Cisco Devnet has tons of free resources now, I was just using CML2 to build and test typologies. I would be cautious looking at old Cisco content if you do plan to get CCNA/NP/IE level certs since the whole curriculums changed in Feb2020.<p>Regardless thank you for sharing these links the Fortinet one looks intriguing, esp being on furlough I got enough time on hand.
On a tangential topic, do respectable online certifications for product management exist?<p>Plenty of Udemy courses and the like, but nothing I've found with certification.<p>Is certification generally reserved for specific technical skills like networking, security, cloud infrastructure, etc.?
The only point of certification is signaling. Right now there is only 1 (Ga Tech's OMSCS) online program that would be a positive signal. On the other hand, including an online certification in most resumes would probably be a negative signal, especially an unknown one.