Top 50 Operating Systems Interview Questions
The most frequently asked Operating Systems questions across all roles and companies, ranked by real interview frequency. Updated daily.
Simulate buffer overflow control-flow hijacking and determine whether ASLR or DEP blocks exploitation.
MicrosoftUse graph traversal to identify process IDs involved in cycles within Windows or Linux parent process relationships.
MicrosoftReturn the foundational security concepts missing from a candidate's study list using set membership and canonical ordering.
MicrosoftUse PostgreSQL CTEs and lateral joins to find text positions containing every required keyword exactly once.
Kpit
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Identify AppArmor and SELinux as Linux Security Modules Docker uses for mandatory access control beyond file permissions.
AppleExplain how sudo vim enables root-level command execution and recommend least-privilege controls to prevent it.
AppleExplain Android Binder IPC, including identity propagation, authorization boundaries, and common privilege-escalation risks.
AppleExplain how ls -l reads directory metadata and how its output reveals Linux ownership, permissions, links, and file type.
MongoDBTests ownership and leadership through ambiguity in a customer-facing technical incident with unclear root cause and high communication stakes.
Motive
Amplify Life Center
Grafana LabsReturn active, non-expired dataset grants while enforcing MFA and role requirements for sensitive data.
Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.
Total Wine & More
Inc.
Benjamin Moore