Which of the following is the most secure method of authentication? (ISC)2 CISSP-ISSAP Exam

The correct answer is D. Biometrics. Biometrics represents the most secure authentication method because it verifies who you are using inherent physical or behavioral traits (fingerprints, retina patterns, voice) that are unique, non-transferable, and cannot be forgotten or easily replicated. Smart card (A) is a "so

Identity and Access Management (IAM) Architecture

Question

Options

ASmart card
BAnonymous
CUsername and password
DBiometrics

How the community answered

(29 responses)

B
3% (1)
C
3% (1)
D
93% (27)

Explanation

Biometrics represents the most secure authentication method because it verifies who you are using inherent physical or behavioral traits (fingerprints, retina patterns, voice) that are unique, non-transferable, and cannot be forgotten or easily replicated.

Smart card (A) is a "something you have" factor - it can be lost, stolen, or cloned, introducing physical security risks biometrics don't share.
Anonymous (B) provides zero authentication - no identity is verified at all, making it the least secure option on this list.
Username/password (C) is a "something you know" factor - vulnerable to phishing, brute force, credential stuffing, and reuse attacks.

Memory tip: Use the authentication factor hierarchy - Are > Have > Know > Nothing. Biometrics = what you are, which is hardest to steal or fake. When the exam asks "most secure single factor," always favor are over have over know.

Topics

#Biometrics#Authentication Methods#Security Controls#Access Control

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