Please give Right Answer of my question.

According to NIST guidance, passwords should NOT be ___________.

A.memorable

B.randomly generated

C.complex

D.long

Which of these strategies describes an architecture for large systems offering a unified approach to authentication wherein user credentials are centrally gathered or managed and sent to authenticating applications?

A.single Sign-on

B.Personal Identity Verification

C.Internet of things

D.Federated Identity Management

"Asserting who a person is" is an act of what?

A.Authentication

B.Identification

C.Defiance

D.Access Control

Which of these is a method for restricting password file availability?

A.Encryptoin

B.Stretching

C.Shadow Password file

D.Audit

What is the total number of 10 character, case sensitive, alphabetic (no numbers or special symbols) passwords?

A.100^26

B.52^10

C.26^10

D.10^52