1
A-level
COMPUTER SCIENCE i
7517/1
Paper 1 i
Mark scheme
i
June 2020
i
Version: i1.0 iFinal
Page 1 of 53
,*206A7517/1/MS*
,
, MARK i SCHEME i – i A-LEVEL i COMPUTER i SCIENCE i – i 7517/1 i – i JUNE i 2020
Mark ischemes iare iprepared iby ithe iLead iAssessment iWriter iand iconsidered, itogether iwith ithe irelevant
iquestions, iby ia ipanel iof isubject iteachers. iThis imark ischeme iincludes iany iamendments imade iat ithe
istandardisation ievents iwhich iall iassociates iparticipate iin iand iis ithe ischeme iwhich iwas iused iby ithem iin
ithis iexamination. iThe istandardisation iprocess iensures ithat ithe imark ischeme icovers ithe istudents’
iresponses ito iquestions iand ithat ievery iassociate iunderstands iand iapplies iit iin ithe isame icorrect iway.
As ipreparation ifor istandardisation ieach iassociate ianalyses ia inumber iof istudents’ iscripts. iAlternativeianswers
inot ialready icovered iby ithe imark ischeme iare idiscussed iand ilegislated ifor. iIf, iafter ithe istandardisation
iprocess, iassociates iencounter iunusual ianswers iwhich ihave inot ibeen iraised ithey iareirequired ito irefer ithese ito
ithe iLead iExaminer.
It imust ibe istressed ithat ia imark ischeme iis ia iworking idocument, iin imany icases ifurther ideveloped iand
iexpanded ion ithe ibasis iof istudents’ ireactions ito ia iparticular ipaper. iAssumptions iabout ifuture imark
ischemes ion ithe ibasis iof ione iyear’s idocument ishould ibe iavoided; iwhilst ithe iguiding iprinciples iof
iassessment iremain iconstant, idetails iwill ichange, idepending ion ithe icontent iof ia iparticular iexamination
ipaper.
Further icopies iof ithis imark ischeme iare iavailable ifrom iaqa.org.uk
Copyright iinformation
AQA iretains ithe icopyright ion iall iits ipublications. iHowever, iregistered ischools/colleges ifor iAQA iare ipermitted ito icopy imaterial ifrom ithis ibooklet ifor itheir iown
iinternal iuse, iwith ithe ifollowing iimportant iexception: i AQA icannot igive ipermission ito ischools/colleges ito iphotocopy iany imaterial ithat iis iacknowledged ito ia
ithird iparty ieven ifor iinternal iuse iwithin ithe icentre.
Copyright i© i2020 iAQA iand iits ilicensors. i All irights ireserved.
2
A-level
COMPUTER SCIENCE i
7517/1
Paper 1 i
Mark scheme
i
June 2020
i
Version: i1.0 iFinal
Page 1 of 53
,*206A7517/1/MS*
,
, MARK i SCHEME i – i A-LEVEL i COMPUTER i SCIENCE i – i 7517/1 i – i JUNE i 2020
Mark ischemes iare iprepared iby ithe iLead iAssessment iWriter iand iconsidered, itogether iwith ithe irelevant
iquestions, iby ia ipanel iof isubject iteachers. iThis imark ischeme iincludes iany iamendments imade iat ithe
istandardisation ievents iwhich iall iassociates iparticipate iin iand iis ithe ischeme iwhich iwas iused iby ithem iin
ithis iexamination. iThe istandardisation iprocess iensures ithat ithe imark ischeme icovers ithe istudents’
iresponses ito iquestions iand ithat ievery iassociate iunderstands iand iapplies iit iin ithe isame icorrect iway.
As ipreparation ifor istandardisation ieach iassociate ianalyses ia inumber iof istudents’ iscripts. iAlternativeianswers
inot ialready icovered iby ithe imark ischeme iare idiscussed iand ilegislated ifor. iIf, iafter ithe istandardisation
iprocess, iassociates iencounter iunusual ianswers iwhich ihave inot ibeen iraised ithey iareirequired ito irefer ithese ito
ithe iLead iExaminer.
It imust ibe istressed ithat ia imark ischeme iis ia iworking idocument, iin imany icases ifurther ideveloped iand
iexpanded ion ithe ibasis iof istudents’ ireactions ito ia iparticular ipaper. iAssumptions iabout ifuture imark
ischemes ion ithe ibasis iof ione iyear’s idocument ishould ibe iavoided; iwhilst ithe iguiding iprinciples iof
iassessment iremain iconstant, idetails iwill ichange, idepending ion ithe icontent iof ia iparticular iexamination
ipaper.
Further icopies iof ithis imark ischeme iare iavailable ifrom iaqa.org.uk
Copyright iinformation
AQA iretains ithe icopyright ion iall iits ipublications. iHowever, iregistered ischools/colleges ifor iAQA iare ipermitted ito icopy imaterial ifrom ithis ibooklet ifor itheir iown
iinternal iuse, iwith ithe ifollowing iimportant iexception: i AQA icannot igive ipermission ito ischools/colleges ito iphotocopy iany imaterial ithat iis iacknowledged ito ia
ithird iparty ieven ifor iinternal iuse iwithin ithe icentre.
Copyright i© i2020 iAQA iand iits ilicensors. i All irights ireserved.
2
