MCQOPTIONS
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MCQOPTIONS
This section includes 259 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
can potentially provide spectral conservation through the use of multilevel signalling. |
| A. | m-ary psk |
| B. | mfsk |
| C. | ask |
| D. | dfsk |
| Answer» B. mfsk | |
| 52. |
is the unique property of the glass fiber. |
| A. | transmission |
| B. | opaque property |
| C. | ductile |
| D. | malleable |
| Answer» B. opaque property | |
| 53. |
An injection laser has active cavity losses of 25 cm-1 and the reflectivity of each laser facet is 30%. Determine the laser gain coefficient for the cavity it has a length of 500μm. |
| A. | 46 cm-1 |
| B. | 51 cm-1 |
| C. | 50 cm-1 |
| D. | 49.07 cm-1 |
| Answer» E. | |
| 54. |
refers to the process whereby a node finds one or more paths to possible destinations in a network. |
| A. | routing |
| B. | framing |
| C. | lightning |
| D. | cloning |
| Answer» B. framing | |
| 55. |
External modulation for modulation format allows the most sensitive coherent detection mechanism. |
| A. | fsk |
| B. | dsk |
| C. | psk |
| D. | ask |
| Answer» D. ask | |
| 56. |
limits the maximum distance between the optical fiber transmitter and receiver. |
| A. | attenuation |
| B. | transmission |
| C. | equipment |
| D. | fiber length |
| Answer» B. transmission | |
| 57. |
affects both the fiber attenuation and dispersion. |
| A. | refractive index |
| B. | micro-bending |
| C. | connectors |
| D. | splices |
| Answer» C. connectors | |
| 58. |
technique involves an increase in the number of components required. |
| A. | time division multiplexing |
| B. | space division multiplexing |
| C. | code division multiplexing |
| D. | frequency division multiplexing |
| Answer» C. code division multiplexing | |
| 59. |
does not require an external modulator. |
| A. | fsk |
| B. | dsk |
| C. | psk |
| D. | ask |
| Answer» B. dsk | |
| 60. |
The photonic layer of the SONET is similar to the of OSI model. |
| A. | network layer |
| B. | data link layer |
| C. | physical layer |
| D. | transport layer |
| Answer» D. transport layer | |
| 61. |
49 A/w. |
| A. | 0.91 μw |
| B. | 0.32 μw |
| C. | 0.312 μw |
| D. | 0.80 μw |
| Answer» E. | |
| 62. |
How many stages are possessed by the control plane? |
| A. | two |
| B. | three |
| C. | four |
| D. | five |
| Answer» C. four | |
| 63. |
                         refers to the process whereby a node finds one or more paths to possible destinations in a network. |
| A. | routing |
| B. | framing |
| C. | lightning |
| D. | cloning |
| Answer» B. framing | |
| 64. |
A Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â is a series of logical connections between the source and destination nodes. |
| A. | cell circuit |
| B. | attenuation circuit |
| C. | virtual circuit |
| D. | switched network |
| Answer» D. switched network | |
| 65. |
                       mode is temporary, selective and continuous. |
| A. | cell switching |
| B. | buffer switching |
| C. | cache |
| D. | circuit switching |
| Answer» E. | |
| 66. |
Packet switching is also called as |
| A. | frame switching |
| B. | cell switching |
| C. | trans-switching |
| D. | buffer switching |
| Answer» C. trans-switching | |
| 67. |
How many networking modes are available to establish a transmission path? |
| A. | three |
| B. | one |
| C. | two |
| D. | four |
| Answer» D. four | |
| 68. |
The full-mesh configuration is complex. |
| A. | false |
| B. | true |
| Answer» C. | |
| 69. |
The ring and star topologies are combined in a                  configuration. |
| A. | mesh |
| B. | fringe |
| C. | data |
| D. | singular |
| Answer» B. fringe | |
| 70. |
The network structure formed due to the interconnectivity patterns is known as a |
| A. | network |
| B. | struck |
| C. | topology |
| D. | d-pattern |
| Answer» D. d-pattern | |
| 71. |
In the                      topology, the data generally circulates bi-directionally. |
| A. | mesh |
| B. | bus |
| C. | star |
| D. | ring |
| Answer» C. star | |
| 72. |
The fundamentals of optical networking are divided into                areas. |
| A. | two |
| B. | one |
| C. | four |
| D. | three |
| Answer» E. | |
| 73. |
A signal carried on a dedicated wavelength from source to destination node is known as a |
| A. | light path |
| B. | light wave |
| C. | light node |
| D. | light source |
| Answer» B. light wave | |
| 74. |
                         is a multi-functional element of optical network. |
| A. | hop |
| B. | optical node |
| C. | wavelength |
| D. | optical attenuation |
| Answer» C. wavelength | |
| 75. |
A unidirectional path switching ring is a network with |
| A. | one ring |
| B. | two rings |
| C. | three rings |
| D. | four rings |
| Answer» C. three rings | |
| 76. |
Automatic protection switching in linear network is defined at the |
| A. | line layer |
| B. | section layer |
| C. | photonic layer |
| D. | path layer |
| Answer» B. section layer | |
| 77. |
A linear SONET network can be |
| A. | point-to-point |
| B. | multi-point |
| C. | both point-to-point and multi-point |
| D. | single point |
| Answer» D. single point | |
| 78. |
