Dear All Students,
First I want to say Congrats to all my students.
The Performance in Recently Concluded 3-1 Externals under JNTUH is Very good. Four Sections CSE-A, CSE-B, IT-A, IT-B All Performed well.
The pass percentage of 86.17% (Out of 241 Students Approximately) is Very Good with 99 being the Highest followed by 94.
With Regards,
B VINOD KUMAR.
Wednesday, February 2, 2011
Tuesday, November 9, 2010
Marks will be Uploaded on 10-November-2010...
YOUR MARKS ARE IN SUSPENSE. SEE YOUR MARKS WHEN YOU COME FOR LAB EXAM...AROUND 90% OF THE STUDENTS GOT ABOVE 12 OR 13.
I WANT TO APPRECIATE YOU ALL. COMPARED TO FIRST INTERNAL IN THE SECOND INTERNAL AROUND 65 MEMBERS OUT OF 214 STUDENTS SECURED 20/20. AND AROUND 35 MEMBERS SCORED 19/20. AND ABOUT 30 STUDENTS SCORED 18 MARKS.
I WANT TO APPRECIATE YOU ALL MY STUDENTS.
OKAY, KNOW YOUR MARKS WHEN YOU COME TO YOUR LAB EXTERNAL EXAM.
ALL THE BEST.
I WANT TO APPRECIATE YOU ALL. COMPARED TO FIRST INTERNAL IN THE SECOND INTERNAL AROUND 65 MEMBERS OUT OF 214 STUDENTS SECURED 20/20. AND AROUND 35 MEMBERS SCORED 19/20. AND ABOUT 30 STUDENTS SCORED 18 MARKS.
I WANT TO APPRECIATE YOU ALL MY STUDENTS.
OKAY, KNOW YOUR MARKS WHEN YOU COME TO YOUR LAB EXTERNAL EXAM.
ALL THE BEST.
Tuesday, October 12, 2010
"Important Questions for Second Internal Exam"
The Following are the important Questions from UNIT-VII and UNIT-VIII. Study these questions and try to improve your averages.
All The Best for the Exam(s).
The Questions are :
UNIT-VII:
1) Explain Data Communication Character Codes.
2) With a suitable Example, explain the CRC method of Error Detection.
3) Compare and Contrast "Asynchronous and Synchronous" Serial Data Formats.
4) List and Describe the basic blocks of Asynchronous Voice-Band Modem.
5) ITU-T Voice Band Modem Specifications.
6) List and Describe the most common Modulation methods used with 56K Voice Band Modems.
UNIT-VIII:
1) Data Link Protocol Functions. Explain?
2) Commonly used Asynchronous Data-Link Protocols. Explain?
3) IBM's 83B Protocol?
4) What is Binary Synchronous Communication. Explain?
5) Synchronous Data Link Control (SDLC) Frame Format and Important fields and Synchronous Data Link Control (SDLC) Loop Configuration. Explain?
6) High Level Data Link Control (HDLC) Standards . Explain?
These are the twelve questions from Unit-VII and Unit-VIII. Later I will give the questions related to Unit-V and Unit-VI.
Prepare Well, Do well, Get Good Marks and All The Best.
* Any Queries you can mail to burogini@gmail.com
All The Best for the Exam(s).
The Questions are :
UNIT-VII:
1) Explain Data Communication Character Codes.
2) With a suitable Example, explain the CRC method of Error Detection.
3) Compare and Contrast "Asynchronous and Synchronous" Serial Data Formats.
4) List and Describe the basic blocks of Asynchronous Voice-Band Modem.
5) ITU-T Voice Band Modem Specifications.
6) List and Describe the most common Modulation methods used with 56K Voice Band Modems.
UNIT-VIII:
1) Data Link Protocol Functions. Explain?
2) Commonly used Asynchronous Data-Link Protocols. Explain?
3) IBM's 83B Protocol?
4) What is Binary Synchronous Communication. Explain?
5) Synchronous Data Link Control (SDLC) Frame Format and Important fields and Synchronous Data Link Control (SDLC) Loop Configuration. Explain?
