What is 'out of order execution' in modern CPUs? MCQ with Answer and Explanation

What is 'out of order execution' in modern CPUs?

A. Reordering instructions for efficiency

B. Sequential only

C. Graphics only

D. Memory management

Answer: Option A

Performance optimization.

This question belongs to: Computer Computer Hardware

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Question #1 Report Error

Wireless charging pads for devices use:

A. USB cables

B. Bluetooth

C. Electromagnetic induction

D. Infrared

Correct Answer: Option C

Explanation:
Qi standard for phones.

This question belongs to: Computer Computer Hardware

Question #2 Report Error

Which device is used in ATMs for card reading?

A. OCR

B. Joystick

C. Magnetic stripe reader

D. Flatbed scanner

Correct Answer: Option C

Explanation:
Magnetic stripe readers read card data.

This question belongs to: Computer Computer Hardware

Question #3 Report Error

The main cause of HDD failure is often:

A. Software error

B. Mechanical wear of moving parts

C. High temperature only

D. Low usage

Correct Answer: Option B

Explanation:
SSDs avoid this.

This question belongs to: Computer Computer Hardware