IT Support Engineer
Interview Questions.
15 practice questions across 10 skills — each with what the interviewer is really listening for. Prepare with intent, not guesswork.
Free · No signup · Grouped by skill
How to use this page
Don't memorise answers. For each question, read what the interviewer is looking for, then practise answering out loud in your own words with a real example. The notes describe strong answers and common red flags — they are for your prep, not a script.
Troubleshooting
2 questionsA user says 'the internet is down.' Walk me through how you troubleshoot it.
IntermediateWhat the interviewer is looking for: Strong answers work systematically — is it one user or many, local versus network, DNS versus connectivity — narrowing the cause. Randomly trying fixes without isolating the layer is a red flag.
A recurring issue keeps generating tickets. How do you handle it?
IntermediateWhat the interviewer is looking for: Look for treating it as a problem to root-cause and fix permanently, not just closing tickets. Endlessly patching the same issue is a red flag.
Active Directory
1 questionHow do you manage users and permissions in Active Directory?
IntermediateWhat the interviewer is looking for: Look for group-based least privilege, joiner/leaver processes, and using Group Policy. Direct per-user permissions and stale accounts are red flags.
DNS
1 questionHow does DNS work, and how would you diagnose a name-resolution problem?
IntermediateWhat the interviewer is looking for: Strong candidates explain resolution and caching and use tools like nslookup/ping to trace it. Not understanding DNS basics is a red flag for support.
TCP/IP
1 questionA user can get an IP but cannot reach anything. How do you approach it?
IntermediateWhat the interviewer is looking for: Look for checking gateway, subnet, DNS, and connectivity layer by layer. Guessing without a structured approach is a red flag.
DHCP
1 questionHow do you handle a DHCP issue where devices are not getting addresses?
IntermediateWhat the interviewer is looking for: Strong answers check the scope, lease exhaustion, and server/relay, understanding the DHCP process. Not knowing how DHCP assigns addresses is a red flag.
Ticketing Systems
2 questionsHow do you prioritise and manage tickets when many come in at once?
BasicWhat the interviewer is looking for: Look for triage by impact and urgency, SLA awareness, and clear updates to users. Working first-in-first-out regardless of severity is a red flag.
How do you follow an ITIL-style process for incidents versus requests?
BasicWhat the interviewer is looking for: Strong candidates distinguish incidents, requests, and problems, and follow process for consistency and root-cause fixes. No process discipline is a red flag at scale.
Communication
2 questionsHow do you communicate a technical fix to a frustrated non-technical user?
BasicWhat the interviewer is looking for: Strong candidates stay calm and empathetic, use plain language, and confirm the issue is resolved. Talking down to users or dismissing them is a red flag.
How do you make sure you actually resolved an issue and the user is satisfied?
BasicWhat the interviewer is looking for: Strong answers confirm the fix with the user and document it. Closing tickets without confirmation is a red flag.
Hardware Support
1 questionHow do you diagnose a hardware problem versus a software one?
IntermediateWhat the interviewer is looking for: Look for isolating with swaps, diagnostics, and event logs, and knowing when to replace versus repair. Replacing parts randomly is a red flag.
PowerShell
1 questionHow do you use PowerShell to make repetitive support tasks faster?
IntermediateWhat the interviewer is looking for: Strong answers automate account tasks, checks, and reporting to reduce toil. Doing everything manually forever is a limitation.
VPN
1 questionHow do you support remote users securely?
BasicWhat the interviewer is looking for: Look for VPN with MFA, secure remote tools, and verifying identity. Exposing remote access insecurely is a red flag.
Behavioural & role-general
2 questionsTell me about a tricky issue you resolved. How did you approach it?
BasicWhat the interviewer is looking for: Look for methodical diagnosis, persistence, and clear communication. A story with no method is a red flag.
How do you keep learning as technology and systems change?
BasicWhat the interviewer is looking for: Strong answers show curiosity, home labs, certifications, or reading. A passive attitude to learning is a limitation in IT.