Error Detection and Correction Techniques: Master Data Integrity

Question 1

What is the primary purpose of a checksum algorithm?

Accepted Answer

Detecting errors in transmitted data

Answer

Correcting errors in transmitted data

Answer

Enhancing data security

Answer

Reducing data transmission speed

Question 2

What is the key advantage of using CRC over checksums?

Accepted Answer

Enhanced error detection capability

Answer

Faster error detection

Answer

Easier implementation

Answer

Reduced computational complexity

Question 3

Which error correction technique allows for the correction of multiple errors within a data block?

Accepted Answer

Forward Error Correction (FEC)

Answer

Automatic Repeat Request (ARQ)

Answer

Parity Check

Answer

Checksum

Question 4

What is the main drawback of using ARQ in data communication?

Accepted Answer

Increased latency

Answer

Higher bandwidth consumption

Answer

Complex implementation

Answer

Susceptibility to noise

Question 5

Which of the following is NOT a relevant factor when selecting an error detection or correction technique?

Accepted Answer

Data encryption

Answer

Data transmission speed

Answer

Error rate of the transmission channel

Answer

Cost of implementation

Question 6

In a data transmission scenario characterized by a high probability of errors, which error handling approach is most suitable?

Accepted Answer

CRC in conjunction with FEC

Answer

Sole reliance on parity check

Answer

Sole reliance on checksum

Answer

Exclusive use of ARQ

Question 7

Which error detection technique adds an extra bit to each data unit, indicating whether the number of 1's in the data unit is odd or even?

Accepted Answer

Parity check

Answer

Checksum

Answer

Cyclic redundancy check

Answer

Hamming code

Question 8

What is the primary purpose of using a cyclic redundancy check (CRC) in data communications?

Accepted Answer

To detect errors in data

Answer

To correct errors in data

Answer

To improve data compression

Answer

To detect unauthorized access to data

Question 9

Which of the following is NOT an advantage of using checksums for error detection?

Accepted Answer

Ability to detect burst errors

Answer

Simplicity of implementation

Answer

High error detection capability

Answer

Low computational overhead

Question 10

Which of the following is an example of a forward error correction (FEC) technique?

Accepted Answer

Reed-Solomon code

Answer

Parity check

Answer

Checksum

Answer

LRC

Question 11

What is the fundamental difference between error detection and error correction techniques in data communications?

Accepted Answer

Error detection techniques can only detect errors, while error correction techniques can both detect and correct errors.

Answer

Error detection techniques are more computationally intensive than error correction techniques.

Answer

Error correction techniques are only used in wired networks, while error detection techniques are used in wireless networks.

Answer

Error correction techniques are more susceptible to noise than error detection techniques.

Question 12

In a network setting that prioritizes reliable data transmission, which error detection and correction technique offers the most effective error detection capabilities?

Accepted Answer

Cyclic Redundancy Check (CRC)

Answer

Parity check

Answer

Checksum

Question 13

Which emerging trend in error detection and correction utilizes machine learning to improve data integrity, especially in wireless communication systems?

Accepted Answer

Adaptive Error Correction

Answer

Quantum Error Correction

Answer

Software-Defined Error Detection

Answer

Network Coding

Question 14

Which technological advancement revolutionized the field of error detection and correction in the 1960s?

Accepted Answer

Cyclic redundancy checks (CRCs)

Answer

Parity checks

Answer

Checksum algorithms

Answer

Forward error correction (FEC) techniques

Question 15

Which error-detecting technique uses a single bit to indicate whether the number of 1s in the transmitted data is even or odd?

Accepted Answer

Parity check

Answer

Checksum

Answer

Cyclic redundancy check (CRC)

Answer

Hamming code

Question 16

What is the primary purpose of a checksum?

Accepted Answer

To detect errors in data transmission

Answer

To correct errors in data transmission

Answer

To prevent errors from occurring in data transmission

Answer

To encrypt data for secure transmission

Question 17

Which of the following is a characteristic of a cyclic redundancy check (CRC)?

Accepted Answer

It is a polynomial-based error-detecting code

Answer

It is calculated using a sliding window

Answer

It adds a parity bit to each byte of data

Answer

It uses a Hamming code to correct errors

Question 18

What is the main advantage of using a CRC over a checksum?

Accepted Answer

CRCs can detect a wider range of errors than checksums

Answer

CRCs can correct errors, while checksums cannot

Answer

CRCs are faster to calculate than checksums

Answer

CRCs are easier to implement than checksums

Question 19

What is the key difference between FEC and ARQ?

Accepted Answer

FEC corrects errors without retransmission, while ARQ requires retransmission

Answer

ARQ corrects errors without retransmission, while FEC requires retransmission

Answer

FEC is always more effective than ARQ

Answer

ARQ is always more effective than FEC

Question 20

In which scenario are error detection and correction techniques commonly applied?

Accepted Answer

Data transmission over a network

Answer

Data storage on a hard drive

Answer

Image processing

Answer

Audio compression

Question 21

What is the primary benefit of using a block code for error correction?

Accepted Answer

It can correct multiple errors within a single block of data

Answer

It is simpler to implement than a convolutional code

Answer

It has lower latency than a convolutional code

Answer

It is more efficient than a convolutional code

Question 22

What is the key distinction between a systematic code and a non-systematic code?

Accepted Answer

Systematic codes include the original data in the encoded message, while non-systematic codes do not

Answer

Non-systematic codes include the original data in the encoded message, while systematic codes do not

Answer

Systematic codes are more efficient than non-systematic codes

Answer

Non-systematic codes are more efficient than systematic codes