Information Communication Technology CPA Revision Kit

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SAMPLE WORK

Complete copy of INFORMATION COMMUNICATION TECHNOLOGY (ICT ) Revision Kit is available in SOFT copy (Reading using our MASOMO MSINGI PUBLISHERS APP) and in HARD copy

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Email: [email protected]

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TOPIC 1

INTRODUCTION TO INFORMATION COMMUNICATION TECHNOLOGY (ICT)

QUESTION 1

December 2025 Question One A

List THREE types of computer input devices. (3 marks)

MASOMO MSINGI ANSWER

Keyboard: The primary device for typing text, numbers, and commands, featuring alphanumeric keys, function keys, and controls.
Mouse: A pointing device that controls the on-screen cursor, allowing users to click, drag, and navigate graphical interfaces.
Microphone: Captures sound, enabling voice commands, audio recording, and online communication.
Scanner: Converts physical documents, photos, or text into digital formats for the computer.
Webcam: Captures live video and images, commonly used for video conferencing and streaming

QUESTION 2

August 2025 Question One C

Using suitable examples, explain SIX roles of information communication technology (ICT) in shaping the modern business environment. (12 marks)

MASOMO MSINGI ANSWER

Improving customer relationship management (CRM): ICT tools help businesses manage customer interactions, track behavior, and provide personalized service, leading to enhanced customer satisfaction and loyalty.

Example: Companies use CRM software like Salesforce to log every customer call, email, and purchase history. This allows customer service agents to view a customer’s complete history and address issues efficiently.

Supporting e-commerce and market expansion: ICT enables businesses to establish an online presence, such as e-commerce websites and mobile apps, providing access to a global audience and operating 24/7.

Example: A small artisanal business can use an e-commerce platform like Shopify to sell its products worldwide, effectively competing with larger enterprises and expanding its market reach far beyond a local physical storefront.

Enabling data management and analytics: Modern businesses generate vast amounts of data. ICT tools collect, store, process, and analyze this data to provide valuable insights for strategic decision-making.

Example: A retail company might use business intelligence platforms like Tableau or Power BI to analyze customer purchasing habits, allowing managers to identify trends, optimize product offerings, and launch targeted marketing campaigns.

Enhancing operational efficiency and productivity: By automating repetitive tasks and streamlining workflows, ICT significantly boosts productivity and reduces human error.

Example: Retail businesses use Point-of-Sale (POS) systems that automatically track sales, manage inventory levels, and trigger reorders, eliminating manual record-keeping and ensuring optimal stock levels.

Facilitating communication and collaboration: ICT provides essential tools that enable seamless and rapid communication, breaking down geographical barriers.

Example: Multinational corporations use unified communication software like Microsoft Teams

Optimizing supply chain management (SCM): ICT provides visibility across the entire supply chain, from manufacturing to delivery, allowing for better coordination and reduced costs.

Example: Large logistics companies use GPS tracking and IoT sensors to monitor the real-time location and environmental conditions of shipments, optimizing delivery routes and ensuring products arrive on time and in good condition.

Strengthening cybersecurity and data protection: As businesses become more digital, protecting sensitive data from cyber threats is crucial. ICT provides the necessary security infrastructure to safeguard information.

Example: A bank implements multi-factor authentication (MFA) and encryption technologies to protect customer financial data and internal communications, building customer trust and ensuring compliance with data protection regulations.

QUESTION 3

August 2025 Question Three A and B

Identify FOUR mechanical devices that were used for counting before the emergence of electronic computers. (4 marks)
Explain FOUR functions of programming language translators. (4 marks)

MASOMO MSINGI ANSWER

Mechanical devices that were used for counting before the emergence of electronic computers.

Abacus: One of the earliest known adding machines, this device uses beads on rods to perform calculations. Its origins are ancient, with variations used across different cultures for thousands of years.

Napier’s Bones: Invented by John Napier in 1614, this is a set of rods with numbers on them that simplifies multiplication and division using a method similar to long multiplication.

Pascaline: Created by Blaise Pascal around 1642, this was one of the first mechanical calculators to perform addition and subtraction automatically using gears and wheels.

Slide Rule: This device, popular in the 19th and 20th centuries, uses scales based on logarithms to perform multiplication, division, and other functions such as roots and exponents.

Functions of programming language translators.

