Hello everyone. This is a new series. In this series, I will introduce you to concepts related to computer networking.Computer network technology is a mandatory subject for the spring college entrance examination, highlighting the importance of this field. Don’t be afraid. I will guide you to gradually understand it. Over time, you will learn this … Read more
1. OSI Seven-Layer Model Core Idea: Layering and Encapsulation ·Layering: The complex communication process is divided into multiple smaller, more specialized layers. Each layer utilizes the services provided by the layer below and provides services to the layer above. ·Encapsulation: When sending data, the data moves from the upper layer to the lower layer, with … Read more
To become a qualified interface testing engineer, the study of HTTP/HTTPS protocols must combine “theory + practical application”, which means understanding the essence of the protocol and applying it to real interface testing scenarios (such as request validation, response assertions, and troubleshooting). At the same time, the OSI seven-layer network model is the foundation for … Read more
Overview of the HTTP Protocol OSI Model Open Systems Interconnection Model (English: OpenSystemsInterconnection Model, abbreviated as OSI; commonly referred to as OSI Model) is a conceptual model proposed by the International Organization for Standardization, which attempts to create a standard framework for interconnecting various computers into a network worldwide. It is defined in ISO/IEC 7498-1. … Read more
One-timePaymentto Join,Long-termFree Tutorials,NoPaid Tutorials. JoinWeChat GroupReply to Public Account:WeChat Group;QQ Group:460500587 Tutorial List See the bottom menu of the public account | Recommended Books at the Bottom of This Article Public Account: Computer and Network Security ID: Computer-network 1. Overview of TCP/IPWhen discussing the history of TCP/IP, one cannot avoid mentioning the history of the … Read more
Introduction Click the “Shenzhen Network and Information Security Industry Association” official account below to follow and set it as aStarred. Reply in the background with [Technical] to apply for joining the technical exchange group in the network security industry. OSI and TCP/IP are very basic yet extremely important knowledge; many knowledge points are interconnected based … Read more
1. Overview of Computer Networks 1.1 Classification of Computer Networks Based on the scope of the network: Wide Area Network (WAN), Metropolitan Area Network (MAN), Local Area Network (LAN); Based on the users of the network: Public networks, Private networks. 1.2 Hierarchical Structure of Computer Networks Comparison of the TCP/IP four-layer model and the OSI … Read more
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Network failures are one of the most common challenges faced by operations engineers. A single network outage can lead to tens of thousands of dollars in business losses, and the ability to quickly locate and resolve issues often determines the value of an operations engineer. This article shares my accumulated experience in network troubleshooting within … Read more
Interpretation of Bluetooth Core Protocol v6.11. Bluetooth FrameworkThe Bluetooth protocol stack consists of the host, HCI to the controller, and finally to the RF transmitter.The following diagram shows the complete structure of the Bluetooth controller, which has been basically formed since Bluetooth 4.0:The controller is further divided into BR/EDR, AMP, and LE. Among them, AMP … Read more