What is the main purpose of using a file compression technique before uploading to cloud storage?

Question

What is the main purpose of using a file compression technique before uploading to cloud storage?

1. A. To reduce the file size and save storage space (Correct answer)
2. B. To make the file readable across different devices
3. C. To convert the file into a secure format
4. D. To encrypt the file

Correct Answer

Option A — To reduce the file size and save storage space

Detailed Solution & Explanation

The correct answer is To reduce the file size and save bandwidth.

Key Points

• Compression encodes data more efficiently, producing a smaller file that uploads faster and consumes less storage and bandwidth.
• That is its primary purpose; the other options describe different technologies — encryption provides security, and format conversion provides cross-platform readability.
• Compression alone offers no security: a ZIP file without a password is trivially opened.

Additional Information

• Two categories: lossless compression reconstructs the original exactly (ZIP, RAR, PNG, FLAC, GZIP), while lossy compression discards detail permanently for a much smaller file (JPEG, MP3, MP4).
• Text and program files must use lossless methods; photographs and audio can tolerate lossy ones.
• Compression ratio is the original size divided by the compressed size; already-compressed files such as JPEGs compress very little further.
• Archiving and compression are distinct operations — TAR bundles files without compressing, which is why `.tar.gz` combines both steps.