Cable Communication Exam Questions and Answers
This exam questions and answers about cable communication covers a wide range of topics, including cable construction, cable materials, cable testing, and cable maintenance. The questions are designed to test the knowledge and skills of cable communication professionals, and the answers provide detailed explanations to help them better understand and apply the principles of cable communication. The questions and answers are organized alphabetically for easy reference, making it a valuable resource for anyone studying or working in the field of cable communication.
In the field of telecommunications, cable communication is a crucial aspect. It involves the transmission of signals over long distances through cables, offering stability and reliability in communication. The following is a collection of exam questions and answers to help understand the fundamentals of cable communication.
Question 1:
What is cable communication?
Answer:
Cable communication refers to the transmission of signals over long distances through cables. It is a reliable and stable form of communication used in telecommunications, broadcasting, and computer networking.
Question 2:
What are the main components of a cable communication system?
Answer:
The main components of a cable communication system include the transmitter, the cable, the receiver, and the signal processing equipment. The transmitter converts the message into a signal, which is then transmitted through the cable. The cable acts as the medium for signal propagation, while the receiver captures the signal and converts it back into a message. Signal processing equipment is used to enhance and stabilize the signal during transmission.
Question 3:
What are the advantages of using cable communication?
Answer:
Cable communication offers several advantages, including its reliability, stability, and immunity to electromagnetic interference. It also provides a high level of privacy and security in communication, as well as the ability to carry multiple signals simultaneously over a single cable.
Question 4:
What are some common types of cables used in cable communication?
Answer:
Common types of cables used in cable communication include coaxial cables, twisted-pair cables, and fiber-optic cables. Coaxial cables consist of a center conductor surrounded by a tubular outer conductor, providing high performance in frequency and electromagnetic interference resistance. Twisted-pair cables consist of two conductors twisted together, offering low cost and good performance for short to medium distance communication. Fiber-optic cables, on the other hand, transmit signals through optical fibers, offering high bandwidth, low loss, and resistance to electromagnetic interference.
Question 5:
What is the role of a repeater in cable communication?
Answer:
A repeater acts as an amplifier and regenerator in cable communication. It receives a weak signal from a cable, amplifies it, and then re-transmits it along the same or a different cable. Repeaters are used to extend the range of a cable communication system by breaking up long cable runs into shorter segments. They also help to improve signal quality by reducing noise and interference.
Question 6:
What are some applications of cable communication?
Answer:
Cable communication finds applications in various fields, including telecommunications, broadcasting, and computer networking. In telecommunications, it is used for voice, data, and video transmission between different locations. In broadcasting, cable television relies on cable communication to deliver signals from broadcast stations to subscribers' homes. In computer networking, cables are used to connect computers and other devices together, forming a local area network (LAN) or wide area network (WAN).
Question 7:
What are the challenges associated with cable communication?
Answer:
Some challenges associated with cable communication include cable maintenance and repair, signal degradation over distance, and electromagnetic interference. Cables can be subject to physical damage, weather conditions, and aging, which can affect their performance and reliability. Signal degradation can occur over long distances due to factors such as attenuation and noise, affecting signal quality. Meanwhile, electromagnetic interference can cause signal distortions and interference from other sources operating at the same frequency.
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