Which technique provides MFA without sending codes over SMS?
A CISSP practice question covering Domain 5: Identity and Access Management (IAM). Try answering before reading the explanation below.
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Why "TOTP via authenticator app or hardware key (FIDO2/WebAuthn)" is the right answer
TOTP and FIDO2/WebAuthn keys avoid SIM-swap risk. SMS is no longer recommended for high-value accounts. Email links are weaker than TOTP. Knowledge-based questions are widely regarded as ineffective.
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