Which one of the following is not true about SONET? |
| A. | frames of lower rate can be synchronously time-division multiplexed into a higher-rate frame |
| B. | multiplexing is synchronous tdm |
| C. | all clocks in the network are locked to a master clock |
| D. | sts-1 provides the data rate of 622.080mbps |
| Answer» E. | |
| 79. |
In SONET, each synchronous transfer signal STS-n is composed of |
| A. | 2000 frames |
| B. | 4000 frames |
| C. | 8000 frames |
| D. | 16000 frames |
| Answer» D. 16000 frames | |
| 80. |
The photonic layer of the SONET is similar to the                      of OSI model. |
| A. | network layer |
| B. | data link layer |
| C. | physical layer |
| D. | transport layer |
| Answer» D. transport layer | |
| 81. |
The path layer of SONET is responsible for the movement of a signal |
| A. | from its optical source to its optical destination |
| B. | across a physical line |
| C. | across a physical section |
| D. | back to its optical source |
| Answer» C. across a physical section | |
| 82. |
In SONET, STS-1 level of electrical signalling has the data rate of |
| A. | 51.84 mbps |
| B. | 155.52 mbps c) 2488.320 mbps d) 622.080 mbps |
| Answer» B. 155.52 mbps c) 2488.320 mbps d) 622.080 mbps | |
| 83. |
Time division multiplexing is inverse to that of frequency division multiplexing. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 84. |
                technique involves an increase in the number of components required. |
| A. | time division multiplexing |
| B. | space division multiplexing |
| C. | code division multiplexing |
| D. | frequency division multiplexing |
| Answer» C. code division multiplexing | |
| 85. |
Which of the following is not an optical fiber component? |
| A. | fiber |
| B. | connector |
| C. | circulator |
| D. | detector |
| Answer» D. detector | |
| 86. |
In                  the optical channel bandwidth is divided into non-overlapping frequency bands. |
| A. | time division multiplexing |
| B. | frequency division multiplexing |
| C. | code division multiplexing |
| D. | de-multiplexing |
| Answer» C. code division multiplexing | |
| 87. |
How many encoding schemes are used in optical fiber communication system design requirements? |
| A. | three |
| B. | one |
| C. | two |
| D. | four |
| Answer» D. four | |
| 88. |
A multiplexing technique which does not involve the application of several message signals onto a single fiber is called as |
| A. | time division multiplexing |
| B. | frequency division multiplexing |
| C. | code division multiplexing |
| D. | space division multiplexing |
| Answer» E. | |
| 89. |
The                        incorporates a line receiver in order to convert the optical signal into the electrical regime. |
| A. | attenuator |
| B. | transmitter |
| C. | repeater |
| D. | designator |
| Answer» D. designator | |
| 90. |
                           is caused by surface tension effects between the two fiber ends during fusing. |
| A. | pre-fusion |
| B. | diffusion |
| C. | self-alignment |
| D. | splicing |
| Answer» D. splicing | |
| 91. |
A regenerative repeater is called as |
| A. | repetitive repeater |
| B. | regenerator |
| C. | attenuator |
| D. | gyrator |
| Answer» C. attenuator | |
| 92. |
                     limits the maximum distance between the optical fiber transmitter and receiver. |
| A. | attenuation |
| B. | transmission |
| C. | equipment |
| D. | fiber length |
| Answer» B. transmission | |
| 93. |
Mean splice insertion losses of 0.05 dB are obtained using multimode graded index fibers with the Springroove splice. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 94. |
                     is the unique property of the glass fiber. |
| A. | transmission |
| B. | opaque property |
| C. | ductile |
| D. | malleable |
| Answer» B. opaque property | |
| 95. |
The rounding of the fiber ends with a low energy discharge before pressing the fibers together and fusing with a stronger arc is called as |
| A. | pre-fusion |
| B. | diffusion |
| C. | crystallization |
| D. | alignment |
| Answer» B. diffusion | |
| 96. |
Which of the following is not used as a flame heating source in fusion splicing? |
| A. | microprocessor torches |
| B. | ox hydric burners |
| C. | electric arc |
| D. | gas burner |
| Answer» E. | |
| 97. |
The heating of the two prepared fiber ends to their fusing point with the application of required axial pressure between the two optical fibers is called as |
| A. | mechanical splicing |
| B. | fusion splicing |
| C. | melting |
| D. | diffusion |
| Answer» C. melting | |
| 98. |
In score and break process, which of the following is not used as a cutting tool? |
| A. | diamond |
| B. | sapphire |
| C. | tungsten carbide |
| D. | copper |
| Answer» E. | |
| 99. |
What is the main requirement with the fibers that are intended for splicing? |
| A. | smooth and oval end faces |
| B. | smooth and square end faces |
| C. | rough edge faces |
| D. | large core diameter |
| Answer» C. rough edge faces | |
| 100. |
The insertion losses of the fiber splices are much less than the Fresnel reflection loss at a butted fiber joint. |
| A. | true |
| B. | false |
| Answer» B. false | |