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Operating Systems Chapter 11
OPerating Systems Chapter 11
13
Computer Science
Undergraduate 4
11/18/2012

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Term
Binary Backup
Definition
A technique that backs up the entire contents of one or more disks drives in a binary or image format.
Term
Cookie
Definition
A text based file used by websites to obtain customized information about a user, such as the user's name, the user's password to access the site, and information about how to customize web page display.
Term
Defragmentation
Definition
The process of removing empty pockets between files and other information on a hard disk drive.
Term
Differential backup
Definition
A type of backup that backs up all files with an archive attribute, but does not remove that attribute after backup.
Term
Disk Striping
Definition
A disk storage technique that divides portions of each file over all volumes in a set as a way to minimize wear on individual disks.
Term
Fragmentation
Definition
the process of developing more more and more empty pockets of space between files on the disk due to frequent writing , deleting and modifying files and file contents.
Term
Full-file-by-file-backup
Definition
A technique that back up the entire contents of one or more disk drives on the basis of directories, subdirectories and files so that it is possible to restore a combination of any of these.
Term
Incremental Backup
Definition
A backup technique that backs up all files with an archive attribute, and then removes the attribute after backup.
Term
Page File
Definition
Also called the paging file or swap file, an allocated portion of disk storage reserved for use to supplement RAM when the available RAM is exceeded.
Term
Service Packs
Definition
Software fixes issued by the vendor to repair software problems, address compatibility issues, and add enhancements.
Term
Surface Analysis
Definition
A disk diagnostic technique that locates damaged disk areas and marks them as bad. Some surface analysis tools are destructive to data because they also format a disk. Others can run without altering data, except to move data from a damaged location to one that is not.
Term
Swap File
Definition
Also called the page file, paging file, or swap file system, an allocated portion of disk storage reserved for use to supplement RAM when the available RAM is exceeded.
Term
Virtual memory
Definition
Disk storage that is used when there is not enough RAM for a particular operation, or for all purposes currently in use.
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