Which of the following backup types only records changes to the data blocks on a virtual machine?
A . Differential
B . Snapshot
C . Incremental
D . Synthetic full
Answer: B
Explanation:
The backup type that only records changes to the data blocks on a virtual machine is snapshot. A snapshot is a point-in-time copy of a virtual machine (VM) that captures the state and data of the VM at a specific moment. A snapshot can be created instantly and with minimal overhead, as it only stores the changes made to the VM after the snapshot was taken. A snapshot can be used to restore the VM to its previous state in case of data loss or corruption.
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