Q26. Which of the following is a type of data transmission media that uses a hollow metallic tube to guide electromagnetic waves?
a) Twisted pair
b) Coaxial cable
c) Waveguide
d) Radio waves
Show Answer
Correct Answer: c) Waveguide
Explanation: A waveguide is a type of data transmission media that uses a hollow metallic tube to guide electromagnetic waves. Waveguides are commonly used in microwave communication systems, such as satellite communication and radar systems. They can also be used in optical communication systems, where they guide light waves instead of electromagnetic waves.
Q27. Which of the following is a type of data transmission media that uses a series of satellites to relay signals between ground stations?
a) Twisted pair
b) Coaxial cable
c) Optical fiber
d) Satellite
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Correct Answer: d) Satellite
Explanation: Satellite communication is a type of data transmission media that uses a series of satellites to relay signals between ground stations. In satellite communication systems, signals are transmitted from a ground station to a satellite in orbit, which then retransmits the signals to another ground station or directly to the receiver. Satellite communication is commonly used for long-distance communication, such as international telephone calls, television broadcasting, and global positioning systems (GPS).
Q28. Which of the following is a type of data transmission media that uses a series of antennas to relay signals between ground stations?
a) Twisted pair
b) Coaxial cable
c) Optical fiber
d) Microwave relay
Show Answer
Correct Answer: d) Microwave relay
Explanation: Microwave relay is a type of data transmission media that uses a series of antennas to relay signals between ground stations. In microwave relay systems, signals are transmitted from one antenna to another using line-of-sight microwave links. Microwave relay systems are commonly used for point-to-point data transmission, such as between two buildings or across long distances.
Q29. Which of the following is a type of data transmission media that uses a series of repeaters to amplify and regenerate signals over long distances?
a) Twisted pair
b) Coaxial cable
c) Optical fiber
d) Long-haul network
Show Answer
Correct Answer: c) Optical fiber
Explanation: Optical fiber is a type of data transmission media that uses a series of repeaters to amplify and regenerate signals over long distances. Optical fibers are made of thin strands of glass or plastic that can carry light signals with minimal signal loss and interference. They offer several advantages over other types of data transmission media, such as twisted pair and coaxial cables, including higher data transmission speeds, greater resistance to interference, and longer transmission distances without the need for signal repeaters.
Q30. Which of the following is a type of data transmission media that uses a series of routers to route data packets between networks?
a) Twisted pair
b) Coaxial cable
c) Optical fiber
d) Packet-switched network
Show Answer
Correct Answer: d) Packet-switched network
Explanation: A packet-switched network is a type of data transmission media that uses a series of routers to route data packets between networks. In packet-switched networks, data is divided into packets, which are transmitted independently over a shared network. Packet switching is more efficient than circuit switching, as it allows multiple communication sessions to share the same network resources simultaneously. It is commonly used in modern computer networks, such as the Internet.
More MCQ on Computer GK for Competitive Exams
- Introduction to Computer
- Basic Computer Organization
- Number Systems
- Computer Codes
- Processor and Memory
- Secondary Storage Devices
- Input and Output Devices
- Computer Software
- Flowchart and Computer Languages
- System Implementation
- Operating Systems
- Application Software Packages
- Business Data Processing
- Communications and Networks
- Internet Concepts and IoT
- Multimedia and File Extensions
- Classification of Computers
- Cyber Safety and Cyber Crime
- Computer Viruses and Security
- Basic Computer Shortcut Keys
- Shortcut Keys for Windows
- Shortcut Keys for MS Excel
- Shortcut Keys for MS Word
- Computer Abbreviations Set 1
- Computer Abbreviations Set 2
- Computer Abbreviations Set 3
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