IT Support Interview Questions & Answers
Top Questions & Sample Answers
Q: How do you troubleshoot a computer that won't start?
A: Check power supply, cables, and battery. Listen for beeps (POST). Try booting into safe mode or using recovery
tools.
Q: What steps would you take to fix a computer with no internet access?
A: Check Ethernet/Wi-Fi, run ipconfig, try pinging router/internet, renew IP, check DNS settings, restart router if needed.
Q: What is Active Directory and why is it used?
A: AD is a Microsoft service used for managing users, groups, and computers in a domain. It helps centralize user
access and security policies.
Q: How do you reset a user's password in Active Directory?
A: Open Active Directory Users and Computers, find the user, right-click and select 'Reset Password'.
Q: What's the difference between NTFS and Share permissions?
A: NTFS applies to local file system, Share permissions apply to network access. The most restrictive applies when both
are set.
Q: What would you do if a printer shows 'offline'?
A: Check cables, restart printer spooler service, reinstall drivers, try connecting to another port or reboot printer.
Q: What is Group Policy?
A: Group Policy allows admins to manage user and computer configurations across a domain, like password policies or
software restrictions.
Q: How do you handle a virus infection on a computer?
A: Disconnect from the network, run antivirus scans, isolate files, and check registry/startup entries. Reimage if
necessary.
Q: What is the purpose of DHCP and DNS?
A: DHCP assigns IP addresses to devices. DNS translates domain names to IP addresses for easier access to services.
Q: How do you respond to a slow computer complaint?
A: Check task manager, disable startup apps, scan for malware, run disk cleanup, and ensure enough RAM is available.
Q: Describe how you'd back up a user's data before formatting.
A: Copy user profile folders (Desktop, Documents, Downloads) to external drive or network storage. Verify integrity
IT Support Interview Questions & Answers
before format.
Q: What is the difference between Full and Incremental backups?
A: Full backup saves all data, incremental saves only changed files since last backup. Incremental is faster and saves
space.
Q: What is MFA and why is it important?
A: Multi-Factor Authentication adds a second verification step (e.g., SMS, app) beyond a password, enhancing account
security.
Q: What steps would you take for a password policy update in a domain?
A: Use Group Policy Management, update settings under Default Domain Policy, and enforce new rules like length,
complexity.
Q: How do you manage software installations in a corporate environment?
A: Use software deployment tools (like SCCM), keep inventory updated, ensure compliance with licensing, and test in
staging.
Q: How do you document a resolved issue?
A: Log the problem description, steps taken, resolution, and any recommendations in the ticketing system.
Q: How would you explain a technical issue to a non-technical user?
A: Use simple language, analogies, and visual aids. Avoid jargon and make sure they understand the resolution
process.
Q: What do you do if an issue is beyond your skill level?
A: Document all findings, escalate to higher support tier, and follow up with the user to keep them informed.
Q: How do you stay updated with IT trends?
A: Follow tech blogs, take online courses (LinkedIn Learning, Coursera), and participate in forums or webinars.
Q: What are your strengths as an IT Support Specialist?
A: Strong troubleshooting skills, clear communication, patience with users, and thorough documentation habits.