A technician is about to put a computer back into service that has not been turned on for many months. It was healthy when taken out of service and boots quickly without any problems. Which of the following actions would be a best practice to begin computer maintenance? (Select TWO).

A.
Run a full antivirus scan.

B.
Defragment the hard disk.

C.
Run antivirus updates.

D.
Run Windows updates.

E.
Configure the firewall to access the Internet.