Which of the following statements is NOT TRUE?

Question $6$ options:

Certificate Authorities $($CAs$)$ manage digital certificates

The digital certificate has its own digital signature encrypted by the CA$$s public key

The verifier accepts the digital certificate if decryption can be done using CA$$s public key

A firm can act as its own CA $$ have control of trust in its entire PKI

Question $7(2$ points$)$

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The following are typical authentication methods used for access control EXCEPT FOR

Question $7$ options:

Assigning appropriate file permissions to individual users

Biometrics

Passwords

Cryptography authentication

Question $8(2$ points$)$

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Below are benefits of using Role$-$Based access control EXCEPT FOR:

Question $8$ options:

It increases the number of opportunities of errors in assigning access to resources

Access$-$control rules created based on roles is cheaper than assigning access control rules separately to individual user accounts

User groups can be created to cut down on individualizing each user within the firm

Easier to move users from one group to another for promotions or changes of roles