Mobile Communication Set 7
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This set of Mobile Communication Multiple Choice Questions & Answers (MCQs) focuses on Mobile Communication Set 7
Q1 | Rectangular crosspoint array is a
- Space switching
- Electronic switching
- Digital switching
- Time switching
Q2 | A time division time switch can be controlled in
- Sequential write/random read
- random write/random read
- random write/sequential read
- All of above
Q3 | In a one-stage space division switch, if N = 200, the number of cross points is
- 10,000
- 20,000
- 40,000
- 30,000
Q4 | ESS stands for
- Electronic Switching System
- Effective Electronic Switching System
- Early Electronic Switching System
- none of these.
Q5 | Circuit switching takes place at the layer of
- data line
- physical
- network
- transport
Q6 | Trunks are the lines that run between
- switching system and power plant
- Local area network
- Switching stations
- Subscribers and exchange
Q7 | Availability of single processor system is given by
- MTBF/MTTR
- MTTR/MTBF
- MTTR/(MTBF+MTTR)
- MTBF/(MTBF+MTTR)
Q8 | Unavailability of single processor system is given by
- MTBF/MTTR
- MTTR/MTBF
- MTTR/(MTBF+MTTR)
- MTBF/(MTBF+MTTR)
Q9 | Availability of Dual processor system is given by
- MTBF2/MTTR2
- 2MTTR/MTBF2
- MTTR2/2(MTBF+MTTR)2
- (MTBF)2/(MTBF)2+2(MTTR)2
Q10 | Unavailability of Dual processor system is given by
- MTBF2/MTTR2
- 2MTTR2/MTBF2
- 2MTTR2/2(MTBF+MTTR)2
- (MTBF)2/(MTBF)2+2(MTTR)2
Q11 | Who developed the fundamental of trunking theory?
- Newton
- Ohm
- Erlang
- Einstein
Q12 | MTTR means
- Maximum Time To Repair
- Most Time To Repair
- Mean Time To Repair.
- Maximum Time To Repair
Q13 | Which form/s of grading design has/have the tendency to share every trunk between equal numbers of groups?
- Homogeneous Grading
- Heterogeneous Grading
- Skipped Grading
- All of the above
Q14 | In a time multiplexed space switching system, one speech sample appears every
- 125 micro sec
- 20 msec
- 125 msec
- 1 sec
Q15 | Time synchronization is necessary in
- FDM
- TDM
- WDM
- Quadrature multiplexing
Q16 | Three methods of switching are
- circuit switching, packet switching, and protocol switching
- circuit switching, packet switching, and message switching
- Loop switching, packet switching, and message switching
- Node switching, packet switching, and message switching
Q17 | If ‘n’ number of users are present in a network with point-to-point links, then how many links will be required in the network?
- n (n – 1)
- n (n – 1) / 2
- n (n – 1) / 4
- n (n – 1) / 8
Q18 | Which among the following is/are adopted by cross bar systems with hard wired control subsystem?
- Relays
- Latches
- Both a and b
- None of the above
Q19 | What is the hardware, used to establish connection as an electrical path between inlet and outlet pair in switching system, known as?
- Switching Matrix
- Switching Network
- Both a and b
- None of the above
Q20 | In folded type of network, ____
- input lines are folded back to output lines
- output lines are folded back to input lines
- input lines are folded back to themselves (input lines)
- output lines are folded back to themselves (output lines)
Q21 | For the two-group grading consisting of 14 trunks, availability = 5, Ak = 1.4E and the required grade of service of about 0.01, what would be its traffic capacity?
- 4.98 E
- 6.72 E
- 8.3 E
- 10 E
Q22 | Which kind of switching system does not comprise any subscriber, concentrator or expander?
- Crossbar
- Director Exchange
- Strowger
- Tandem
Q23 | In Electronic Switching Centre (ESC), the transmission rate of X.25 protocol is ____9.6 Kbps.
- Less than
- Equal to
- Greater than
- None of the above
Q24 | In a single stage network
- There is no redundancy
- There is redundancy
- Alternative cross points are available
- Alternative paths are available
Q25 | What are the Methods to move data through a network of links and switches
- Packet switching
- Circuit switching
- Line switching
- Both a and b