Ashley Miller — CCNATraining.com

CCNATraining.com publishes exam prep guides, course reviews, and career advice for people studying for Cisco certifications. Our authors are working network engineers who write from real experience, not marketing copy. Whether you’re starting your CCNA or pushing toward CCNP, every article is built to help you understand networking, not just memorize facts.

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Exam Tips

NAT vs PAT: What’s the Difference for the CCNA Exam?

NAT translates one IP address into another. PAT is a specific flavor of NAT that translates many private addresses into

Ashley Miller August 16, 2026

Enterprise & Industry Networking

How Do ACLs Work? Standard vs Extended for the CCNA

An access control list is an ordered list of permit and deny rules that a router or switch checks traffic

Ashley Miller August 16, 2026

Networking Fundamentals

What Is BGP and Why Isn’t It on the CCNA 200-301 Exam?

The first time I saw BGP running in production, I’d been a network admin for three years and didn’t know

Ashley Miller May 22, 2026

IT Career Development

How to Negotiate Your Network Engineer Salary

Learn how to negotiate your network engineer salary with real market data, practical strategies, and mistakes to avoid. Tips from a working network admin.

Ashley Miller May 8, 2026

Network Design

Network Design Tips for New Companies Starting From Scratch

Practical network design tips for new companies. IP planning, VLANs, hardware selection, Wi-Fi, security, and growth planning from a working network admin.

Ashley Miller May 6, 2026

IT Career Development

Network Admin Jobs Over the Next 2 Years: What I’m Seeing from the Trenches

Network admin jobs are evolving fast with cloud, automation, and SD-WAN. Here’s what the market looks like for 2025-2026 from someone working in the field

Ashley Miller May 6, 2026

IT Career Development

DoD 8140 and CCNA: What Network Admins Need to Know About the New Framework

DoD 8140 now recognizes CCNA for networking work roles. Learn how the new framework maps certifications to jobs and what it means for network admins on DoD cont

Ashley Miller May 6, 2026

Exam Tips

OSPF for the CCNA: How It Works, How to Configure It, and How to Stop Failing the Questions

The Routing Protocol That Took Me Three Attempts to Actually Understand I’m going to be upfront about something: OSPF was

Ashley Miller April 23, 2026

Exam Tips

STP Explained: How Spanning Tree Protocol Works for the CCNA

The Lab That Made Me Understand Why STP Exists I was three months into my first network admin job when

Ashley Miller April 23, 2026

Exam Tips

Native VLAN Mismatches: Why This Question Breaks Everyone

Why This One Keeps Catching People Off Guard Native VLAN mismatches have a specific reputation in CCNA study groups: people

Ashley Miller March 16, 2026

IT Career Development

Guide to Cisco’s Most Powerful Networking Tools

Cisco remains one of the most influential names in enterprise networking, offering a comprehensive ecosystem of tools that power networks

Ashley Miller December 4, 2025

Exam Tips

Why CCNA 200-301 Focused on Python and JSON (And Why You Shouldn’t Panic)

If you have been studying for the CCNA 200-301, you have probably muttered this sentence while staring at a block

Ashley Miller December 2, 2025

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NAT vs PAT: What’s the Difference for the CCNA Exam?

How Do ACLs Work? Standard vs Extended for the CCNA

CCNA v2.0 Is Coming in 2027: Should You Test Now or Wait?

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