A Chief Executive Officer (CEO) wants to have the ability to log on to all applications upon arrival at the office. The CEO would like to have the ability to provide credentials only once. Which of th

Single Sign-On (SSO) allows a user to authenticate once with a single set of credentials and then gain access to multiple independent software systems or applications without needing to re-authenticate for each one. This directly fulfills the requirement of providing credentials only once for all applications.

A software token is typically used as a second factor in authentication, requiring an additional input beyond a primary credential, which doesn't align with the 'provide credentials only once' requirement across multiple apps.

A PIN (Personal Identification Number) is a single credential and doesn't inherently provide access to multiple disparate applications with a single entry unless it's part of an SSO system.

Multifactor authentication (MFA) requires two or more distinct factors for verification, which explicitly contradicts the 'provide credentials only once' requirement as it demands multiple authentication inputs.