Top 150+ Solved Mobile Communication MCQ Questions Answer
Q. 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?
a. n (n – 1)
b. n (n – 1) / 2
c. n (n – 1) / 4
d. n (n – 1) / 8
Q. Which among the following is/are adopted by cross bar systems with hard wired control subsystem?
a. Relays
b. Latches
c. Both a and b
d. None of the above
Q. What is the hardware, used to establish connection as an electrical path between inlet and outlet pair in switching system, known as?
a. Switching Matrix
b. Switching Network
c. Both a and b
d. None of the above
Q. In folded type of network, ____
a. input lines are folded back to output lines
b. output lines are folded back to input lines
c. input lines are folded back to themselves (input lines)
d. output lines are folded back to themselves (output lines)
Q. Which kind of switching system does not comprise any subscriber, concentrator or expander?
a. Crossbar
b. Director Exchange
c. Strowger
d. Tandem
Q. In Electronic Switching Centre (ESC), the transmission rate of X.25 protocol is ____9.6 Kbps.
a. Less than
b. Equal to
c. Greater than
d. None of the above
Q. In a single stage network
a. There is no redundancy
b. There is redundancy
c. Alternative cross points are available
d. Alternative paths are available
Q. What are the Methods to move data through a network of links and switches
a. Packet switching
b. Circuit switching
c. Line switching
d. Both a and b
Q. In _________ resources are allocated on demand.
a. Packet switching
b. circuit switching
c. line switching
d. frequency switching
Q. The situation when both transmitter and receiver have to work in tandem is referred to as
a. Parallel
b. Serial
c. Synchronous
d. Asynchronous
Q. Given that MTBF=2000Hrs and MTTR = 4Hrs. Calculate the unavailability for single processor systems for 10 years and 30 years.
a. For 10years: U=175.2Hrs and For 30 Years, U=525.6 Hrs.
b. For 10years: U=180.2Hrs and For 30 Years, U=500.6 Hrs.
c. For 10years: U=195.2Hrs and For 30 Years, U=550.6 Hrs.
d. None of the above
Q. Given that MTBF=2000Hrs and MTTR = 4Hrs. Calculate the unavailability for dual processor systems for 10 years and 30 years.
a. For 10years: U=40.04 min and For 30 Years, U=2.1 Hrs.
b. For 10years: U=180.2Hrs and For 30 Years, U=500.6 Hrs.
c. For 10years: U=195.2Hrs and For 30 Years, U=550.6 Hrs.
d. None of the above
Q. Dual processor operates in ____ modes
a. Standby
b. Synchronous
c. Load Sharing
d. All of the above
Q. Total number of crosspoints in the two stage concentrator network
a. C2=2/M1/2 N
b. C2=2/N1/2 M
c. C2=2N/(M+N)1/2
d. C2=2M/(M+N)1/2