6) High Level Data Link Control (HDLC) Standards . Explain?
These are the twelve questions from Unit-VII and Unit-VIII. Later I will give the questions related to Unit-V and Unit-VI.
Prepare Well, Do well, Get Good Marks and All The Best.
* Any Queries you can mail to burogini@gmail.com
Thursday, September 16, 2010
Important Questions from Each Unit
This is in view of your bad performance in the recent Internal Conducted dated: 15-september-2010.
Though some important questions were given you have not performed well. Loosing your average marks.
You have to study these questions compulsorily. And you have to write exams at Appropriate time that i will decide i.e some sudden exams. You have to prepare in advance for everything.
k
Important Questions follows:-
Unit I :
INTRODUCTION TO DATA COMMUNICATIONS AND NETWORKING ,
SIGNALS, NOISE, MODULATION, AND DEMODULATION
1) Give a brief description of amplitude-shift keying, frequency-shift keying, and phase-shift keying and quadrature amplitude modulation.
2) Discuss the design issues of layering?
3) What are the difference between the time domain modulation and the frequency domain modulation?
4) Explain the probability of error and bit error rate?
5) What are the difference between peer-to-peer client/server networks and dedicated client/server networks?
6) Describe the relationship between bite rate, bandwidth, and baud for 16- QAM.
7) Describe briefly the TCP/IP protocol model?
8) Give brief description of the following forms of electrical noise: man-made, thermal, correlated and impulse.
9) What is a topology? Explain the all topologies in data communications?
10) For an electronic device operating at 19 degree centigrade with a bandwidth of 14 KHz, determine the thermal noise power in watts and dBm.
11) What is Network topology? Explain five basic network topologies?
12) Explain in brief about Standard organizations for DATA Communications.
13) Explain ITU-T recommendations.
14) Explain Open System Interconnection reference model.
15) Explain Data Communications circuit arrangements
16) Explain network classifications
17) Explain Cisco Three-layer model
18) What is signal analysis? Explain amplitude frequency and phase of the signal.
19) Explain about analog modulation
20) Explain about angle modulation
21) Explain the terms: information capacity, bits, bit-rate and baud
22) Explain what M-Ary Encoding is. Relationship between Baud and Minimum Bandwidth.
23) Explain with a neat block diagram about a digital radio system.
24) Explain about Quadrature Amplitude modulation.
25) Explain Trellis Code Modulation.
Unit II:
METALLIC CABLE TRANSMISSION MEDIA:
OPTICAL FIBER TRANSMISSION MEDIA:
1) Equivalent circuit of metallic transmission line and describe the four primary constants of a transmission line.
2) Explain the different types of rays in fiber optics
3) Describe open-wire transmission lines?
4) List and explain the various types of losses associated with optical fibers
5) Explain about the metallic transmission line losses?
6) Describe the plenum and plenum cable?
7) What is an optical detector? Explain its characteristics?
8) For a given length of coaxial cable with distributed capacitance C=48.3 pF/m and distributed Inductance L=241.53 nH/m, determine the velocity factor and velocity of propagation.
9) Explain snells law for refraction? And outline its significance for optical fiber cables.
10) What is meant by mode of operation and index profile? Explain the Optical fiber configurations: Single mode step-index, multi mode step index, multi mode graded index.
11) Define the following: Guided and Un-Guided Transmission lines, Metallic Transmission Lines.
12) Describe a Transverse Electromagnetic wave and explain the difference between Transverse and Longitudinal waves.
13) Describe the characteristics of Electromagnetic waves.
14) Describe Balanced and Un-Balanced Transmission Lines
15) Explain the different types of metallic transmission lines
16) Compare and Contrast the Advantages and Dis-Advantages of optical fibers and metallic transmission lines.
17) Optical Fiber communication system block diagram draw and explain each block briefly.
18) Describe briefly the construction of Optical Fiber Cable
19) Explain the physics of light and the following terms: velocity of propagation, refraction, refractive index, critical angle, acceptance angle, acceptance cone, and numerical aperture.
