Part 2 Networks Advantages of Network It Makes the work more flexible an easy It Makes the work more...
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Transcript of Part 2 Networks Advantages of Network It Makes the work more flexible an easy It Makes the work more...
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Part 2Part 2
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NetworksNetworks
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Advantages of NetworkAdvantages of Network
It Makes the work more flexible an It Makes the work more flexible an easy easy
Via Network , you can share :Via Network , you can share :FilesFilesApplicationsApplicationsDisk Storage SpaceDisk Storage SpacePrintersPrinters
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((Local Area NetworkLocal Area Network)) LANLAN
A type of network that link A type of network that link computers in the same site.computers in the same site.
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((Wide Area NetworkWide Area Network ) ) WANWAN
A type of network that links computers in A type of network that links computers in more than company and link computers in more than company and link computers in different cities or countriesdifferent cities or countries
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Client/ServerClient/Server
This term relates to the This term relates to the type of network which type of network which resources are kept resources are kept centrally on the server centrally on the server and used locally by the and used locally by the client.client.
The server tends to be The server tends to be very powerful PC while very powerful PC while each client workstationeach client workstation
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IntranetIntranet
A small version of the A small version of the Internet Internet
It's an internal network It's an internal network Using some of Internet Using some of Internet services such as Email services such as Email and Web in one and Web in one company or one company or one locationlocation
It can be accessed by It can be accessed by authorized user authorized user
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ExtranetExtranet
A network that using some A network that using some of internet services such as of internet services such as Email and Web to share Email and Web to share data between organizationsdata between organizations
It can be accessed by It can be accessed by authorized usersauthorized users
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InternetInternet
A collection of vast global network A collection of vast global network A network that grew out of the American A network that grew out of the American
Military Military Later adopted by the Later adopted by the educational systemeducational system
.. Now exploited by the commercial world.Now exploited by the commercial world. World Wide Web (WWW) is just a small World Wide Web (WWW) is just a small
part of the Internet as a wholepart of the Internet as a whole It provides services such as :It provides services such as : 1- Email 1- Email 2-E_commerce2-E_commerce
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WWWWWW
World Wide WebWorld Wide Web A vast collection of linked A vast collection of linked
document that are held on a document that are held on a global network of computer global network of computer systemsystem
It can be accessed by using It can be accessed by using web browserweb browser
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EmailEmail
The Letter (E) refers to The Letter (E) refers to ElectronicElectronic
Via Email you be able to Via Email you be able to share files between share files between workers in different workers in different locationslocations
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E- commerceE- commerce
Is term which relates to buying or Is term which relates to buying or selling goods and services via the selling goods and services via the internetinternet
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Advantages of E-commerceAdvantages of E-commerce : :
Service available 24/7 Service available 24/7 E commerce offers access to goods E commerce offers access to goods
around the clock.around the clock.Equal delivery to town and country Equal delivery to town and country Right to return defective goodsRight to return defective goodsConsumer right of suppliers country Consumer right of suppliers country
applyapply
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Disadvantages of E-Disadvantages of E-CommerceCommerce
The consumer Covers the cost of The consumer Covers the cost of returning goods returning goods
It's more difficult to return goods It's more difficult to return goods purchased online than goods bought purchased online than goods bought in as shopin as shop
Fraud Fraud
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Tele workingTele working
you can work at home and connected To you can work at home and connected To your organization via computer network your organization via computer network
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Advantages Tele WorkingAdvantages Tele Working
FlexibilityFlexibilityGreater ability to focus on taskGreater ability to focus on task
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Disadvantages Tele WorkingDisadvantages Tele Working
Harder to socially interact with the Harder to socially interact with the team memberteam member
No self disciplineNo self discipline
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Network SystemNetwork System
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Public Switched Telephone Public Switched Telephone Network ( PSTN )Network ( PSTN )
Is the public Is the public telephone system.telephone system.
Its based on Its based on traditional ‘copper traditional ‘copper wire’ technology wire’ technology and transmit and transmit analogue voice analogue voice data only .data only .
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Public Switched Data Network Public Switched Data Network (PSDN)(PSDN)
Is simply the technical Is simply the technical name for the name for the telephone system in telephone system in use today.use today.
Can transmit Digital Can transmit Digital data.data.
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Integrated Services Digital Network Integrated Services Digital Network ( ISDN ) ( ISDN )
Allows much faster transfer rates Allows much faster transfer rates than using modems .than using modems .
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Asymmetric Digital Subscriber Line Asymmetric Digital Subscriber Line ( ADSL )( ADSL )
A more recent technology A more recent technology which allows more data to be which allows more data to be sent over existing copper sent over existing copper telephone lines.telephone lines.
Requires special ADSL Requires special ADSL modem.modem.
Allows data transfer rates of Allows data transfer rates of ranging from 0.5 to 8 Mbps ranging from 0.5 to 8 Mbps when receiving data when receiving data (downstream rate) and from (downstream rate) and from 16 to 640 Kbps when sending 16 to 640 Kbps when sending data (upstream rate)data (upstream rate)
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Digital Subscriber Line (DSL)Digital Subscriber Line (DSL)
DSL technology that allows faster DSL technology that allows faster data transfer while still using copper data transfer while still using copper wires.wires.
