What is the network cable generally?

　　Network cable generally refers to the tranSMission medium used for computer network communication. There are many types, each of which has its specific application scenarios and performance characteristics. Here are some common network cable types:

　　First, Ethernet cable (Ethernet Cable)

　　Ethernet cable is the most commonly used type of network cable, also known as RJ-45 cable or CAT (Category) cable. It is mainly used to connect computers, routers, switches and other network devices together. According to the transmission speed and performance, Ethernet cable can be divided into various specifications, such as CAT5, CAT5e, CAT6, CAT6a, CAT7, etc.

　　CAT5: This is an early Ethernet cable specification that supports 100Mbps transfer rates and is suitable for a variety of network types such as Ethernet and Token Ring. However, due to its relatively low performance, it has now been gradually phased out.

　　CAT5e: This is an improved version of CAT5, adding support for Gigabit Ethernet and improved anti-interference capabilities. The CAT5e cable is one of the most common Ethernet cables on the market today.

　　CAT6: CAT6 network cable supports transmission rates up to 1Gbps, and has better anti-interference ability and lower signal attenuation. It is suitable for occasions requiring high-speed data transmission and long-distance transmission.

　　CAT6a: CAT6a network cable further improves the transmission rate and anti-interference ability, supports 10Gbps transmission rate, and has better shielding effect. It is suitable for network environments with higher bandwidth and performance requirements.

　　CAT7: The CAT7 cable is the latest generation of Ethernet cables that support transmission rates up to 10Gbps with higher shielding and lower signal attenuation. It is suitable for applications with high performance requirements such as data centers and enterprise networks.

　　Second, fiber optic cable (fiber optic cable)

　　Fiber optic network cables use optical signals to transmit data and have the advantages of high-speed, long-distance transmission and anti-interference. It is widely used in scenarios that require higher bandwidth and long-distance transmission, such as enterprise networks, data centers, etc. Fiber optic network cables are composed of fiber cores, cladding and protective sleeves. According to the different ways of optical signal generation, they can be divided into single-mode fibers and multi-mode fibers.

　　Third, coaxial cable (Coaxial Cable)

　　Coaxial cable is a type of cable widely used in cable TV and broadband networks. It consists of an internal conductor, an insulating layer, an outer conductor and an outer insulating layer, which are used to transmit high-frequency signals. Coaxial cable is divided into thin and thick cables, which can well block external electromagnetic interference and improve communication quality.

　　Four, parallel cable (Parallel Cable)

　　Parallel cable is a type of network cable used to connect external devices such as printers and computers to transmit data. It typically uses a DB25 or Centronics interface and is suitable for short-distance data transmission.

　　Other network cable types

　　In addition to the common network cable types mentioned above, there are also some other types of network cables, such as Twisted Pair Cable, Shielded Twisted Cable, and Shielded Twisted Cable. Pair, STP), etc. These cable types have unique application value in some specific situations.

　　In summary, there are many types of network cables, each with its specific application scenarios and performance characteristics. When selecting a network cable, you need to choose the appropriate network cable type according to actual needs and scenarios.