Skip to main content
📖 Study Guides

Cloud Developer & DevOps

LFCS Exam Traps: Storage, systemd & Networking Gotchas
Linux Foundation EN

LFCS Exam Traps: Storage, systemd & Networking Gotchas

Avoid the most common LFCS exam mistakes. Learn why XFS can't shrink, when systemctl enable isn't enough, and …

· 9 min
LFCS Deep Dive: Linux Storage Management, Networking & Service Configuration
Linux Foundation EN

LFCS Deep Dive: Linux Storage Management, Networking & Service Configuration

Master the hardest LFCS topics: LVM workflow, partition management, systemd service units, network configuration with nmcli, firewall rules, …

· 9 min
How to Pass the Linux Foundation LFCS in 2026: Complete Study Guide
Linux Foundation EN

How to Pass the Linux Foundation LFCS in 2026: Complete Study Guide

Complete LFCS study guide for 2026. Covers all exam domains, the performance-based format ($395, 2 hours), and a …

· 7 min
FOCP Exam Traps: FinOps Phases, Cost Allocation & Optimization Gotchas
Linux Foundation EN

FOCP Exam Traps: FinOps Phases, Cost Allocation & Optimization Gotchas

Avoid common FOCP exam mistakes. Learn why Inform comes before Optimize, when savings plans beat reserved instances, and …

· 8 min
How to Pass the FinOps Certified Practitioner (FOCP) in 2026: Study Guide
Linux Foundation EN

How to Pass the FinOps Certified Practitioner (FOCP) in 2026: Study Guide

Complete FOCP study guide for 2026. Covers all FinOps phases, the exam format ($250, 50 questions, 90 min), …

· 6 min
How to Pass Red Hat RHCSA (EX200) in 2026: Complete Study Guide
Red Hat EN

How to Pass Red Hat RHCSA (EX200) in 2026: Complete Study Guide

Complete study guide for the Red Hat RHCSA EX200 exam. Covers essential tools, storage/LVM, services/boot process, SELinux, networking, …

· 8 min
Vault Professional Exam Traps: HA, Replication & Enterprise Access Control
HashiCorp EN

Vault Professional Exam Traps: HA, Replication & Enterprise Access Control

Avoid the hardest Vault Professional exam traps around HA topology, replication modes, HSM seal types, and enterprise access …

· 11 min
Vault Professional Deep Dive: HA Deployment, HSM Integration & Performance Replication
HashiCorp EN

Vault Professional Deep Dive: HA Deployment, HSM Integration & Performance Replication

Master advanced Vault Professional topics: Integrated Storage Raft HA, HSM auto-unseal, performance replication vs DR replication, and Vault …

· 11 min
How to Pass HashiCorp Vault Operations Professional in 2026: Study Guide
HashiCorp EN

How to Pass HashiCorp Vault Operations Professional in 2026: Study Guide

Complete study guide for the HashiCorp Vault Operations Professional exam. Covers all 8 advanced domains: HA deployment, HSM …

· 8 min
Vault Associate 003 Exam Traps: Auth Methods, Policies & Token Gotchas
HashiCorp EN

Vault Associate 003 Exam Traps: Auth Methods, Policies & Token Gotchas

Avoid the most common Vault Associate 003 exam mistakes. Master auth method selection, policy path syntax, token types, …

· 13 min