InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
When X and Y are statistically independent, then I (x,y) is(a) 1(b) 0(c) Ln 2(d) Cannot be determinedThis question was posed to me during an online interview.Asked question is from Information and Coding in division Error Detection & Channel Coding of Digital Communications |
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Answer» Correct answer is (b) 0 |
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| 2. |
When the base of the logarithm is 2, then the unit of measure of information is(a) Bits(b) Bytes(c) Nats(d) None of the mentionedI have been asked this question in exam.I want to ask this question from Information and Coding in chapter Error Detection & Channel Coding of Digital Communications |
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Answer» The correct CHOICE is (a) BITS |
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| 3. |
Coded system are inherently capable of better transmission efficiency than the uncoded system.(a) True(b) FalseThis question was addressed to me in final exam.Enquiry is from Information and Coding topic in portion Error Detection & Channel Coding of Digital Communications |
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Answer» CORRECT choice is (a) True Explanation: Yes, the coded systems are capable of BETTER transmission EFFICIENCY than the uncoded SYSTEM. |
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| 4. |
Lempel-Ziv algorithm is(a) Variable to fixed length algorithm(b) Fixed to variable length algorithm(c) Fixed to fixed length algorithm(d) Variable to variable length algorithmThe question was asked in my homework.The question is from Information and Coding topic in section Error Detection & Channel Coding of Digital Communications |
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Answer» RIGHT OPTION is (a) Variable to fixed LENGTH algorithm Explanation: Lempel-Ziv algorithm is a variable to fixed length algorithm. |
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| 5. |
The method of converting a word to stream of bits is called as(a) Binary coding(b) Source coding(c) Bit coding(d) Cipher codingThis question was posed to me during an online interview.This interesting question is from Information and Coding topic in division Error Detection & Channel Coding of Digital Communications |
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Answer» Correct CHOICE is (B) Source coding |
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| 6. |
Which is more efficient method?(a) Encoding each symbol of a block(b) Encoding block of symbols(c) Encoding each symbol of a block & Encoding block of symbols(d) None of the mentionedThe question was asked during a job interview.My question comes from Information and Coding in chapter Error Detection & Channel Coding of Digital Communications |
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Answer» Right answer is (B) ENCODING BLOCK of symbols |
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| 7. |
Entropy of a random variable is(a) 0(b) 1(c) Infinite(d) Cannot be determinedThis question was posed to me in an interview for job.This is a very interesting question from Information and Coding in chapter Error Detection & Channel Coding of Digital Communications |
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Answer» Correct choice is (C) Infinite |
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| 8. |
The self information of random variable is(a) 0(b) 1(c) Infinite(d) Cannot be determinedI had been asked this question by my school principal while I was bunking the class.My question is taken from Information and Coding topic in section Error Detection & Channel Coding of Digital Communications |
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Answer» The correct OPTION is (c) Infinite |
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| 9. |
The event with minimum probability has least number of bits.(a) True(b) FalseThis question was posed to me in an interview for internship.I would like to ask this question from Information and Coding in section Error Detection & Channel Coding of Digital Communications |
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Answer» Right answer is (b) False |
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| 10. |
When probability of error during transmission is 0.5, it indicates that(a) Channel is very noisy(b) No information is received(c) Channel is very noisy & No information is received(d) None of the mentionedThis question was posed to me in a job interview.This intriguing question originated from Information and Coding in division Error Detection & Channel Coding of Digital Communications |
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Answer» RIGHT answer is (c) Channel is very NOISY & No information is received To explain I would say: When probability of error during transmission is 0.5 then the channel is very noisy and THUS no information is received. |
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| 11. |
Binary Huffman coding is a(a) Prefix condition code(b) Suffix condition code(c) Prefix & Suffix condition code(d) None of the mentionedThis question was posed to me in an international level competition.This interesting question is from Information and Coding topic in chapter Error Detection & Channel Coding of Digital Communications |
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Answer» RIGHT option is (a) Prefix CONDITION code To elaborate: BINARY Huffman CODING is a prefix condition code. |
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| 12. |
The unit of average mutual information is(a) Bits(b) Bytes(c) Bits per symbol(d) Bytes per symbolThis question was posed to me during an online exam.My doubt stems from Information and Coding topic in portion Error Detection & Channel Coding of Digital Communications |
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Answer» The correct ANSWER is (a) BITS |
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| 13. |
