How do you think of the six types of network cables?

　　To determine whether the six types of network cables are shielded or unshielded, the following aspects can be observed:

　　First, check the outer skin logo.

　　The outer skin of the six types of network cables is usually printed with relevant information about the network cable, including brand, type, etc. For shielded and unshielded network cables, the logos on the outer skin will be different.

　　Unshielded network cable: The word "UTP" is usually printed on the outer skin to indicate that the network cable is unshielded. For example, "CAT6 UTP" indicates that this is a six-class unshielded network cable.

　　Shielded network cable: The outer skin will be printed with the words "STP" or "SFTP" to indicate that the network cable is a shielded type. For example, "CAT6 STP" means that this is a Category 6 shielded network cable.

　　Second, observe the internal structure

　　In addition to checking the outer skin logo, you can also determine whether it is a shielded cable by observing the internal structure of the cable.

　　Unshielded network cable: The internal structure is relatively simple, usually including only 8 network cables (4 pairs of twisted pairs) and a layer of insulating outer rubber.

　　Shielded network cable: The internal structure is more complicated. In addition to 8 network cables and insulating outer rubber, a layer of metal material (such as aluminum foil) or metal mesh will be added as a shielding layer. Some double shielded network cables will also add a layer of metal mesh in addition to the aluminum foil layer. In addition, there will be a ground wire (aluminum wire) inside the shielded network cable to introduce current into the ground and improve anti-interference ability.

　　III. Understanding application scenarios

　　The choice of shielded and unshielded network cables also depends on the specific application scenarios and requirements.

　　Shielded network cable: It has stronger anti-interference ability and is suitable for applications with high network performance requirements such as data centers, industrial control environments, and medical institutions. In these environments, external electromagnetic interference (EMI) and radio frequency interference (RFI) may be more serious, and shielded network cable can ensure the stability and reliability of data transmission.

　　Unshielded network cable: Although it can also meet the general data transmission needs, its anti-interference ability is relatively weak in a strong electromagnetic interference environment. Therefore, unshielded network cable is more suitable for general home, office and other environments, as well as occasions with high cost requirements.

　　In summary, by observing the outer skin logo, internal structure, and understanding the application scenarios and requirements, we can more accurately determine whether the six types of network cables are shielded or unshielded. In the actual purchase and use process, it is recommended to choose the appropriate network cable type according to specific needs to ensure the stability and reliability of network transmission.