Official Computer Science Exam - BEPC Session 2020

This official Computer Science exam from the BEPC 2020 session is a national Cameroonian examination paper designed for Form Four students. The document includes the complete exam paper along with its detailed answer key, making it a comprehensive educational tool for exam preparation.

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

• Exercise 1 - Microcomputer Architecture: The context involves renovating a computer room. The student must explain the role of the UPS (protection against power outages), identify input peripherals (mouse, keyboard), suggest methods for cleaning computer equipment, and propose dust protection measures. This exercise combines theoretical knowledge with practical awareness.
• Exercise 2 - Information Representation: Questions cover identifying valid numeration bases for a given number, ASCII encoding (converting the number 128), and performance measurement units for components (hertz for the processor, byte for the hard drive). The student must master representation and measurement concepts in computing.

Part 2: Digital Citizenship (5 marks)

• The supporting text discusses French influencer PA7, imprisoned for organized fraud via social media. The student must define the terms social network, influencer, and followers, cite social media applications, identify offenses committed, mention the Budapest Convention on Cybercrime, and list applicable penalties. This exercise concretely illustrates the dangers and legal consequences of fraudulent Internet use.

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

• Exercise 1 - Algorithms: The "Quotient" algorithm presents a complete alternative structure for checking division by zero. The student must define the word algorithm, identify input instructions, and name the control structure used. This type of exercise develops programming logic.
• Exercise 2 - Software Development: Through the case of a school wishing to automate enrollment management, questions cover software development, the software lifecycle, project phases, and stakeholder roles (project owner, delegated project owner, project manager).

This official BEPC 2020 exam paper is an essential revision resource. The included answer key helps students understand examiner expectations and consolidate their knowledge across all sections of the Computer Science curriculum.