FBLA Introduction To Information Technology

LAN

Local Area Network

WAN

Wide Area Network

HTTP

Hyper Text Transfer Protocol

HTML

Hyper Text Markup Language

RAM

Random Access Memory

ACL

Access Control List

ADC

Analog to Digital Converter

ADF

Automatic Document Feeder

APU

Accelerated Processing Unit

BSOD

Blue Screen of Death

CD

Compact Disc

CD-R

Compact Disc Recordable

CD-ROM

Compact Disc Read Only Memory

ATM

Asynchronous Transfer Mode

CD-RW

Compact Disc Re-Writable

CPU

Central Processing Unit

DCIM

Digital Camera Images

DMA

Direct Memory Access

DOS

Disc Operating Systems

DRAM

Dynamic Random Access Memory

DSL

Digital Subscriber Line

DV

Digital Video

DVD

Digital Versatile Disc

DVD +/- R

Digital Versatile Disc Recordable

DVD+RW

Digital Versatile Disc Re-Writable

DVD-RAM

Digital Versatile Disc Random Access Memory

DVI

Digital Video Interface

DVR

Digital Video Recorder

ECC

Error Correction Code

FTP

File Transfer Protocol

HTTPS

Hyper Text Transfer Protocol

It

Information Technology

Kbps

Kilobits Per Second

NIC

Network Interface Card

OSD

On Screen Display

PMU

Power Management Unit

POP3

Post Office Protocol

RTF

Rich Text Format

SAN

Storage Area Network

SMART

Self Monitoring Analysis and Reporting Technology

SMS

Short Message Service

USB

Universal Serial Bus

VoIP

Voice Over Internet Protocol

VPN

Virtual Private Network

VRAM

Video Random Access Memory

W3C

World Wide Web Consortium

WAIS

Wide Area Information Server

WI-FI

Wireless Fidelity

WWW

World Wide Web

XHTML

Extensible Hypertext Markup Language

The shape of a local-area network (LAN) or other communications system.

Topology

The third layer of OSI

Network Layer

Every node has a circuit connecting it to every other node in a network. Is very expensive to implement but yields the greatest amount of redundancy.

Full Mesh Topology

The sixth layer of OSI

Presentation Layer

It refers to layout of a network. How different nodes in a network are connected to each other and how they communicate is determined by the network's topology.

Network Topology

This is a "hybrid" topology that combines characteristics of linear bus and star topologies. In a tree network, groups of star-configured networks are connected to a linear bus backbone cable.

Tree Topology

The physical layout of devices on a network. Every LAN has a topology, or the way that the devices on a network are arranged and how they communicate with each other.

Physical Topology

A networking framework to implement protocols in seven layers

Open System Interconnection (OSI)

The first layer of OSI model.

Physical Layer

The seventh layer of OSI model.

Application Layer

Fifth layer of OSI

Session Layer

Forth layer of OSI

Transport Layer

Second layer of OSI

Data Link Layer

Some nodes are organized in a full mesh scheme but others are only connected to one or two in the network.

Partial Mesh Topology

A group of two or more computer systems linked together. There are many types of computer networks, including the following:

Network

A topology where devices are connected to a central computer, called a hub.

Star Topology

A topology where a central cable -- the main wire -- that connects all devices on a local-area network (LAN).

Bus Topology

A local-area network (LAN) whose topology is a ring.

Ring Topology