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zoom ring

A zoom adjustment ring found on many digital video recorders and digital cameras. Zoom rings enable motorized zoom that allows you to change the focal length in real-time as you shoot. A 4X zoom lens, for example, will enlarge or reduce the subject in an image by four times depending on which way it’s zoomed. […]

zoom lens

In digital cameras and digital video recording devices, a zoom lens let you to select any focal length within the len’s range. The lens changes the angle of view and its magnifying power based on the zooming range selected. Zooming out gives the photographer a wide-angle view that captures a wide expanse of a scene. […]


In graphical user interfaces, to make a window larger. Typically, there is a zoom box in one corner of the window. When you select the zoom box the first time, the system expands the window to fill the entire screen. (This is sometimes called maximizing.) When you select it again, the window shrinks to its […]

zoned-bit recording

)A method of recording data on a hard disk drive whereby the sectors per track on the drive are not consistent across the platter. In general, tracks closest to the center have fewer sectors than tracks toward the outside of the platter where the tracks are larger and can fit more sectors. Though the platter […]


(zōn´ing) (n.) The process of allocating resources in a SAN to load balance the devices connected to the network. Zoning allows the network administrator to separate the SAN into units and allocate storage to those units based on need. Zoning protects the SAN system from such threats as viruses, data corruption and malicious hackers as […]

zoned CLV

Short for zoned constant linear velocity, a type of CLV data read/write method that separates a CD or DVD compact disk into different fixed-speed zones and changes the speed of rotation for each zone instead of across the entire disk.

zone file

A file on a root server that contains domain name registration information. Zone files contain information necessary to resolve domain names to IP addresses and contains all information related to one domain. Zone files are also called master files.


The word zone is used to mean any area that is separated from another, or is distinguished from another based on distinctive circumstances. In computers, networking and the Internet, the meaning of the word zone changes depending on the specific environment. Some common meanings of the word zone include the following: Domain Name System (DNS): […]


(1) A computer that has been implanted with a daemon that puts it under the control of a malicious hacker without the knowledge of the computer owner. Zombies are used by malicious hackers to launch DoS attacks. The hacker sends commands to the zombie through an open port. On command, the zombie computer sends an […]


The most widespread botnet in history, ZeuS is a Trojan horse that infiltrates computers in order to steal data by logging keystrokes and spread copies of itself to other devices via instant messaging and e-mail messages. Computers infected by a ZeuS variant can be controlled by the attacker and monitored for keystrokes in order to […]

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