IT Support Interview Questions
Prepare for your IT Support interview. Understand the required skills and qualifications, anticipate the questions you may be asked, and study well-prepared answers using our sample responses.
Interview Questions for IT Support
Walk me through how you'd troubleshoot a user who can't connect to the office Wi‑Fi while others can.
You’re juggling pings from three executives, a site outage ticket, and a new hire setup due this afternoon. How do you triage and set expectations?
What has been your experience implementing or administering SSO and identity platforms like Okta or Azure AD?
If you joined and discovered there was no MDM, how would you roll one out in the first 90 days?
Can you explain DNS vs DHCP to a non-technical colleague, and how you’d diagnose “website not found” complaints?
Tell me about a time you supported both macOS and Windows at scale. What tooling and provisioning approaches did you use?
What’s a repetitive IT task you’ve automated, and what impact did it have?
How do you handle a suspected phishing incident reported by an employee?
Describe your ideal onboarding and offboarding workflow. How do you partner with HR and managers?
We’re a remote-first team across time zones. What tools and practices enable effective remote support?
What is your process for building and maintaining an internal knowledge base?
Which support metrics do you watch most closely, and how have you improved them in past roles?
Tell me about a time you turned around a frustrated user interaction.
Why this startup, and why IT Support here specifically?
How do you operate when requirements are fuzzy and priorities change weekly?
Share a scenario where you partnered with engineering or security to resolve a tricky issue.
With a tight budget, how would you decide between upgrading laptops or investing in an MDM this quarter?
Walk me through how you’d communicate and manage a major SaaS outage affecting the whole company.
What is your approach to asset management in a fast-growing startup?
How do you train a non-technical team on a new tool rollout so adoption sticks?
How do you stay current with evolving tools, security threats, and best practices in IT support?
Describe a time you wore multiple hats beyond IT and what you learned from it.
If asked to map an IT roadmap for the next 12 months as we scale from 40 to 150 employees, what would you include at a high level?
What’s your opinion on BYOD versus company-managed devices for a startup at our stage?
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Walk me through how you'd troubleshoot a user who can't connect to the office Wi‑Fi while others can.
Employers ask this question to see your troubleshooting structure and your ability to isolate variables quickly. In your answer, show a step-by-step approach that rules out user error, device issues, and network problems, and explain when you would escalate.
Answer Example: "I start with basics: verify SSID, credentials, and whether the device can see other networks. I check IP/DNS via ipconfig/ifconfig, confirm DHCP lease, and try a static DNS. If it persists, I forget/re-add the network, test another device, and check the AP’s client list for blocks or MAC filtering. I document the steps in the ticket and escalate to network logs if multiple users in the same area show similar symptoms."
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You’re juggling pings from three executives, a site outage ticket, and a new hire setup due this afternoon. How do you triage and set expectations?
Employers ask this question to assess prioritization, communication, and calm under pressure. In your answer, reference impact/urgency, how you communicate ETAs, what you delegate or escalate, and how you avoid dropping balls.
Answer Example: "I use an impact/urgency matrix: the site outage gets top priority due to company-wide impact, with a quick status update to all stakeholders. I communicate clear ETAs to the execs, offer an interim workaround if possible, and schedule the new hire setup for the next available slot while ensuring they can start with minimum functionality. I loop in teammates or escalate where appropriate and keep all parties updated until resolution."
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What has been your experience implementing or administering SSO and identity platforms like Okta or Azure AD?
Employers ask this question to gauge your grasp of identity lifecycle and security. In your answer, mention provisioning, MFA, SCIM, group-based access, and least-privilege practices with concrete examples.
Answer Example: "In my last role I administered Okta, enabling MFA across the org and setting up SCIM provisioning for our core SaaS apps. I built group-based access policies tied to HRIS attributes so new hires were provisioned automatically and deprovisioned within minutes. We reduced access requests by 30% and tightened least-privilege by auditing group memberships quarterly."
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If you joined and discovered there was no MDM, how would you roll one out in the first 90 days?
Employers ask this question to see if you can build foundational IT controls in a startup. In your answer, outline assessment, tool selection, pilot, communication, enrollment strategy, and phased enforcement.
Answer Example: "I’d assess the fleet (OS mix, ownership, compliance needs) and compare options like Jamf, Kandji, or Intune based on our stack. I’d run a small pilot with power users, define baseline profiles (disk encryption, screen lock, OS patching), and publish a clear rollout plan with FAQs and support. Then I’d enroll new hires first, followed by departments in waves, using light-touch enforcement before moving to full compliance."
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Can you explain DNS vs DHCP to a non-technical colleague, and how you’d diagnose “website not found” complaints?
