01-04-2020-Oxford_English_for_Infomation_Technology (1171844), страница 30
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Give reasons for your decisions.12345678LISTENINGa national newspapera textbook on information technologya laser printer manualShakespeare's playsa detective storya traveller's guide to Indiaschoolbooksan encyclopaediaWhat opinions do you think these people will have aboute-publishing?12345a telecommunications engineeran authoran electronic publisherthe developer of an ebook readera keen readerNow listen to the recording. Note the points made byeach of the speakers for or against e-publishing.
Compare your listwith your predictions from Task 2.Speakertelecommunications engineerauthorelectronic publisherdeveloper of an ebook readerkeen readerPoints forPoints againstPairwork: Student AUNIT 2• Workgroup server• Dual Pentium IV 1.4GHzprocessor• 133MHz system bus• 256MB ECC SDRAM(upgradable to 2GB)• Hot plug 60GB 7200rpm LVDSCSI hard drive upgradable to180GB of internal storage• Dell 19" (17.9" VIS) SVGAcolour monitor• 24/52X EIDE CD-ROM driveand 3.5" 1.44MB floppy disk driveUNIT 3ATM host'scomputerRoutes thetransaction request tothe cardholder's bankOptions• APC 1400 SmartUPS• High performance RAIDadapter with 128MB cache• Hot-plug redundant powersupplies• 3 Year Next-business-day onsite serviceYour bank accountaccountFunds are electronicallytransferred fromcardholder's accountinto the host's accountBank's computerAccesses information incardholder's accountCard inserted into ATMmachineEncoded magnetic strip oncard and PIN number verifyMerchant's bank accountthe user identity and account.
Merchant'sFunds for all transactionsare transferred to themerchant the following dayATM merchant'scomputerHost's bank accountOnce funds arereceived authorisationis sent to the machineto dispense cashCash isdispensedwithinsecondsFig 3 ATMUNIT 6The graphically-oriented operating systemused on Apple Macintosh microcomputers.The most widely used operating system everon PC-compatible microcomputers; MS-DOS has beentechnologically surpassed in recent years and is nolonger being revised.The operating system designed for high-end PCcompatible microcomputers; was available in bothdesktop version and a version for networkadministration.An operating system designed for pen-basedcomputers.Operating systems used on IBMmainframes.A widely used operating system on localarea networks (LANs).Microsoft Windows operating systembuilt from ideas developed in VMS and used for serversand workstations.
More secure and stable thanWindows 9X systems.UNIT 8r e v i e w sTomb Raider 4: The Last RevelationSega Dreamcast | Core Design/Eidos |Although this is essentially thesame game that recentlyappeared on the PlayStation,some fancy enhancementspush this up to accelerated PClevel. In fact, The LastRevelation is probably thebest-looking version so far.The Dreamcast remainsunstretched but the visualscapture the Egyptian moodperfectly.
The plot sees Larareturning to what she doesbest - raiding tombs in herusual physics-defying manner but this time she stays in Egyptrather than globe-trotting.So, what is The LastRevelation? The chances areonly a few will ever find outUNIT9because this is a very trickygame. You will need to preparefor periods of intensefrustration and annoyance,punctuated by some superbsequences.If only Lara would move inthe direction you point. If onlyshe jumped when you press'jump' rather than run thosefatal final steps. If only thepuzzles were less obscure.So why bother? Well, thecharacterisation and thestoryline are of sufficientquality to encourageperseverance. Also, solving astubborn puzzle or backflipping over a chasm isundeniably good fun.
This isthe best version yet and will dofor now, but a radical overhaulis needed before Lara returnsagain.Greg HowsonExplain to your partner with the help of these notes what DVD disksare, how DVD disks store such large quantities of information andhow that information is read.DVD = Digital Versatile Disk••••can hold complete movielike CD in size and thicknessbut CD drives use red laser light, DVD drives use blueblue laser has shorter wavelength therefore data can be denserDVDs can be double-sided• each side can have two layers• top layer 4.7GB, bottom layer 3.8GB, total capacity = 17GB• data transfer rate twice rate of CD-ROM186PAIRWORK Student AUNIT 11Asynchronous transmissionThis method, used with most microcomputers, is alsocalled start-stop transmission. In asynchronoustransmission, data is sent one byte (or character) at atime.
