Glossary
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9
Appendix
J
JBIG
Joint Bi-level Image Experts Group. An experts group file specification that defines a
standard for compressing (reducing the size of) image files without any loss in image
information. Files containing photographic images in Web pages are generally
compressed so they can be transferred across the Internet more quickly. JPEG, the
format currently used, causes some loss in image data after compression, and so
reduces image quality. JBIG compression overcomes this shortcoming.
JPEG
Joint Photographic Experts Group. An experts group file specification that defines a
standard for compressing (reducing the size of) photographic and photorealistic
image files. The image compression method used involves some loss of information,
and so reduces image quality. Files containing photographic images in Web pages
are generally compressed by using the JPEG format so they can be transferred
across the Internet more quickly.
L
LAA
Locally Administered Address. When a device is powered ON, its network address is
presented to the network. The default network address assigned by the manufacturer
at the time of production is known as the UAA (Universally Administered Address),
while an address specified by the network administrator to override the UAA is the
LAA (Locally Administered Address). Each LAA on a Local Area Network must be
unique.
LAN
Local Area Network. A network system formed by linking a server, workstations,
devices, and computers, which are all located in the same building or some other
relatively limited area.
LDAP
Lightweight Directory Access Protocol. A network protocol that enables you to locate
organizations, individuals, and other resources, such as files and printers on a
network, whether on the public Internet or on a corporate intranet.
Log on
Entering a user name and password as a means of user authentication to start a
computer session or access to a service.
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