Employers ask this question to test foundational networking knowledge and communication clarity. In your answer, define both simply and walk through a quick diagnostic flow you’d use.
Answer Example: "DNS is like the internet’s phonebook translating names to IPs, while DHCP hands out IP addresses to devices. For ‘website not found,’ I’d ping the IP, run nslookup to see if DNS resolves, try an alternate DNS, and flush local DNS cache. If it’s still failing, I’d check the host file, firewall/VPN settings, and traceroute to see where it breaks."
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Tell me about a time you supported both macOS and Windows at scale. What tooling and provisioning approaches did you use?
Employers ask this question to verify cross-platform depth and deployment experience. In your answer, mention imaging/provisioning methods and specific tools that ensured consistency.
Answer Example: "I supported a 60/40 Mac/Windows mix using ABM/DEP with Jamf and Windows Autopilot with Intune. We moved from golden images to zero-touch provisioning with standardized profiles and scripts for app delivery. It cut setup time from 2 hours to 20 minutes and reduced post-onboarding tickets by half."
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What’s a repetitive IT task you’ve automated, and what impact did it have?
Employers ask this question to see how you scale yourself in a resource-constrained environment. In your answer, cite the tool or script you used and quantify time or error reduction.
Answer Example: "I automated new user SaaS provisioning with a PowerShell script hitting Okta and Slack APIs based on HRIS attributes. It turned a 15-minute multi-step process into a 90-second task and eliminated common access mistakes. Over a quarter, it saved roughly 30 hours and improved day-one readiness."
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How do you handle a suspected phishing incident reported by an employee?
Employers ask this question to ensure you can respond quickly and reduce risk. In your answer, cover containment, verification, user support, and follow-up education.
Answer Example: "I advise the user not to interact further, collect the email headers, and submit it to our security tool for analysis. I block the sender/domain, reset credentials if the link was clicked, and scan the device. Then I post a brief company alert with indicators of compromise and run a micro-training to reinforce safe practices."
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Describe your ideal onboarding and offboarding workflow. How do you partner with HR and managers?
Employers ask this question to see lifecycle management and cross-functional coordination. In your answer, outline checklists, timelines, and controls that protect the business.
Answer Example: "I use a JML (joiner/mover/leaver) checklist integrated with HRIS triggers. For onboarding, I pre-provision hardware, SSO groups, and key apps before day one and schedule a 30-minute orientation. For offboarding, I disable SSO immediately, collect assets, transfer data ownership, and close access within SLA. I meet monthly with HR to refine the process and review exceptions."
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We’re a remote-first team across time zones. What tools and practices enable effective remote support?
Employers ask this question to evaluate your ability to support distributed teams. In your answer, reference tooling, async communication, and coverage strategies.
Answer Example: "I rely on RMM and remote control tools, centralized logging, and clear ticketing workflows with well-defined SLAs. I use Slack for quick triage, schedule office hours in key time zones, and create lightweight self-help guides. Dashboards alert me to device health so I can resolve issues proactively."
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What is your process for building and maintaining an internal knowledge base?
Employers ask this question to see how you reduce repeat issues and share knowledge. In your answer, describe structure, feedback loops, and upkeep cadence.
Answer Example: "I standardize articles with a simple template: purpose, steps, screenshots, and troubleshooting tips. I tag content for searchability, enable user feedback on each article, and review analytics to update or retire content quarterly. I also tie KB links into ticket macros to reinforce self-service."
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Which support metrics do you watch most closely, and how have you improved them in past roles?
Employers ask this question to check if you’re data-driven and improvement-minded. In your answer, mention 2–4 metrics and a concrete improvement story.
Answer Example: "I track first-contact resolution, CSAT, SLA attainment, and backlog age. In my last role, I noticed low FCR on access requests, so I added KB guides and automated group assignments. FCR rose 18% and CSAT improved by 0.3 points over a quarter."
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Tell me about a time you turned around a frustrated user interaction.
Employers ask this question to assess empathy and service mindset. In your answer, show how you de-escalated, set expectations, and followed through.
Answer Example: "A sales rep was upset about repeated VPN drops before a demo. I acknowledged the impact, offered a tethered hotspot workaround, and scheduled time to swap their client and update NIC drivers. I followed up after the demo and implemented a broader fix for the team, which earned positive feedback."
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Why this startup, and why IT Support here specifically?
Employers ask this question to understand your motivation and cultural fit. In your answer, connect your interests to the company’s mission and stage, and explain the impact you want to have.
Answer Example: "I’m drawn to your mission in the [industry] space and the chance to build reliable, human-centered support from the ground up. Early-stage environments energize me because I can set pragmatic standards, automate the basics, and directly improve productivity. I want to be the partner who keeps your team moving as you scale."