Each string of bits making up the byte isbracketed, or marked off, with special control bits. Thatis, a 'start' bit represents the beginning of a character,and a 'stop' bit represents its end. As a means ofchecking that the whole character has beentransmitted, an error check bit is generatedimmediately after each character.Transmitting only one byte at a time makes this arelatively slow method. As a result, asynchronoustransmission is not used when great amounts of datamust be sent rapidly. Its advantage is that the data canbe transmitted whenever it is convenient for thesender.UNIT 14main page (index.htm) with toolbar to links to other pagesContact page (contacts.htm)Provide visitors with contact pointsProduct detail (product2.htm)More in-depth informationUNIT 15'Paula's Plants':Website overviewFig 1a Site diagramProblems1234Weather ReportsSeveral weather-related sitescan give you up-to-the-minuteweather reports andprecipitation radar for your cityor local region or for an area inwhich you'll be travelling.
You'11also find extended forecasts.Some weather sites providesafety tips for dealing withsevere weather.www. weather.comYou want to brighten up your website.You would like to reserve seats on the London to Edinburghtrain.You want some help with a project on computer security.You're feeling a bit flabby and would like to take up marathonrunning. How can you prepare for this?Comic StripsEvervone needs a laugh fromtime to time, and few things canput a smile on your face morequickly than a classic comicstrip. You can check out dozensof your favourite comics and, insome cases, even send a comicstrip to a friend.www.unitedmedia.comwww.uexpress.comMapsWebsites can give you detailedstreet maps for major cities, orthey can give you a map ofInterstate highways. Some sitescan help you find a particularaddress or suggest the bestmethod of travel to yourdestination.
You can also printmaps at many websites.www.mapblast.comPAIRWORK Student AUNIT 16187Communication SystemsAudio onlyAsynchronousSynchronousChatAsynchronousVoicemailVideoconferencingemailbulletin boardFig 2a World of connectivityProblem AUNIT 17Monitor power light flashing but display screen is completely blank.SOLUTIONMake and modelDell, GS205XService NumberX3457ProcessorPentium IVMemory256MBO.S.Windows XPConfigurationstandaloneINSTRUCTIONSRESULTCheck to see if the computer system unit power light comes on whenthe computer is switched on.Computer powerseems to be O.K.Check that the monitor data cable is connected correctly to the VGAport at the rear of the computer.Data cable isplugged in O.K.Check that the graphics expansion card is installed properly by:• Switching off the computer.• Disconnecting the power cable.• Opening the computer case by removing the four securing screws.• Inspecting the graphics card to see if it is seated properly in theexpansion slot.Graphics cardis loose.Correct the fault and check the system by:• Pushing the graphics card fully into the expansion slot.• Replacing the casing.• Reconnecting the power supply.• Switching on the computer and checking that the monitor isfunctioning correctly.Monitorfunctioning O.K.UNIT 18Getting the bugEmail contains an attachment called LOVELETTER-FOR-YOU.TXTThis is where the virus isfound.
At this point the virus is still inactive.How the simple yet clevervirus was able to spread soquicklyOpening the attachment launches aVisual Basic script, a program whichLove Bug uses to do three tasks...Facts of LoveLovebug spread twice as fastas the Melissa virus whichaffected 300,000 UScomputers in March 1999.Experts believe the worst isstill to come with 21 newvariants of the original virusdetected so far.Bugged email arrives in intray labelled ILOVEYOUCopies itself by overwriting files endingwith vbs, vbe, js, jse, ess, wsh, set, hta, jpg,jpeg, mp2 and mp3Fig 2 The spread of the love bugSends a copy of itself to allnames in the computer'sMicrosoft Outlook addressbook.Attempts to downloadpassword - stealingTrojan Horse programfrom the web.188PAIRWORK Student AUNIT 19Incremental backupAn incremental backup includes only files with theirarchive bit on.
The archive bit indicates whether a file hasbeen backed up since it was last changed. Whenever youback up a file in Windows, the operating systemautomatically sets the archive bit to 0 (off). 1 (on) indicatesa file has not been backed up since it was last worked on.This way, as you append a series of incrementals to your fullbackup, each contains only those files that are new or havechanged since your last backup. This keeps your backup setup to date using a minimum of time and tape.Thedisadvantage is that it may need many tapes to fully restorethe hard disk.U N I T 21Java Developed by Sun Microsystems in the mid-1990s, Java is widelyused for developing interactive applications for the Internet.Ada Named after Countess Ada Lovelace (one of the firstprogrammers); it is a superset of Pascal.
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