What is an international network line? What are thet types of network cables?

International network lines refer to the physical connections between computer networks in different regions. They are realized through submarine optical cable, satellite link, optical cable, etc., and carry the transmission of Internet data.
The classification of network cables is mainly based on their purpose and transmission medium. Here are some common categories of network cables:
Ethernet cable: Ethernet cable is the most common and widely used type of network cable used for connecting computers and network devices in a local area network (LAN). Common Ethernet cables include:
Copper cables: including twisted pair cables (such as Cat5, Cat6, Cat7) and coaxial cables (such as RG-6, RG-59).
Fiber optic: 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 internal conductor, insulation layer, external conductor, and external insulation layer, used for transmitting video, data, and signals.
Fiber optic cable: Fiber optic cables use optical fibers as transmission media to transmit data through optical signals. It has advantages such as high bandwidth, low latency, 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 synchronously transmit digital audio and video signals. They are commonly used for connecting professional audio and video equipment, such as digital audio workstations and audio and video mixers.
Serial line: A serial line is used for serial data transmission, sending data bits bit by bit. Common serial lines include RS-232, RS-422, and RS-485, which are used to connect devices such as computers, modems, printers, etc.
Telephone line: A telephone line is used to transmit telephone signals, connect telephone equipment and telephone networks. Common types of telephone lines include regular telephone lines (RJ-11) and ISDN lines.
It should be noted that the classification of network cables may be subdivided based on different standards and technologies, and new types of network cables may also emerge with the development of technology and updates to standards. Therefore, when selecting and using network cables, it is recommended to refer to relevant standards and specifications, and choose the appropriate type of network cable according to actual needs.