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How do you operate when requirements are fuzzy and priorities change weekly?
Employers ask this question to test adaptability and self-direction. In your answer, show how you create clarity, iterate, and communicate proactively.
Answer Example: "I break work into short sprints with clear, lightweight success criteria and check in frequently with stakeholders. I document assumptions, share quick prototypes or pilots, and adjust based on feedback. I keep a visible backlog so shifting priorities are transparent and trade-offs are understood."
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Share a scenario where you partnered with engineering or security to resolve a tricky issue.
Employers ask this question to assess cross-functional collaboration and technical depth. In your answer, describe the joint investigation, division of responsibilities, and outcome.
Answer Example: "We had intermittent SSO failures affecting a subset of users. I correlated ticket timestamps with IdP logs, while engineering inspected app error handling and timeouts. We found a clock skew on a proxy causing token validation issues; after fixing NTP and adding retries, errors dropped to near zero."
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With a tight budget, how would you decide between upgrading laptops or investing in an MDM this quarter?
Employers ask this question to see strategic thinking and resource trade-offs. In your answer, weigh risk, productivity, and total cost of ownership and propose a phased plan.
Answer Example: "I’d quantify current device performance issues versus the security and operational gains from MDM. If laptops are blocking productivity for a critical group, I’d prioritize targeted upgrades while launching a limited MDM deployment for new hires and high-risk roles. I’d present a phased roadmap showing how MDM reduces long-term support costs and risk."
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Walk me through how you’d communicate and manage a major SaaS outage affecting the whole company.
Employers ask this question to evaluate incident management and stakeholder communication. In your answer, outline status updates, workarounds, and post-incident actions.
Answer Example: "I’d verify via vendor status and our monitoring, then create a visible incident channel and send a concise update with scope, impact, and next steps. I’d post timed updates, suggest workarounds, and escalate to the vendor with logs. After resolution, I’d publish a brief postmortem and track action items."
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What is your approach to asset management in a fast-growing startup?
Employers ask this question because early discipline prevents chaos later. In your answer, cover inventory, tagging, lifecycle, and audits.
Answer Example: "I assign asset tags at receipt, record items in a central system with user assignment, warranty, and configuration details. I use check-in/out workflows, maintain a small pool of loaners, and schedule quarterly audits. Lifecycle planning ensures timely replacements and predictable budgeting."
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How do you train a non-technical team on a new tool rollout so adoption sticks?
Employers ask this question to see enablement skills beyond troubleshooting. In your answer, focus on role-based training, simple materials, and reinforcement.
Answer Example: "I segment training by role, provide concise guides and 2–3 minute videos, and host live Q&A sessions. I identify champions in each team, collect feedback, and iterate materials. Usage dashboards help me target follow-ups where adoption lags."
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How do you stay current with evolving tools, security threats, and best practices in IT support?
Employers ask this question to check for continuous learning. In your answer, mention specific sources, communities, and hands-on practice.
Answer Example: "I follow vendor blogs and security newsletters, participate in Slack communities, and test new tools in a lab environment. I pursue focused certifications when they align with our stack. I also join local meetups to trade playbooks with peers."
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Describe a time you wore multiple hats beyond IT and what you learned from it.
Employers ask this question to assess your flexibility and willingness to pitch in at a startup. In your answer, highlight ownership and outcomes without losing sight of IT priorities.
Answer Example: "At a previous startup I took on office AV and facilities during a move while maintaining support. I created a simple AV standard and vendor checklist, which reduced setup time for all-hands meetings by 70%. It taught me to prioritize ruthlessly and document so others could step in."
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If asked to map an IT roadmap for the next 12 months as we scale from 40 to 150 employees, what would you include at a high level?
Employers ask this question to gauge strategic planning and scalability. In your answer, touch on identity, device management, security baselines, and process maturity.
Answer Example: "I’d prioritize SSO/MFA hardening, full MDM enrollment with baseline policies, and maturing ticketing/KB workflows. I’d add asset lifecycle management, privileged access controls, and regular access reviews. I’d also budget for onboarding automation and begin SOC 2 readiness with documented controls."
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What’s your opinion on BYOD versus company-managed devices for a startup at our stage?
Employers ask this question to understand your judgment on policy trade-offs. In your answer, weigh speed and cost against security and supportability, and offer a pragmatic path.
Answer Example: "BYOD lowers upfront costs and speeds onboarding, but it complicates support and security. I favor a managed fleet as soon as feasible, with interim MAM on mobile and conditional access for BYOD. A phased transition with stipends and clear policies eases the shift while reducing risk."
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