Summary

• Description:

  The PDF document comprises Kapsabet High School Computer Studies Paper 1 2025 Mock Exam with Marking Scheme.

  It is a KCSE Computer (Practical) Paper 1 (452/1) Post Mock 4 2025 examination.

  • Duration: 2 ½ Hours
  • Total Marks: 100
  • Number of Questions: 20 (Questions 1–20)
  • Structure: Two sections: Section A (Questions 1–15) and Section B (Questions 16–20)
  • Rubric: Answer ALL questions in Section A; answer Question 16 and any other THREE questions from Section B
  • Marking Scheme: The marking scheme is in a different document.

  It covers the following topics:

  • Computer generations and characteristics of first generation computers
  • Computer laboratory safety and care (fire extinguishers, flash disks, ideal working environment)
  • Keyboarding concepts (delete vs backspace) and basic ICT concepts
  • Input/output devices and applications (sound output devices, OMR application areas)
  • Storage and memory (primary vs secondary storage; volatile vs non-volatile memory)
  • Multimedia capability devices and components
  • Data processing errors (misreading vs transposition errors)
  • System unit components (power supply unit functions)
  • Information systems replacement approaches and critical-system changeover
  • Internet and downloads (factors affecting download time)
  • Database and queries (year-of-birth expression; selecting ages between specified ranges)
  • Operating system roles (memory management, interrupt handling)
  • Utility software (definition and examples)
  • System maintenance concepts
  • Spreadsheets (absolute vs relative referencing; formula translation after copying)
  • Algorithms (pseudocode output tracing and flowcharting)
  • Number systems (two’s complement subtraction; hexadecimal to binary; binary arithmetic)
  • Data organization (record, file, database) and virus control measures
  • CPU functions (control unit and ALU) and software licensing (freeware, proprietary, open source)
  • E-commerce concepts and advantages; applications of computing (reservations, law enforcement)
  • DTP (non-printable guides and their functions) and factors in designing a good file
  • ICT careers (web administrator and computer trainer responsibilities)
  • Fact-finding methods (observation method disadvantages)
  • Data communication and networking (wireless vs wired advantages; analog vs digital signals; coaxial cable types; network protocols; internet protocols; star topology)
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  COMPUTER STUDIES

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