ASPast paper9618 Paper 11 · May/Jun 20252026196 views
بِسْمِ اللَّهِ الرَّحْمَٰنِ الرَّحِيمِ
Stop revising.
Start running it.
Just landed · updated 20 Oct 2026
What's new on CS with ZAK
AskZ now reads your photos and papers, the real past paper marks itself end to end, and every page has its own help. Here's what changed — on the website and in the ZAPP app.
New20 Oct 2026
Your study route: the whole syllabus, one section at a time
Pick your level and follow every syllabus section in order: read the notes, watch a lecture, pass a 5-question check, then flashcards and real past-paper questions. A chapter test closes each topic, and a 10-minute check first tells you where to begin.
- Continue on the home page takes you to your next section
- A pace that finishes a week before your paper, with dates for your calendar
- Checks are advice: re-read, try a fresh 5, or skip and come back
- O Level / IGCSE, AS, A2 and Full A Level
Open the study route
New17 Oct 2026
ZAK's books: prices, sets and ordering in a few taps
Every book, workbook and ebook now shows its price, and each level has a set of two books and two workbooks that costs less than its parts. Add it to your basket and the order goes straight to the books desk on WhatsApp.
- Sets for O Level (current and new syllabus), AS, A2 and Full A Level
- Black and white, full colour or ebook
- Free delivery on every printed set in Pakistan
- Printed fresh for your order, delivered in 7–10 working days
Choose your set
Also new · 4
New20 Oct 2026How am I doing? Your week next to everyone else'sYour dashboard now shows how your week compares with other students on your level: the days you studied, your quiz accuracy, past-paper questions, study-route sections and topics completed. It is anonymous — only rounded ranges leave your device, never your name — and you can turn it off.Open your dashboard Improved20 Oct 2026One screen, one next step on the home pageComing back? The home page now opens on one red Continue with your level, your next paper and your streak in one quiet line, and today's three tasks folded underneath. New here? Pick your level and press Start learning. The site tour and the live code demo share one window: Watch or Try it.See the home page Improved19 Oct 2026New animation for Algorithm Design and Problem-SolvingNew on the Algorithm Design and Problem-Solving page: Step-by-step highlighting of variables changing values during a trace table dry run. (The program development life cycle). Made by AskZ's Examiner Agent and published only after the site's own diagram checks passed.See it on the topic page New19 Oct 20261,035 questions from the old 9608 papersAS and A Level past papers now include the previous 9608 syllabus, 2015 to 2021. Almost every question has its mark scheme, and each one sits under the topic it tests today. Tick “include old 9608 papers” to add them to your practice.Practise 9608 questions
Three ways in
Learn it. Practise it. Ask about it.
Everything on the site sits behind one of these. Start with whichever you need today.
Learn
Read, watch, understand
30 topics in syllabus order, each with Smart Notes, ZAK's lectures, infographics and key terms.
- 30
- topics
- 572
- lectures
Practise
Real questions, marked for you
Every Cambridge question since 2015 by topic, with the mark scheme and the examiner's comment — plus quick rounds.
- 3,450
- exam questions
- 1,613
- quiz questions
Ask
Stuck? Ask, any time
AskZ knows the syllabus and this whole site. It explains, marks your answer and reads a photo of your question.
- 24/7
- day and night
- Free
- always
3,450
real exam questions, by topic
1,613
auto-marked quiz questions
30
topics, each with Smart Notes + assignments
66
exam-ready infographics
435
runnable examples in 7 languages
522
hours of video lectures, by topic
2015→
every past paper since
Zafar Ali Khan
O & A Level Computer Science Educator · Entrepreneur · Programmer at Heart · President & Co-founder, ByteCorp · Creator of AskZ
The person behind the site
“I am not a teacher.
I am an awakener.”
A proud Pakistani educator, entrepreneur and programmer at heart: twenty-five years of O and A Level Computer Science (0478, 2210, 9618) across Karachi's most renowned institutes, thousands of students, A*s and CAIE distinctions every session, and an online following of 65,000+ wherever CAIE CS is offered. ZAK built this free platform because the resources students actually needed did not exist — so he wrote the interpreter, sorted the papers, shot the lectures and trained the tutor himself.
- The City School
- Beaconhouse
- Alpha College
- Cedar College
- Whales College
- Sceptre College
- Nixor College
- Foundation Public School
- Credo
- Heuser College
- Reads College
- DHA Public School
Testimonials
What students say.
Real students, real schools, real results — every testimonial is submitted with credentials and approved by ZAK before it appears.
