Quick answer: EX342 is a 4-hour, single-section, 100% performance-based Red Hat exam that tests your ability to diagnose and resolve performance and system issues on Red Hat Enterprise Linux. Passing it earns the Red Hat Certified Specialist in Linux Diagnostics and Troubleshooting credential (also branded Red Hat Certified Advanced System Administrator in Enterprise Linux) and counts toward RHCA. TroyTec's EX342 practice exams cover system analysis, log forensics, performance tuning, and troubleshooting scenarios — in PDF, Online Test Engine, and AI-assisted formats.
EX342 tests a candidate's ability to analyze Red Hat Enterprise Linux systems for issues that cause degraded performance or system failures, and either resolve those issues directly or gather forensic information for escalation to a third party. Like other Red Hat certification exams, EX342 is entirely performance-based: you work on live systems and are evaluated on whether your diagnosis and remediation actually work, not on multiple-choice answers.
Red Hat publishes this credential under two names depending on context: Red Hat Certified Specialist in Linux Diagnostics and Troubleshooting (the exam name) and Red Hat Certified Advanced System Administrator in Enterprise Linux (the credential earned). Both refer to the same EX342 exam.
Exam Code: EX342 (also listed as EX342K / EX342V84K depending on RHEL version)
Full Title: Red Hat Certified Specialist in Linux Diagnostics and Troubleshooting exam
Credential Earned: Red Hat Certified Advanced System Administrator in Enterprise Linux
Format: Performance-based, single section, no multiple choice
Duration: 4 hours
Based On: Red Hat Enterprise Linux 8.4 (current published version; confirm latest RHEL base on Red Hat's site before booking)
Delivery: Red Hat Individual Exam (RHIE), remote or testing center
Prerequisite: None mandatory; Red Hat Certified System Administrator (RHCSA, EX200) is the expected skill baseline
Recommended Prep Course: RH342 (Red Hat Enterprise Linux Diagnostics and Troubleshooting) — recommended, not required
Counts Toward: Red Hat Certified Architect (RHCA)
Red Hat periodically updates EX342 objectives to track the current RHEL version. Based on the most recently published objectives, candidates should be able to:
Analyze and troubleshoot system performance issues, including CPU, memory, disk I/O, and network bottlenecks
Diagnose boot failures and repair systems that fail to start correctly
Analyze system logs and use logging tools to identify the root cause of failures
Troubleshoot storage issues, including LVM, filesystem corruption, and disk space exhaustion
Diagnose and resolve networking issues affecting system or service availability
Troubleshoot application and service failures using systemd and related tooling
Gather forensic information about a system issue for escalation when a fix isn't required or possible during the exam
Use Red Hat diagnostic and monitoring tools to identify degraded system states
Work under time pressure to prioritize and resolve multiple simultaneous issues across one or more systems
System administrators managing production Red Hat Enterprise Linux environments
RHCSA holders looking to advance toward RHCE or RHCA
Administrators who want to formally validate problem-solving and root-cause analysis skills
Engineers responsible for incident response and system troubleshooting on RHEL infrastructure
EX200 – Red Hat Certified System Administrator (RHCSA) (expected skill baseline)
EX342 – Red Hat Certified Specialist in Linux Diagnostics and Troubleshooting (this exam)
EX280 – Red Hat Certified Specialist in OpenShift Administration
EX288 – Red Hat Certified Specialist in OpenShift Application Development
No. EX342 is the Red Hat Certified Specialist in Linux Diagnostics and Troubleshooting exam, an RHCA-track exam focused on advanced troubleshooting. RHCSA is a separate, earlier-level exam with the code EX200.
EX342 is a single section lasting 4 hours.
You earn the Red Hat Certified Advanced System Administrator in Enterprise Linux credential, which also counts toward Red Hat Certified Architect (RHCA).
No. The RH342 course is recommended but not required. Real-world troubleshooting experience and practice are equally important for passing.
Red Hat expects RHCSA-level (EX200) skills as a baseline before attempting EX342.
Using leaked real exam content violates Red Hat's certification agreement and can result in disqualification or a permanent ban. TroyTec's practice materials are built from published exam objectives, not leaked content.
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Everything you need to know about the Red Hat Certified Specialist in Linux Diagnostics and Troubleshooting certification
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Updated July 23, 2026
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