Darrell is concerned that users on his network have too many passwords to remember and might write down their passwords, thus creating a significant security risk. Which of the following would be most helpful in mitigating this issue?

Single sign-on (SSO) is designed specifically to address this risk and would be the most helpful. Users have only a single logon to remember; thus, they have no need to write down the password. OAuth (Open Authorization) is an open standard for token-based authentication and authorization on the Internet. It does not eliminate the use or need for multiple passwords. Multifactor authentication helps prevent risks due to lost passwords, but does not remove the need for multiple passwords by itself. Security Assertion Markup Language (SAML) and Lightweight Directory Access Protocol (LDAP) do not stop users from needing to remember multiple passwords.