Defragmentation organizes scattered files on a hard drive, encryption protects data with secret codes, and multimedia combines different types of media in one file.
Defragmentation is the process of uniting split-up files so the pieces are saved next to each other on the hard drive. This improves the efficiency of the computer when accessing the files because the hard drive does not have to search for scattered pieces. It is like organizing a messy bookshelf so that all the books are in order.
Encryption is a method of converting data into a secret code to protect it from unauthorized access. It ensures that only those with the encryption key can understand the information. It is like putting a lock on a diary to keep it private.
Multimedia refers to a combination of text, graphics, animation, audio, and video in one file. It allows for a more interactive and engaging experience for the user. It is like watching a movie that includes visuals, sound, and subtitles.