Multiple choice technology security

What is the Auhentication Protocol used by Facebook\Twitter?

  1. OpenID

  2. OAuth2.0

  3. LiveID

  4. Advanced Encryption Standard

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Facebook and Twitter widely use OAuth 2.0 for API authorization and authentication delegation. OpenID, LiveID, and AES (a symmetric encryption standard) are incorrect.