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Error Detection and Correction Quiz

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Which of the following is an error-detection method?

a)

Parity Check

b)

Hamming Code

c)

Checksum

d)

Both a and c

2.

What is the primary purpose of error detection in data communication?

a)

To encrypt data

b)

To ensure error-free transmission

c)

To identify errors during data transmission

d)

To retransmit the entire data

3.

In cyclic redundancy check (CRC), what is appended to the data at the sender's end?

a)

Random bits

b)

Parity bits

c)

Redundant bits (remainder)

d)

Encrypted code

4.

Which error-detection technique uses a modulo-2 division process?

a)

Hamming Code

b)

Checksum

c)

Cyclic Redundancy Check (CRC)

d)

Parity Check

5.

Which of the following is an error-correction technique?

a)

Automatic Repeat Request (ARQ)

b)

Parity Check

c)

CRC

d)

Checksum

6.

What is the main advantage of Hamming Code?

a)

It can detect and correct single-bit errors.

b)

It can only detect multiple-bit errors.

c)

It is simpler than parity checks.

d)

It requires no additional bits.

7.

In a parity check, which of the following types of parity can be used?

a)

Odd parity

b)

Even parity

c)

Both a and b

d)

None of the above

8.

What is the key difference between error detection and error correction?

a)

Error detection finds errors, and error correction fixes them.

b)

Error correction only detects errors.

c)

Error detection works only for wired networks.

d)

Error correction needs no extra bits.

9.

What is the basic principle behind the Checksum method?

a)

Adding binary values to verify data integrity

b)

Dividing data by a fixed polynomial

c)

Using redundant codes for detection

d)

Sending duplicate copies of data

10.

Which technique is used in TCP for error control?

a)

ARQ

b)

CRC

c)

Hamming Code

d)

Checksum