What is the signal source in optical fiber communications?
Correct answer: A. Light waves
- A. Light waves
- B. Infrared waves
- C. Radio waves
- D. Very low-frequency waves
Explanation
Optical fiber communication relies on light waves to transmit information. Here's why light waves are a perfect choice for this purpose:High Speed: Light travels at extremely high speeds within the fiber optic cable, enabling high-bandwidth data transmission.Low Attenuation: Light waves suffer minimal signal loss over long distances in optical fibers, compared to electrical signals in copper cables.Immunity to Interference: Optical signals are less susceptible to electromagnetic interference compared to electrical signals, ensuring reliable data transmission.By utilizing light waves, optical fiber communication offers significant advantages over traditional electrical-based communication methods, making it the preferred technology for high-speed data transmission across long distances.
Last updated
About Networking and Internet
Networking covers LAN, MAN, WAN and wireless networks, network topologies, transmission media, devices such as switches, routers and modems, and the OSI and TCP/IP models. Internet concepts include IP addresses, DNS, URLs, web browsers, email, protocols such as HTTP, HTTPS, FTP and SMTP, and basic network security.
Practise Networking and Internet
452 free Networking and Internet MCQs from Computer Science and IT, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Computer Science and IT questions like this
Computer Science and IT is on 40 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.