How-To Guides & Troubleshooting
Step-by-step guides for network configuration, troubleshooting, subnetting, and exam strategy. Written for certification candidates — with the exact commands and concepts tested on CCNA, Network+, Security+, and AWS.
Network Configuration
How to Configure OSPF on Cisco Routers
From basic single-area OSPF to multi-area with passive interfaces — Cisco IOS commands included
How to Configure VLANs on Cisco Switches
Create VLANs, configure access and trunk ports, enable inter-VLAN routing — with IOS commands
How to Configure BGP on Cisco IOS
Master BGP configuration on Cisco IOS with real CLI examples and advanced path attribute tuning.
How to Configure NAT on Cisco Routers (Static, Dynamic, PAT)
Master Cisco NAT configuration with real IOS commands for CCNA success.
How to Configure ACLs on Cisco IOS (Standard and Extended)
Master ACLs on Cisco IOS with real CLI commands for CCNA success.
How to Configure DHCP on a Cisco Router
Configure DHCP on Cisco IOS in 6 minutes — CCNA-ready CLI walkthrough
How to Configure EIGRP on Cisco IOS
Master EIGRP configuration on Cisco IOS with real-world CLI examples
How to Configure an IPsec Site-to-Site VPN on Cisco IOS
Configure a production-ready IPsec VPN tunnel on Cisco IOS step by step.
How to Implement VLANs and 802.1Q Trunking on Cisco Switches
Master VLAN segmentation and trunking with real Cisco IOS commands
How to Configure HSRP and VRRP for Gateway Redundancy
Configure HSRP and VRRP step-by-step with real Cisco IOS commands for gateway redundancy.
Network Troubleshooting
How to Troubleshoot Network Connectivity
OSI-model approach to diagnosing any connectivity problem — from physical to application layer
How to Calculate Subnets by Hand
The magic number method — find any subnet's network, broadcast, and host range in under 60 seconds
How to Troubleshoot DHCP Assignment and Relay Issues
Master DHCP troubleshooting with real Cisco CLI commands and proven diagnostic steps.
How to Troubleshoot OSPF Neighbour Relationships
Master OSPF neighbour troubleshooting with real Cisco IOS commands and proven techniques.
How to Troubleshoot VLAN and Trunking Problems
Master VLAN troubleshooting with real Cisco IOS commands and proven techniques.
Exam Strategy
How to Pass the AWS Cloud Practitioner (CLF-C02)
4-domain breakdown, 4-week study plan, and the exam traps that catch every first-time candidate
How to Pass CompTIA Security+ (SY0-701)
5-domain breakdown, 8-week plan, and how to handle performance-based questions
MCSA Certification: What It Was, Why It's Retired, and What Replaced It
MCSA is retired — here is what Microsoft replaced it with and what to study instead
Is the CCNA Worth It in 2026?
Salary data, job market analysis, and an honest verdict on CCNA ROI in 2026
Best Free CompTIA Study Resources in 2026 (A+, Security+, Network+, and More)
Pass CompTIA for free — the best no-cost study materials ranked by exam
What is PMP Certification? Cost, Requirements, and Whether It's Worth It (2026)
Everything you need to know about PMP before deciding whether to pursue it
What is ITIL? The IT Service Management Framework Explained (2026)
ITIL explained clearly — the framework, the certification, and whether it's worth it
What is ITSM? IT Service Management Explained for 2026
IT Service Management explained — frameworks, tools, certifications, and career paths
How to Pass the AZ-104 Azure Administrator Exam
Master Azure administration with proven exam strategies and hands-on CLI practice.
How to Pass the AZ-900 Azure Fundamentals Exam
Master Azure basics and ace the AZ-900 on your first attempt
How to Pass the AWS Solutions Architect Associate (SAA-C03)
Master the SAA-C03 with real CLI labs, domain breakdowns, and proven study tactics.
