A number used with authentication devices such as smart cards; the PIN should be known only to the user, loss of the smart card should not present a security risk.

A number used with authentication devices such as smart cards; the PIN should be known only to the user, loss of the smart card should not present a security risk.

• A. password manager
• B. account policies
• C. personal identification number (PIN)
• D. multifactor authentication

Answer: (C)

A PIN is a secret number that serves as a knowledge factor used with a physical token like a smart card. The card provides the possession factor, and the PIN ensures you must know something to use the card. Because the PIN is known only to the user, losing the card doesn’t automatically grant access—the attacker would still need the PIN to operate the card. This is why the PIN fits the scenario best: it’s the private number that accompanies the smart card to authenticate the user. A password manager isn’t the secret used with a card; it stores credentials. Account policies describe rules and controls, not a personal secret used for authentication. Multifactor authentication is the overall approach of requiring multiple factors, but the scenario specifically describes the secret number that unlocks the card.

A PIN is a secret number that serves as a knowledge factor used with a physical token like a smart card. The card provides the possession factor, and the PIN ensures you must know something to use the card. Because the PIN is known only to the user, losing the card doesn’t automatically grant access—the attacker would still need the PIN to operate the card. This is why the PIN fits the scenario best: it’s the private number that accompanies the smart card to authenticate the user.

A password manager isn’t the secret used with a card; it stores credentials. Account policies describe rules and controls, not a personal secret used for authentication. Multifactor authentication is the overall approach of requiring multiple factors, but the scenario specifically describes the secret number that unlocks the card.