COMPUTER NETWORKS AND COMMUNICATIONS
NETWORK SECURITY AND CYBERSECURITY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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cloud
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external hard drive
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123 backup plan
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321 backup rule
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Detailed explanation-1: -Three data copies. Three copies of all critical data should be made on a regular basis–daily or more frequently–including the original data and at least two backups. Two types of storage. One off-site location.
Detailed explanation-2: -The 3-2-1 backup strategy simply states that you should have 3 copies of your data (your production data and 2 backup copies) on two different media (disk and tape) with one copy off-site for disaster recovery.
Detailed explanation-3: -The 3-2-1 Rule, as I like to explain it, states the following: There should be 3 copies of data. On 2 different media. With 1 copy being off-site.
Detailed explanation-4: -Here’s how the 3-2-2 rule breaks down: Keep 3 copies of your data. Store 2 backup copies locally but on different devices. Store 2 copies offsite (1 copy in a remote location + 1 copy to the cloud)
Detailed explanation-5: -According to the 3-2-1 backup rule, you should keep at least two backup copies to protect your data against natural disasters, accidental deletions, hardware failure and cyberattacks.