You have bought a Windows Vista Enterprise Edition computer. You want to enable BitLocker
encryption through the Control Panel. In the Startup Preference dialog box, choose the startup
options that can be selected if the computer has a built-in TPM chip.
Answer: 
Explanation:
You can select either the Use BitLocker Without Additional Keysor Require PIN at Every Startup
option to enable BitLocker encryption. The Use BitLocker without additional keys option uses the
TPM to verify the integrity of the operating system at every startup. If you choose this option, the
user will not be prompted during startup. It provides complete transparent protection.
The Require PIN at every startup option also uses TPM to verify the integrity of the operating system
at every startup and requires a user to enter a PIN to verify the user’s identity. This option provides
additional protection, as it also verifies the user.