RE: CISSP Question

Just a quick add, don't overthink the 4 years' experience requirement. You need that experience in any one (or more) of the 10 domains. Honestly, if you're a desktop support jockey for 4 years and you do some sort of security as part of your work (do you manage passwords and/or respond to spyware incidents?), you can still qualify. Realistically, anyone with 4 years' experience in IT.