TopicsCommunication TechnologyInternetData SecurityInformation MisuseInformation SystemsTechnological TrendsImpact of IT

Communication TechnologyData Communication – Transmission of data between two or more computers

Linked Point to Point - Broadcast

Communication TechnologyConfigurations

LANWANMAN

Stand Alone – Not attached to Network

Hub – Central connecting device

Communication TechnologyLayout

StarBusRing

Channel – Medium to transfer data

Communication TechnologyData Flow

SimplexHalf DuplexFull Duplex

Communication TechnologyMedia

CoaxialUTPFibre OpticMicrowaveWireless/Bluetooth/IR/Hotspot

Communication TechnologyChannel Speed -Amount of info channel can handle at one time

InternetInternet – Biggest network, changed from military purposes to commerce, government, educational and entertainment

InternetServices

EmailIRCWWWFTPNewsgroups

InternetConnection

ISPDialupISDNASDLCable

InternetCommunication Terminology

TCP/IPHostIPHTMLURLWebsite

InternetBrowserWebpageHome pageHyper linkSearch EngineElectronic commerce

InternetIntranet – Private network based on internet standardsDistribute documentsShare informationEnable Teleconferencing

Extranet – formed by allowing others the authorized use to an intranet

Data SecurityProtection of computer hardware/software from deliberate or accidental damage

Data SecurityExternal Sources – Protect From:TheftPower outagesNatural DisasterFireDust/Humidity

Data SecurityExternal Sources – How?

CamerasAlarmsBiometricsAccess codesFireproof CabinetsUPS

Data SecurityInternal Sources – Protect From:Clerical ErrorsFiles erased/corruptedVirusesHackers,Unauthorized accessRevenge

Data SecurityInternal Sources – How?

BackupPasswordsNetwork LoggingEncryptionAntivirusFirewalls

Information MisuseInformation:

Used only for intended purposeOwner has right to examine any dataMust be accurateSecurity should be in placeInfo not kept longer than necessary

PropagandaComputer FraudComputer Crime Unauthorized Access Electronic Eavesdropping Industrial espionage Surveillance Copyright and Piracy

Information MisusePropagandaComputer FraudComputer Crime Unauthorized Access Electronic Eavesdropping Industrial espionage Surveillance Copyright and Piracy

Information SystemsComputerized system responsible for collection, processing and distribution of information.

Information SystemsTypes of computer systems:User

Single userMulti user

TaskSingle taskingMulti tasking

Information SystemsTypes of computer systems:Personal ComputerPortable ComputerNetwork ComputersMainframeSuper Computer

Information SystemsAreas:CommerceBankingManufacturingScience and TechnologyEducationLaw Enforcement

Technological TrendsAIDesign

CADDCAMCAE

BusinessTeleconferencingTelemarketing

Technological TrendsDesktop Publishing

Impact of ITChanges in WorkplaceLoss of Jobs/RetrainingHealth Concerns

RSIBackEye

Stress

Impact of ITEnvironment

PowerDisposing of technology

Legal Effects