. 1. DCS is a “Distributed Control System”, while PLC (Programmable Logic Controller) is merely a control “device”; the distinction lies between “system” and “device”. A system can achieve the functions and coordination of any … Read more
With the widespread application of Internet of Things (IoT) technology, the number of IoT devices and users has surged, leading to immense pressure on network transmission bandwidth, task processing delays, and cloud computing loads. Traditional cloud computing center network architectures cannot meet the heterogeneous, low-latency, and densely packed network access and diverse service demands. In … Read more
Using Telnet for HTTP Interaction Click the blue text to follow us Tell me and I forget. Show me and I remember. Involve me and I understand. 1 Experiment Objective This article will use Telnet to simulate HTTP requests. This experiment takes “gaia.cs.umass.edu/wireshark-labs/HTTP-wireshark-file1.html” as an example. 2 Experiment Steps Step One: Open Telnet Service Control … Read more
1. The TPC/IP protocol is a transport layer protocol, primarily addressing how data is transmitted over the network, while HTTP is an application layer protocol, mainly focused on how to package data. Regarding the relationship between TCP/IP and HTTP protocols, there is a relatively easy-to-understand introduction: “When we transmit data, we can use only the … Read more
Click the blue text above to follow us Every website has a unique public IP address that anyone can access from anywhere. Internet Protocol (IP) needs no introduction — we use it every day. Even if you don’t use it directly, when you type website-name.com in your browser, it looks up the IP address of … Read more
Nowadays, wireless routers have penetrated into thousands of households, and WiFi products are emerging endlessly. So, are we familiar with this relatively professional network product? Below are five industry insights that will help you understand that the functions heavily advertised by router manufacturers are not quite as they seem. 1. WiFi Does Not Mean Wireless … Read more
01 — WiFi Penetration: The “Heavenly Question” Since WiFi has become the third essential need after water and electricity, I often get asked a classic question: My router has so many antennas and claims to be a powerful wall-penetrating king, looking impressive, but why does it lose signal after just a few steps? WiFi Penetration: … Read more
In today’s article, let’s talk about 5G LAN.If you have a little understanding of communication technologies, you’ll find that 5G LAN is actually a very interesting concept.Everyone should be familiar with 5G; it is the evolution of 4G and is currently our latest mobile communication technology.As for LAN, everyone should be even more familiar with … Read more
What is WLAN? The Wireless Local Area Network (WLAN) is a type of wireless computer network that connects two or more devices to form a Local Area Network (LAN) using wireless channels instead of wired transmission media. Typical deployment scenarios include homes, schools, campuses, or corporate office buildings.WLAN is a network system, while the commonly … Read more
Origin of WiFi Name The term Wi-Fi is often mistakenly thought to refer to Wireless Fidelity, similar to the historical classification of audio equipment: long-term high fidelity (adopted since 1930) or Hi-Fi (adopted since 1950). Even the Wi-Fi Alliance itself frequently uses the term “Wireless Fidelity” in press releases and documents; in fact, the term … Read more