Understanding Compression Techniques

What is compression in the context of computer files?

• Compression is the process of reducing the size of computer files by encoding data more efficiently.

• Compression is a method of organizing files into folders for better management.

• Compression refers to the process of deleting files to save space.

• Compression is the process of increasing the size of computer files.

What are the two main types of compression?

• Static and dynamic compression

• Lossless and lossy compression

• Encrypted and decrypted compression

• Zipped and unzipped compression

What does lossy compression do to a file?

• Lossy compression increases file size by adding more data.

• Lossy compression makes a file completely lossless.

• Lossy compression only changes the file format without affecting data.

• Lossy compression reduces file size by permanently removing some data.

Can lossy compression be used for text files? Why or why not?

• Lossy compression is ideal for text files to save space.

• Yes, lossy compression can reduce file size for text files.

• No, lossy compression cannot be used for text files.

• Text files can benefit from lossy compression techniques.

What is one advantage of using compression when sending emails?

• Faster transmission times and lower bandwidth usage.

• More complex email formatting requirements.

• Higher chances of email being marked as spam.

• Increased file size and slower delivery.

How does compression help in storing large files on a computer?

• Compression increases the size of files for better organization.

• Compression has no effect on the amount of storage used.

• Compression makes files incompatible with most software.

• Compression helps in storing large files by reducing their size, allowing more efficient use of storage space.

What is a common use of compression when transferring files on a USB?

• To change file formats for compatibility.

• To reduce file size for faster transfer.

• To encrypt files for security during transfer.

• To increase file size for better quality.

What happens to the deleted parts of a file when using lossy compression?

• The deleted parts are compressed and saved for future use.

• The deleted parts can be easily restored later.

• The deleted parts are stored in a temporary folder.

• The deleted parts are permanently removed and cannot be recovered.

What is the main goal of compression?

• To improve data security.

• To enhance data quality.

• To increase the size of data.

• To reduce the size of data.

Why might someone choose lossless compression over lossy compression?

• Someone might choose lossless compression to retain all original data and ensure no quality loss.

• Lossy compression retains all original data.

• Lossless compression reduces file size more than lossy compression.

• Lossless compression is faster than lossy compression.