Cambridge AssessmentInternational EducationSyllabusCambridge InternationalAS &A LevelComputer Science 9618Use this syllabus for exams in 2024 and 2025.Exams are available in the June and November series.58Version 2For the purposes of screen readers,any mention in this document of Cambridge IGCSECambridgerefers to Cambridge International General Certification of Secondary Education.PathwayWhy choose Cambridge International?Cambridge Intemational prepares school students for life,helping them develop an informed curiosity and alasting passion for learning.We are part of the University of Cambridge.Our Cambridge Pathway gives students a clear path for educational success from age 5 to 19.Schools canshape the curriculum around how they want students to learn-with a wide range of subjects and flexible waysto offer them.It helps students discover new abilities and a wider world,and gives them the skills they need forlife,so they can achieve at school,university and work.Our programmes and qualifications set the global standard for intemnational education.They are created bysubject experts,rooted in academic rigour and reflect the latest educational research.They provide a strongplatform for students to progress from one stage to the next,and are well supported by teaching and leamningresources.We review all our syllabuses regularly,so they reflect the latest research evidence and professional teachingpractice-and take account of the different national contexts in which they are taught.We consult with teachers to help us design each syllabus around the needs of their learners.Consulting withleading universities has helped us make sure our syllabuses encourage students to master the key concepts inthe subject and develop the skills necessary for success in higher education.Our mission is to provide educational benefit through provision of international programmes and qualificationsfor school education and to be the world leader in this field.Together with schools,we develop Cambridgeleamers who are confident,responsible,reflective,innovative and engaged-equipped for success in theEvery year,nearly a million Cambridge students from 10000 schools in 160 countries prepare for their futurewith the Cambridge Pathway.School feedback:'We think the Cambridge curriculum is superb preparation for university.'Feedback from:Christoph Guttentag.Dean of Undergraduate Admissions,Duke University.USAQuality managementCambridge International is committed to providing exceptional quality.In line with this commitment,ourquality management system for the provision of intemnational qualifications and education programmes forstudents aged 5 to 19 is independently certified as meeting the intemationally recognised standard,ISO 9001:2015.Learn more at www.cambridgeinternational.org/ISO9001Cambridge University Press Assessment September 2021Cambridge Assessment Intemational Education is part of Cambridge University Press Assessment.Cambridge University PressAssessment is a department of the University of Cambridge.Cambridge University Press Assessment retains the copyright on all its publications.Registered centres are pemmitted to copymaterial from this booklet for their own internal use.However,we cannot give pemmission to centres to photocopy any material that isacknowledged to a third party even for internal use within a centre.ContentsWhy choose Cambridge International?21 Why choose this syllabus?....................42 Syllabus overview.…Aims8Content overview9Assessment overview11Assessment objectives138 Subject content....14AS content14A Level content32Teacher guidance394 Details of the assessment ....................40Submission of Paper 4 Practical40Command words415 What else you need to know42Before you start42Making entries43Accessibility and equality44After the exam45How students,teachers and higher education can use the grades46Grade descriptions46Changes to this syllabus for 2024 and 202547Important:Changes to this syllabusFor information about changes to this syllabus for 2024 and 2025,go to page 47.The latest syllabus is version 2,published March 2023.Any textbooks endorsed to support the syllabus for examination from 2021 are still suitable for use with thissyllabus.