20) Describe the two primary types of light sources used with optical fibers.
21) Describe the characteristics of LASER diodes.
22) Explain the different types of coupling losses in optical fibers.
23) Contrast the advantages and disadvantages of step-index, graded index, single-mode propagation and multi-mode propagation.
24) Explain electromagnetic spectrum
25) Define velocity factor, dielectric constant and tell how they detect the performance of wave propagating on transmission line.
Unit III :
DIGITAL TRANSMISSION :
MULTIPLEXING AND T CARRIERS :
1) For the following bit sequence, draw the time diagram for UPRZ, UPNRZ, BPRZ, BPNRZ, and BPRZ-AMI: 11100101100.
2) Explain the relationship between dynamic range, resolution and the number of bits in a PCM code?
3) Explain the difference between linear and non-linear PCM codes.
4) Describe the North American Digital Hierarchy.
5) Contrast delta modulation PCM and Standard PCM.
6) Describe the operation of fractional T Carriers?
7) Define quantization and describe a folded binary code?
8) Define and state the causes of foldover distortion?
9) Describe the basic T carrier formats?
10) Explain how to determine PCM line speed?
11) Briefly explain a basic message channel?
12) Explain the primary components of a single-channel PCM system?
13) Describe the superframe and extended superframe TDM formats?
14) Describe pulse width modulation?
15) What is frame synchronization? How is it achieved in a PCM-TDM system?
16) Define digital transmission. Contrast the advantages and disadvantages of digital transmission.
17) List and describe the four most common methods of pulse transmission. PAM, PWM, PPM, PCM.
18) Define and explain quantization and a folded binary code.
19) Define signal voltage to quantization noise ratio and give its relationship to resolution, dynamic range, and number of bits in a PCM code.
20) Define Companding and explain analog and digital companding.
21) Define the following terms and Describe how they effect time encoding: Transmission Voltages and DC Component, Duty Cycle, Bandwidth, Clock Recovery, Error Detection, Digital Biphase.
22) Explain European Time Division multiplexing format.
23) Briefly describe the AT & T FDM hierarchy.
24) Describe the basic concept of Wavelength Division Multiplexing. List the advantages of WDM.
25) Briefly describe the SONET standard including OC-1 and OC-48.
Unit IV:
WIRELESS COMMUNICATIONS SYSTEMS:
1) List and explain the various parameters that affect the operation of microwave system?
2) Explain the free space path loss?
3) Define FDMA, TDMA and CDMA.
4) What are the difference among FDMA, TDMA and CDMA?
5) Explain with a neat diagram the satellite communication system?
6) What are the applications of geostationary satellite?
7) Describe the satellite orbits and orbital patterns?
8) What is CDMA? What are its advantages and dis-advantages?
9) What is skip distance? Explain its significance?
10) List and explain the three satellite orbital patterns?
11) What are the optical properties of radio waves?
12) Explain the classifications of CDMA radiated power?
13) Describe electromagnetic polarization.
14) Describe rays and wavefronts and the relationship between them.
15) Explain wave attenuation, wave absorption and give relation between them.
16) Describe ground wave, space wave and sky wave propagation.
17) List the advantages and disadvantages of microwave radio communication over cable transmission facilities.
18) Explain the components that make up a radio link
19) Describe a microwave repeater.
20) Explain about satellite elevation categories.
21) Describe geosynchronous satellites.
22) What is meant by the term look angles?
23) Advantages and disadvantages of geosynchronous satellites.
24) What is the approximate range of microwave frequencies
25) Define electromagnetic radiation.
Though some important questions were given you have not performed well. Loosing your average marks.
You have to study these questions compulsorily. And you have to write exams at Appropriate time that i will decide i.e some sudden exams. You have to prepare in advance for everything.
k
Important Questions follows:-
Unit I :
INTRODUCTION TO DATA COMMUNICATIONS AND NETWORKING ,
SIGNALS, NOISE, MODULATION, AND DEMODULATION
1) Give a brief description of amplitude-shift keying, frequency-shift keying, and phase-shift keying and quadrature amplitude modulation.
