CertiGuide to Network+  9  Glossary

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Mirrored volume

A fault-tolerant volume that duplicates data on two physical disks. The mirror is always located on a different disk. If one of the physical disks fails, the data on the failed disk becomes unavailable, but the system continues to operate by using the unaffected disk. A mirrored volume is slower than a RAID-5 volume in read operations but faster in write operations. Mirrored volumes can only be created on dynamic disks. In Windows NT 4.0, a mirrored volume was known as a mirror set.

Management Information System. A.K.A. (IS) Information Systems, (IT) Information Technology (ies) or (DP) Data Processing. The business unit in charge of coordinating computer and network systems. Note: MIS is generally considered an outmoded term.

A condition the data output is not agree with the data encoded.

The default mode setting for domains on Windows 2000 domain controllers. Mixed mode allows Windows 2000 domain controllers and Windows NT backup domain controllers to co-exist in a domain. Mixed mode does not support the universal and nested group enhancements of Windows 2000. You can change the domain mode setting to Windows 2000 native mode after all Windows NT domain controllers are either removed from the domain or upgraded to Windows 2000.

Magneto-Optical. a rewritable optical storage technology, utilizing a combination of optical and magnetic technologies. Data writing occurs when the laser heats the bit on the platter to be written to the Curie point (the temperature which the molecules can be realigned when subject to a magnetic field). The magnet then changes the polarity. Writing is slower because of the two pass operation. Refer to LIMDOW.

A Windows 2000 feature that can be used to remove display modes that the monitor cannot support.

Modulate demodulate. A device that converts digital signals to analog signals within a range that can be carried over a phone circuit, and back to digital signals at the receiving end.

To place a removable tape or disc into a drive.

A feature in Microsoft Windows that allows use of the numeric keyboard to move the mouse pointer.

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