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ISC2 Systems Security Certified Practitioner (SSCP) Practice Question

Your organization is enabling multifactor authentication for field engineers who access an internal support portal from customer sites. The second factor must satisfy these constraints: it has to generate a unique code for every login, work even when no cellular or Wi-Fi service is available, incur minimal ongoing cost by using devices engineers already carry, and avoid the need for dedicated smart-card readers. Which MFA method best meets these requirements?

  • Send one-time passcodes via SMS to the engineers' registered mobile phone numbers.

  • Deploy a time-based one-time password (TOTP) software token delivered through a smartphone authenticator app.

  • Issue hardware smart cards containing X.509 certificates and require engineers to authenticate with a card reader.

  • Email a single-use authentication link to engineers each time they log in.

ISC2 Systems Security Certified Practitioner (SSCP)
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