notes update && created mock practice exam

src/practice-scenarios/README.md

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+# RHCSA Practice Scenarios
+
+This directory contains various practice scenarios and a mock exam to help prepare for the Red Hat Certified System Administrator (RHCSA) exam.
+
+## Available Practice Materials
+
+- **Practice Scenarios v1-v5**: Incremental practice scenarios covering individual RHCSA objectives
+- **Mock RHCSA Exam**: A comprehensive mock exam that simulates the actual RHCSA exam environment and tasks
+
+## How to Use These Materials
+
+1. Start with the practice scenarios to build specific skills
+2. Once comfortable with individual components, attempt the mock exam
+3. Time yourself to simulate exam conditions (2.5 hours)
+4. Review and practice areas where you struggled
+
+## Key Focus Areas
+
+- User and group management
+- Storage configuration (partitions, LVM, STRATIS)
+- Service management and automation
+- Network configuration
+- Security (firewall, SELinux)
+- Container management
+
+Remember that the actual RHCSA exam is performance-based, so hands-on practice in a lab environment is essential for success.