Top 50 Windows Interview Questions and Answers for ICT Beginners and Support Technicians

You sit in an interview room, the laptop is open, and the first question sounds simple: “What is Windows?”

At first, it feels too easy. But then the interviewer follows up with NTFS permissions, Group Policy, Safe Mode, BitLocker, services, boot files, PowerShell, and troubleshooting a slow computer. Suddenly, the “simple” Windows interview becomes a real test of practical ICT knowledge.

I have seen this happen many times while supporting users, troubleshooting office computers, helping students prepare for ICT interviews, and working with Windows machines that behave perfectly one day and completely misbehave the next. The lesson is simple: Windows interview questions are not just about memorizing definitions. They test whether you can explain, troubleshoot, and think like a support technician.

This guide gives you 50 Windows interview questions and answers in a direct, human, and practical way. It is useful for beginners, ICT students, help desk candidates, junior system administrators, and anyone preparing for a Windows support role.

Windows Basics Interview Questions

1. What is Microsoft Windows?
Microsoft Windows is an operating system developed by Microsoft. It manages computer hardware, runs applications, controls files, provides a graphical user interface, and allows users to interact with the computer easily.

2. What are the main functions of an operating system?
An operating system manages hardware resources, memory, files, users, security, processes, devices, and software applications. In simple terms, it acts as a bridge between the user and the computer hardware.

3. What is the difference between Windows 10 and Windows 11?
Windows 11 has a redesigned interface, stronger hardware security requirements, improved Snap Layouts, updated Microsoft Store features, and deeper integration with modern security technologies such as TPM 2.0 and Secure Boot. Windows 10 remains familiar and stable, but Windows 11 is designed for newer hardware and newer security standards.

4. What is the Start menu used for?
The Start menu gives quick access to installed applications, system settings, power options, search, pinned apps, and recently used files. In support work, it is often the fastest entry point to tools such as Settings, Control Panel, PowerShell, and Device Manager.

5. What is the Control Panel?
Control Panel is an older Windows management area used to configure system settings such as network options, user accounts, devices, programs, and administrative tools. Some settings have moved to the modern Settings app, but Control Panel is still useful in many support situations.

6. What is the Windows Settings app?
The Settings app is the modern interface for configuring Windows. It handles personalization, updates, privacy, accounts, devices, apps, accessibility, network settings, and system information.

7. What is Task Manager?
Task Manager is a Windows tool used to view running apps, background processes, CPU usage, memory usage, disk activity, network activity, startup apps, and system performance. It is one of the first tools to open when a computer is slow or frozen.

8. What is Device Manager?
Device Manager shows the hardware devices installed on a computer. It helps technicians update drivers, uninstall faulty devices, disable hardware, check device status, and troubleshoot missing or malfunctioning drivers.

9. What is File Explorer?
File Explorer is the Windows tool used to browse files, folders, drives, network locations, and removable storage. It helps users organize documents, copy files, rename folders, and access shared resources.

10. What is the difference between shutdown, restart, sleep, and hibernate?
Shutdown turns off the computer. Restart turns it off and starts it again, which is useful after updates or troubleshooting. Sleep saves the session in memory and uses little power. Hibernate saves the session to disk and powers off more completely, which is useful for laptops.

File Systems, Permissions, and Storage

11. What is a file system?
A file system is the method an operating system uses to organize, store, retrieve, and manage files on a drive. Common Windows file systems include NTFS, FAT32, and exFAT.

12. What is NTFS?
NTFS stands for New Technology File System. It supports permissions, encryption, compression, large files, file ownership, auditing, and better reliability compared to older file systems such as FAT32.

13. What is the difference between NTFS and FAT32?
NTFS supports advanced security permissions, larger files, encryption, and better reliability. FAT32 is simpler and widely compatible with older devices, but it does not support the same file security features and has a 4GB single-file size limit.

14. What are NTFS permissions?
NTFS permissions control who can access files and folders and what they can do with them. Examples include Read, Write, Modify, Read & Execute, and Full Control.

15. What is the difference between share permissions and NTFS permissions?
Share permissions apply when a folder is accessed over the network. NTFS permissions apply locally and over the network. When both are used, the most restrictive effective permission usually applies.

16. What is a drive letter?
A drive letter is the letter assigned to a storage device or partition, such as C:, D:, or E:. The C: drive is normally where Windows is installed.

17. What is Disk Management?
Disk Management is a Windows tool used to create, delete, format, shrink, extend, and assign drive letters to partitions. It is commonly used when adding new storage or troubleshooting missing drives.

18. What is BitLocker?
BitLocker is a Windows security feature that encrypts entire volumes to protect data if a device is lost, stolen, or improperly accessed. It is especially important for laptops and business computers.

19. What is a recovery key in BitLocker?
A BitLocker recovery key is a special key used to unlock an encrypted drive when Windows cannot verify that the device is safe to boot normally. Users should store it securely because losing it can make data recovery difficult.

20. What is System Restore?
System Restore allows Windows to roll back system files, drivers, and settings to an earlier restore point. It does not normally delete personal files, but it can help after a bad driver installation or unstable update.

Users, Security, and Administration

21. What is a user account in Windows?
A user account allows a person to sign in and use Windows with their own profile, permissions, settings, files, and access rights.

22. What is the difference between a standard user and an administrator?
A standard user can use applications and manage personal files, but cannot make major system changes. An administrator can install software, change system settings, manage users, and perform elevated tasks.

