Just got laid off. Off setting skill atrophy and preparing for interviews.

So after 4 years at my company I just received notification today that I got laid off.

I'm not too worried about my prospects but it's been quite some time since I've interviewed for a network role. My certifications have also expired.

Do I bother with renewing my certs if I have 6+ years of experience as an Engineer? Does anyone still care at that point?

Also does anyone happen to have a good list of potential interview questions? I like to give myself mock interviews to get in the right mindset.

Thanks for letting me vent a bit!