MCQOPTIONS
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MCQOPTIONS
This section includes 37 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Engineering (MCQ) questions & answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In message switching system, an incoming message gets ____ especially if the required route is busy. |
| A. | lost |
| B. | stored in a queue & retransmitted |
| C. | sampled |
| D. | recovered |
| Answer» C. sampled | |
| 2. |
In packet switching, what does the header of each short size of packet consist of? |
| A. | Source address |
| B. | Destination address |
| C. | Intermediate nodes |
| D. | All of the above |
| Answer» E. | |
| 3. |
Which type of switching network involves the establishment of a dedicated path between two stations? |
| A. | Message Switching |
| B. | Packet Switching |
| C. | Circuit Switching |
| D. | Manual Switching |
| Answer» D. Manual Switching | |
| 4. |
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 |
| Answer» D. None of the above | |
| 5. |
If a group of trunk is offered 1200 calls during the busy hour & 20 calls are lost along with the average call duration of about 7 min, then what would be the total duration of congestion period? |
| A. | 21.6 sec |
| B. | 42.2 sec |
| C. | 57.6 sec |
| D. | 98.2 sec |
| Answer» D. 98.2 sec | |
| 6. |
Which model of loss system allows the usage of Poisson distribution model for traffic analysis especially by assuming infinite number of users? |
| A. | Lost Calls Cleared (LCC) |
| B. | Lost Calls Returned (LCR) |
| C. | Lost Calls Held (LCH) |
| D. | None of the above |
| Answer» B. Lost Calls Returned (LCR) | |
| 7. |
Which type of holding time distribution is assumed for the voice conversation on telephone? |
| A. | Constant |
| B. | Exponential |
| C. | Both a and b |
| D. | None of the above |
| Answer» C. Both a and b | |
| 8. |
The ratio of number of successful calls to the number of call attempts is known as ______ |
| A. | Call Completion Rate (CCR) |
| B. | Call Block Rate (CBR) |
| C. | Busy Hour Call Rate (BHCR) |
| D. | None of the above |
| Answer» B. Call Block Rate (CBR) | |
| 9. |
If the queuing systems are connected in tandem configuration, what would be the nature of delay? |
| A. | Commutative |
| B. | Distributive |
| C. | Cumulative |
| D. | Deductive |
| Answer» D. Deductive | |
| 10. |
In analyzing the traffic performance, how is the number of trunk decided with the provision of the Grade of Service (GoS) especially for larger group? |
| A. | By normal load condition |
| B. | By overload condition |
| C. | By underload condition |
| D. | None of the above |
| Answer» C. By underload condition | |
| 11. |
Which kind of switching technique indicates the transfer of coded values from input to output during the same interval of time? |
| A. | Space Switching |
| B. | Time Switching |
| C. | Combination Switching |
| D. | None of the above |
| Answer» B. Time Switching | |
| 12. |
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 |
| Answer» D. None of the above | |
| 13. |
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) |
| Answer» C. input lines are folded back to themselves (input lines) | |
| 14. |
Which signals are regarded as call-progress signals as they are sent back to inform the caller about the progress of the call? |
| A. | Address Signals |
| B. | Status Signals |
| C. | Call request Signals |
| D. | Answer Signals |
| Answer» C. Call request Signals | |
| 15. |
By how many times does the time division exchange exhibit connection and disconnection with respect to every millisecond, due to its ability of using rearrangeable networks? |
| A. | 2 |
| B. | 4 |
| C. | 8 |
| D. | 16 |
| Answer» D. 16 | |
| 16. |
Phase jitter is generated by an additive noise on a__________sinusoidal wave. |
| A. | continuous |
| B. | sampled |
| C. | discrete |
| D. | distorted |
| Answer» B. sampled | |
| 17. |
Which kind of switching system does not comprise any subscriber, concentrator or expander? |
| A. | Crossbar |
| B. | Director Exchange |
| C. | Strowger |
| D. | Tandem |
| Answer» E. | |
| 18. |
In two-stage network, which phenomenon/situation occurs due to impossible connectivity of given incoming trunk to selected outgoing trunk specifically because of link utilization for other connection between primary and secondary switches? |
| A. | Bursting |
| B. | Blinking |
| C. | Blocking |
| D. | Burning |
| Answer» D. Burning | |
| 19. |
If a telephone exchange serves 1500 users with the average BHCA of about 9000 and CCR is about 50%, what would be the busy hour calling rate? |
| A. | 2 |
| B. | 3 |
| C. | 4.5 |
| D. | 5 |
| Answer» C. 4.5 | |
| 20. |
