Lesson 3 — Hardware vs. Software | Answer Key

You have completed the Knowledge Evaluation for Lesson 3 — Hardware vs. Software.

Now it is time to check your answers, understand the reasoning behind each one, and make sure you have built a solid understanding of the relationship between computer hardware and software.

Remember: the goal is not simply to get the correct answers. The goal is to understand why they are correct.

 

🧠 Check Your Knowledge

1. What is computer hardware?

Correct Answer: B. The physical components of a computer system

✅ Why Is This Correct?

Computer hardware consists of the physical parts of a computer system — the components that physically exist and can be touched.

Examples include:

  • CPU
  • RAM
  • Motherboard
  • SSD
  • Keyboard
  • Mouse
  • Monitor

Programs and instructions are software, not hardware.

🔍 Self-Check

Can you look at a computer and identify at least five pieces of hardware?

If yes, you understand the basic concept.

 

2. Which of the following is software?

Correct Answer: C. Operating system

✅ Why Is This Correct?

An operating system is software because it consists of programs and instructions that manage the computer and allow users and applications to interact with its hardware.

Windows, macOS, and Linux are examples of operating systems.

RAM, keyboards, and motherboards are physical components and therefore hardware.

🔍 Self-Check

Can you explain why you can touch the storage device containing an operating system but cannot physically touch the operating system itself?

If so, you understand an important distinction between hardware and software.

 

3. Which statement best describes software?

Correct Answer: B. Programs and instructions that tell hardware what to do

✅ Why Is This Correct?

Software provides the instructions that computer hardware executes.

Applications, operating systems, device drivers, utilities, and many other programs are forms of software.

Hardware performs operations, but software determines what operations should be performed.

A useful way to remember this relationship is:

Hardware performs. Software instructs.

 

4. Which of the following is an example of internal hardware?

Correct Answer: C. CPU

✅ Why Is This Correct?

The CPU (Central Processing Unit) is a physical component normally installed inside a computer.

It executes instructions and performs calculations required by software.

A web browser, spreadsheet application, and operating system are all examples of software.

🔍 Self-Check

Besides the CPU, can you name three other internal hardware components?

Possible examples include RAM, motherboard, SSD, HDD, GPU, and power supply.

 

5. What is the primary purpose of system software?

Correct Answer: B. Manage computer resources and provide an environment for other software

✅ Why Is This Correct?

System software helps control and manage the computer itself.

The operating system, for example, manages resources such as:

  • Memory
  • Storage
  • Hardware devices
  • Files
  • Processes
  • Applications

It also provides the environment in which application software can operate.

System software therefore serves as an essential connection between the computer’s hardware, applications, and users.

 

6. Which is an example of application software?

Correct Answer: A. Web browser

✅ Why Is This Correct?

A web browser is application software because it helps users perform a specific task: accessing and interacting with websites and web-based services.

RAM, the CPU, and the motherboard are all hardware components.

Other examples of application software include:

  • Word processors
  • Spreadsheet programs
  • Email applications
  • Media players
  • Communication applications
  • Graphic design programs

🔍 Self-Check

Think about the computer or device you are using now.

Can you identify three applications you use regularly and describe the task each one helps you perform?

 

7. Why might a hardware device require a driver?

Correct Answer: C. To help the operating system communicate with the hardware

✅ Why Is This Correct?

A device driver is software that helps the operating system communicate with a particular hardware device.

For example, printers, graphics adapters, network devices, and other components may depend on drivers to function correctly.

The driver does not physically repair or modify the hardware. Instead, it provides the software instructions necessary for communication between the operating system and the device.

This is an excellent example of hardware and software working together.

 

8. A computer is running very slowly. What should an IT professional conclude first?

Correct Answer: D. Both hardware and software causes should be investigated

✅ Why Is This Correct?

A slow computer can have many possible causes.

Possible hardware causes include:

  • Insufficient RAM
  • Failing storage
  • Thermal problems

Possible software causes include:

  • Too many programs running
  • Excessive background processes
  • Incorrect configurations
  • Software errors

An IT professional should not immediately assume that one particular component or program is responsible.

The correct approach is to investigate the symptoms, gather information, and test possible causes.

🔍 Self-Check

If two completely different problems can produce the same symptom, why is guessing dangerous in IT support?

If your answer involves investigating before taking action, you are beginning to think like an IT professional.

 

9. Which statement about hardware and software is correct?

Correct Answer: C. Hardware and software work together to create a functioning computer system

✅ Why Is This Correct?

Hardware and software perform different roles, but they depend on each other.

Hardware provides the physical computing resources.

Software provides instructions.

For example, a web browser requires:

  • CPU processing
  • RAM
  • Storage
  • Display hardware
  • Network hardware

At the same time, those hardware components require software such as the operating system and device drivers to coordinate their operations.

Neither side alone provides the complete computing experience.

 

10. A user says an application will not open. What is the best initial approach?

Correct Answer: C. Investigate the symptoms and consider possible software and hardware causes

✅ Why Is This Correct?

Professional troubleshooting begins with investigation, not assumptions.

An application that refuses to open could have many causes, including:

  • Corrupted application files
  • Operating system problems
  • Insufficient resources
  • Storage problems
  • Configuration errors
  • Compatibility problems

Immediately replacing the computer, deleting files, or assuming the application is permanently damaged would be premature.

The IT professional should first gather information and determine what is actually happening.

🔍 Self-Check

Ask yourself:

What do I know? What do I need to know? What evidence can help me identify the cause?

That mindset will become increasingly important throughout your IT training.

 

📊 Check Your Progress

Give yourself 1 point for each correct answer.

Maximum Score: 10 Points

ScoreResult
8–10🌟 Excellent Foundation
6–7✅ Passing
0–5🔄 Review Recommended

 

🎯 What’s Next?

🔄 If You Scored 0–5

Some important concepts need more practice before you continue.

🔙 Return to Lesson 3

Review the lesson and complete the Knowledge Evaluation again when you are ready.

🚀 If You Scored 6–10

You have demonstrated the knowledge needed to move forward.

Continue to Lesson 4 — Input, Processing, Output, and Storage →

Learn → Practice → Evaluate → Check → Review → Continue

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