Grade 4 Quiz

What is the number system that computers use?

• Decimal

• Binary

• Analog

• Hexadecimal

What is a single "bit" in the binary system?

• A byte

• A kilobyte

• A single 1 or 0

• A pixel

What are digital images made up of?

• Audio waves

• Pixels

• Binary numbers

• ASCII codes

How do computers understand sounds?

• They are converted into electrical signals and then binary form.

• They are directly translated into decimal numbers.

• They are stored as text files.

• They are converted into images.

Which computer component is considered the "brain" of the computer?

• RAM

• Hard Disk Drive

• CPU

• E-waste

What is the purpose of the cache?

• To permanently store all of your files.

• To convert sounds to binary.

• To temporarily store data for the CPU.

• To connect different parts of the CPU.

Which of the following is a type of long-term memory for a computer?

• RAM

• Hard Disk Drive (HDD)

• Cache

• Control Unit

What is e-waste?

• A type of solid-state drive.

• A component of the CPU.

• Broken electronic equipment.

• An online communication tool.

What is the purpose of a backup?

• To make a single copy of a file that cannot be corrupted.

• To delete unnecessary files.

• To make an extra copy of a file in case the original is lost.

• To store files in a cloud-based folder.

Which of the following is a small and portable hard drive that can be plugged into a computer's USB port?

• External Hard Drive

• Flash Drive

• Solid State Drive

• Cloud Storage