Multiple Choice Questions for Data Communication and Networking
Selective Data Communication and Networking Questions and Answers:
Q.101 Deposition of dopants on fiber preforms is done by….
(A) outside vapor deposition
(B) axial vapor deposition
(C) inside vapor deposition
(D) all of these
Ans . D
102 One unsolved problem with satellite system is….
(A) coverage
(B) privacy
(C) bandwidth
(D) access
Ans . B
Q.103 When the index of refraction is greater in Material 1 than it is in Material 2, the velocity of propagation in Material 1 compared to Material 2 is……
(A) equal or greater
(B) greater
(C) lesser
(D) equal
Ans . C
Q.104 The different angles of entry of light into an optical fiber in which the diameter of the core is many times the wavelength of the light transmitted are called.
(A) Emitters
(B) Modes
(C) Sensors
(D) Refractors
Ans . B
Q.105 In single-mode fiber, a large fraction of the power is propagated in the……
(A) sheath
(B) core
(C) cladding
(D) air
Ans . C
Q.106 The coupling efficiency of an Led light source to an optical fiber with a numerical aperture of 0.2 or more is……
(A) 60 per cent
(B) 10 per cent
(C) 2 per cent
(D) 0.1 per cent
Ans . C
Q.107 The FT3C light wave system contains which of the following number of fibers?
(A) 12
(B) 144
(C) 128
(D) 64
Ans . D
Q.108 A key advantage of Sonet is its capability to enable….
(A) data to be carried at high operating rates.
(B) interoperability of optical transmission between interexchange carriers and telephone companies
(C) routing of data to the home
(D) interconnection of private networks
Ans . B
Q.109 The number of bytes of overhead in a Sonet frame is ….
(A) 90
(B) 9
(C) 27
(D) 87
Ans . C
Q.110 The number of OC-1 signals within an SONET OC-3 signal is….
(A) 3
(B) 6
(C) 9
(D) 12
Ans . A
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Rajesh Bhatia
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