MCQs in Transmission Media

MCQs in Transmission Media from the book Data Communications and Networking 4th Edition by Behrouz A. Forouzan. Reviewer in Electronics Systems and Technologies (Communications Engineering).

Multiple choice questions for Transmission Media

This is the MCQs in Transmission Media from book the Data Communications and Networking 4th Edition by Behrouz A. Forouzan. If you are looking for a reviewer in Electronics Systems and Technologies (Communications Engineering) this will definitely help you before taking the Board Exam.

In this particular topic you have learned the two the two broad categories of bandwidth utilization: multiplexing and spreading. If you skip the summary visit Transmission Media which can be broadly defined as anything that can carry information from a source to a destination.

Begin and Good luck!

Choose the letter of the best answer in each questions.

1. When the angle of incidence is _______ the critical angle, the light beam bends along the interface.

  • A)   less than
  • B)   equal to
  • C)   more than
  • D)   none of the above

2. Transmission media lie below the _______ layer.

  • A)   application
  • B)   transport
  • C)   network
  • D)   physical

3. _________ cable consists of an inner copper core and a second conducting outer sheath.

  • A)   Twisted-pair
  • B)   Shielded twisted-pair
  • C)   Coaxial
  • D)   Fiber-optic

4. __________ consists of a central conductor and a shield.

  • A)   Twisted-pair
  • B)   Coaxial
  • C)   Fiber-optic
  • D)   none of the above

5. _______ cable can carry signals of higher frequency ranges than _______ cable.

  • A)   Coaxial; twisted-pair
  • B)   Twisted-pair; fiber-optic
  • C)   Coaxial; fiber-optic
  • D)   none of the above

6. _________ are used for cellular phone, satellite, and wireless LAN communications.

  • A)   Radio waves
  • B)   Infrared waves
  • C)   Microwaves
  • D)   none of the above

7. The inner core of an optical fiber is _______ in composition.

  • A)   copper
  • B)   glass or plastic
  • C)   bimetallic
  • D)   liquid

8. What is the major factor that makes coaxial cable less susceptible to noise than twisted-pair cable?

  • A)   insulating material
  • B)   inner conductor
  • C)   diameter of cable
  • D)   outer conductor

9. Signals with a frequency below 2 MHz use _______ propagation.

  • A)   line-of-sight
  • B)   sky
  • C)   ground
  • D)   none of the above

10. In an optical fiber, the inner core is _______ the cladding.

  • A)   less dense than
  • B)   denser than
  • C)   the same density as
  • D)   another name for

11. ________ cable consists of two insulated copper wires twisted together.

  • A)   Twisted-pair
  • B)   Coaxial
  • C)   Fiber-optic
  • D)   none of the above

12. In fiber optics, the signal is _______ waves.

  • A)   radio
  • B)   light
  • C)   infrared
  • D)   very low-frequency

13. Signals with a frequency above 30 MHz use _______propagation.

  • A)   line-of-sight
  • B)   sky
  • C)   ground
  • D)   none of the above

14. A parabolic dish antenna is a(n) _______ antenna.

  • A)   unidirectional
  • B)   bidirectional
  • C)   omnidirectional
  • D)   horn

15. A(n) _______ medium provides a physical conduit from one device to another.

  • A)   unguided
  • B)   guided
  • C)   either (a) or (b)
  • D)   none of the above

16. ________ cable is used for voice and data communications.

  • A)   Twisted-pair
  • B)   Coaxial
  • C)   Fiber-optic
  • D)   none of the above

17. Signals with a frequency between 2 MHz and 30 MHz use _______ propagation.

  • A)   ground
  • B)   line-of-sight
  • C)   sky
  • D)   none of the above

18. Transmission media are usually categorized as _______.

  • A)   determinate or indeterminate
  • B)   fixed or unfixed
  • C)   guided or unguided
  • D)   metallic or nonmetallic

19. ________ are used for short-range communications such as those between a PC and a peripheral device.

  • A)   Radio waves
  • B)   Infrared waves
  • C)   Microwaves
  • D)   none of the above

20. _________ media transport electromagnetic waves without the use of a physical conductor.

  • A)   Guided
  • B)   Unguided
  • C)   Either (a) or (b)
  • D)   None of the above

21. ________ cables are composed of a glass or plastic inner core surrounded by cladding, all encased in an outside jacket.

  • A)   Twisted-pair
  • B)   Coaxial
  • C)   Fiber-optic
  • D)   none of the above

22. Which of the following primarily uses guided media?

  • A)   radio broadcasting
  • B)   satellite communications
  • C)   local telephone system
  • D)   cellular telephone system

23. When a beam of light travels through media of two different densities, if the angle of incidence is greater than the critical angle, _______ occurs.

  • A)   refraction
  • B)   reflection
  • C)   criticism
  • D)   incidence

24. Which of the following is not a guided medium?

  • A)   fiber-optic cable
  • B)   coaxial cable
  • C)   twisted-pair cable
  • D)   atmosphere

25. Microwaves are _________.

  • A)   omnidirectional
  • B)   bidirectional
  • C)   unidirectional
  • D)   none of the above

26. ________ cables carry data signals in the form of light.

  • A)   Twisted-pair
  • B)   Coaxial
  • C)   Fiber-optic
  • D)   none of the above

27. Radio waves are _________.

  • A)   unidirectional
  • B)   omnidirectional
  • C)   bidirectional
  • D)   none of the above

28. In a fiber-optic cable, the signal is propagated along the inner core by _______.

  • A)   refraction
  • B)   reflection
  • C)   modulation
  • D)   none of the above

Check your work.

Complete List of Chapter Quiz in Data Communications and Networking

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credit: Behrouz A. Forouzan© 2014 www.PinoyBIX.org

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