Câu 11: EX0-105: Information Security Foundation based on ISOIEC 27002

What sort of security does a Public Key Infrastructure (PKI) offer?

1. A. It provides digital certificates which can be used to digitally sign documents. Such signatures irrefutably determine from whom a document was sent.
2. B. Having a PKI shows customers that a web-based business is secure.
3. C. By providing agreements, procedures and an organization structure, a PKI defines which person or which system belongs to which specific public key. — đáp án hiện tại
4. D. A PKI ensures that backups of company data are made on a regular basis.