How to Pass the CISSP Exam on Your First Attempt
Master the 8 domains and ace the adaptive exam with real CLI and config examples
How to Pass the CKA (Certified Kubernetes Administrator) Exam
Master kubectl, conquer the cluster — your blueprint for CKA success.
How to Pass the RHCSA (EX200) Exam
Master the RHCSA EX200 with hands-on labs, real commands, and proven exam strategies.
How to Pass the CompTIA Network+ (N10-009) Exam
Master the N10-009 exam with proven study tactics and hands-on CLI practice.
How to Pass the CompTIA CySA+ (CS0-003) Exam
Master threat detection and response with proven exam strategies and real CLI tools.
How to Pass the PMP Exam: Study Plan and Strategy
Master the PMP exam with a proven study plan tailored for IT professionals.
How to Pass the CCNP ENCOR (350-401) Exam
Master the CCNP ENCOR exam with proven strategies and real CLI practice.
How to Pass the AWS DevOps Engineer Professional (DOP-C02)
Master CI/CD, automation, and monitoring to ace the DOP-C02 exam.
How to Pass the AZ-305 Azure Solutions Architect Expert Exam
Master Azure architecture design and ace the AZ-305 exam with proven strategies.
How to Pass the Google Associate Cloud Engineer (ACE) Exam
Master the Google Cloud Platform and ace the ACE exam with these proven strategies.
How to Pass the CEH (Certified Ethical Hacker) Exam
Master ethical hacking with real CLI tools and proven exam strategies.
Cloud & Security
Microsoft Applied Skills: What They Are and Are They Worth It?
Hands-on lab credentials that prove you can do the work — not just answer questions about it
Microsoft Fabric Certification (DP-600): The Complete Guide
Everything you need to know about the DP-600 Fabric Analytics Engineer Associate exam
What Is AWS? Amazon Web Services Explained Simply
The complete beginner's guide to AWS — what it is, what it costs, and how to get certified
AWS Free Tier Explained: What You Get, What Expires, and How to Use It for Cert Study
Everything free on AWS — and how to use it to pass your certification without spending a penny
What Is the CISSP Certification? Requirements, Cost and Worth
The gold standard in cybersecurity certification — is it right for you?
What Is the CCNA Certification? Everything You Need to Know
Your complete roadmap to understanding and earning the Cisco CCNA certification.
What Is Kubernetes? A Beginner's Guide for IT Professionals
Master container orchestration with Kubernetes — from pods to production.
What Is Microsoft Azure? Cloud Platform Guide for Beginners
Understand Azure's core services, regions, and management tools in 7 minutes
AWS vs Azure vs Google Cloud: Which Cloud Certification Path?
Compare AWS, Azure, and GCP certifications to choose your ideal cloud career path.
Best IT Certifications in 2026: Highest ROI by Role
Maximize your career growth: top certs by ROI for 2026
What Is Terraform? Infrastructure as Code Explained
Provision cloud infrastructure declaratively with Terraform's IaC approach.
How to Start a Cybersecurity Career: Certifications and Path
From IT pro to security analyst — your certification roadmap starts here.
How to Get Into Cloud Computing: Roadmap for Beginners
Your complete beginner's roadmap to AWS, Azure, and cloud certifications
How to Implement Zero Trust Security Architecture
Deploy Zero Trust with real CLI commands and cloud-native tools
How to Configure a Terraform Remote Backend (S3 + DynamoDB)
Secure your Terraform state with S3 and DynamoDB — essential for team collaboration and exam prep.
How to Configure Kubernetes RBAC: Roles and ClusterRoles
Master Kubernetes RBAC with real kubectl commands and exam-focused examples.
CISSP vs CISM: Which Security Management Cert Is Right for You?
CISSP or CISM? Compare domains, costs, and career impact for security leaders.
How to Configure AWS IAM Roles, Policies and Permissions
Master AWS IAM roles, policies, and permissions with hands-on CLI examples.
Apply what you learn
Read a guide, then test yourself with real exam-style practice questions.