RedHat EX442 Exam Information and Actual Questions

RedHat EX442 Exam Overview:

Certification Vendor:	Red Hat
Exam Name:	Red Hat Certified Specialist in Linux Performance Tuning Exam
Exam Number:	EX442
Related Certifications:	Red Hat Certified Specialist in Performance Tuning Red Hat Certified Architect (RHCA)
Exam Duration:	240 minutes
Real Exam Qty:	Performance-based practical exam (no fixed question count)
Available Languages:	English
Exam Format:	Hands-on lab exam, Performance-based practical tasks
Exam Price:	Varies by region
Certificate Validity Period:	3 years
Passing Score:	Not publicly disclosed by Red Hat
Exam Way:	Performance-based practical exam delivered at a Red Hat testing center, partner location, or eligible remote testing environment depending on regional availability.
Pre Condition:	Red Hat recommends RHCSA certification or equivalent experience. RH442 Red Hat Enterprise Linux Performance Tuning course or extensive performance tuning experience is strongly recommended.
Official Syllabus URL:	https://www.redhat.com/en/services/training/ex442-exame-do-red-hat-certified-specialist-linux-performance-tuning

RedHat EX442 Exam Syllabus Topics:

Section	Objectives
Monitor and Alter Kernel Behavior	- Manage kernel runtime parameters 1. Use /sys 2. Use sysctl 3. Use /proc/sys - Configure kernel modules 1. Modify kernel module parameters
Tune Memory Utilization	- Optimize memory performance 1. Adjust memory-related settings - Analyze memory usage 1. Identify memory bottlenecks
Analyze System and Application Performance	- Analyze processes and applications 1. Use Valgrind 2. Use ps and top - Evaluate application performance 1. Compare application implementations based on performance characteristics - Trace and diagnose behavior 1. Use eBPF tools 2. Configure and use SystemTap
Tune Running Systems	- Manage process scheduling 1. Modify process priorities - Apply tuning profiles 1. Configure and manage tuned profiles - Control resource usage 1. Manage control groups (cgroups)
Configure Disk and File Subsystems	- Analyze storage performance 1. Evaluate disk I/O behavior - Tune storage subsystems 1. Optimize file system and storage performance
Tune Network Performance	- Analyze network behavior 1. Measure network throughput and latency - Optimize network settings 1. Tune network stack and configuration parameters
Use Utilities to Analyze System Behavior	- Profile hardware configurations 1. Use sosreport 2. Use dmidecode 3. Use dmesg - Use Performance Co-Pilot 1. Analyze system behavior with PCP - Analyze and report system and application behavior 1. Use vmstat, iostat, mpstat, sar, top, powertop, gnome-system-monitor and similar tools 2. Collect and interpret performance metrics