Computer Science Sample Exam (Epreuve Zero) - BEPC Session 2021

This sample Computer Science exam (Epreuve Zero), designed for the BEPC 2021 session, is an official reference paper serving as a model for upcoming exams. It covers the three parts of the Form Four Computer Science curriculum with a high level of expectations. The document includes the detailed answer key, making it a top-tier preparation tool.

Part 1: Microcomputer Architecture and Information Representation (8 marks)

• Exercise 1 - Microcomputer Architecture: This exercise stands out for its depth: it focuses on CISC (Complex Instruction Set Computer) and RISC (Reduced Instruction Set Computer) processor architectures. The student must describe the processor and its role, present both architectures, cite examples (IBM 370/168 for CISC, ARM processors for RISC), and analyze the advantages and disadvantages of each. This topic goes beyond standard questions and encourages deeper reflection.
• Exercise 2 - Information Representation: Using two scenarios (a road sign and an explanatory text), the student must distinguish between data and information, present the characteristics of information (reliability, truthfulness, precision, clarity), explain the concept of structured data and its importance, and cite data organization tools (tables, diagrams). This exercise develops critical thinking about information.

Part 2: Digital Citizenship (5 marks)

• The text covers the anti-mask movement during the Covid-19 crisis and the use of fake news, particularly a video of a German doctor claiming that children died from wearing masks. The student must define fake news and fact-checking (desintox), distinguish between true and false information, analyze why a doctor's figure is used to manipulate public opinion (scientific credibility), assess the consequences of fake news on the population, and propose preventive measures. This topic links public health and digital citizenship in a highly relevant manner.

Part 3: Introduction to Algorithms and Software Development (7 marks)

• Exercise 1 - Algorithms: The "signe_du_nombre" algorithm determines whether an entered number is positive or negative using a complete alternative structure. The student must identify the name, variables and their type (Real), display and reading instructions, the control structure, and simulate execution with the value 8.
• Exercise 2 - Software Engineering: Questions cover the definitions of software and program, the difference between them (commercialization and licensing), and the description of development lifecycle approaches (waterfall, V-model). This exercise covers the fundamentals of software engineering.

This BEPC 2021 sample exam is a reference document for understanding the format and requirements of the Computer Science exam. Its detailed answer key makes it a complete and self-sufficient revision resource.