A city VPN admin team must approve a phone prompt in addition to entering a password before connecting to municipal systems. Which authentication concept does that requirement describe?
Select an answer to reveal the explanation.
Short Explanation
Think of MFA like needing both a keycard and a PIN to open the server room door. A password alone is one factor; the phone approve adds another. That combo is what MFA is for.
Full Explanation
Multifactor authentication requires more than one independent proof of identity—typically something you know plus something you have or are. Requiring a password and a phone approval for VPN admins is a classic MFA pattern at Azure Fundamentals depth. SSO addresses convenience across apps, not stronger per-sign-in proof, and public storage or Arc do not replace MFA.