Computer Science T3 Error detection

Why is it important to check for errors after data transmission?

• To ensure data is received correctly

• To increase transmission speed

• To reduce storage space

• To encrypt the data

Which of the following is NOT an error detection method mentioned in the objectives?

• Data compression

• Parity check

• Checksum

• Echo check

What are the two types of parity checks used in error detection?

• Odd and even

• High and low

• Left and right

• Up and down

Check digits are used in data entry for which of the following?

• ISBN and bar codes

• Passwords and usernames

• Emails and phone numbers

• Websites and URLs

What does ARQ stand for in the context of data transmission?

• Automatic Repeat Query

• Automated Response Queue

• Advanced Routing Query

• Automatic Random Query

What is the purpose of using an automatic repeat query (ARQ) in data transmission?

• To establish that data is correctly received

• To compress the data

• To encrypt the data

• To increase the data transmission speed

Which of the following is a possible result of transmission errors?

• Data to be lost

• Data to be compressed

• Data to be encrypted

• Data to be duplicated

Why do computers need methods for error checking during data transmission?

• To check for data transmission errors caused by interference

• To increase the speed of data transmission

• To reduce the size of data files

• To improve the graphics quality

Which of the following is NOT a method used for error checking in computers?

• Data compression

• Parity bits

• Check digits

• Check sums

Which method is used to automatically request the retransmission of data if an error is detected?

• Automatic Repeat reQuests (ARQ)

• Parity bits

• Check digits

• Echo checks