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Answer: (A) full backup
Explanation: A backup strategy is a term used to describe the various effective approach engaged in creating a backup for data or information.
A FULL BACK UP IS THE VARIOUS APPROACH AND SYSTEMS PUT IN PLACE BY A COMPUTER USER OR AN INFORMATION TECHNOLOGY EXPERT IN ORDER TO CREATE AN ADDITIONAL SAMPLE OR COPY OF AN INFORMATION OR A DATA IN S SINGLE BACKUP.
It is known as the firewall software. A firewall is a program or gadget that goes about as a boundary to keep ruinous components out of a system or particular PC. Firewalls are arranged with particular criteria to square or forestall unapproved access to a system.
