Objective Questions on Data Transmission Medium Part-2

1. In ................. transmission system are widely used in the backbone of network.
A) Fiber optic
B) Co-axial
C) UTP
D) STP

2.  State the following statements are True or False for the applications of optical fiber cables.
i) Optical fiber are now used in the telephone systems.
ii) The installation cost of optical fibers is higher than that for the Co-axial cables.
iii) They are used for analog telephone networks.
A) i-True, ii-False, iii-True
B) i-True, ii-True, iii-True
C) i-False, ii-True, iii-False
D) i-True, ii-True, iii-False

3. The sources of light for optical fiber communication ................. provides an unfocused light  which hits the core boundaries and get discussed.
A) ILD
B) LED
C) LOD
D) ELD

4. In optical fiber communication, the ................... can provide very focused beam that can be used for a long distance communication.
A) ILD
B) LED
C) LOD
D) ELD

5. Which of the following statements are True for step index and graded index fibers.
i) The light rays travel in straight line through the step index fibers.
ii) Acceptance cone of graded index fibers is smaller than that of the step index fiber.
iii) In graded index fiber, the light rays do not travel in straight line due to continuous refraction.
A) i and ii only
B) i and iii only
C) ii and iii only
A) All i, ii and iii

6. State True or False for following statements about single mode and multi-mode fibers.
 i) Multi-mode fiber can have either step index or graded index profile.
ii) Single mode fiber are high quality fiber for wide band long haul transmission.
iii) The amount of dispersion introduced in single mode fiber is greater than that introduced in the multi-mode fibers.
A) i-True, ii-False, iii-True
B) i-True, ii-True, iii-True
C) i-False, ii-True, iii-False
D) i-True, ii-True, iii-False

7. ............ cable has much lower attenuation and can carry signal to longer distances without using amplifiers and repeaters in between.
A) Optical fiber
B) Co-axial
C) UTP
D) STP

8. ................... cable is not affected by EMI effects and can be used in areas where high voltage are passing by .
A) Fiber optic
B) Co-axial
C) UTP
D) STP

9. State whether the following statements are True for the characteristics of optical fiber cables.
i) The cost of fiber optic cable is more compared to twisted pair  and Co-axial.
ii) The installation of fiber optic cables is easier.
iii) The number of modes which a fiber optic can support does not depend on its length.
A) i and ii only
B) i and iii only
C) ii and iii only
A) All i, ii and iii

10. .................... cable is not affected by potential shifts in the electrical ground, nor does it produce sparks.
A) Fiber optic
B) Co-axial
C) UTP
D) STP



11. Which of the following are the advantages of fiber optic communication  over t he conventional means of communication.
i) Small size and light weight  ii) Easy availability and low cost  iii) No electrical or electromagnetic interference  iv) Large bandwidth
A) i, ii and iii only
B) ii, iii and iv only
C) i, iii and iv only
D) All i, ii, iii and iv

12. Which of the following are the drawbacks of optical fiber.
i) Ground loops are absent  ii) The initial cost incurred in high  iii) Joining the optical fiber is difficult job
A) i and ii only
B) i and iii only
C) ii and iii only
A) All i, ii and iii

13. Fiber optic cables use three types of connectors which are
i) SC connector   ii) BC connector   iii) ST connector   iv) LT-RJ connector  v) MT-RJ connector
A) i, iii and v only
B) iii, iv an v only
C) i, iii and v only
D) ii, iii and iv only

14. The ................ is used for cable TV, which use a push/pull locking system.
A) SC connector
B) BC connector
C) ST connector
D) MT-RJ connector

15. The ................ connector is used for connecting a cable to networking devices, which uses a bayonet locking system.
A) SC connector
B) BC connector
C) ST connector
D) MT-RJ connector

16. In ............... short circuit between the two conductors is not possible.
A) Optical fiber
B) Co-axial
C) UTP
D) STP

 17. In ................. power loss occurs due to absorption, scattering, dispersion and bending.
A) Optical fiber
B) Co-axial
C) UTP
D) STP

18. In ................. EMI is reduced due to shielding.
A) Optical fiber cable
B) Co-axial cable
C) UTP  cable
D) STP cable

19. In Co-axial cable, the node capacity per segment is ...........
A) 4o to 110
B) 30 to 90
C) 30 to 100
D) 40 to 100

20. ............... is less affected due to external magnetic field.
A) Optical fiber cable
B) Co-axial cable
C) UTP  cable
D) STP cable

Answers

1. A) Fiber optic
2. D) i-True, ii-True, iii-False
3. B) LED
4. A) ILD
5. B) i and iii only
6. D) i-True, ii-True, iii-False
7. A) Optical fiber
8. A) Fiber optic
9. B) i and iii only
10. A) Fiber optic
11. D) All i, ii, iii and iv
12. C) ii and iii only
13. C) i, iii and v only
14. A) SC connector
15. C) ST connector
16. A) Optical fiber
17. A) Optical fiber
18. B) Co-axial cable
19. C) 30 to 100
20. B) Co-axial cable

Read Next:Objective Questions on Data Transmission Medium Part-3

Objective Questions on Data Transmission Medium Part-2
2017-01-08T00:00:00-08:00
Shuseel Baral
Multiple Choice Question (MCQ)|Networking|