Translation of Source Code to Machine Code: The fundamental purpose of a translator is to convert the source code written in a high-level (or assembly) language into machine code (object code) that a computer’s central processing unit (CPU) can directly understand and execute.
Error Detection and Diagnostics: Translators scan the source code for syntax errors (grammatical mistakes in the code), semantic errors (logic or type compatibility issues), and other issues. They provide diagnostic messages to help programmers identify and correct these errors.
Code Optimization: Compilers, in particular, analyze the entire program to optimize the translated machine code, making the program run faster or use less memory space. This ensures the resulting program is efficient in its use of system resources.
Management of Memory Allocation and Resources: The translator manages the allocation of memory portions from the operating system, maps relative addresses to physical memory addresses, and initializes registers to prepare the program for execution.
Linking and Loading (for compilers): Compilers generate object code that may need to be combined with other object modules or library routines. A linker combines all these parts into a single, complete executable file, which is then placed in memory by a loader to run. (Interpreters handle this differently, by executing line by line without creating a separate executable file).

QUESTION 4

August 2025 Question Four B and D

(b) Highlight SIX factors to be taken into consideration when selecting a printer for purchase. (6 marks)

(d) Discuss THREE data processing modes. (6 marks)

MASOMO MSINGI ANSWER

(b) Factors to be taken into consideration when selecting a printer for purchase.

Primary purpose / type: Determines cost, speed, and quality. Inkjet is best for color, photos, and lower volume. Laser is best for fast, high-volume black-and-white text. All-in-One adds scanning, copying, and often faxing.
Total cost of ownership (TCO): A cheap printer can have very expensive cartridges, making it costly to run over time. Research the cost per page (CPP) of the replacement ink/toner.
Print volume & speed: How much and how fast you print. For a busy office, you need high PPM and a robust Duty Cycle (the maximum pages the manufacturer recommends per month) to avoid premature wear.
Print quality & resolution: Higher DPI means sharper, more detailed prints. This is especially important if you plan to print high-quality photos or detailed graphics.
Connectivity: Ensure it supports how you want to print (from a computer, laptop, smartphone, or tablet). Wi-Fi Direct, Apple AirPrint, or Google Cloud Print are modern conveniences to look for.
Paper handling & capacity: A large tray is crucial for high-volume use. Auto Duplexing (printing on both sides automatically) saves paper. Check if it handles special paper sizes (A3, legal) or media (cardstock, envelopes).
Physical size and location: A large, high-volume laser printer might not fit on your home desk. Similarly, check the noise level (measured in decibels) if the printer will be used in a shared or quiet environment.

(d) Data processing modes.

Batch processing: This method involves collecting data over a period and then processing it all together in a batch. It’s ideal for large-scale, non-urgent tasks where speed isn’t a critical factor, such as payroll systems or billing.
Real-time processing: This mode processes data immediately as it is input, providing an instant response. It is critical for applications that require up-to-the-second information, like ATM transactions or control systems.
Online processing: This method processes data as transactions occur, with a direct connection to the computer’s CPU. It can handle tasks in real-time or be used for continuous operations like a barcode scanner processing items at a checkout.

QUESTION 5

August 2025 Question Five B

(i) Explain the term “information centre”. (2 marks)

(ii) Summarise FOUR services offered by an information centre. (4 marks)

MASOMO MSINGI ANSWER

(i) The term “information centre”.

An Information Centre is a central location within an organization, such as a library, that responds to internal inquiries, highlights business needs, and matches different departments to ensure the smooth running of the organization by managing and disseminating information and knowledge effectively.

(ii) Summarise FOUR services offered by an information centre.

Specialized research and reference services: Information centers employ subject-matter experts who provide in-depth research assistance and technical inquiries that require more than a quick, factual answer. This can involve guiding users to the most relevant resources or providing expert consultation.
Information analysis and synthesis: A core function is the evaluation, analysis, and interpretation of raw data and information from various sources. This processed information is then synthesized and repackaged into user-friendly formats like market reports, technical digests, or state-of-the-art reviews to support decision-making.
Current awareness services (CAS) and selective dissemination of information (SDI): These services keep users updated with the latest developments, trends, and new publications in their specific fields of interest. This can involve regular newsletters, title announcement bulletins, or personalized alerts tailored to an individual’s research profile.
Document delivery service (DDS): This service provides users with access to original documents, such as research papers, articles, or reports, which may not be available in the centre’s own collection. This often involves a system for interlibrary loans or obtaining materials from other institutions.
Educational and training services: Many information centres offer training programs, workshops, and user education sessions to help users enhance their information literacy skills and effectively utilize available resources and technologies. This ensures users can make the most of online databases, search tools, and e-learning platforms.