2) Discuss the design issues of layering?
3) What are the difference between the time domain modulation and the frequency domain modulation?
4) Explain the probability of error and bit error rate?
5) What are the difference between peer-to-peer client/server networks and dedicated client/server networks?
6) Describe the relationship between bite rate, bandwidth, and baud for 16- QAM.
7) Describe briefly the TCP/IP protocol model?
8) Give brief description of the following forms of electrical noise: man-made, thermal, correlated and impulse.
9) What is a topology? Explain the all topologies in data communications?
10) For an electronic device operating at 19 degree centigrade with a bandwidth of 14 KHz, determine the thermal noise power in watts and dBm.
11) What is Network topology? Explain five basic network topologies?
12) Explain in brief about Standard organizations for DATA Communications.
13) Explain ITU-T recommendations.
14) Explain Open System Interconnection reference model.
15) Explain Data Communications circuit arrangements
16) Explain network classifications
17) Explain Cisco Three-layer model
18) What is signal analysis? Explain amplitude frequency and phase of the signal.
19) Explain about analog modulation
20) Explain about angle modulation
21) Explain the terms: information capacity, bits, bit-rate and baud
22) Explain what M-Ary Encoding is. Relationship between Baud and Minimum Bandwidth.
23) Explain with a neat block diagram about a digital radio system.
24) Explain about Quadrature Amplitude modulation.
25) Explain Trellis Code Modulation.
Unit II:
METALLIC CABLE TRANSMISSION MEDIA:
OPTICAL FIBER TRANSMISSION MEDIA:
1) Equivalent circuit of metallic transmission line and describe the four primary constants of a transmission line.
2) Explain the different types of rays in fiber optics
3) Describe open-wire transmission lines?
4) List and explain the various types of losses associated with optical fibers
5) Explain about the metallic transmission line losses?
6) Describe the plenum and plenum cable?
7) What is an optical detector? Explain its characteristics?
8) For a given length of coaxial cable with distributed capacitance C=48.3 pF/m and distributed Inductance L=241.53 nH/m, determine the velocity factor and velocity of propagation.
9) Explain snells law for refraction? And outline its significance for optical fiber cables.
10) What is meant by mode of operation and index profile? Explain the Optical fiber configurations: Single mode step-index, multi mode step index, multi mode graded index.
11) Define the following: Guided and Un-Guided Transmission lines, Metallic Transmission Lines.
12) Describe a Transverse Electromagnetic wave and explain the difference between Transverse and Longitudinal waves.
13) Describe the characteristics of Electromagnetic waves.
14) Describe Balanced and Un-Balanced Transmission Lines
15) Explain the different types of metallic transmission lines
16) Compare and Contrast the Advantages and Dis-Advantages of optical fibers and metallic transmission lines.
17) Optical Fiber communication system block diagram draw and explain each block briefly.
18) Describe briefly the construction of Optical Fiber Cable
19) Explain the physics of light and the following terms: velocity of propagation, refraction, refractive index, critical angle, acceptance angle, acceptance cone, and numerical aperture.
20) Describe the two primary types of light sources used with optical fibers.
21) Describe the characteristics of LASER diodes.
22) Explain the different types of coupling losses in optical fibers.
23) Contrast the advantages and disadvantages of step-index, graded index, single-mode propagation and multi-mode propagation.
24) Explain electromagnetic spectrum
25) Define velocity factor, dielectric constant and tell how they detect the performance of wave propagating on transmission line.
Unit III :
DIGITAL TRANSMISSION :
MULTIPLEXING AND T CARRIERS :
1) For the following bit sequence, draw the time diagram for UPRZ, UPNRZ, BPRZ, BPNRZ, and BPRZ-AMI: 11100101100.
2) Explain the relationship between dynamic range, resolution and the number of bits in a PCM code?
3) Explain the difference between linear and non-linear PCM codes.
4) Describe the North American Digital Hierarchy.
5) Contrast delta modulation PCM and Standard PCM.
6) Describe the operation of fractional T Carriers?
