Which statement about Category 1 and 2 cables is true?

Which statement about Category 1 and 2 cables is true?

• A. Not used for installation
• B. They are the primary data cabling today
• C. They are widely used in modern Ethernet
• D. They have high impedance per pair

Answer: (A)

Category 1 and Category 2 cables are legacy copper cabling that were used in very old networks and telephone installations, not in today’s data systems. Modern Ethernet relies on higher-category cables (like Cat 5e, Cat 6, Cat 6a, etc.) designed for 100-ohm twisted-pair transmission and higher speeds. Because of their limited performance, these older categories are not used for new installations. That’s why the statement about not being used for installation is the accurate one. The other options imply they’re still the primary data cabling, widely used in modern Ethernet, or defined by high impedance in a way that isn’t relevant to their current status, which doesn’t fit how these cables are viewed today.

Category 1 and Category 2 cables are legacy copper cabling that were used in very old networks and telephone installations, not in today’s data systems. Modern Ethernet relies on higher-category cables (like Cat 5e, Cat 6, Cat 6a, etc.) designed for 100-ohm twisted-pair transmission and higher speeds. Because of their limited performance, these older categories are not used for new installations. That’s why the statement about not being used for installation is the accurate one. The other options imply they’re still the primary data cabling, widely used in modern Ethernet, or defined by high impedance in a way that isn’t relevant to their current status, which doesn’t fit how these cables are viewed today.