Self information should be(a) Positive(b) Negative(c) Positive & Negative(d) None of the mentionedThe question was asked in a job interview.My enquiry is from Information and Coding topic in portion Error Detection & Channel Coding of Digital Communications |
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Answer» The CORRECT CHOICE is (a) Positive |
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| 14. |
Interpolation is a method of(a) Interrelating(b) Estimating(c) Integrating(d) CombiningThis question was posed to me during an interview.Origin of the question is Interpolation topic in section Error Detection & Channel Coding of Digital Communications |
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Answer» RIGHT ANSWER is (b) Estimating The BEST explanation: Interpolation is a METHOD of estimating the VALUE of the function. |
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| 15. |
Interpolation means(a) Adding new data points(b) Only aligning old data points(c) Only removing old data points(d) None of the mentionedI have been asked this question by my school teacher while I was bunking the class.I need to ask this question from Interpolation topic in portion Error Detection & Channel Coding of Digital Communications |
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Answer» RIGHT CHOICE is (a) Adding new DATA points Easy EXPLANATION: Interpolation is a method of adding new data points within the range of a discrete set of KNOWN data points. |
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| 16. |
Gaussian process is a _____ interpolation process.(a) Linear(b) Non linear(c) Not an interpolation process(d) None of the mentionedThis question was addressed to me by my college director while I was bunking the class.I'm obligated to ask this question of Interpolation topic in division Error Detection & Channel Coding of Digital Communications |
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Answer» Correct option is (a) LINEAR |
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| 17. |
Which is more expensive?(a) Polynomial interpolation(b) Linear interpolation(c) Polynomial & Linear interpolation(d) None of the mentionedI got this question by my school teacher while I was bunking the class.This question is from Interpolation in portion Error Detection & Channel Coding of Digital Communications |
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Answer» The CORRECT answer is (a) POLYNOMIAL INTERPOLATION |
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| 18. |
Error is equal to(a) Distance between the data points(b) Square of the distance between the data points(c) Half the distance between the data points(d) None of the mentionedI had been asked this question in exam.The question is from Interpolation topic in chapter Error Detection & Channel Coding of Digital Communications |
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Answer» Correct option is (B) Square of the distance between the DATA points |
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| 19. |
Which produces smoother interpolants?(a) Polynomial interpolation(b) Spline interpolation(c) Polynomial & Spline interpolation(d) None of the mentionedI got this question in my homework.My doubt is from Interpolation topic in chapter Error Detection & Channel Coding of Digital Communications |
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| 20. |
Linear interpolation is(a) Easy(b) Precise(c) Easy & Precise(d) None of the mentionedI have been asked this question in an online interview.I want to ask this question from Interpolation in section Error Detection & Channel Coding of Digital Communications |
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Answer» The correct CHOICE is (a) Easy |
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| 21. |
Interpolation is done by(a) Curve fitting(b) Regression analysis(c) Curve fitting & Regression analysis(d) None of the mentionedThe question was asked during an online exam.Enquiry is from Interpolation in chapter Error Detection & Channel Coding of Digital Communications |
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Answer» CORRECT option is (c) CURVE fitting & Regression ANALYSIS The BEST I can explain: Interpolating the value requires or is DONE by curve fitting and regression analysis. |
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| 22. |
A rate distortion function is a(a) Concave function(b) Convex function(c) Increasing function(d) None of the mentionedThis question was posed to me during an online interview.Question is taken from Codes and Coding Technique in portion Error Detection & Channel Coding of Digital Communications |
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Answer» Correct OPTION is (b) Convex function |
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| 23. |
Interpolation provides a mean for estimating functions(a) At the beginning points(b) At the ending points(c) At the intermediate points(d) None of the mentionedI got this question in an international level competition.This question is from Interpolation in chapter Error Detection & Channel Coding of Digital Communications |
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| 24. |
Interpolation methods are(a) Linear interpolation(b) Piecewise constant interpolation(c) Polynomial interpolation(d) All of the mentionedThis question was addressed to me by my school principal while I was bunking the class.This is a very interesting question from Interpolation in section Error Detection & Channel Coding of Digital Communications |
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Answer» Right ANSWER is (d) All of the mentioned |
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| 25. |
Which are uniquely decodable codes?(a) Fixed length codes(b) Variable length codes(c) Fixed & Variable length codes(d) None of the mentionedI have been asked this question in an interview for job.My question is from Codes and Coding Technique topic in division Error Detection & Channel Coding of Digital Communications |
