What is referred to as a condition where all settings from previous sessions are retained upon logging on?

The concept referred to when all settings from previous sessions are retained upon logging on is known as "stateful." In a stateful environment, a system maintains the state of a user's session, meaning it remembers previous activities and settings. This allows for a smoother user experience, as preferences and configurations do not need to be set up again with each new session.

In contrast, a stateless environment does not retain such information, treating each session as independent with no memory of prior interactions. Dynamic and fixed refer to different attributes; dynamic usually implies changeability or adaptability, while fixed suggests permanence or stability. Neither directly relates to the concept of retaining session settings. Therefore, the designation of stateful is the accurate and contextual term describing the retention of session settings across logins.