CCNA Resources
CCNA articles
What is subnetting? A CCNA beginner’s guide
Learn what subnetting is, how subnet masks and CIDR work, and how to find network, broadcast, and host addresses, with a worked CCNA example.
IT certification roadmap: Paths by career track
An IT certification roadmap by career track: entry, associate, and advanced certifications for IT support, networking, security, and cloud.
CCNA vs. Network+: Which should you take first?
CCNA vs. Network+: compare the exams, costs, difficulty, and jobs, and find out which networking certification to take first.
Cisco certification path: From CCST to CCIE
Map the Cisco certification path from CCST to CCNA, CCNP, and CCIE: what each level requires, who it suits, and how the tracks line up.
Does the CCNA expire? How to renew your CCNA
The CCNA expires after three years. Here’s how to renew it: pass the current exam or a higher-level one, or earn 30 Cisco CE credits.
Is the CCNA worth it in 2027?
Is the CCNA worth it? What the $300 exam costs in money and time, what it can return, and how to make it pay off in 2027.