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Answer» The CORRECT option is (a) FIXED length CODES |
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| 26. |
Which achieves greater compression?(a) Lossless coding(b) Lossy coding(c) Lossless & Lossy coding(d) None of the mentionedThis question was posed to me during an internship interview.Enquiry is from Codes and Coding Technique topic in chapter Error Detection & Channel Coding of Digital Communications |
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Answer» The correct answer is (B) LOSSY coding |
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| 27. |
Which reduces the size of the data?(a) Source coding(b) Channel coding(c) Source & Channel coding(d) None of the mentionedThe question was posed to me in examination.The question is from Codes and Coding Technique in portion Error Detection & Channel Coding of Digital Communications |
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Answer» Correct ANSWER is (a) SOURCE CODING |
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| 28. |
A code is a mapping from(a) Binary sequence to dicrete set of symbols(b) Discrete set of symbols to binary sequence(c) All of the mentioned(d) None of the mentionedI had been asked this question in an internship interview.Question is taken from Codes and Coding Technique topic in division Error Detection & Channel Coding of Digital Communications |
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Answer» The CORRECT OPTION is (b) Discrete set of SYMBOLS to binary sequence |
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| 29. |
In digital image coding which image must be smaller in size?(a) Input image(b) Output image(c) Input & Output image(d) None of the mentionedI had been asked this question by my school teacher while I was bunking the class.Question is from Codes and Coding Technique in portion Error Detection & Channel Coding of Digital Communications |
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Answer» The CORRECT OPTION is (b) Output image |
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| 30. |
Which coding method uses entropy coding?(a) Lossless coding(b) Lossy coding(c) Lossless & Lossy coding(d) None of the mentionedThis question was addressed to me by my school principal while I was bunking the class.Asked question is from Codes and Coding Technique topic in division Error Detection & Channel Coding of Digital Communications |
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Answer» Right answer is (B) Lossy CODING |
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| 31. |
ASCII code is a(a) Fixed length code(b) Variable length code(c) Fixed & Variable length code(d) None of the mentionedThe question was asked in final exam.The query is from Codes and Coding Technique in chapter Error Detection & Channel Coding of Digital Communications |
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Answer» The correct choice is (a) FIXED LENGTH code |
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| 32. |
Mutual information should be(a) Positive(b) Negative(c) Positive & Negative(d) None of the mentionedI got this question at a job interview.The query is from Codes and Coding Technique topic in chapter Error Detection & Channel Coding of Digital Communications |
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Answer» RIGHT answer is (c) POSITIVE & Negative For explanation: Mutual information can also be negative. |
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| 33. |
In symmetric key cryptosystem, who knows the key?(a) Sender(b) Receiver(c) Sender & Receiver(d) None of the mentionedThis question was posed to me during an online exam.The doubt is from Error Detection and Correction 2 in portion Error Detection & Channel Coding of Digital Communications |
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Answer» RIGHT answer is (c) SENDER & RECEIVER To elaborate: In symmetric key CRYPTOSYSTEM, both sender and receiver knows the same key. |
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| 34. |
While recovering signal, which gets attenuated more?(a) Low frequency component(b) High frequency component(c) Low & High frequency component(d) None of the mentionedI got this question during a job interview.Asked question is from Codes and Coding Technique in portion Error Detection & Channel Coding of Digital Communications |
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Answer» The correct choice is (B) High frequency component |
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| 35. |
Which has better minimum distance?(a) Check sum(b) Cyclic redundancy check(c) Check sum & Cyclic redundancy check(d) None of the mentionedThis question was posed to me during an interview.Enquiry is from Error Detection and Correction 2 topic in portion Error Detection & Channel Coding of Digital Communications |
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Answer» The correct answer is (B) Cyclic redundancy CHECK |
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| 36. |
Which is more complex?(a) Encoding(b) Decoding(c) Encoding & Decoding(d) None of the mentionedThe question was posed to me in an online interview.Enquiry is from Error Detection and Correction 2 in chapter Error Detection & Channel Coding of Digital Communications |
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Answer» Right option is (B) DECODING |
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| 37. |
Which operates on continuous stream of data?(a) Block codes(b) Convolutional codes(c) Block & Convolutional codes(d) None of the mentionedThe question was posed to me in quiz.I would like to ask this question from Error Detection and Correction 2 topic in portion Error Detection & Channel Coding of Digital Communications |
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Answer» Correct OPTION is (b) Convolutional CODES |
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| 38. |
