This is known as two-step verification rather than two-factor authentication because even though two questions are asked, the second factor of authentication isn't different from the first.

Two-factor authentication can be a major barrier against accounts being hacked, so why aren't you using it?

Malicious actors are finding ways to get past two-factor authentication. So-called adversary-in-the-middle attacks take advantage of weaker authentication methods to access accounts.

Two-factor authentication was a big step forward for app and device security, but it isn't perfect.

Kurt Knutsson the CyberGuy explains why two-factor authentication will improve security on all your devices, and shows you how to enable it on your devices.

Two-factor authentication adds a second layer of protection to your most important online accounts. We don’t recommend disabling 2FA.

Two-factor authentication is a security process that requires users to provide two distinct authentication factors to access an account. By introducing a second layer of verification in addition ...

Is it true two-factor authentication if 1Password auto-fills security codes for you? Thanks to a 1Password blog post, we now know the answer: No, it’s two-step verification instead.