Answer: Database Administrator.
A Database Administrator is responsible for any design and implementation of a database in a system. They are also the people who make sure that they can secure and manage all the data in their system to avoid any problems that may occur during its usage.
They also are responsible for keeping track of changes and the accessibility of the users that will be inputting data into the database. This most especially applies to databases that are meant to keep client information and transactions for most companies.
System crashes, viruses and fragmented file systems are hallmarks of Windows systems, but your teacher is probably looking for Hard Drive for the answer.
