MSP Technical Interview Questions: How to Prepare and Ace the Interview

MSP technical interviews are different from in-house IT interviews. You're not just being tested on depth of knowledge — you're being evaluated on breadth, problem-solving under pressure, and the ability to communicate with non-technical people. This guide covers what to expect and how to prepare.

If you're also working on your resume, check our resume builder for MSP-specific tips. And before you interview, make sure you know your worth with our salary benchmark tool.

How MSP Interviews Work

Most MSP technical interviews follow a multi-stage process:

1. Phone screen — Cultural fit, salary expectations, basic technical filtering
2. Technical interview — Hands-on knowledge, scenario questions, troubleshooting methodology
3. Manager/senior interview — Career goals, team fit, client communication ability
4. Sometimes: practical test — Troubleshooting a scenario, configuring a lab, or explaining a concept to a non-technical person

The technical interview is where most people stumble. Let's break it down.

Networking Questions

Networking is foundational for MSP work. Expect questions across these areas:

TCP/IP and DNS

"A client reports they can't access a specific website but can access others. Walk me through your troubleshooting steps."

A good answer covers: 1. Verify the issue — is it just one user or multiple? 2. Check DNS resolution (nslookup, dig) 3. Test with IP directly (bypass DNS) 4. Check firewall/proxy settings 5. Check if the site is down for everyone (external lookup) 6. Check host file entries 7. Verify DNS server health

"Explain the difference between DNS forward and reverse lookup zones."

Forward: domain name → IP address (what most people think of as DNS). Reverse: IP address → domain name (used for verification, spam filtering, and troubleshooting). Mention that reverse DNS is important for email delivery and some security tools.

VPN and Remote Access

"A remote user can't connect to the VPN. What do you check?"

Expected coverage: - Internet connectivity at user's end - VPN client version and configuration - Authentication (MFA, credentials, certificate) - VPN concentrator/server status - Split tunneling configuration - Firewall rules (client-side and server-side) - ISP-level blocking (some Australian ISPs block certain VPN protocols)

"What's the difference between IPSec and SSL VPN? When would you use each?"

IPSec: network-layer, full network access, typically used for site-to-site. SSL/TLS VPN: application-layer, clientless options, easier to deploy, better for remote users. MSPs increasingly use SSL VPNs for simplicity.

Wireless

"How would you troubleshoot poor Wi-Fi performance in an office?"

Should cover: - Site survey (tools like Ekahau or even Wi-Fi Analyzer) - Channel interference and congestion - Access point placement and density - Client device capabilities - Band steering (2.4GHz vs 5GHz vs 6GHz) - Firmware updates - Interference sources (microwaves, Bluetooth, neighbouring networks)

Microsoft 365 Questions

MSPs live in M365. These questions are high-probability:

"A user reports they're not receiving external emails. Walk me through your investigation."

Good answer: 1. Check Exchange Online message trace 2. Verify the user's mailbox isn't full 3. Check mail flow rules (transport rules) 4. Check anti-spam/quarantine 5. Verify MX records are correct 6. Check sender's DNS (SPF, DKIM, DMARC) 7. Check if the sender is blocked or in a blocklist

"How do you manageConditional Access policies in Azure AD?"

Cover the basics: conditions (user, location, device, risk), grant controls (MFA, compliant device, app protection), session controls. Mention the balance between security and user experience — MSPs often need to explain trade-offs to clients.

"Explain the difference between Exchange Online mail flow rules and inbox rules."

Mail flow rules (transport rules): server-side, apply to all messages, used for compliance and security. Inbox rules: client-side, per-mailbox, used for organisation. MSPs use mail flow rules for DLP and compliance across tenants.

Active Directory Questions

"How do you troubleshoot Group Policy not applying?"

Should cover: - gpresult /r and gpresult /h for reporting - Check if the computer/user is in the correct OU - Check GPO filtering (security filtering, WMI filtering) - Check if GPO is linked and enabled - Replication issues (dcdiag, repadmin) - Check for conflicting GPOs (order of processing)

"What's the difference between Azure AD and on-prem AD? When would you recommend hybrid vs. cloud-only?"

Hybrid: when you have on-prem servers, legacy apps, need local authentication, or regulatory requirements. Cloud-only: when you're fully cloud, no on-prem dependencies, and want simplified management. Most MSPs are managing hybrid environments for SMBs transitioning to cloud.

Scenario-Based Questions

These are the most important. MSPs want to see your thought process, not just your knowledge.

"A client calls saying their entire office is down. No one can access any systems. What do you do?"

This tests: - Triage skill. Is it a complete outage or partial? - Communication. Do you reassure the client while gathering info? - Methodology. Do you have a systematic approach? - Scope awareness. Can you quickly determine the blast radius?

Strong answer: 1. Acknowledge the urgency, reassure the client you're on it 2. Quick assessment: what exactly isn't working? All users? Specific services? 3. Check fundamentals: internet connectivity, DNS, DHCP, core services 4. Check monitoring tools (RMM) for alerts 5. Isolate the issue: network? servers? authentication? cloud services? 6. Escalate if needed, keep client informed 7. Document the incident and root cause

"You're managing 40 SMB clients. Three clients have P1 incidents simultaneously. How do you prioritise?"

This tests prioritisation and workload management: - Assess impact: which client has the most people affected? - Assess urgency: is data at risk? Is there compliance exposure? - Leverage the team: can someone else handle one while you focus? - Communicate: tell all clients what's happening and expected timelines - Document decisions and rationale

Client Communication Questions

MSPs need technicians who can explain technical issues to non-technical people. This is often the tiebreaker.

"How would you explain ransomware to a business owner who has no technical background?"

Avoid jargon. A good answer: "Ransomware is like a digital hostage situation. Someone sends a malicious email or a website infects your computer, and it locks all your files. The attackers demand money to unlock them. The good news is we can prevent most of this with the right protections, and we have backups to recover if it happens."

"A client is angry because their issue isn't resolved yet. How do you handle it?"

Cover: - Acknowledge their frustration - Explain what you've done and what's next - Give a realistic timeline - Escalate if you can't meet expectations - Follow up after resolution

How to Prepare

Week Before

• Review your own experience — what problems have you solved?
• Research the MSP's tech stack (check their website, job ads, LinkedIn)
• Practice explaining technical concepts out loud (not just in your head)
• Prepare 3-5 "war stories" about complex troubleshooting

Day Of

• Test your setup (camera, mic, internet) if remote
• Have your notes accessible but don't read from them
• Bring a notepad for questions — writing shows engagement
• Prepare questions to ask them (see below)

Questions to Ask the Interviewer

Good questions signal genuine interest and strategic thinking:

• "What does the typical day look like for this role?"
• "What's the client-to-technician ratio?"
• "How does the on-call rotation work?"
• "What's the biggest challenge the team is facing right now?"
• "How do you handle priority conflicts between clients?"

For more on what to look for, see our red flags to watch for in MSPs.

Related Resources

• MSP Interview Questions — Full question bank
• MSP Red Flags — Red flags when evaluating MSPs
• Salary Benchmark 2026 — Know your market value
• Resume Builder — Build a compelling MSP resume
• Best Certifications for MSP Engineers — Boost your credentials