EX342

Red Hat Certified Specialist in Linux Diagnostics and Troubleshooting Guide

 

Overview:

This Exam is all about being able to find and fix faults on RHEL7(.5)

This page lists some of the posts I have written to understand the objectives required.

 

Exam Prediction:

My predictions for what is on the exam are here

 

Top Posts:

Below are my top posts whilst studying for the EX342 Troubleshooting Exam:

 

Exam Objectives:

  • Understand and employ general methods for troubleshooting
  • Diagnose and troubleshoot system start up issues
    • Identify and resolve service failures affecting boot
    • Regain root control of a system
    • Troubleshoot boot issues
    • Identify hardware and hardware problems
    • Manage kernel modules and their parameters
  • Diagnose and troubleshoot file system issues
    • Recover corrupted file systems
    • Recover mis-configured or broken LVM configurations
    • Recover data from encrypted file systems
    • Identify and fix iSCSI issues
  • Resolve package management issues
  • Troubleshoot and fix network connectivity issues
    • Use standard tools to verify network connectivity
    • Identify and fix network connectivity issues
    • Inspect network traffic to aid troubleshooting
  • Diagnose application issues
    • Identify library dependencies for third-party software
    • Identify if an application suffers from memory leaks
    • Use standard tools to debug an application
    • Identify and fix issues related to SELinux
  • Identify and fix authentication issues
  • Gather information to aid third party investigation of issues
    • Create kernel crashdumps
    • Compile and execute SystemTap modules