You are right.I raised this question because some years ago, there are Juniper voucher based online paper. One of my friend told me I cleared this exam and after that I gave paper on behalf of my all roommates, and in last his cook also cleared the Juniper free voucher base online Exam.When I passed my exam, my friend said I also need this certificate so you give paper on behalf of me.
I am working on Solarwinds Since last 2 years.That's why I suggest the paper must have some type of security.