MCQOPTIONS
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MCQOPTIONS
This section includes 84 Mcqs, each offering curated multiple-choice questions to sharpen your Analog Communications knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
In _______ switching, the paths in the circuit are separated from one another spatially. |
| A. | time-division |
| B. | space-division |
| C. | two-dimensional |
| D. | three-dimensional |
| Answer» C. two-dimensional | |
| 52. |
Based on the Clos criteria, if N = 200, then k must be equal to or greater than ____. |
| A. | 21 |
| B. | 19 |
| C. | 31 |
| D. | 41 |
| Answer» C. 31 | |
| 53. |
Based on the Clos criteria, if N = 200, then the minimum number of crosspoints is greater than or equal to _______. |
| A. | 15,200 |
| B. | 18,000 |
| C. | 42,000 |
| D. | 20,000 |
| Answer» B. 18,000 | |
| 54. |
The most popular technology in time-division switching is called the _________. |
| A. | STI |
| B. | ITS |
| C. | TSI |
| D. | none of the above |
| Answer» D. none of the above | |
| 55. |
Based on the Clos criteria, if N = 200, then n must be equal to or greater than ____. |
| A. | 10 |
| B. | 20 |
| C. | 30 |
| D. | 40 |
| Answer» B. 20 | |
| 56. |
The simplest type of switching fabric is the ______ switch. |
| A. | crosspoint |
| B. | crossbar |
| C. | TSI |
| D. | STS |
| Answer» C. TSI | |
| 57. |
A ________ switch is a multistage switch with microswitches at each stage that route the packets based on the output port represented as a binary string. |
| A. | crossbar |
| B. | TSI |
| C. | banyan |
| D. | none of the above |
| Answer» D. none of the above | |
| 58. |
A _________ network is a cross between a circuit-switched network and a datagram network. It has some characteristics of both. |
| A. | virtual-circuit |
| B. | packet-switched |
| C. | frame-switched |
| D. | none of the above |
| Answer» B. packet-switched | |
| 59. |
We can say that a packet switch has _______ types of components. |
| A. | two |
| B. | three |
| C. | four |
| D. | none of the above |
| Answer» D. none of the above | |
| 60. |
In _______, the resources need to be reserved during the setup phase; the resources remain dedicated for the entire duration of data transfer phase until the teardown phase. |
| A. | datagram switching |
| B. | circuit switching |
| C. | frame switching |
| D. | none of the above |
| Answer» C. frame switching | |
| 61. |
In a banyan switch, for 8 inputs and 8 outputs, we have _____ stages. |
| A. | 8 |
| B. | 4 |
| C. | 3 |
| D. | 2 |
| Answer» D. 2 | |
| 62. |
In __________, each packet is treated independently of all others. |
| A. | datagram switching |
| B. | circuit switching |
| C. | frame switching |
| D. | none of the above |
| Answer» B. circuit switching | |
| 63. |
In _______ there are no setup or teardown phases. |
| A. | datagram switching |
| B. | circuit switching |
| C. | frame switching |
| D. | none of the above |
| Answer» B. circuit switching | |
| 64. |
In _________, there is no resource allocation for a packet. |
| A. | datagram switching |
| B. | circuit switching |
| C. | frame switching |
| D. | none of the above |
| Answer» B. circuit switching | |
| 65. |
In _________, resources are allocated on demand. |
| A. | datagram switching |
| B. | circuit switching |
| C. | frame switching |
| D. | none of the above |
| Answer» B. circuit switching | |
| 66. |
The local telephone network is the example of ___________network. |
| A. | Circuit switch |
| B. | Packet switch |
| C. | Both a and b |
| D. | None of the above |
| Answer» C. Both a and b | |
| 67. |
A ________ network is made of a set of switches connected by physical links, in which each link is divided into n channels. |
| A. | line-switched |