23. What is User Account Control?
User Account Control, or UAC, is a security feature that asks for confirmation before allowing changes that require administrator privileges. It helps prevent unauthorized system changes.

24. What is Windows Security?
Windows Security is the built-in protection center in Windows. It includes virus and threat protection, firewall settings, device security, account protection, app control, and other security tools.

25. What is Microsoft Defender Antivirus?
Microsoft Defender Antivirus is the built-in anti-malware protection in Windows. It scans files, detects threats, provides real-time protection, and works with Windows Security.

26. What is Secure Boot?
Secure Boot is a security feature that helps ensure only trusted software starts during the boot process. It protects against certain boot-level malware and unauthorized bootloaders.

27. What is TPM?
TPM stands for Trusted Platform Module. It is a hardware-based security chip or firmware feature used to protect encryption keys, credentials, and security measurements.

28. What is Active Directory?
Active Directory is a Microsoft directory service used in business networks to manage users, computers, groups, authentication, and access to resources from a central place.

29. What is Group Policy?
Group Policy is a Windows feature used to centrally manage operating system settings, application settings, security rules, and user configurations, especially in Active Directory environments.

30. What is a domain?
A domain is a managed network environment where users, computers, and resources are controlled centrally, usually through Active Directory. It helps organizations manage access, policies, and authentication.

Windows Networking Questions

31. What is an IP address?
An IP address is a unique address used to identify a device on a network. It allows computers, printers, routers, and servers to communicate.

32. What is DHCP?
DHCP stands for Dynamic Host Configuration Protocol. It automatically assigns IP addresses and other network settings to devices, reducing manual configuration work.

33. What is DNS?
DNS stands for Domain Name System. It translates domain names such as example.com into IP addresses that computers use to locate servers.

34. What is the use of the ping command?
The ping command tests whether another device or server is reachable over the network. It also shows response time and packet loss, which helps in troubleshooting connectivity issues.

35. What does ipconfig do?
The ipconfig command displays network configuration details such as IP address, subnet mask, default gateway, and DNS servers. Commands such as ipconfig /release, /renew, and /flushdns are useful during troubleshooting.

36. What is a default gateway?
A default gateway is the router address a computer uses to reach networks outside its local network, including the Internet.

37. What is a firewall?
A firewall controls incoming and outgoing network traffic based on rules. Windows Defender Firewall helps block unwanted connections while allowing trusted communication.

38. What is Remote Desktop?
Remote Desktop allows a user to connect to and control a Windows computer from another device over a network. It is useful for support, administration, and remote work.

39. What is a shared folder?
A shared folder is a folder made available over a network so other authorized users can access its files. Access should be controlled using share and NTFS permissions.

40. How do you troubleshoot no internet on Windows?
Start by checking Wi-Fi or Ethernet connection, IP address, default gateway, DNS settings, airplane mode, router status, and network adapter drivers. Then test with ping, restart the adapter, flush DNS, and confirm whether other devices on the same network can connect.

Troubleshooting and Performance Questions

41. What do you do when Windows is slow?
Check Task Manager for high CPU, memory, disk, or startup usage. Then review startup programs, storage space, malware scans, Windows updates, background services, drivers, and whether the computer uses an HDD or SSD.

42. What is Safe Mode?
Safe Mode starts Windows with a minimal set of drivers and services. It helps troubleshoot driver problems, malware issues, startup failures, and software conflicts.

43. What is Event Viewer?
Event Viewer records system, security, application, and setup logs. It helps technicians investigate crashes, failed services, login events, driver errors, and update problems.

44. What is Windows Update?
Windows Update downloads and installs security patches, bug fixes, drivers, and feature improvements. Keeping Windows updated reduces security risks and improves stability.

45. What is a driver?
A driver is software that allows Windows to communicate with hardware such as printers, keyboards, graphics cards, network adapters, and storage controllers.

46. What do you do if a printer is not working in Windows?
Check power, cables, Wi-Fi connection, paper, ink or toner, printer status, default printer settings, print queue, driver status, and whether the printer is reachable on the network.

47. What is the Blue Screen of Death?
The Blue Screen of Death, or BSOD, appears when Windows encounters a serious system error it cannot safely recover from. Common causes include faulty drivers, hardware problems, memory errors, corrupted system files, and storage issues.

48. What are SFC and DISM?
SFC, or System File Checker, scans and repairs protected Windows system files. DISM, or Deployment Image Servicing and Management, repairs the Windows image that SFC may rely on.

Advanced Windows Support Questions

49. What is PowerShell?
PowerShell is a command-line shell and scripting language used to automate tasks, manage Windows systems, configure services, gather information, and administer local or remote computers.

50. How would you prepare for a Windows technical interview?
Do not only memorize answers. Open a Windows computer and practice: create users, check Task Manager, use ipconfig, open Event Viewer, manage services, test permissions, review Windows Security, and troubleshoot a real network issue. Interviewers trust candidates who can explain what they have actually done.

Final Thoughts

Windows interviews are easier when you understand how people actually use computers in schools, offices, cyber cafés, homes, and business environments. The interviewer wants to know whether you can keep systems working, protect user data, and solve problems calmly.

Start with these 50 questions, then practice on a real Windows machine. Open the tools, run the commands, break small things safely, fix them, and write down what you learn. That practical confidence is what separates a memorized answer from a technician’s answer.