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The One 23 Group Interview Questions

The questions to prepare for The One 23 Group interviews, across all roles. Questions from real interview reports rank first. Updated daily.

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1
Technical FundamentalsStart here. 6 questions · ~48 min
Online LVM and Filesystem ResizeMedium

Tests advanced Linux storage management and safe online resizing procedures.

technical knowledgeThe One 23 Group
Diagnosing High Load with Low CPUMedium

Tests performance troubleshooting skills and ability to reason about load metrics and bottlenecks.

Troubleshootingtechnical knowledgeThe One 23 Group
Red Hat Boot ProcessMedium

Tests foundational Linux boot knowledge and systemd target understanding.

technical knowledgeThe One 23 Group
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2
Security & Infrastructure3 questions · ~24 min
SSH Key and Credential RotationMedium

Tests identity hygiene, secrets management practices, and operational controls at scale.

SecurityThe One 23 Group
Least Privilege in Active DirectoryMedium

Tests access control design, delegation practices, and governance for privileged operations.

least privilegeaccess controlactive directoryThe One 23 Group
BSOD Troubleshooting on Windows ServerMedium

Tests structured incident troubleshooting and prioritization for critical Windows Server environments.

production failuretechnical knowledgeThe One 23 Group

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3
Behavioral & Leadership9 questions · ~72 min
Owning a Critical Production OutageHard

Tests ownership during a high-severity outage, including root-cause isolation, incident communication, and preventive follow-through.

root causeincident responseTroubleshootingThe One 23 Group
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4
More topics1 question · ~8 min
GPO Security Baselines Without Login LagHard

Tests GPO design tradeoffs, performance awareness, and secure policy enforcement at scale.

solution designThe One 23 Group
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