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Recent questions tagged physical-layer
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data communications and networking by behrouz a forouzan 4th edition, computer networks, physical layer, syllabus
What is the syllabus for physical layer(computer networks), is reading 4th(digital transmission) and 5th chapter(multiplexing and spreading) of data communication and net...
Aayush Tripathi
631
views
Aayush Tripathi
asked
Apr 8, 2019
GATE
computer-networks
physical-layer
syllabus
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0
votes
0
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Physical layer
Data Encoding and Modulation. How binary 0 and one are encoded over OC-48, OC-192, OC-256 and OC-768 cables. Which modulation techniques are used by these cables to provide 10 Gbps, 14.271 Gbps and 40 Gbps data transfer rates? Provide the manual ... of encoding, channel capacity, baud rate and modulation techniques used to get 10 Gbps, 14.271 Gbps and 40 Gbps data transfer rates.
Data Encoding and Modulation. How binary 0 and one are encoded over OC-48, OC-192, OC-256 and OC-768 cables. Which modulation techniques are used by these cables to prov...
John Doe
491
views
John Doe
asked
Nov 24, 2018
Computer Networks
data-encoding
computer-networks
modulation
physical-layer
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0
votes
1
answer
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UGC NET CSE | July 2018 | Part 2 | Question: 42
The period of a signal is 100 ms. Its frequency is ____ $100^3$ Hertz $10^{-2}$ KHz $10^{-3}$ KHz $10^5$ Hertz
The period of a signal is 100 ms. Its frequency is ____$100^3$ Hertz$10^{-2}$ KHz$10^{-3}$ KHz$10^5$ Hertz
Pooja Khatri
3.5k
views
Pooja Khatri
asked
Jul 13, 2018
Computer Networks
ugcnetcse-july2018-paper2
computer-networks
physical-layer
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0
votes
0
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4
MadeEasy Test Series: Computer Networks - Communication
To transmit 100 digitized voice channel using a channel of 20 KHz. what should be the ratio of bits/hertz if we use no guard band. assume the human voice normally contains frequencies from 0 to 4000 hz and assume 8 bits per sample.
To transmit 100 digitized voice channel using a channel of 20 KHz. what should be the ratio of bits/hertz if we use no guard band. assume the human voice normally contain...
Jaggi
577
views
Jaggi
asked
Jul 10, 2018
Computer Networks
computer-networks
physical-layer
made-easy-test-series
communication
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–
0
votes
1
answer
5
Computer Network
A researcher wishes to digitally record analog sounds for testing animal hearing with frequency of upto 100[khz]. Use Shannon's formula to find minimum signal to noise ratio (in db!) required to sustain the given data rate over a 500khz radio channel.
A researcher wishes to digitally record analog sounds for testing animal hearing with frequency of upto 100[khz]. Use Shannon's formula to find minimum signal to noise ra...
hrcule
876
views
hrcule
asked
Apr 24, 2018
Computer Networks
computer-networks
physical-layer
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–
1
votes
1
answer
6
UGC NET CSE | November 2017 | Part 3 | Question: 26
Quadrature Amplitude Modulation means changing both Frequency and phase of the carrier Frequency and Amplitude of the carrier Amplitude and phase of the carrier Amplitude and Wavelength of the carrier
Quadrature Amplitude Modulation means changing bothFrequency and phase of the carrierFrequency and Amplitude of the carrierAmplitude and phase of the carrierAmplitude and...
Arjun
1.0k
views
Arjun
asked
Nov 5, 2017
Computer Networks
ugcnetcse-nov2017-paper3
computer-networks
modulation
physical-layer
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–
0
votes
1
answer
7
UGC NET CSE | December 2010 | Part 2 | Question: 28
How much bandwidth is there in $1$ micron of spectrum at a wavelength of $1$ micron ? $300$ MHz $3$ GHz $300$ THz $30$ KHz
How much bandwidth is there in $1$ micron of spectrum at a wavelength of $1$ micron ?$300$ MHz$3$ GHz$300$ THz$30$ KHz
makhdoom ghaya
4.9k
views
makhdoom ghaya
asked
Sep 8, 2016
Computer Networks
ugcnetcse-dec2010-paper2
computer-networks
physical-layer
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–
1
votes
2
answers
8
UGC NET CSE | June 2011 | Part 2 | Question: 27
If carrier modulated by a digital bit stream, has one one of the possible phase of $0, 90, 180$ and $270$ degrees, then modulation called BPSK QPSK QAM MSK
If carrier modulated by a digital bit stream, has one one of the possible phase of $0, 90, 180$ and $270$ degrees, then modulation calledBPSKQPSKQAMMSK
makhdoom ghaya
2.2k
views
makhdoom ghaya
asked
Aug 24, 2016
Unknown Category
ugcnetcse-june2011-paper2
computer-networks
physical-layer
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–
1
votes
1
answer
9
UGC NET CSE | December 2013 | Part 2 | Question: 3
An analog signal carries 4 bits in each signal unit. If 1000 signal units are sent per second, then baud rate and bit rate of the signal are _____ and _____ 4000 bauds/sec & 1000 bps 2000 bauds/sec & 1000 bps 1000 bauds/sec & 500 bps 1000 bauds/sec & 4000 bps
An analog signal carries 4 bits in each signal unit. If 1000 signal units are sent per second, then baud rate and bit rate of the signal are _____ and _____4000 bauds/sec...
go_editor
10.0k
views
go_editor
asked
Jul 24, 2016
Computer Networks
ugcnetcse-dec2013-paper2
computer-networks
osi-model
physical-layer
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–
2
votes
1
answer
10
UGC NET CSE | June 2013 | Part 3 | Question: 21
Which one of the following media is multidrop? Shielded Twisted pair cable Unshielded Twisted pair cable Thick Coaxial cable Fiber Optic cable
Which one of the following media is multidrop?Shielded Twisted pair cableUnshielded Twisted pair cableThick Coaxial cableFiber Optic cable
go_editor
2.6k
views
go_editor
asked
Jul 16, 2016
Computer Networks
ugcnetcse-june2013-paper3
computer-networks
physical-layer
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