| B. | frame-switched |
| C. | circuit-switched |
| D. | none of the above |
| Answer» D. none of the above | |
| 68. |
STP (Spanning tree protocol) is a switching protocol that prevents _____ in switching network. |
| A. | Route poisoning |
| B. | Use for network discovery |
| C. | Broadcast |
| D. | Loops |
| Answer» E. | |
| 69. |
A Circuit-Switched Network is made of a set of switches connected by physical |
| A. | links |
| B. | media |
| C. | nodes |
| D. | frames |
| Answer» B. media | |
| 70. |
Circuit switching takes place at the |
| A. | session layer |
| B. | application layer |
| C. | data link layer |
| D. | physical layer |
| Answer» E. | |
| 71. |
Actual communication in a circuit-switched network requires |
| A. | one phase |
| B. | two phases |
| C. | three phases |
| D. | four phases |
| Answer» D. four phases | |
| 72. |
In Circuit Switching, resources need to be reserved during the |
| A. | Data transfer phase |
| B. | Teardown phase |
| C. | Setup phase |
| D. | Propagation phase |
| Answer» D. Propagation phase | |
| 73. |
Setup, data transfer, and connection teardown are three phases of |
| A. | packet switching |
| B. | circuit switching |
| C. | message switching |
| D. | none of the above |
| Answer» C. message switching | |
| 74. |
Traditionally, _____ methods of switching have been important. |
| A. | four |
| B. | three |
| C. | five |
| D. | six |
| Answer» C. five | |
| 75. |
Switching in Internet done by using datagram approach to packet switching at the |
| A. | network layer |
| B. | application layer |
| C. | data link layer |
| D. | physical layer |
| Answer» B. application layer | |
| 76. |
SIGNAL_TO_NOISE_RATIO_OF_A_FREQUENCY_MODULATED_SYSTEM_IS_BETTER_THAN_AMPLITUDE_MODULATED_SYSTEM.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 77. |
What_will_be_the_effect_on_power_if_the_distance_between_the_sidebands_and_center_frequency_increases?$ |
| A. | power decreases |
| B. | power increases |
| C. | power remains same |
| D. | power becomes twice of its previous value |
| Answer» B. power increases | |
| 78. |
FM stereo ________? |
| A. | is implemented using an SCA signal |
| B. | has a higher signal to noise ratio than mono FM |
| C. | is not compatible with mono FM |
| D. | uses DSBSC AM modulation |
| Answer» E. | |
| 79. |
Which effect is observed when FM reception deteriorates abruptly due to noise? |
| A. | Threshold effect |
| B. | Capture effect |
| C. | Noise effect |
| D. | Limit effect |
| Answer» B. Capture effect | |
| 80. |
FM bandwidth can be approximated by ________ |
| A. | Carson’s rule |
| B. | Armstrong’s rule |
| C. | Bessel’s rule |
| D. | Pythagoras rule |
| Answer» B. Armstrong‚Äö√Ñ√∂‚àö√ë‚àö¬•s rule | |
| 81. |
How can we derive FM from PM? |
| A. | by integrating the modulating signal before applying to the PM oscillator |
| B. | by integrating signal out of the PM oscillator |
| C. | by differentiating the modulating signal before applying to the PM oscillator |
| D. | by differentiating signal out of the PM oscillator |
| Answer» B. by integrating signal out of the PM oscillator | |
| 82. |
What is the modulation index for getting maximum power in amplitude modulated system? |
| A. | 1 |
| B. | <sup>1</sup>‚ÅÑ<sub>2</sub> |
| C. | 0.3 |
| D. | 0.8 |
| Answer» B. <sup>1</sup>‚Äö√Ñ√∂‚àö√ñ‚àö√´<sub>2</sub> | |
| 83. |
What will be the effect on power in amplitude modulated system if we increase the modulation index? |
| A. | increases |
| B. | becomes twice |
| C. | remains same |
| D. | decreases |
| Answer» B. becomes twice | |
| 84. |
If we compared to the USB, the power in the LSB is ________ |
| A. | one-fourth of USB |
| B. | twice of USB |
| C. | same as USB |
| D. | half of USB |
| Answer» D. half of USB | |