Understanding Compression Techniques

What is the primary goal of lossy compression methods like MP3?

• To convert files into text format

• To increase file size for better quality

• To reduce file size while maintaining some quality

• To completely eliminate all data

How does JPEG compression reduce image file size?

• By separating color from brightness and discarding some data

• By removing all color information

• By increasing the resolution of the image

• By converting images to grayscale

What is a key characteristic of lossless compression?

• It permanently removes some data

• It allows the original data to be perfectly reconstructed

• It only works with audio files

• It is only used for video compression

Which compression method is often used for text-based data?

• Run Length Encoding

• JPEG

• MP3

• Huffman Coding

In Run Length Encoding, how are sequences of pixels stored?

• As binary code

• As frequency data pairs

• As individual pixel values

• As color gradients

What is the main advantage of using Run Length Encoding for images?

• It enhances image brightness

• It converts images to text

• It reduces the number of bits needed to store repetitive data

• It increases the color depth

Which of the following is NOT a lossy compression format?

• JPEG

• MP4

• MP3

• PNG

Why is lossless compression important for text-based documents?

• Because it ensures no data is lost, which is crucial for accuracy

• Because it reduces the file size significantly

• Because it enhances the readability of the text

• Because it converts text to audio

Which of the following is an example of a lossless compression format?

• WMV

• MP3

• GIF

• JPEG

What is a common misconception about image compression?

• That image compression always increases quality

• That images cannot be compressed at all

• That images can only be compressed using lossy methods

• That image compression is only for black and white images