Speed of send equal to speed of Speed of send equal to speed of receive.receive.
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Good working environmentGood working environment
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For user (operator)For user (operator)
Using elbow and wrist supportUsing elbow and wrist support Plenty desk space in which to move the Plenty desk space in which to move the
mousemouse Using mouse matUsing mouse mat Using adjustable chairUsing adjustable chair
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Good working environmentGood working environment
Your chair :Your chair : Should be adjustable. If not u are at risk of neck , Should be adjustable. If not u are at risk of neck ,
back , shoulder pain back , shoulder pain Your screen :Your screen :
You use a filter attached to your screen to You use a filter attached to your screen to reduce glare if not you are at risk of eye strainreduce glare if not you are at risk of eye strain
Setting approximately 12” from your monitor Setting approximately 12” from your monitor filterfilter
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Your mouse : Your mouse : Use a mouse mat to make the mouse Use a mouse mat to make the mouse
easier to use if not you are at risk of easier to use if not you are at risk of wrist injuries .wrist injuries .
Breaks :Breaks : Take frequent breaks when using a Take frequent breaks when using a
computer computer
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For computerFor computer
Printer toner cartridge can be recycledPrinter toner cartridge can be recycled Computer on stand by mode use less Computer on stand by mode use less
electricity than when running normally electricity than when running normally Printed paper can be recycled Printed paper can be recycled
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PrecautionsPrecautions
Don’t touch the internal Don’t touch the internal parts of computerparts of computer
More than one computer More than one computer should not use the same should not use the same power socket power socket
Faulty cabled shouldn’t be Faulty cabled shouldn’t be repaired with insulating repaired with insulating tape. tape.
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Computer in our lifeComputer in our life
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Tasks would a human solution Tasks would a human solution be more appropriate than be more appropriate than
computerizedcomputerized
Motivating staff Motivating staff Providing a customerProviding a customer support help support help Select new staff Select new staff
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Tasks would a computerized Tasks would a computerized solution be more appropriate solution be more appropriate
than humanthan human
Repetitive TasksRepetitive TasksDangerous SituationsDangerous SituationsGenerating invoiceGenerating invoice Carrying out stock Carrying out stock Control Calculating payroll for staffControl Calculating payroll for staff
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We Can use computer inWe Can use computer in
Business Business GovernmenGovernmen
t t Health careHealth careEducation Education
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Computer in businessComputer in business
Online bankingOnline banking
Most banks now provide their service online Most banks now provide their service online
Check your balanceCheck your balance Electronic Funds Transfer (EFT)Electronic Funds Transfer (EFT) Application for new credit card.Application for new credit card.The customer benefits from 24-hours access The customer benefits from 24-hours access
to banking serviceto banking service
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Insurance claim processingInsurance claim processingCan use computer program to Can use computer program to
manage insurance functions for manage insurance functions for instance ,we can use computer to instance ,we can use computer to store data of policy holderstore data of policy holder
Calculating premiumsCalculating premiumsAnalyze statistics to estimated Analyze statistics to estimated
premiumspremiums
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Airline bookingAirline booking
Can use the computer in Can use the computer in booking tickets and also booking tickets and also you can booking the ticket you can booking the ticket on line.on line.
Check ticket availability Check ticket availability Purchasing tickets Purchasing tickets
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Business administrationsBusiness administrations
In the past all transaction done manually , In the past all transaction done manually , but now all aspects of business but now all aspects of business administrations system have been administrations system have been computerizedcomputerized
Track invoiceTrack invoiceProcess orders Process orders
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Computer in educationsComputer in educations
Computer based educationComputer based education Student registration Student registration
systemsystem Organize student time Organize student time
tabletable Distance learningDistance learning
(Computer Based (Computer Based Training) (CBT)Training) (CBT)
Using the web for Using the web for researchresearch
Researching home work Researching home work in the internet in the internet
Using traditional Using traditional methodsmethods
Coaching students Coaching students with learning difficultwith learning difficult
Helping students with Helping students with career advice career advice
Provide student Provide student counseling counseling
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Computer in governmentComputer in government
Every a few years census details are taken Every a few years census details are taken and entered in to large computer databaseand entered in to large computer database
Store census information Store census information
Public record systemPublic record system
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Public information systemPublic information system
Announce policy documents Announce policy documents
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Administration systemAdministration system
Income tax payment Income tax payment Television license payment Television license payment
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Electronic paperElectronic paper
Electronic documents help to save a Electronic documents help to save a paper , while other documents are paper , while other documents are
best be printedbest be printed
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Should be printedShould be printedShould be distributed Should be distributed electronicallyelectronically
Planning applicationsPlanning applicationsHelp for software Help for software applicationsapplications
Academic certificationAcademic certificationDocuments that Documents that regularly update regularly update
Staff announcementStaff announcementDocuments that need Documents that need careful proofreadingcareful proofreading
ContractContractWorking drafts of Working drafts of lengthy reportslengthy reports
GuaranteesGuaranteesE-mail massage E-mail massage