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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 - A
| Q. 1 | Which is the most reliable topology? |
| | A) | Mesh |
| B) | Star | | C) | Bus | | D) | Ring | | | | | Q. 2 | Bit rate of vocoders is ___ |
| | A) | 24 Kb/s |
| B) | 1.2 to 2.4 Kb/s | | C) |
12kb/s | | D) | 10kbps | | | | | Q. 3 | Which type of cabling is suitable for office
cabling? |
| | A) | Thick Coax |
| B) | Thin Coax | | C) | Unshielded Twisted Pair | | D) | Fiber Optics | | | | | Q. 4 | ___ can be used to prevent outsider from
cracking into the intranet. |
| | A) | Wirewall |
| B) | Firewall | | C) | Hubs | | D) | UTP cable | | | | | Q. 5 | The device which is the combination of
modulator and demodulator is |
| | A) | Demultiplexer |
| B) | Integrator | | C) | Modem | | D) | Multiplexer | | | | | Q. 6 | The function of Repeaters is to |
| | A) | Mix the modulated signal with the carrier
frequency |
| B) | Eliminate noise and distortion | | C) | retransmits signals in case of network failure | | D) | Act as the receiver at the receiving station | | | | | Q. 7 | Strength of the radio signal diminishes
proportionately to the ___ of the distance it
travels
|
| | A) | Square |
| B) | Half | | C) | Four times | | D) | Square root | | | | | Q. 8 | Bell 103 answer modem ___ frequency to
transmit binary 0. |
| | A) | 1070Hz |
| B) | 2025Hz | | C) | 2225Hz | | D) | 1270Hz | | | | | Q. 9 | Bandwidth for return to zero waveform is
___ the bandwidth of NRZ signaling. |
| | A) | Equal to |
| B) | Half of | | C) | Twice | | D) | Four times | | | | | Q. 10 | An analog signal of 2KHz bandwidth is
represented by its samples. This signal can be
completely recovered only if the sampling rate
is at least ___ |
| | A) | 1KHz |
| B) | 4KHz | | C) | <2KHz | | D) | 0 | | | |
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