Computer

Correct answer: A

I is incorrect: Graphics processing unit → Processor suited to many parallel operations. It is widely used for graphics and other parallel workloads. II is incorrect: Binary number system → Base two representation. It uses the digits zero and one.

Correct answer: D

It reduces average access time for frequently used data.

Correct answer: A

I is incorrect: Lossy compression → Some information is discarded. It often gives smaller media files at a quality cost. II is incorrect: Power supply unit → Converts input electrical power for computer components. It supplies regulated voltages required by the system.

Correct answer: B

It is used in cheque processing.

Correct answer: C

I is correct: Hexadecimal number system → Base sixteen representation. It uses 0–9 and A–F. II is incorrect: Unicode → Standard for representing text characters. It supports scripts beyond the basic Latin alphabet.

Correct answer: A

It is widely used for graphics and other parallel workloads.

Correct answer: B

I is incorrect: Unicode → Standard for representing text characters. It supports scripts beyond the basic Latin alphabet. II is correct: Optical mark recognition → Detection of filled marks on a form. It is commonly used for machine-scored answer sheets.

Correct answer: A

It is suitable when every bit must be preserved.

Correct answer: D

I is correct: Uninterruptible power supply → Temporary backup power during supply interruption. It can allow safe shutdown when mains power fails. II is correct: Magnetic ink character recognition → Reading specially printed magnetic characters. It is used in cheque processing.

Correct answer: A

It uses 0–9 and A–F.

Correct answer: C

I is incorrect: Unicode → Standard for representing text characters. It supports scripts beyond the basic Latin alphabet. II is incorrect: Touchscreen → Combined display and pointing input surface. The same surface provides output and receives touch input.

Correct answer: D

It supplies regulated voltages required by the system.

Correct answer: C

I is incorrect: Magnetic ink character recognition → Reading specially printed magnetic characters. It is used in cheque processing. II is correct: Hexadecimal number system → Base sixteen representation. It uses 0–9 and A–F.

Correct answer: B

I is correct: Uninterruptible power supply → Temporary backup power during supply interruption. It can allow safe shutdown when mains power fails. II is incorrect: Optical mark recognition → Detection of filled marks on a form. It is commonly used for machine-scored answer sheets.

Correct answer: D

It provides sockets, slots and interconnections.

Correct answer: C

I is incorrect: Lossy compression → Some information is discarded. It often gives smaller media files at a quality cost. II is incorrect: Uninterruptible power supply → Temporary backup power during supply interruption. It can allow safe shutdown when mains power fails.

Correct answer: D

It uses the digits zero and one.

Correct answer: B

I is incorrect: Graphics processing unit → Processor suited to many parallel operations. It is widely used for graphics and other parallel workloads. II is correct: Lossless compression → Original data can be reconstructed exactly. It is suitable when every bit must be preserved.

Correct answer: A

OCR differs from simply storing a scanned picture.

Correct answer: D

I is incorrect: Optical mark recognition → Detection of filled marks on a form. It is commonly used for machine-scored answer sheets. II is correct: Lossy compression → Some information is discarded. It often gives smaller media files at a quality cost.

Correct answer: A

The same surface provides output and receives touch input.

Correct answer: D

I is correct: Lossless compression → Original data can be reconstructed exactly. It is suitable when every bit must be preserved. II is correct: Binary number system → Base two representation. It uses the digits zero and one.

Correct answer: C

Registers hold operands, addresses or intermediate results.

Correct answer: A

I is correct: Optical character recognition → Conversion of text images into machine-readable characters. OCR differs from simply storing a scanned picture. II is incorrect: Graphics processing unit → Processor suited to many parallel operations. It is widely used for graphics and other parallel workloads.

Correct answer: B

It supports scripts beyond the basic Latin alphabet.