These interactive flashcards help IB Computer Science (First Exam 2027) students Standard Level (SL) and Higher Level (HL) quickly review and memorize the essential definitions, formulas, and terms needed for success in IB Exams. Each card focuses on A2.4.1 Effectiveness of Firewalls at Protecting a Network and is aligned with the IB Computer Science (First Exam 2027) syllabus, ensuring focused revision on programming concepts, algorithms, and data structures. Students can test themselves anytime, anywhere, perfect for reinforcing tricky concepts, learning IB terminology, and committing formulas to memory. By using RevisionDojo's flashcards consistently, learners turn repetition into mastery and enter the exam with confidence.