Percentage of occupancy can be defined as the percentage of _____ for which the server seems to be busy. |
| A. | speed |
| B. | distance |
| C. | time |
| D. | volume |
| Answer» D. volume | |
| 21. |
How is the relation between Erlang and CCS specified? |
| A. | 1 Erlang = 36 CCS |
| B. | 1 Erlang = 56 CCS |
| C. | 1 Erlang = 76 CCS |
| D. | 1 Erlang = 96 CCS |
| Answer» B. 1 Erlang = 56 CCS | |
| 22. |
In graded groups, switches with inaccessibility to the outgoing route gets ____into the number of separate groups. |
| A. | added |
| B. | subtracted |
| C. | multiplied |
| D. | divided |
| Answer» D. divided | |
| 23. |
By which name/s is the Grade of Service (GOS) well-known? |
| A. | Call congestion |
| B. | Time congestion |
| C. | Both a and b |
| D. | None of the above |
| Answer» B. Time congestion | |
| 24. |
Which form/s of grading design has/have the tendency to share every trunk between equal number of groups? |
| A. | Homogeneous Grading |
| B. | Heterogeneous Grading |
| C. | Skipped Grading |
| D. | All of the above |
| Answer» B. Heterogeneous Grading | |
| 25. |
For the two-group grading consisting of 14 trunks, availability = 5, A = 1.4E and the required grade of service of about 0.01, what would be its traffic capacity? |
| A. | 4.98 E |
| B. | 6.72 E |
| C. | 8.3 E |
| D. | 10 E |
| Answer» B. 6.72 E | |
| 26. |
Which method of cellular network assists in minimizing the co-channel interference associated with the angle of degree? |
| A. | Cell Splitting |
| B. | Cell Sectoring |
| C. | Cell Segmentation & Dualization |
| D. | None of the above |
| Answer» C. Cell Segmentation & Dualization | |
| 27. |
Which effect is widespread in adjacent-channel interference especially after the reception of a weak signal by a mobile user from the base-station? |
| A. | Near-far effect |
| B. | Doppler's effect |
| C. | Capture effect |
| D. | Kendall effect |
| Answer» B. Doppler's effect | |
| 28. |
In a cellular telephone system, which type of interference results from imperfect design of filters in receivers by allowing nearby frequencies to enter the receiver? |
| A. | Co-channel Interference |
| B. | Adjacent-channel Interference |
| C. | Both a and b |
| D. | None of the above |
| Answer» C. Both a and b | |
| 29. |
Which antennas are used at the center of the cells for the system with hexagonal-shaped cells? |
| A. | Omni-directional antennas |
| B. | Sectored directional antennas |
| C. | Both a and b |
| D. | None of the above |
| Answer» B. Sectored directional antennas | |
| 30. |
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 |
| Answer» D. None of the above | |
| 31. |
If the system is designed with the usage of hexagonal-shaped cells, how are the base-stations located? |
| A. | At the centre of cell |
| B. | At the edge of cell |
| C. | At the corner of the cell |
| D. | All of the above |
| Answer» E. | |
| 32. |
In cellular telephone network, which component controls the switching between public wireline telephone network and the base station of cells for supporting the different calls between landline to mobile, mobile to landline and mobile to mobile calls? |
| A. | Electronic Switching Center (ESC) |
| B. | A Cell Controller |
| C. | Radio Transmitter & Receiver |
| D. | A common communication protocol |
| Answer» B. A Cell Controller | |
| 33. |
Which among the following represents the flawless hand-off with no perceivable interruption of service? |
| A. | Hard hand-off |
| B. | Soft hand-off |
| C. | Intracell hand-off |
| D. | Intercell hand-off |
| Answer» C. Intracell hand-off | |
| 34. |
Which hand-off stage deals with the relinquishment of unnecessary frequency channels by keeping the availability for other mobile users? |
| A. | Initialization |
| B. | Resource Reservation |
| C. | Call Execution |
| D. | Call Completion |
| Answer» E. | |
| 35. |
If more number of cells are necessary in the frequency reuse distance, then the segmentation & dualization techniques get ________ |
| A. | united |
| B. | divided |
| C. | restricted |
| D. | filtered |
| Answer» B. divided | |
| 36. |
Consider the statements given below. Which among them represents the operational step executed in datagram Packet Switched Network? |
| A. | Fixed Path is assigned between nodes from source to destination |
| B. | First Come First Serviced basis is applicable |
| C. | Necessity of an identifier for a connection between source host & destination host |
| D. | Transmission of short messages of one or two packet lengths |
| Answer» E. | |
| 37. |
Which among the following can be adopted as a dedicated path between the source and destination in circuit switching? |
| A. | Physical Wire |
| B. | Radio Link |
| C. | Co-axial Cable |
| D. | All of the above |
| Answer» E. | |