Mobile Communication Set 8

Electronics and Telecommunication Engineering [ENTC]

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This set of Mobile Communication Multiple Choice Questions & Answers (MCQs) focuses on Mobile Communication Set 8

Q1 | In _________ resources are allocated on demand.
  • Packet switching
  • circuit switching
  • line switching
  • frequency switching
Answer: Packet switching
Q2 | The situation when both transmitter and receiver have to work in tandem is referred to as
  • Parallel
  • Serial
  • Synchronous
  • Asynchronous
Answer: Synchronous
Q3 | Given that MTBF=2000Hrs and MTTR = 4Hrs. Calculate the unavailability for single processor systems for 10 years and 30 years.
  • For 10years: U=175.2Hrs and For 30 Years, U=525.6 Hrs.
  • For 10years: U=180.2Hrs and For 30 Years, U=500.6 Hrs.
  • For 10years: U=195.2Hrs and For 30 Years, U=550.6 Hrs.
  • None of the above
Answer: For 10years: U=175.2Hrs and For 30 Years, U=525.6 Hrs.
Q4 | Given that MTBF=2000Hrs and MTTR = 4Hrs. Calculate the unavailability for dual processor systems for 10 years and 30 years.
  • For 10years: U=40.04 min and For 30 Years, U=2.1 Hrs.
  • For 10years: U=180.2Hrs and For 30 Years, U=500.6 Hrs.
  • For 10years: U=195.2Hrs and For 30 Years, U=550.6 Hrs.
  • None of the above
Answer: For 10years: U=40.04 min and For 30 Years, U=2.1 Hrs.
Q5 | Dual processor operates in ____ modes
  • Standby
  • Synchronous
  • Load Sharing
  • All of the above
Answer: All of the above
Q6 | Total number of crosspoints in the two stage concentrator network
  • C2=2/M1/2 N
  • C2=2/N1/2 M
  • C2=2N/(M+N)1/2
  • C2=2M/(M+N)1/2
Answer: C2=2/M1/2 N
Q7 | Total number of crosspoints in the two stage Expander network
  • C2=2/M1/2 N
  • C2=2/N1/2 M
  • C2=2N/(M+N)1/2
  • C2=2M/(M+N)1/2
Answer: C2=2/N1/2 M
Q8 | Total number of crosspoints in the three stage concentrator network
  • C3=2/M1/2 N
  • C3=2/N1/2 M
  • C3=2N/(M+N)1/2
  • C3=2M/(M+N)1/2
Answer: C3=2N/(M+N)1/2
Q9 | Total number of crosspoints in the three stage expander network
  • C3=2/M1/2 N
  • C3=2/N1/2 M
  • C3=2N/(M+N)1/2
  • C3=2M/(M+N)1/2
Answer: C3=2M/(M+N)1/2
Q10 | Number of inlets and outlets in the two stage concentrator network are given by the formula
  • m = n= M1/2
  • m = n= N1/2
  • m = M/ (M+N)1/2 , n = N/ (M+N)1/2
  • All of the above
Answer: m = n= M1/2
Q11 | Number of inlets and outlets in the two stage Expander network are given by the formula
  • m = n= M1/2
  • m = n= N1/2
  • m = M/ (M+N)1/2 , n = N/ (M+N)1/2
  • All of the above
Answer: m = n= N1/2
Q12 | Different forms of grading are
  • Skipped, Homogeneous, progressive
  • Skipped, sequential, progressive
  • Skipped, Homogeneous, random
  • None of the above
Answer: Skipped, Homogeneous, progressive
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