Which task would you perform before you run Oracle Universal Installer (OUI) in silent or suppressed mode for an installation?

root.sh is executed after OUI completes installation to configure OS-level kernel parameters and set SUID bits; it is a post-installation step, not a prerequisite.

In silent or suppressed mode, OUI cannot prompt the user for the Oracle Inventory location, so it reads the oraInst.loc file to find that path. Without this file pre-created, OUI has no way to determine where to register the installation metadata, causing the silent install to fail. Creating oraInst.loc with the correct inventory_loc and inst_group entries is therefore a prerequisite step.

tnsnames.ora is a network service name configuration file used by Oracle clients after the database is installed and running; it is not required before or during OUI execution.

oraInstRoot.sh is also a post-installation script run as root to update the Central Inventory with correct ownership; it runs after OUI finishes, not before.