CAMBRIDGE IGCSE COMPUTER SCIENCE PAPER 1EXAM QUESTIONS AND ANSWERS RATED A + GUARANTEED PASS !!!

CAMBRIDGE IGCSE COMPUTER
SCIENCE PAPER 1EXAM QUESTIONS
AND ANSWERS RATED A +
GUARANTEED PASS !!!
denaryjnumberj-
jCORRECTjANSWERSjajbasej10jnumberjinjwhichjeachjdigitjisjworthj10jtimesjthejdigitjtojitsjright,jandjd


igitsjcanjhavej10jvaluesj:j0jtoj9



right,j16j-jCORRECTjANSWERSjhexadecimaljnumber



ajbasej16jnumberjinjwhichjeachjdigitjisjworthj16jtimesjthejdigitjtojitsj____________,jandjdigitsjcanjh
avej_____jvaluesj:j0jtojf



4j-jCORRECTjANSWERSjThejnumberjofjbitsjneededjtojstorejajhexadecimaljdigit



bitj-jCORRECTjANSWERSjajsinglejtrue/falsejvaluej(shortjforjbinaryjdigit)



debugj-jCORRECTjANSWERSjtojfindjerrorsjinjsoftware



digitalj-
jCORRECTjANSWERSjanyjquantityjthatjhasjajprecise,jdiscretejvaluejthatjcanjbejrepresentedjasjajnum


berj(butjcannotjassumejajcontinuousjrangejofjvalues)



bytej-jCORRECTjANSWERSjajgroupjofj8jbits



nibblej-jCORRECTjANSWERSjajgroupjofj4jbitsj(halfjajbyte,jequivalentjtojonejhexjdigit)

,kilobytej-jCORRECTjANSWERSj1024jbytesj=j2^10jbytes



megabytej-jCORRECTjANSWERSj1024jkilobytesj(2^20jorjroughlyj1jmillionjbytes)



gigabytej-jCORRECTjANSWERSj1024jmegabytes



a,b,c,d,e,fj-jCORRECTjANSWERSjdigitsjinjhexadecimaljthatjarejequivalentjtoj10,11,12,13,14,15



colour,jaddresses,jmachine,jmemoryj-jCORRECTjANSWERSj*usesjofjhexadecimaljnumbers*



___________codesjinjHTMLj

-MediajAccessjControlj(MAC)jandjIPj_____________

-assemblyjlanguagejandj____________jcode

_____________jdumps

-specifyingjmemoryjlocations



memoryjdumpj-jCORRECTjANSWERSjAnjoutputjofjmemoryjcontentsjontojthejprinterjorjscreen.j

Usuallyjrepresentedjinjhexadecimal.



mark-upjlanguagej-
jCORRECTjANSWERSjajlanguagejusedjwhenjprocessingjandjpresentingjtext,je.g.jHTML.j




NOTjajprogrammingjlanguagejbutjcontainsjinformationjonjhowjtextjshouldjbejstructuredjandjprese
ntedj(e.g.jparagraphs,jcolour,jfont,junderliningjetc.)jandjcanjalsojbejusedjtojembedjimages,jhyperlin
ksjetc.



unique,jhardware,j48,jmanufacturer,jserialj-jCORRECTjANSWERSjMACjaddress

,Aj_______________jidentifierjnumberjthatjidentifiesjajdevicejonjajlocaljareajnetworkj(LAN).j

Thejaddressjisjtypicallyj*static*jandjsetjinjthej____________jbyjthejmanufacturer.

Thejnamejisjanjacronymjfromj*mediajaccessjcontrol*



STRUCTURE:



-consistsjofj_____jbitsjdisplayedjasjpairsjofjhexadecimal.

-Thejfirstjpartjisjthej____________________jID,jthejsecondjpartjisjthej____________jnumber



digit,jparity,jrepeatj-jCORRECTjANSWERSj*Methodsjofjdatajverification*j



forjshortjnumbersj(e.g.jcreditjcards,jISBNs):j



-checkj____________



forjtransmissionjofjmorejdata,joverjajnetwork:



-______________jbit/checks

-checksum

-Automaticj_____________jreQuestsj(ARQ)



repeatjreQuest.,jnotification,jreceived,jre-sentj-
jCORRECTjANSWERSjAutomaticj________________j_____________j(ARQ)

, Ajmethodjofjdatajtransmissionjemployingjanjerror-
detectingjcodejsojthatjanyjerrorjdetectedjbyjthejreceiverjinitiatesjajrepetitionjofjtransmissionjofjtheji
ncorrectlyjreceivedjmessage.



Thejsenderjalsojrequestsjaj_______________jthatjthejdatajhasjbeenj________________jcorrectly.j

Ifjnojdeliveryjnotificationjisjreceivedjthejmessagejisj____________jperiodicallyjuntiljeitherjitjhasjbee
njsafelyjdeliveredjorjajtime-outjisjreached.



Instructions,jdigitaljmusicaljinstruments,jsynthesizerj-
jCORRECTjANSWERSj*MIDIj(MusicaljInstrumentjDigitaljInterface)*j




Ajsetjofjstandardsj/jfilejformatjusedjtojrepresentjmusicjinjdigitaljform.jUsedjforjrecordingj/jgeneratin
gjsynthesizersjandjotherjdigitaljinstruments



MIDIjfilesj

•jcontainj_________________jofjhowjtojmakejsoundj

•jNon-audiojrecordingj

•jFilejcreatedjusingj____________j____________j________________j

•jProducedjbyj____________________j

•jUsedjwhenjcomposingjmusicj

•jIndividualjnotes/instrumentsjcanjbejchanged



samplingjrate,jsamplingjresolution,jlossy,jrepeated,jindexingj-
jCORRECTjANSWERSj*SoundjSampling*




Thej_____________j____________jisjthejnumberjofjtimesjperjsecondjthejsoundjwavej(i.e.jpressure
,jorjthejanaloguejsignaljfromjmicrophone)jisjsampled