This post compiles a comprehensive set of examination questions and marking guides from the March 2026 Computer Science Mock GCE and Quantitative Analysis assessments. These materials are essential for students and educators focusing on systems architecture, statistics, and programming logic.

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2026 Mock GCE Revision: Computer Science & Quantitative Analysis

Part 1: Computer Science – Theory & Logic

Section 1: Operating Systems and Hardware

1. Operating Systems:

   • (a) Define the term Operating System and state any two (02) of its functions.

   • (b) Classify the following storage media by stating their technology and method of accessing data (Sequential or Direct):

     • Magnetic tape

     • Flash drive

     • Solid state drive

     • CD-RW

2. Application Software:

   • State two examples of application software required to:

     • Enable a learner to work with data that requires calculation.

     • Design graduation certificates.

3. The Machine Cycle:

   • With the aid of a well-annotated diagram, explain the machine cycle.

Section 2: Algorithms and Programming

Scenario: A teacher intends to write a program to calculate the average between two test marks ($T1$ and $T2$).

1. Definitions:

   • Differentiate between source code and object code.

   • What is a program?

2. Pseudocode Analysis:

   • (a) Identify and name the variables in the provided algorithm.

   • (b) Define variable and datatype.

   • (c) Which datatype is most suitable for calculating test averages?

   • (d) Practical Task: Represent the algorithm using a standard flowchart.

Section 3: Logic Gates and Digital Media

1. Logic Gates: Sketch the following gates, clearly labelling inputs and outputs: XOR, NAND, and NOR.

2. Data Representation:

   • Define a pixel.

   • Scenario: A black and white image uses a single bit per pixel (Black = 1, White = 0). If the first byte is at memory location 187, explain how the image is stored row-by-row.

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Part 2: Computer Science – Paper 1 (Marking Guide)

Qs	Key Concepts & Correct Answers
1	C. LAN: Local Area Network covers small areas like classrooms.
2	D. Protect Intellectual Property: A core tenet of computer ethics.
3	A. Machine-to-Machine (M2M): IoT devices interact without human input.
4	C. Binary: The only language understood at the hardware level.
5	C. Algorithm: A step-by-step procedure for solving a problem.
6	B. Truth Table: Shows all input combinations and corresponding outputs.
7	B. Project Management: Planning and controlling resources to achieve goals.
8	C. Mouse: A standard pointing device used to control the cursor.

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Part 3: Quantitative Analysis & Statistics

Question 1: Economic Indices

Using 2023 as the base year for household items (Rice, Oil, Soap) in Ekona:

• (a) Compute the Laspeyres price and quantity index.

• (b) Compute the Paasche price and quantity index.

• (c) Calculate Fisher’s Price and Quantity Index.

• (d) Analysis: If average income rose from 180,000 FCFA to 210,000 FCFA, determine if households are better or worse off.

Question 2: Descriptive Statistics

Based on a distribution of monthly profits for a restaurant at Biaka Junction:

• (a) Draw a cumulative frequency curve (ogive) and estimate the median profit.

• (b) Calculate the mean monthly profit.

• (c) Estimate the modal profit.

• (d) Determine Pearson’s First Coefficient of Skewness.

Question 3: Hypothesis Testing

A food-processing company claims its product weight is 500g. A sample of 64 packages shows a mean of 495g with a standard deviation of 20g.

• (a) State the null and alternative hypotheses.

• (b) Calculate the test statistic.

• (c) Draw a normal distribution showing the rejection region.

• (d) Make a decision at a 5% level of significance.

• (e) Calculate the 95% confidence interval for the true mean weight.

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Category: Examination Prep / Computer Science

Tags: #GCE2026 #MockGCE #Statistics #Algorithms #ComputerScience #CameroonGCE