ESA Certified Alarm Technician Practice Exam

Which type of wire is known for offering a low cost and highly reliable transmission method?

1. Coaxial cable

2. Twisted pair wire

3. Fiber optic wire

4. Shielded twisted pair

The correct answer is: Twisted pair wire

Twisted pair wire is recognized for its low cost and highly reliable transmission method, particularly in telecommunications and data networking. This type of wire consists of pairs of insulated copper wires twisted together, which helps to reduce electromagnetic interference and crosstalk between the pairs. The design allows for the effective transmission of data over relatively long distances without significant loss of signal quality, making it an ideal choice for various applications, especially in structured cabling systems. In terms of cost, twisted pair wiring is generally more affordable than other types, such as fiber optic, which can be more expensive due to the materials and technology involved in its production and installation. Additionally, twisted pair wire is widely available and easy to work with, enhancing its appeal for a range of installations. This combination of cost-effectiveness and reliability makes twisted pair wire a popular choice among technicians and engineers for both residential and commercial applications, particularly in building networks and connecting devices like telephones and computers.