Wireless Communication Multiple Choice Questions with Answers

Questions

61 Mobile Assisted Handoff (MAHO) provides

A Faster handoffs

B Suitability for frequent handoffs

C MSC need not monitor the signal strength

D All of the above

View Answer

Answer: All of the above

62 When all of the radio channels are in use in a trunking system

A The user is blocked

B The access to the system is denied

C The queue may be provided

D All of the above

View Answer

Answer: All of the above

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63 Interference in cellular systems is caused by

A Two base stations operating in same frequency band

B Two calls in progress in nearby mobile stations

C Leakage of energy signals by non cellular systems into cellular frequency band

D All of the above

View Answer

Answer: All of the above

64 Co-channel reuse ratio depends upon

A Radius of the cell

B Distance between the centers of the co channel cells

C Frequency allocation of nearest cells

D Both a and b

View Answer

Answer: Both a and b

65 The techniques used to improve the capacity of cellular systems are

A Splitting

B Sectoring

C Coverage zone approach

D All of the above

View Answer

Answer: Random access protocol

66 Distributed antenna systems are used at

A Transmitters of mobile systems

B Transmitters of base stations

C Inputs and outputs of repeaters

D Receivers of mobile stations

View Answer

Answer: Inputs and outputs of repeaters

67 Antenna down tilting refers to

A Decreasing the S/N ratio at the antenna input

B Decreasing the strength of antenna

C Focusing radio energy towards ground

D All of the above

View Answer

Answer: Focusing radio energy towards ground

68 The rainbow pattern seen on a CD is an example of

A Reflection

B Refraction

C Diffraction

D None of the above

View Answer

Answer: Diffraction

69 When a wave falls on a perfect conductor

A Wave is partially reflected and partially transmitted

B All incident energy is reflected back without loss of energy

C Part of energy gets absorbed

D Both a and c

View Answer

Answer: All incident energy is reflected back without loss of energy

70 Brewster angle is the angle at which

A No reflection occurs at the first medium

B Reflection coefficient is zero

C The wave gets refracted in the direction of source

D Both a and b

View Answer

Answer: Both a and b

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