O Level / IGCSE Featured
I had the privilege of being taught Computer Science by Sir Zafar Ali Khan during my O and A Levels, and I will always be deeply grateful that I was his student. He is an exceptional teacher, but what I value most is the genuine care, generosity and selflessness he has always shown me. He gave me his time, knowledge and support so freely, often going far beyond what anyone could expect from a teacher. Much of the confidence and passion for learning that I carried forward in life began in his classroom, and I truly believe his influence played a part in the person I became. Even years later, he has never hesitated to guide or help me whenever I have reached out. Some teachers leave you with good grades Sir Zafar left me with something far more lasting. I can never fully thank him for everything he has done for me, and I feel incredibly fortunate to still call him my mentor.
A Level Featured
ZAK didn’t just teach Computer Science; he had an incredible way of inspiring and uplifting his students. From supporting us in the classroom to being there for us and responding even after class hours, ZAK always went above and beyond. The love for CS that I developed started with his classes, and I’m genuinely grateful for that foundation. With technology evolving so rapidly, I can only imagine how much more enriching the experience of learning from him must be today
A Level Featured
I was fortunate to study A-level Computer Science with this teacher in Pakistan. He made the classroom welcoming, explained difficult concepts clearly, and always made learning enjoyable. His teaching has stayed with me well beyond A-levels. The foundation he gave me in computer science, especially low-level languages, has been incredibly helpful as I study at Simon Fraser University in Canada. Many of the concepts we covered and assignments we completed prepared me for my first- and second-year university courses. He is a friendly, dedicated, and truly excellent teacher. I’m grateful for the confidence and strong foundation he helped me build.
Cambridge · Edexcel · AQA · OCR · WJEC Eduqas · CCEA · IB
Every board.
Every subject.
Ask Z.
Revision that knows your syllabus. AskZ began here with Computer Science; at askzbot.com the same tutor covers every subject on seven boards, with the real paper structure and marking that follows the mark scheme.
45 days free. No card.Then Free forever, or pay per subject for the ones you sit.
Sitting Cambridge Computer Science? It is complimentary, in full, right here — start on cswithzak.com.
Free forever
- Yearly full past papers, free forever
- Every syllabus point, mapped to papers
- Topic one of every subject: notes, questions, flashcards
- The tutor answers every day on the Free plan
01
Pick your syllabus
Choose your board and the exact code you are entered for. Series, syllabus years and the official PDF come with it.
02
Practise with real paper structure
Papers, command words, mark tags like [3] and timings match the exam, so nothing on the day looks new.
03
AskZ marks and explains
Type or photograph an answer. AskZ marks it against the mark scheme and shows the marks you lost and why.
For Students
Pick the subjects you sit this session. They're yours until the last paper.
Find your subject →
For Parents
One Family plan pools subjects across up to four students — every board, one bill.
Family plan →
For Tutors
Your students' syllabus, papers and marking in one place, so lessons start from the mark scheme.
Plans →
For Schools
Campus seats give every student every subject, with the real paper structure for every board you offer.
Campus →
askzbot.com is the AskZ platform for every board and every subject. Computer Science stays free here on cswithzak.com.
Every May
ZAKATHON
Marathon revision workshops right before the CAIE papers. Started as an experiment with a few students in a room, now fills an auditorium every year.
About the endeavourLearn with ZAK in person
Small-group classes for O Level, AS and A2 across 5 centres in Karachi, plus live online sessions for students anywhere.
Centres & registration Cloud drives
Success Packs
Everything ZAK gives his own students, in one drive. ZAK's notes, tests and mocks plus every CAIE paper, mark scheme and examiner report — one drive per level, updated every session.
What's insideWatch ZAK teach it
Every lecture, indexed by syllabus topic.
572 videos — 522 hours — from ZAK's YouTube channel, each tagged with the topic it teaches. New uploads land here on their own. These are the latest; press play.
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From the blog
Exam technique, study skills, real talk.
72 posts from ZAK, pulled live from the blog.
- Why every cover of my new books is a heat map of the examBismillah. For years students have asked me one question more than any other: "Sir, which book should I follow?" Today I can finally give a complete answer. · 2 min · Blogger
- The 7 Pseudocode Mistakes That Cost You Marks in Paper 2Forgetting ENDIF, using ELSE IF, off-by-one FOR loops — the examiner has seen every one of these. Here's the checklist to run before you put your pen down. · 6 min
- How to Read a Mark Scheme Like an ExaminerThe mark scheme is the closest thing to the examiner's brain. Learn what 'any two from' really means, why command words matter, and how to stop dropping easy marks. · 5 min
Your A* starts with one topic.
Pick a level, open a topic, read the notes, run a bit of pseudocode — or Python, SQL, assembly, Prolog — and try the assignment. That's it. Come back tomorrow and the streak counter does the rest.