Digital signals are easy for(a) Storage(b) Handling(c) Time dilation(d) All of the mentionedThe question was asked during an interview for a job.The doubt is from Error Detection and Correction 2 topic in division Error Detection & Channel Coding of Digital Communications |
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Answer» The correct option is (d) All of the mentioned |
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| 39. |
Which are forward error correcting codes?(a) Block codes(b) Convolutional codes(c) Block & Convolutional codes(d) None of the mentionedThis question was posed to me in an international level competition.I would like to ask this question from Error Detection and Correction 2 topic in section Error Detection & Channel Coding of Digital Communications |
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Answer» Right answer is (c) BLOCK & Convolutional CODES |
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| 40. |
Which is used to protect privacy of the information?(a) Compression coding(b) Source coding(c) Cipher coding(d) None of the mentionedI had been asked this question in my homework.I need to ask this question from Error Detection and Correction 2 topic in chapter Error Detection & Channel Coding of Digital Communications |
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Answer» The correct CHOICE is (c) Cipher coding |
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| 41. |
Which gets less affected by noise?(a) Error correction(b) Error detection(c) Error correction & detection(d) None of the mentionedI got this question in a national level competition.This key question is from Error Detection and Correction 2 topic in division Error Detection & Channel Coding of Digital Communications |
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Answer» Right answer is (b) ERROR DETECTION |
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| 42. |
Which needs more check bits?(a) Error correction(b) Error detection(c) Error correction & detection(d) None of the mentionedThis question was posed to me in an interview.My doubt stems from Error Detection and Correction 2 in portion Error Detection & Channel Coding of Digital Communications |
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Answer» Right OPTION is (a) Error CORRECTION |
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| 43. |
Which needs re-sending of signal?(a) Error correction(b) Error detection(c) Error correction & detection(d) None of the mentionedThe question was asked in an interview for job.This key question is from Error Detection and Correction 2 topic in chapter Error Detection & Channel Coding of Digital Communications |
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Answer» Correct ANSWER is (b) ERROR DETECTION |
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| 44. |
Which can detect two bit errors?(a) Parity check(b) Cyclic redundancy check(c) Parity & Cyclic redundancy check(d) None of the mentionedI got this question in an interview.My doubt is from Error Detection and Correction 1 topic in division Error Detection & Channel Coding of Digital Communications |
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Answer» Correct choice is (b) Cyclic redundancy check |
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| 45. |
CRC uses(a) Multiplication(b) Binary division(c) Multiplication & Binary division(d) None of the mentionedThis question was posed to me in an interview for internship.My doubt is from Error Detection and Correction 1 in section Error Detection & Channel Coding of Digital Communications |
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Answer» Right CHOICE is (C) MULTIPLICATION & Binary division |
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| 46. |
Which is more efficient?(a) Parity check(b) Cyclic redundancy check(c) Parity & Cyclic redundancy check(d) None of the mentionedThis question was addressed to me during a job interview.Asked question is from Error Detection and Correction 1 topic in section Error Detection & Channel Coding of Digital Communications |
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Answer» Right answer is (B) Cyclic REDUNDANCY CHECK |
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| 47. |
How error detection and correction is done?(a) By passing it through equalizer(b) By passing it through filter(c) By amplifying it(d) By adding redundancy bitsI have been asked this question in final exam.This interesting question is from Error Detection and Correction 1 in division Error Detection & Channel Coding of Digital Communications |
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Answer» Right choice is (d) By adding REDUNDANCY BITS |
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| 48. |
Which has continuous transmission?(a) Asynchronous(b) Synchronous(c) Asynchronous & Synchronous(d) None of the mentionedThis question was addressed to me in exam.Question is from Error Detection and Correction 1 in portion Error Detection & Channel Coding of Digital Communications |
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Answer» The correct option is (B) Synchronous |
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| 49. |
In synchronous transmission, receiver must stay synchronous for(a) 4 bits(b) 8 bits(c) 9 bits(d) 16 bitsThe question was asked in exam.This is a very interesting question from Error Detection and Correction 1 topic in section Error Detection & Channel Coding of Digital Communications |
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Answer» Right answer is (C) 9 bits |
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| 50. |
Which requires bit transitions?(a) Asynchronous(b) Synchronous(c) Asynchronous & Synchronous(d) None of the mentionedThe question was posed to me in unit test.The origin of the question is Error Detection and Correction 1 topic in division Error Detection & Channel Coding of Digital Communications |
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Answer» Correct answer is (b) Synchronous |
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