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Computer Networks
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Course Name
BSc IT (Bachelor of Science in Information Technology)
Subject Code BT0072 (Computer Networks )
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PART - A
PART - B
PART - C
Subject : Computer Networks
BT0072 : PART - B
| Q. 1 | Distance of the obstacle from the
transmitter is 35km and from the receiver is
45km, measured along the LOS. If the
frequency of transmission is 3GHz, necessary
clearance for the second FZ is ___ |
| | A) | 34.64m |
| B) | 11.034m | | C) | 62.74m | | D) | 44.36m | | | | | Q. 2 | State true or false regarding optical fibers.
a) Single mode fibers have 8 to 10Ym core
diameter and about 125Ym clad diameter
b) Multimode fibers typically have 50Ym core
diameter and about 125-400Ym clad diameter
c) Graded index fibe |
| | A) | a-T, b-T, c-F |
| B) | a-F, b-T, c-T | | C) | a-T, b-T, c-T | | D) |
a-T, b-F, c-F | | | | | Q. 3 | The earth station antenna has 30m
diameter and antenna on the satellite has 1.5m
diameter .Considering C band link, uplink and
down link loss is ___ and ___ |
| | A) | 99.7db, 103.6db |
| B) | 86.3db, 93.4db | | C) | 103.6db, 99.7db | | D) | 54.3db, 74.5db | | | | | Q. 4 | Advantage of SSB is are
a) Reduction of interference to other systems
b) Freedom from intermodulation due to multipath
signals.
c) Economy in high-tension power consumption |
| | A) | a, b |
| B) | b, c | | C) | a, c | | D) | a, b, c | | | | | Q. 5 | The process of detecting the signal by
multiplying the received signal by a locally
generated or recovered carrier that is
synchronous with that of the transmitted carrier
is called |
| | A) | Binary phase shift key demodulation |
| B) | Synchronous demodulation | | C) | Mux demodulator | | D) | Product demodulation | | | |
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