File Size and Compression

Why is data compression important in digital systems?

• It increases the file size

• It helps reduce transmission time and storage space

• It improves file security

• It slows down data retrieval

Which of the following is an example of a lossy compression method?

• ZIP

• PNG

• MP3

• RAR

Lossy compression is often used in audio and video files.

• True
• False

lossless compression is often used in images and text files

• True
• False

An image row contains the following pixel colour values: Red, Red, Red, Blue, Blue, Green. How would Run-Length Encoding (RLE) compress this row?

• R1, R1, R1, B1, B1, G1

• Red3Blue2Green1

• 3Red, 2Blue, 1Green

A key advantage of using lossless compression methods-

• Smaller file size than lossy

• No color data is stored

• Image quality is preserved

• It requires special hardware to decode

An uncompressed bitmap image has a resolution of 100 × 200 pixels and a colour depth of 8 bits per pixel.
What is the file size of the image in kilobytes?

______________, sample resolution, and duration determine the size of an audio file.

Which of the following affects the file size of a bitmap image?

• Image Resolution

• Disk Space

• Color depth

• File name

A 64-second mono audio clip is recorded with a sample rate of 1024 kHz and 32-bit resolution.
What is the size of the sound file in Mebibytes?