Which of the following root keys stores information about registered applications?

A.
HKEY_USERS

B.
HKEY_CLASSES_ROOT

C.
HKEY_CURRENT_CONFIG

D.
HKEY_CURRENT_USER

Explanation:

The HKEY_CLASSES_ROOT root key stores information about registered applications such as file
association data that tells which default program opens files with a certain extension.

currently logged-in user. When a user logs off, the HKEY-CURRENT-USER is saved to HKEY-USERS.

Answer A is incorrect. The HKEY_USERS root key contains subkeys corresponding to the
HKEY_CURRENT_USER keys for each user profile actively loaded on the machine.

Answer C is incorrect. The HKEY_CURRENT_CONFIG root key contains information gathered at run
time.