Browsing: W
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WAN |
Wide-area network.
Data communications network that serves users across a
broad geographic area and often uses transmission devices
provided by common carriers. Frame Relay, SMDS, and X.25
are examples of WANs. Compare with
LAN
and
MAN.
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watchdog |
Watchdog timer manager that
runs on the NP of each LightStream 2020 ATM switch in an
ATM network. The watchdog process rearms the watchdog
timer so that the system automatically restarts if the NP
fails. See also
watchdog
timer.
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watchdog
packet |
Used to ensure that a client
is still connected to a NetWare server. If the server has
not received a packet from a client for a certain period
of time, it sends that client a series of watchdog
packets. If the station fails to respond to a predefined
number of watchdog packets, the server concludes that the
station is no longer connected and clears the connection
for that station.
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watchdog spoofing
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Subset of spoofing that
refers specifically to a router acting for a NetWare
client by sending watchdog packets to a NetWare server to
keep the session between client and server active. See
also
spoofing.
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watchdog
timer |
1.) Hardware or software
mechanism that is used to trigger an event or an escape
from a process unless the timer is periodically reset. See
also
watchdog.
2.) In NetWare, a timer that indicates the maximum period
of time that a server will wait for a client to respond to
a watchdog packet. If the timer expires, the server sends
another watchdog packet (up to a set maximum). See also
watchdog
packet.
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waveform coding |
Electrical techniques used
to convey binary signals.
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Weighted
fair queuing
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A queuing method that prioritizes interactive traffic over file transfers in order to ensure satisfactory response time for common user applications.
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wide-area network |
See
WAN.
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| wideband |
See
broadband.
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| wildcard mask |
32-bit quantity used in
conjunction with an IP address to determine which bits in
an IP address should be ignored when comparing that
address with another IP address. A wildcard mask is
specified when setting up access lists.
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| window |
Number of octets that the
receiver is willing to accept.
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| window size |
Refers to the number of
messages that can be transmitted while awaiting an
acknowledgment.
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| wire map |
Feature provided by most
cable testers. Used to test twisted pair cable
installations, it shows which wire pairs connect to what
pins on the plugs and sockets.
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| wiring closet |
Specially designed room used
for wiring a data or voice network. Wiring closets serve
as a central junction point for the wiring and wiring
equipment that is used for interconnecting devices.
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| WISCNET |
TCP/IP network in Wisconsin
(United States) connecting University of Wisconsin
campuses and a number of private colleges. Links are 56
Kbps and T1.
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| workgroup |
Collection of workstations
and servers on a LAN that are designed to communicate and
exchange data with one another.
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| WorkGroup Director |
Cisco SNMP-based
network-management software tool. Workgroup Director runs
on UNIX workstations either as a standalone application or
integrated with another SNMP-based network management
platform, providing a seamless, powerful management system
for Cisco workgroup products. See also
SNMP.
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| workgroup switching |
Method of switching that
provides high-speed (100-Mbps) transparent bridging
between Ethernet networks and high-speed translational
bridging between Ethernet and CDDI or FDDI.
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World Wide Web |
See
WWW.
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| wrap |
Action taken by an FDDI or
CDDI network to recover in the event of a failure. The
stations on each side of the failure reconfigure
themselves, creating a single logical ring out of the
primary and secondary rings.
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| WWW |
World Wide Web.
Large network of Internet servers providing hypertext and
other services to terminals running client applications
such as a WWW browser. See also
WWW
browser.
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| WWW
browser |
GUI-based hypertext client
application, such as Mosaic, used to access hypertext
documents and other services located on innumerable remote
servers throughout the WWW and Internet. See also
hypertext,
Internet,
Mosaic,
and
WWW.
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