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Wild Packets - Networking terms Category: Agriculture and Industry > Networking terms Date & country: 24/02/2017, USA Words: 1152

TSO
Time Sharing Option.

Tuple
A set of two related data items.

Tweak
A minor adjustment.

Type Field
A byte or group of bytes that indicates the protocol used by the data that is to follow.

UNIX
A 32-bit multi-tasking, multi-user operating system invented by Bell Labs that is used on many type of computer systems.

Upload
The activity of transferring a file from a user's computer system to a remote system.

UPS
Uninterruptable Power Supply. An electrical supply system that conditions electrical power for a computer system and will allow continued operating in the event of a power failure.

User
A person who uses a computer system to accomplish a non-computing goal, as compared to a programmer or network manager.

User Area
The area where users work and where the computer systems are located.

User Interface
The collection of display symbols and other sensory stimuli made by a computer that present information to a human and the collection of physical action that a human can take to present data to a computer.

UTP
Unshielded twisting pair wiring.

UTP Ethernet
1) A synonym for 10BaseT. 2) Any of a number of Ethernet technologies in use before the adoption of the 10BaseT Standard that provided a 10 MBPS network system using CSMA/CD.

UUCP
Unix-to-Unix Copy. A simple yet powerful mechanism to copy files from one Unix computer to another over a network or modem connections.

Variable
1) A situation or aspect that cannot be expressed explicitly because it may have one of several values. 2) In troubleshooting, an aspect of a problem that makes it differ from a normal situation. 3) In a mathematical expression, a symbol that represents a number.

VAX
A family of computers made by the Digital Equipment Corporation.

VINES
A Network Operating System developed by Banyan.

Virtual
A quality used to describe a situation where a computer simulates aspects of an activity or device but the activity or device does not have a physical form.

Virus
A piece of computer code that attaches itself to applications and data files without their consent or knowledge.

VITAL
Virtually Integrated Technical Architecture Lifecycle. A conceptual framework, designed by Apple, for designing, building and maintaining enterprise information systems.

VM
Virtual Machine. An operating system for IBM mainframes within which multiple other operating systems can be processing, each with its own applications.

Voice grade
A classification of communication wiring indicating that the wiring is unsuitable for network data transfer.

Volt
The standard unit of measure for a difference in electric potential

VSAM
Virtual Storage Access Method. the Primary Mechanism for accessing data on IBM mainframes.

VTAM
Virtual Terminal Access Method. the primary communication control software for SNA.

VTP
Virtual terminal Protocol. OSI's remote terminal protocol.

Watt
A standard unit of measure for electrical power.

Wave
The phenomena that occurs when a physical medium is host to a measurable condition that varies in intensity, frequency or velocity with time.

Well Behaved
A condition that exhibits expected properties.

Wireless
A System that provides communication without the use of wires.

Wiring closet
In wiring for telephone or data systems, any location from which the communication wires emanate, usually enclosed.

Workgroup
A group of networked computer users who frequently communicate with each other and share common devices.

XDR
External Data Representation. The presentation layer protocol used by NFS.

ZIP
Zone Information Protocol. the AppleTalk protocol that correlates network addresses with zone names.

Zone
In an AppleTalk internet, a reference to a logical group of devices and services.

A-law
The ITU-T companding standard used in the conversion between analog and digital signals in PCM systems. A-law is used primarily in European telephone networks and is similar to the North American mu-law standard. See also companding and mu-law.

B Channel
Bearer channel. In ISDN, a full-duplex, 64-kbps channel used to send user data. Compare to D channel, E channel, and H channel.

D Channel
1. Data channel. Full-duplex, 16-kbps (BRI) or 64-kbps (PRI) ISDN channel. Compare to B channel, E channel, and H channel. 2. In SNA, a device that connects a processor and main storage with peripherals.

E Channel
Echo channel. 64-Kbps ISDN circuit-switching control channel. The E channel was defined in the 1984 ITU-TISDN specification, but was dropped in the 1988 specification. Compare with B channel, D channel, and H channel.

E.164
ITU-T recommendation for international telecommunication numbering, especially in ISDN, BISDN, and SMDS. An evolution of station telephone numbers.

E3
Wide-area digital transmission scheme, used predominantly in Europe, that carries data at a rate of 34.368 Mbps. E3 lines can be leased for private use from common carrier. Compare with T3. See also DS-3.

G.804
ITU-T framing standard that defines the mapping of ATM cells into the physical medium.

H Channel
High-speed channel. Full-duplex ISDN primary rate channel operating at 384 Kbps. Compare with B channel, D channel, and E channel.

I/O
input/output.

I/O Bound
A computer or network activity whose speed is limited by the time necessary to perform I/O functions.

N-ISDN
Narrowband ISDN. Communication standards developed by the ITU-T for baseband networks. Based on 64-kbps B channels and 16- or 64-kbps D channels.

T-2
Four multiplexed T-1 lines offering a communication channel at 6.3 MBPS. Available

T-3
Twenty-eight multiplexed T-1 circuits with a bandwidth of 44.736 MBPS

T-carrier
TDM transmission method usually referring to a line or cable carrying a DS-1 signal.

X Windows
A way of operating remote systems. The window allows the user to control and application remotely and view the application's output.

X.400
An OSI standard for a group of store and forward message handling services.

X.500
Directory Services for OSI provides consistent data storage, retrieval and management for information about all network objects.

X11
The specifications for X Windows.