DEC 4000 AXP Service Manual page 231

TCP/IP
Transmission Control Protocol/Internet Protocol. A set of software
communications protocols widely used in UNIX operating environments.
TCP delivers data over a connection between applications on different computers
on a network; IP controls how packets (units of data) are transferred between
computers on a network.
thickwire
An IEEE standard 802.3-compliant Ethernet network made of standard Ethernet
cable, as opposed to ThinWire Ethernet cable. Also called standard Ethernet.
Contrast with ThinWire.
ThinWire
Digital's proprietary Ethernet products used for local distribution of data
communications. Contrast with thickwire.
UETP
User Environment Test Package. An OpenVMS AXP software package designed
to test whether the OpenVMS operating system is installed correctly. UETP puts
the system through a series of tests that simulate a typical user environment, by
making demands on the system that are similar to demands that might occur in
everyday use.
uninterruptible power supply (UPS)
A battery-backup option that maintains AC power if a power failure occurs.
unmasked write
In memory, a write cycle that updates all locations of a nominal data block. That
is, a hexword update to a cache block.
UPS
See uninterruptible power supply.
VMScluster system
A highly integrated organization of Digital's VMS systems that communicate
over a high-speed communications path. VMScluster configurations have all the
functions of single-node systems, plus the ability to share CPU resources, queues,
and disk storage.
Glossary–21