Data Storage and Compression Quiz

What is the basic unit of all computing memory storage?

• Kilobyte

• Byte

• Bit

• Nibble

How many bits are there in one byte?

• 4

• 8

• 16

• 32

What is the equivalent denary value of 1 terabyte (1 TB)?

• 1,000,000,000 bytes

• 1,000,000,000,000 bytes

• 1,000,000,000,000,000 bytes

• 1,000,000 bytes

Which system is more accurate for measuring memory size?

• Binary system

• SI system

• Decimal system

• IEC system

How is the file size of an image calculated?

• Image resolution - Colour depth

• Image resolution ÷ Colour depth

• Image resolution + Colour depth

• Image resolution × Colour depth

What is the size of a mono sound file calculated as?

• Sample rate - Sample resolution - Length of sample

• Sample rate ÷ Sample resolution ÷ Length of sample

• Sample rate + Sample resolution + Length of sample

• Sample rate × Sample resolution × Length of sample

What does lossy file compression do?

• Compresses without losing quality

• Increases file size

• Eliminates unnecessary data

• Retains all original data

How many bytes are in 1 gibibyte (1 GiB)?

• 1,073,741,824 bytes

• 1,024 bytes

• 1,000,000,000 bytes

• 1,048,576 bytes

What is the purpose of data compression?

• To reduce file quality

• To save storage space

• To slow down data transfer

• To increase file size

What is the size of a 60-minute stereo audio recording sampled at 44.1 kHz with a resolution of 16 bits?

• 540 MiB

• 500 MiB

• 635 MiB

• 605 MiB