There is a strong chance that you will be tested on the terms "MTD, RPO, RTO, WRT"- tested on their concepts, not just their definitions.
This is one of those topics where it's either you know it, or you don't.
The terms can be confusing when you just start out studying, but eventually after weeks or months of reading and watching videos, it all starts to make sense.
Here's a breakdown of the steps:
Step 1 - Normal business operations, proper data backups
Step 2 - After disaster strikes, initiate system recovery procedures
Step 3 - Recover all systems
Step 4 - Restore backups and test system
Step 5 - Resume normal business operations, proper data backups
Another link related to disaster recovery:
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