A Linux administrator is configuring a system to make sure that any user attempting to access a certain service should present two different forms of identification. Which of the following authentication methods should the administrator configure?
Tokens
Multifactor authentication (MFA)
System Security Services Daemon (SSSD)
Pluggable authentication modules (PAM)
Multifactor authentication (MFA) requires users to provide two or more verification factors to gain access to a resource such as applications, online accounts, or VPNs, making it significantly more secure than single-factor authentication methods. Tokens and Pluggable Authentication Modules (PAM) are forms of single-factor authentication methods, whereas System Security Services Daemon (SSSD) is an authentication broker but does not inherently indicate a requirement for multiple forms of identification.
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