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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 | 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. 2 | The main cause for fading of waves from
satellites is/are |
| | A) | Inverse curvature of radio rays due to
refraction |
| B) | Multiple path caused by reflections or | | C) |
Multiple path caused by the presence of
additional duct in the troposphere | | D) | All the above | | | | | Q. 3 | State true or false for digital
communication.
a) Provides various means of detecting and
correcting the errors occurred during the
process of transmission of the signals.
b) High degree of security of information
cannot be maintai |
| | A) | a-T, b-F |
| B) | a-F, b-T | | C) | a-T, b-T | | D) | a-F, b-F | | | | | Q. 4 | If the sinusoidal carrier has amplitude of A
then transmitted carrier can be represented as
_____ in BPSK |
| | A) | A cos (Uot); for logic 1
A cos (Uot+4); for logic 0 |
| B) | A cos (Uot) for logic 1
A cos (Uot-4) for logic 0 | | C) | A cos (Uot+4); for logic 1
A cos (Uot-4); for logic 0 | | D) | A cos (Uot-4); for logic 1
A cos (Uot); for logic 0 | | | | | Q. 5 | QPSK requires _____ the bandwidth of the
corresponding BPSK signal. |
| | A) | Single |
| B) | Half | | C) | Two | | D) | Three | | | |
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