Learn about the two-factor authentication (2FA) method that enables secure cloud backup of your authentication codes, ensuring you never lose access to your accounts.
Table of Contents
Question
What two-factor authentication method supports the secure backup of your authentication codes in the cloud?
A. Time-based One-time Password (TOTP)
B. Short Message Service (SMS)
C. Security Key
Answer
A. Time-based One-time Password (TOTP)
Explanation
TOTP apps support the secure backup of your authentication codes in the cloud, and can be restored if you lose access to your device.
TOTP is a two-factor authentication method that generates authentication codes based on a shared secret key and the current time. Unlike other 2FA methods, TOTP allows for the secure backup of your authentication codes in the cloud.
When setting up TOTP, you are provided with a set of recovery codes that can be securely stored in the cloud or another safe location. These recovery codes can be used to regain access to your account if you lose access to your primary TOTP device (e.g., your smartphone).
In contrast, Short Message Service (SMS) and Security Key methods do not provide a built-in way to securely back up your authentication codes:
- SMS relies on receiving authentication codes via text message, which cannot be backed up in the cloud.
- Security Keys are physical devices that must be kept secure and cannot be easily backed up.
By choosing TOTP as your two-factor authentication method, you ensure that you can always access your authentication codes, even if you lose your primary device. This makes TOTP a reliable and secure choice for protecting your GitHub account and other online services.
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