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XENPAK — Standard that defines a type of pluggable fiber-optic transceiver
module that is compatible with the 10-Gigabit Ethernet (10 GbE) standard.
XENPAK module — 10-Gigabit Ethernet fiber-optic transceiver. XENPAK modules
are hot-insertable and hot-removable. See also MSA.
XENPAK Multisource Agreement — See MSA.
XENPAK-SR 10BASE-SR XENPAK — Media type that supports a link length of 26 meters on standard
Fiber Distributed Data Interface (FDDI) grade multimode fiber (MMF).
Up to 300-meter link lengths are possible with 2000 MHz/km MMF (OM3).
XENPAK-ZR 10GBASE-ZR XENPAK — Media type used for long-reach, single-mode (80-120 km) 10-Gigabit
Ethernet metro applications.
XFP — 10-Gigabit small form-factor pluggable transceiver. A transceiver
that provides support for fiber-optic cables. XFPs are hot-insertable
and hot-removable. See also SFP.
XML — Extensible Markup Language. Language used for defining a set
of markers, called tags, that define the function and hierarchical
relationships of the parts of a document or data set.
XML Path Language — See XPath.
XML schema — Definition of the elements and structure of one or more Extensible
Markup Language (XML) documents. Similar to a document type definition
(DTD), but with additional information and written in XML.
XOR — Exclusive or. A logical operator (exclusive disjunction) in
which the operation yields the result of true when one, and only one,
of its operands is true.
XPath — Standard used in XSLT to specify and locate elements in the
input document’s XML hierarchy. XPath is fully described in
the W3C specification at http://w3c.org/TR/xpath.
XSLT — Extensible Stylesheet Language for Transformations. A standard
for processing XML data developed by the World Wide Web Consortium
(W3C). XSLT performs XML-to-XML transformations, turning an input
XML hierarchy into an output XML hierarchy. The XSLT specification
is on the W3C Web site at http://www.w3c.org/TR/xslt
.
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