SAMPLE WORK

Complete copy of INFORMATION COMMUNICATION TECHNOLOGY (ICT ) Revision Kit is available in SOFT copy (Reading using our MASOMO MSINGI PUBLISHERS APP) and in HARD copy

Phone: 0728 776 317

Email: [email protected]

QUESTION 6

August 2025 Question Six B

Outline FOUR measures one could take to reduce wrist strain when using a computer. (4 marks)

MASOMO MSINGI ANSWER

Maintain a neutral wrist position: Adjust your chair and keyboard height so your forearms are roughly parallel to the floor when typing, and your elbows are at a comfortable 90-degree angle. Your wrists should “float” slightly above the keyboard, don’t rest them on the desk or a wrist rest while you are actively typing.
Use ergonomic accessories: Ergonomic Keyboards (like split or angled designs) promote a more natural hand position. Avoid using the keyboard’s legs to tilt it upward, as this forces your wrists into extension. Ergonomic Mice (like vertical or trackball designs) keep your hand in a neutral, “handshake” position, reducing forearm rotation and pressure on the wrist.
Take frequent and regular breaks: Action: Incorporate short, frequent breaks into your routine. Aim for a short rest break every 20-30 minutes.
Practice gentle typing and mouse grip: Hold the mouse with a light grip, rather than squeezing it tightly, and use your entire arm (shoulder and elbow) to move the mouse, rather than just your wrist.

QUESTION 7

August 2025 Question Seven A

Distinguish between “portability” and “compatibility” as used in computer hardware. (4 marks)

MASOMO MSINGI ANSWER

Portability refers to a system’s ability to be moved or transferred to different environments with minimal changes, while compatibility is the ability of different components or systems to work together correctly in the same environment. For example, a portable application can run on both Windows and macOS without rewriting its code, whereas a compatible hardware component can be physically plugged into a standard slot on a motherboard without causing issues.

QUESTION 8

April 2025 Question One A

Explain the following features of the fifth-generation computers:

Artificial intelligence (AI). (2 marks)
Parallel processing. (2 marks)
Quantum computing. (2 marks)

MASOMO MSINGI ANSWER

Artificial intelligence (AI) – Fifth-generation computers incorporate Artificial Intelligence (AI)to enable machines to perform tasks that typically require human intelligence, such as reasoning, learning, problem-solving, and decision-making. AI allows computers to understand natural language, recognize patterns, and improve performance through machine learning and neural networks.
Parallel processing. – Fifth-generation computers use parallel processing, where multiple processors work simultaneously to execute tasks faster. Unlike traditional sequential processing, parallel processing divides complex problems into smaller parts and solves them concurrently, significantly improving computational speed and efficiency.
Quantum computing – Quantum computing is an advanced feature of fifth-generation computers that leverages quantum bits (qubits) instead of classical binary bits. Qubits can exist in multiple states at once (superposition) and can be entangled, enabling quantum computers to solve complex problems (e.g., cryptography, drug discovery) much faster than conventional computers.

QUESTION 9

April 2025 Question Two A and C

(a) Distinguish between “embedded computers” and “integrated computers”. (4 marks)

(c) Examine FOUR roles of Integrated Development Environments (IDEs) in Information Communication Technology (ICT) development. (8 marks)

MASOMO MSINGI ANSWER

(a) Distinction between “embedded computers” and “integrated computers”.

An embedded computer is a specialized computing device designed to perform a specific, dedicated function within a larger mechanical or electronic system. It’s “embedded” as a component, not typically as a standalone general-purpose computer. They are optimized for efficiency, reliability, and often low power consumption for their particular task. They often have real-time computing constraints, meaning tasks must be completed within strict timeframes.

Examples: The microcontroller in a washing machine that controls wash cycles, the computer in a car’s anti-lock braking system (ABS), a smart thermostat, a digital camera, a medical device, or an industrial automation controller.

“Integrated” generally refers to the act of combining various components (hardware and/or software) into a single, unified system that functions as a whole. This often implies bringing together disparate parts to create a more streamlined or efficient solution.

he term “integrated computer” can be used in several contexts:

All-in-One PCs: This is a common understanding of “integrated desktop computer,” where the computing hardware (CPU, memory, storage) and the display are built into a single housing (e.g., an iMac). The focus is on a compact, aesthetically pleasing, and easy-to-set-up desktop experience.
Integrated Circuits (ICs): At a fundamental level, an integrated circuit is a “chip” that integrates many electronic components (transistors, resistors, etc.) onto a single semiconductor material. This is a form of integration.
Integrated Software Systems: This refers to software that combines multiple functionalities or applications into a single platform (e.g., an Enterprise Resource Planning (ERP) system that integrates finance, HR, and supply chain management).

