Gce Ordinary Level/Sc (7010) Contents

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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS
GCE Ordinary Level

MARK SCHEME for the October/November 2007 question paper

7010 COMPUTER STUDIES
7010/01 Paper 1, maximum raw mark 100

This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. It shows the basis on which Examiners were instructed to award marks. It does not indicate the details of the discussions that took place at an Examiners’ meeting before marking began. All Examiners are instructed that alternative correct answers and unexpected approaches in candidates’ scripts must be given marks that fairly reflect the relevant knowledge and skills demonstrated. Mark schemes must be read in conjunction with the question papers and the report on the examination.



CIE will not enter into discussions or correspondence in connection with these mark schemes.

CIE is publishing the mark schemes for the October/November 2007 question papers for most IGCSE, GCE Advanced Level and Advanced Subsidiary Level syllabuses and some Ordinary Level syllabuses.

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Mark Scheme GCE O LEVEL – October/November 2007

Syllabus 7010

Paper 01

any two points from: fixed number of bits/8 bits represents a character unit of memory/storage e.g. 11010001 (b) CD-ROM any two points from: (secondary/portable) storage medium can be read only (memory) cannot change data e.g. used to store programs/data/pictures/films, etc. (c) interrupt any two points from: a signal/request generated by a device/program causes a break in execution of a program/stops the program e.g. printer out of paper, pressing break key (d) buffer any two points from: temporary store/memory allows speed of CPU/devices to be matched to hold data being transferred between peripherals and CPU e.g. pages stored waiting to be printed (e) virtual reality any two points from: 3D world computer simulation needs special input devices to interact – (data) goggles/gloves e.g. design of chemical plants 2 Any two differences from: high level portable problem-orientated close to English one-to-many relationship easier to debug/change/upgrade needs compiler/interpreter low level machine-orientated can be difficult to read/understand one-to-one relationship needs assembler

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Mark Scheme GCE O LEVEL – October/November 2007

Syllabus 7010

Paper 01

(a) Any three points from: knowledge base rule base inference engine (suitable) input/output interface/shell (b) Any one example from, e.g. mineral/oil prospecting tax/financial calculations chess diagnostics speech recognition

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(a) Any one advantage from, e.g. can bank from home (disabled) customers do not need to go to bank no need to queue at bank can make payments/check accounts from home banking 24/7 can bank with any bank in the world better interest rates available (b) Any one advantage from, e.g. no need to have offices (in every town) increased banking profits (less overheads) larger customer base (worldwide) fewer staff required (c) (i) Any one positive effect from, e.g. less pollution less traffic (ii) Any one negative effect from, e.g. less (social) interaction job losses/closing down of branches inner cities become “ghost towns” increase in online fraud/hacking (d) Any two from: fraud viruses bogus sites loss of personal contact with the bank

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Mark Scheme GCE O LEVEL – October/November 2007

Syllabus 7010

Paper 01

(a) (i) Any one from: passwords/biometrics user id/access rights firewall removable storage media physical protection (ii) encryption (b) Any three from: data must be kept up-to-date data must be accurate data must be obtained/used legally/lawfully data must be adequate, relevant and not excessive data must only be used for the stated purpose data must not be kept longer than necessary data must be kept secure...
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