Question
i) Public-Key Certificates
ii) Public announcements
iii) Publicly available directories
iv) Public-Key authority
a.
i) and ii)
b.
iii) and iv)
c.
i) and iv)
d.
iv) only
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Q. Which systems use a timestamp? i) Public-Key Certificates ii) Public announcements iii) Publicly available directories iv) Public-Key authority
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