7) Define quantization and describe a folded binary code?
8) Define and state the causes of foldover distortion?
9) Describe the basic T carrier formats?
10) Explain how to determine PCM line speed?
11) Briefly explain a basic message channel?
12) Explain the primary components of a single-channel PCM system?
13) Describe the superframe and extended superframe TDM formats?
14) Describe pulse width modulation?
15) What is frame synchronization? How is it achieved in a PCM-TDM system?
16) Define digital transmission. Contrast the advantages and disadvantages of digital transmission.
17) List and describe the four most common methods of pulse transmission. PAM, PWM, PPM, PCM.
18) Define and explain quantization and a folded binary code.
19) Define signal voltage to quantization noise ratio and give its relationship to resolution, dynamic range, and number of bits in a PCM code.
20) Define Companding and explain analog and digital companding.
21) Define the following terms and Describe how they effect time encoding: Transmission Voltages and DC Component, Duty Cycle, Bandwidth, Clock Recovery, Error Detection, Digital Biphase.
22) Explain European Time Division multiplexing format.
23) Briefly describe the AT & T FDM hierarchy.
24) Describe the basic concept of Wavelength Division Multiplexing. List the advantages of WDM.
25) Briefly describe the SONET standard including OC-1 and OC-48.
Unit IV:
WIRELESS COMMUNICATIONS SYSTEMS:
1) List and explain the various parameters that affect the operation of microwave system?
2) Explain the free space path loss?
3) Define FDMA, TDMA and CDMA.
4) What are the difference among FDMA, TDMA and CDMA?
5) Explain with a neat diagram the satellite communication system?
6) What are the applications of geostationary satellite?
7) Describe the satellite orbits and orbital patterns?
8) What is CDMA? What are its advantages and dis-advantages?
9) What is skip distance? Explain its significance?
10) List and explain the three satellite orbital patterns?
11) What are the optical properties of radio waves?
12) Explain the classifications of CDMA radiated power?
13) Describe electromagnetic polarization.
14) Describe rays and wavefronts and the relationship between them.
15) Explain wave attenuation, wave absorption and give relation between them.
16) Describe ground wave, space wave and sky wave propagation.
17) List the advantages and disadvantages of microwave radio communication over cable transmission facilities.
18) Explain the components that make up a radio link
19) Describe a microwave repeater.
20) Explain about satellite elevation categories.
21) Describe geosynchronous satellites.
22) What is meant by the term look angles?
23) Advantages and disadvantages of geosynchronous satellites.
24) What is the approximate range of microwave frequencies
25) Define electromagnetic radiation.
Friday, September 3, 2010
Notes for rest of the chapters
hiii dear all students,
You are having a good book for Data Communications Systems "Wayne Tomasi". The total syllabus is covered in that book (i mean 100 percent covered). So, i request you to go through the text book and if you are having any doubts you can contact me during working hours or through this blog.
All the best and prepare well for the internal exams.
If anybody have prepared notes, they can send me the soft copy to the mail id :
burogini@gmail.com.
I will update it in this blog and that will be helpfull to all the other guys/gals.
So, do work hard, prepare well for the exam.
Important note: we are going to cover till sixth unit by september ending or first week of october. So, do refer text book and come with doubts related to subject.
And we do participate in Interactive sessions*
*-if you wish after first internal exam.
ALL THE BEST.
You are having a good book for Data Communications Systems "Wayne Tomasi". The total syllabus is covered in that book (i mean 100 percent covered). So, i request you to go through the text book and if you are having any doubts you can contact me during working hours or through this blog.
All the best and prepare well for the internal exams.
If anybody have prepared notes, they can send me the soft copy to the mail id :
burogini@gmail.com.
I will update it in this blog and that will be helpfull to all the other guys/gals.
So, do work hard, prepare well for the exam.
Important note: we are going to cover till sixth unit by september ending or first week of october. So, do refer text book and come with doubts related to subject.
And we do participate in Interactive sessions*
*-if you wish after first internal exam.
ALL THE BEST.
Subscribe to:
Posts (Atom)