[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
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
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
Click the blue text Follow us In daily life, when shopping online or mailing an item, we need to fill in both parties’ addresses, contact information, whether insurance is needed, and other details. Additionally, the courier company may have other regulations to be added to the purchase and mailing details. The purpose of this is … 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
Introduction Network Protocols When we connect to the internet using our mobile phones, we utilize many network protocols. Starting from the connection to WiFi, we use the 802.11 (i.e., WLAN) protocol to connect to the network; the phone automatically obtains network configuration using the DHCP protocol, and only after getting the configuration can the phone … Read more
Source:Network Editor | Ning Ning Quality Article 741 Words 3 Minutes ARP: Address Resolution Protocol (ARP), a TCP/IP protocol that obtains the physical address based on the IP address. CLNP: Connectionless Network Protocol (CLNP). CRC: Cyclic Redundancy Check (CRC), a hash function that generates a short fixed-length checksum based on network packets or computer files, … 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
Click the blue text above to follow us Resource Release Huawei Certification Beginner to Advanced Practical Course ↓ Scan to watch practical videos ↓ IPv4 and IPv6 Headers IP is the core protocol in the TCP/IP protocol suite, and all TCP, UDP, ICMP, and IGMP data is transmitted via IP datagrams. IP provides a best-effort, … 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