Glossary
Glossary-12
watchdog timer card
The watchdog timer card is a hardware device that monitors the 3-DNS
Controller for hardware failure.
wide IP
A wide IP is a collection of one or more domain names that maps to one or
more groups of virtual servers managed either by BIG-IP systems,
EDGE-FX Caches, or by host servers. The 3-DNS Controller load balances
name resolution requests across the virtual servers that are defined in the
wide IP that is associated with the requested domain name.
WKS (well-known services)
Well-known services are protocols on ports 0 through 1023 that are widely
used for certain types of data. Some examples of some well-known services
(and their corresponding ports) are: HTTP (port 80), HTTPS (port 443), and
FTP (port 20).
WKS record
A WKS record is a DNS resource record that describes the services usually
provided by a particular protocol on a specific port.
zone
In DNS terms, a zone is a subset of DNS records for one or more domains.
zone file
In DNS terms, a zone file is a database set of domains with one or many
domain names, designated mail servers, a list of other name servers that can
answer resolution requests, and a set of zone attributes, which are contained
in an SOA record.
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