Final answer:
The 'OnlineInstall' sections of the unattend file are applied exclusively during online installations, used to apply settings to the live operating system, as opposed to the 'OfflineInstall' sections which are utilized when the OS is not running.
Step-by-step explanation:
The sections of the unattend file that are only applied during online installations are marked as OnlineInstall. The unattend file is a configuration file used by Windows Setup to automate the installation process. The sections in this file dictate how different phases of the setup are handled. While OfflineInstall sections are used when the operating system is not running, OnlineInstall sections are used when the operating system is already running, often to apply settings to the live system.
The InternetSettings and NetworkConfiguration sections may contain settings that are related to network and internet configurations, and these settings could be applied during either offline or online configurations depending on the context of the setup being performed.