Compression

Multiple Choice

What is the main purpose of compression?

• To increase file size

• To reduce file size and save space

• To slow down data transmission

• To convert files into text format

Multiple Choice

Which of these is NOT a result of using compression?

• Smaller file sizes

• Faster download speeds

• Increased quality

• Reduced storage needs

Multiple Choice

What are the types of Compressions

• Compressed and Uncompressed
• Lossless and Lossy
• Static and Dynamic
• High and Low

Multiple Choice

Which type of compression permanently removes some data?

• Lossless

• Text

• Binary

• Lossy

Multiple Choice

Lossless compression is best suited for files that:

• Can afford slight quality loss

• Need to maintain full data accuracy

• Only contain images

• Are very large and unimportant

Multiple Choice

JPEG and MP3 are examples of:

• Lossy compression formats

• Lossless compression formats

• Uncompressed data formats

• Text file formats

Multiple Choice

Which of the following uses lossless compression techniques?

• JPEG

• MP3

• ZIP file

• Video files

Open Ended

What is the purpose of compression in general?

Open Ended

Name two main types of compression.

Multiple Choice

Lossy compression is most often used for:

• Software applications

• Multimedia files like images and audio

• Text files

• Database files

Multiple Choice

What is the main trade-off when using lossy compression?

• Larger file sizes

• Slower file transfer speeds

• Increased data accuracy

• Reduced quality due to data loss

Multiple Choice

Which type of compression allows files to be fully restored to their original form?

• Lossless

• Redundant

• Lossy

• Binary

Multiple Choice

Run-Length Encoding (RLE) works by:

• Adding data to make files larger

• Ignoring certain parts of data

• Encoding repeated sequences to reduce file size

• Compressing files based on color frequencies

Multiple Choice

Why is compression especially important for multimedia files?

• It improves data accuracy

• It allows more efficient storage and faster transmission

• It increases the color range in images

• It makes files easier to edit

Multiple Choice

Huffman Coding achieves compression by:

• Removing unnecessary parts of the file

• Adding extra data to fill file space

• Ignoring repeated patterns

• Using shorter codes for frequently occurring data

Multiple Choice

Which file format uses lossy compression?

• ZIP

• PNG

• JPEG

• TXT

Multiple Choice

Why might lossless compression be preferred for text files?

• It decreases data accuracy

• It reduces file size more than lossy compression

• It allows all original data to be preserved exactly

• It creates larger files for easier viewing