An integrated development environment (IDE) is a software suite that consolidates basic tools required to write and test software.

Roles:

Streamlining Code Creation and Editing: IDEs provide advanced code editors with features like syntax highlighting (making code more readable), intelligent code completion (IntelliSense/autocompletion) that suggests code as you type (reducing errors and speeding up development), and real-time error detection that flags issues as you write. This significantly accelerates the coding process, reduces typos, and helps developers adhere to language syntax, leading to cleaner and more efficient code.
Facilitating Debugging and Error Resolution: A crucial role of IDEs is their integrated debugger. This powerful tool allows developers to pause the execution of their code at specific points (breakpoints), step through the code line by line, inspect the values of variables, and analyze the program’s call stack. This capability is invaluable for identifying, diagnosing, and resolving bugs and logical errors efficiently, which is critical for ensuring the reliability and functionality of ICT applications.
Automating Build and Compilation Processes: IDEs integrate compilers, interpreters, and build automation tools directly into their environment. They automate the often complex process of compiling source code into executable programs or interpreting scripts, linking necessary libraries, and packaging the final application. This automation saves developers significant time and effort, ensures consistency in the build process, and allows them to quickly test changes without manual configuration.
Enhancing Project Management and Navigation: IDEs offer robust features for managing entire software projects. They provide tools for organizing project files and directories, managing dependencies, and navigating large codebases with ease. Developers can quickly search for specific files, functions, or variables, and easily jump to definitions or references. This centralized project management capability is essential for handling the complexity of modern ICT projects, especially when working in teams.
Integrating Version Control and Collaboration: Most modern IDEs integrate seamlessly with popular version control systems like Git. This allows developers to perform essential version control operations (e.g., committing changes, pulling updates from a repository, pushing code, branching, merging) directly within the IDE’s interface. This integration is vital for collaborative ICT development, enabling teams to manage code changes, track revisions, and work together on the same codebase efficiently and without conflicts.

QUESTION 10

April 2025 Question Five A and B

Outline TWO effects of each of the cases below:
- Low hanging bulbs in a computer laboratory. (2 marks)
- Having taps and sinks in the computer laboratory. (2 marks)

Explain the following concepts in system theory:
- (2 marks)
- (2 marks)

MASOMO MSINGI ANSWER

Effects of each of the cases below:
- Low hanging bulbs in a computer laboratory.
Increased risk of breakage and injury: Low-hanging bulbs are highly susceptible to accidental knocks from students standing up, moving chairs, or carrying equipment. This can lead to the bulb shattering, posing a risk of cuts from broken glass and potential electrical hazards if the bulb is still connected to power.
Glare and eye strain for users: When bulbs hang too low, they can create direct glare on computer screens, making it difficult to see content clearly. This intense light can cause significant eye strain, headaches, and reduce user comfort and productivity during extended computer use.

Having taps and sinks in the computer laboratory.

High risk of water damage to equipment: The presence of water sources significantly increases the danger of spills, leaks, or even burst pipes. Water is highly conductive and can cause immediate short circuits, permanent damage to sensitive electronic components (CPUs, motherboards, hard drives), and lead to costly repairs or replacements.
Increased electrical safety hazards: Water and electricity are a dangerous combination. Any spillage near power outlets, cables, or exposed wiring can lead to severe electrical shocks, short circuits, or even fires. This poses a serious safety risk to anyone in the laboratory.

Explanation of concepts in system theory:
- Equifinality: is the principle that a system can reach the same final state or outcome from different initial conditions and through different paths. In other words, despite varying starting points or diverse routes taken, the system can converge on the same end result.
- Entropy: Entropy, in system theory (derived from thermodynamics), is a measure of the disorder, randomness, uncertainty, or degradation within a system. It represents the natural tendency of isolated systems to move from a state of order and differentiation towards a state of increasing disorganization, homogeneity, and eventual breakdown or equilibrium.

QUESTION 11

April 2025 Question Seven A

Distinguish between “computer onboard devices” and “peripheral devices”. (2 marks)

MASOMO MSINGI ANSWER

Computer Onboard Devices (or Integrated Devices): These are components that are built directly into the computer’s main circuit board, typically the motherboard, or are considered fundamental and essential parts of the core computer system. They are often integrated to save space, reduce costs, and provide basic functionality out of the box.

Peripheral Devices: These are external hardware components that connect to a computer system to expand its capabilities or provide additional input, output, or storage functions. They are auxiliary to the core computing system

Information Communication Technology Revision Kit Hard Copy (Printed and Bound)

Written by MJ