Process before swapping is residing in the primary memory in its original form. The regions (text, data and stack) may not be occupied fully by the process, there may be few empty slots in any of the regions and while swapping Kernel do not bother about the empty slots while swapping the process out.

After swapping the process resides in the swap (secondary memory) device. The regions swapped out will be present but only the occupied region slots but not the empty slots that were present before assigning.

Asynchronous Response Mode. HDLC communication mode involving one primary station and at least one secondary station, where either the primary or one of the secondary stations can initiate transmissions.

Dual attachment station. Device attached to both the primary and the secondary FDDI rings. Dual attachment provides redundancy for the FDDI ring: if the primary ring fails, the station can wrap the primary ring to the secondary ring, isolating the failure and retaining ring integrity. Also known as a Class A station. Compare with SAS.

The SQL data is stored in the database. The data is organized into logical components that are visible to user however data is stored as files on hard disk. Each SQL server has four system databases: master, temp, msdb and model and multiple user databases. How many user databases depend from organization to organization? The fundamental unit of data storage is page. The page size in SQL is 8KB. Every page contains a page header which is 96 bytes and stores system information such as the type of the page, amount of free space on the page, and object that owns the page. Extents are another unit which is used to allocate space to pages and indexes. A extent is 8 continuous pages or 64 KB. SQL server 2k has 3 types of data files: Primary data files which is the starting point of the database and points to other files, secondary data files comprise of data files other than primary data files and thirdly the log files to recover database in the event of a disaster.

There must be no fusing in the high side, or primary; since the booster transformer is similar to a current transformer, if the fuse should blow, an extremely high voltage could be built up on the secondary side.