Systems Administrator interview questions (2026)

Sysadmin interviews test OS & servers, troubleshooting, automation, and security. Then practice them in a free AI mock interview tailored to your exact role.

OS & servers

• How do you investigate a server running out of memory or disk?
• Walk me through setting up a new server securely.
• How do you manage user accounts and permissions at scale?

Troubleshooting & ops

• A critical service is down — walk me through your first 10 minutes.
• How do you handle backups and test that they actually restore?
• How do you keep systems patched without breaking things?

Automation & security

• What have you automated to save yourself repetitive work?
• How do you harden a server against attacks?
• How do you monitor systems and decide what to alert on?