MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Disk fragmentation occurs when a file is broken up into pieces to fit on the disk. Because files are constantly being written, deleted and resized, fragmentation is a natural occurrence. When a file is spread out over several locations, it takes longer to read and write resulting in slow computer performance.

Detailed explanation-2: -Fragmentation makes your hard disk do extra work that can slow down your computer. Removable storage devices such as USB flash drives can also become fragmented. Disk Defragmenter in Windows rearranges fragmented data so your disks and drives can work more efficiently.

Detailed explanation-3: -File-system fragmentation occurs when a file system stores a file or directory’s contents in discontiguous ranges of disk blocks. As a file system becomes more fragmented, per-formance can drop significantly, since reading the file requires issuing multiple I/Os to disk.

Detailed explanation-4: -Fragmentation occurs when a file is saved in several sectors of a diskette.

Detailed explanation-5: -verb (used with object), de·fragged, de·frag·ging. to reorganize files on (a hard disk drive) so that the parts of each file are stored in contiguous sectors on the disk, thereby improving computer performance and maximizing disk space.