15. A cable television service provider installs a physical medium that transmits broadband signals over long distances. Which type of cable is typically used in this situation?
Answer: C
Coaxial cable is typically used in this situation.
Coaxial cable is the standard type of cable used by cable television service providers to transmit broadband signals over long distances due to its excellent shielding and high bandwidth capabilities.
A) Twisted pair
Twisted pair cables are primarily used for telephone and local area network (LAN) connections. While they can transmit data, they lack the bandwidth and shielding required for long-distance broadband signal transmission that coaxial cables provide.
B) Cat7
Cat7 cables are a type of twisted pair cable designed for high-speed networking within short distances, typically in structured cabling for data centers or commercial buildings. They are not suitable for long-distance broadband signal transmission like coaxial cables.
C) Coaxial
Coaxial cables are specifically designed for transmitting cable television and broadband internet signals over long distances. They feature a central conductor, insulation, a grounding shield, and an outer cover that provides excellent protection against interference, making them the optimal choice for this application.
D) Cat5e
Cat5e cables are an enhanced version of twisted pair cables that support higher speeds and reduced crosstalk, mainly used for networking. However, they are not designed for long-distance broadband transmission like coaxial cables, limiting their effectiveness in this scenario.
Conclusion
Coaxial cable is the most suitable option for transmitting broadband signals over long distances due to its design and shielding capabilities, which allow for high bandwidth and reduced interference. Other options, such as twisted pair, Cat7, and Cat5e cables, do not meet the requirements for long-distance transmission, making them less effective for this purpose.