This CISSP practice question tests your understanding of identity and access management. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company requires employees to authenticate using a smart card and PIN to access the corporate network. This is an example of which type of authentication?
Single-factor authentication
Why wrong: Only one factor is used, not matching the smart card and PIN.
Biometric authentication
Why wrong: Biometrics use something you are, not applicable here.
Two-factor authentication
Correct – smart card (something you have) and PIN (something you know) are two distinct factors.
Single sign-on
Why wrong: SSO allows access to multiple systems after one authentication, but does not define factor type.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Two-factor authentication
This scenario requires two distinct authentication factors: something you have (the smart card) and something you know (the PIN). Smart cards store a private key or certificate that must be unlocked by the PIN, and both factors must be presented simultaneously to authenticate. This meets the NIST SP 800-63 definition of multi-factor authentication, specifically two-factor authentication.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Single-factor authentication
Why it's wrong here
Only one factor is used, not matching the smart card and PIN.
Biometric authentication
Why it's wrong here
Biometrics use something you are, not applicable here.
Two-factor authentication
Why this is correct
Correct – smart card (something you have) and PIN (something you know) are two distinct factors.
Related concept
Read the scenario before looking for a memorised answer.
Single sign-on
Why it's wrong here
SSO allows access to multiple systems after one authentication, but does not define factor type.
Common exam traps
The trap here is that candidates may mistakenly think a smart card alone is a single factor, forgetting that the PIN is a separate knowledge factor, or they may confuse two-factor authentication with SSO because both can involve a single login event.
Detailed technical explanation
Under the hood, the smart card contains a cryptographic key pair; the PIN decrypts the private key stored on the card, enabling it to sign a challenge from the authentication server (e.g., using PKCS#11 or PIV standards). In real-world deployments, if the PIN is captured via a keylogger, the smart card alone is useless without the PIN, and vice versa, ensuring true factor independence. The authentication protocol often uses EAP-TLS or similar, where the smart card provides the client certificate and the PIN unlocks the private key for the TLS handshake.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A developer is choosing between AES-256 (symmetric) and RSA-2048 (asymmetric) for encrypting a large file that will be sent to a partner. Symmetric encryption is fast but requires key exchange; asymmetric is slower but solves the key distribution problem. A hybrid approach — encrypt the file with AES, encrypt the AES key with RSA — is standard. Questions like this test whether you understand when each approach applies.
What to study next
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FAQ
Identity and Access Management — This question tests Identity and Access Management — Read the scenario before looking for a memorised answer..
The correct answer is: Two-factor authentication — This scenario requires two distinct authentication factors: something you have (the smart card) and something you know (the PIN). Smart cards store a private key or certificate that must be unlocked by the PIN, and both factors must be presented simultaneously to authenticate. This meets the NIST SP 800-63 definition of multi-factor authentication, specifically two-factor authentication.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This CISSP practice question is part of Courseiva's free ISC2 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CISSP exam.
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