Components of Computer Networking – MCQs with Answers

Preparing for technical exams or computer networking interviews? Below is a comprehensive list of Answer Computer Networking Multiple Choice Questions (MCQs) with correct answers. This post is ideal for aspirants preparing for SSC, Banking, Railway, UPSC, or IT exams.

Important MCQs on Computer Networking Components

1. Which of the following primarily uses guided media?
   Answer Local Telephone System
2. Transmission media lie below which layer of OSI model?
   Answer Physical Layer
3. An organization that provides services for accessing the Internet is called?
   Answer Internet Service Provider
4. What is the full form of “BNC”?
   Answer Bayonet Neill Concelman Connector
5. In which cable do inner & outer conductors share a common geometric axis?
   Answer Coaxial cable
6. Which cable is used in 10Base2?
   Answer Thin–coax
7. What is the diameter of Thicknet coaxial cable?
   Answer 0.5 inches
8. What is the diameter of Thinnet coaxial cable?
   Answer 0.25 inches
9. Thicknet coaxial cable can carry a signal up to how many meters?
   Answer 500 meters
10. Thinnet coaxial cable can carry a signal up to how many meters?
    Answer 185 meters
11. What is the type of Co-axial cable?
    Answer Both Thinnet and Thicknet
12. Fiber optic cables operate at frequencies near?
    Answer 800 GHz
13. 100BaseFX is used for?
    Answer Fiber optic cable
14. In which cable is there no electrical signal?
    Answer Fiber optic cable
15. Main components of fiber optic communication system?
    Answer All of these
16. The inner core of Optical Fiber is ___ in composition.
    Answer Glass or plastic
17. In an optical fiber, the inner core is _____ the cladding.
    Answer Denser than
18. In fiber-optic signal is?
    Answer Light
19. In fiber optic, the signal is propagated along the inner core by?
    Answer Reflection
20. The cable which carries data signals in the form of light?
    Answer Fiber-optic Cable
21. The cable which consists of central conductor & a shield?
    Answer Coaxial Cable
22. Which wire color is not found in UTP cable?
    Answer Yellow
23. Typical Ethernet network cable is made-up of?
    Answer 8 cables
24. Which one is not a type of connector in fiber optic cable?
    Answer SJ Connector
25. Mode available in fiber optic cable?
    Answer Single mode and Multi-mode
26. Transmission media with the highest transmission speed?
    Answer Fiber optic cable
27. Preferred cable for undersea communication?
    Answer Fiber Cable
28. Loss in signal power as light travels down the fiber is called?
    Answer Attenuation
29. Types of coaxial cable?
    Answer 10Base–2 and 10Base–5
30. Potential of UTP cables?
    Answer 10Base–T, 100Base–T, 1000Base–T
31. Frequency range of coaxial cable?
    Answer 100 KHz to 500 MHz
32. Factor that makes coaxial cable less noisy?
    Answer Outer conductor
33. Cable with inner copper core and conductive shield separated by dielectric?
    Answer Coaxial Cable
34. Which cable can carry higher frequency signals?
    Answer Coaxial over Twisted-pair
35. When a mobile phone is turned on, it emits?
    Answer Radio waves, Microwaves, Infrared waves
36. Fiber optic cable generates which type of waves?
    Answer Infrared waves
37. Which waves do not penetrate through walls?
    Answer Infrared waves
38. Used for short-range communication between PC & peripherals?
    Answer Infrared waves
39. Used in Wireless Network, Radar & Cancer Treatment?
    Answer Microwaves
40. Microwaves are?
    Answer Uni-directional
41. Media that transports electromagnetic waves without physical conductor?
    Answer Unguided
42. Super high frequency (SHF) is used in?
    Answer Satellite communication
43. Microwave frequency range?
    Answer 1 GHz and 300 GHz
44. Electromagnetic waves between 3 KHz and 1 GHz are called?
    Answer Radio waves
45. Radio waves use which propagation method?
    Answer Ground, Sky, and Line of sight
46. Which is not an unguided medium?
    Answer Fiber optic
47. Which type of cable is used for internet?
    Answer Ethernet Cable
48. Used in conventional PSTN telephone networks?
    Answer RJ-11 connector
49. Type of twisted pair cable?
    Answer UTP and STP
50. Twisting of wires in twisted pair helps in?
    Answer Reduce Noise
51. Which cable is cheap, easy to install, but affected by noise?
    Answer UTP
52. How many pairs in a twisted pair cable?
    Answer 4
53. Full form of STP?
    Answer Shielded Twisted Pair
54. Benefit of metal foil around twisted pair cable?
    Answer Reduction of crosstalk
55. Most frequently used UTP Connector?
    Answer RJ-45
56. Why is UTP popular in LANs?
    Answer Flexibility, Low Cost, Easy Installation
57. How many conductors in twisted pair cable?
    Answer 2 Conductors
58. Cable used for voice & data communication?
    Answer Twisted Pair
59. Cable with 2 insulated copper wires twisted together?
    Answer Twisted Pair

FAQs – Computer Networking

• Answer Q: What is the fastest transmission medium in networking?
  A: Answer Fiber optic cable
• Answer Q: What does BNC stand for?
  A: Answer Bayonet Neill Concelman
• Answer Q: What is used in undersea communication?
  A: Answer Fiber optic cable
• Answer Q: What are UTP cables commonly used for?
  A: Answer LAN networking

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