What are international network lines? What are the categories of network lines?

International network lines are the physical lines that connect computer networks between different and regions. They are made possible by means of undersea fiber optic cables, satellite links, fiber optic cables, etc. and carry the transmission of international internet data. Network cables are categorized mainly based on their purpose and transmission medium. The following are some common classifications of network cables:Ethernet Cables:Ethernet cables are the most common and widely used type of network cables for connecting between computers and network devices in a local area network (LAN). Common Ethernet cables include: Copper: including twisted pair (e.g. Cat5, Cat6, Cat7) and coaxial cable (e.g. RG-6, RG-59). Optical fiber: including single-mode fiber and multi-mode fiber, used for long distance and high-speed data transmission. Coaxial cable: Coaxial cable is commonly used in cable television networks and some specific communication systems. It consists of an inner conductor, an insulating layer, an outer conductor and an outer insulating layer, and is used to transmit video, data and signals. Fiber optic cable: fiber optic cable uses optical fiber as a transmission medium to transmit data through optical signals. It has the advantages of high bandwidth, low delay and anti-interference, and is widely used for long distance, high speed and high capacity data transmission. Coaxial Sync Lines: Coaxial Sync Lines are used to synchronize digital audio and video signals. They are commonly used to connect professional audio and video equipment such as digital audio workstations and audio/video mixers. Serial Lines: Serial lines are used for serial data transmission, sending data bit by bit. Common serial lines include RS-232, RS-422 and RS-485, which are used to connect computers, modems, printers and other devices. Telephone Lines: Telephone lines are used to transmit telephone signals and connect telephone equipment to the telephone network. Common types of telephone cables include regular telephone cables (RJ-11) and ISDN cables. It is important to note that the categorization of network cables may be subdivided according to different standards and technologies, and new types of network cables may appear as technology develops and standards are updated. Therefore, when selecting and using network cables, it is recommended to refer to the relevant standards and specifications and select the appropriate type of network cable according to actual needs.

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