Here is the complete set of questions from the 2026 HIHS Pre-Mock and Regional Mock papers, consolidated into a clean, structured WordPress post format. This is designed for easy copying and pasting into your blog editor.

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2026 Computer Science Mock Examination: Practice Questions

This post compiles the theoretical and practical questions from the recent 2026 Mock GCE and HIHS Pre-Mock sessions. Use these to test your students’ knowledge across the three main sections of the syllabus.

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Section 1: Fundamentals of Computing

1. Hardware and System Basics

• A. Identify two (02) hardware components found inside the computer system.

• B. State one (01) function of the Central Processing Unit (CPU).

• C. Give two (02) differences between primary and secondary memories.

• D. State the full meaning of BIOS and name two of its primary components.

• E. Explain how poor posture leads to RSI and eye strain in an office environment.

2. Software and Operating Systems

• A. Define the term Operating System and state any two (02) of its functions in resource management.

• B. Distinguish between System Software and Application Software.

• C. Define Utility Software and provide one common example.

• D. Identify two examples of application software used to:

  • Enable a learner to work with data requiring calculation.

  • Design graduation certificates.

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Section 2: Hardware Architecture & Networking

1. Internal Architecture & The Machine Cycle

• A. With the aid of a well-annotated diagram, explain the Machine Cycle (Fetch-Execute Cycle).

• B. Explain the interaction between the ALU, Control Unit, and Registers.

• C. Describe the specific roles of the MAR (Memory Address Register) and MDR (Memory Data Register).

• D. Compare Laser, Inkjet, and Dot Matrix printers in terms of mechanism, environment, and running cost.

2. Data Communication & Networking

• A. What is the main function of a Router?

• B. State two (02) differences between a Hub and a Switch.

• C. Define the term Handshaking in the context of data communication.

• D. Identify two (02) components of a basic data communication system.

• E. Distinguish between Physical Topology and Logical Topology.

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Section 3: Algorithms, Databases & Information Systems

1. Algorithms and Programming

• A. Define an Algorithm and state two (02) qualities of a good algorithm.

• B. Differentiate between Source Code and Object Code.

• C. Task: Draw a flowchart to calculate the product of two numbers using the method of successive addition.

• D. Explain the Divide and Conquer algorithm design strategy.

2. Database Management Systems (DBMS)

• A. Define Entity Integrity and Referential Integrity.

• B. Explain three ways relational databases help to reduce data redundancy.

• C. Give two (02) advantages of storing student records in a database instead of paper files.

• D. What is a Foreign Key and what is its primary use?

3. Data Integrity and Security

• A. Distinguish between Data Validation and Data Verification.

• B. Explain two validation techniques used when entering student records and the consequences of poor validation.

• C. Describe how Encryption helps to protect information sent across a network.

• D. Distinguish between Simulation and Prototyping.

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Section 4: Quantitative Reasoning (Calculations)

1. Binary Conversion: Convert $845.375_{10}$ to binary.

2. Binary Arithmetic: Evaluate $(1111_2 / 11_2)$.

3. Base Conversion: Convert the Hexadecimal number $AC7.9_{16}$ to Octal.

4. Binary Logic: Convert the binary number $101011_2$ to decimal.

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Category: Computer Science / Examination Prep

Tags: #GCE2026 #MockExam #ComputerScience #SecondaryEducation #RevisionQuestions