Learn the most effective method for creating a point-in-time backup of a virtual machine. Understand why snapshots are the optimal solution compared to replication, simulation, and containerization.
Table of Contents
Question
A systems administrator would like to create a point-in-time backup of a virtual machine. Which of the following should the administrator use?
A. Replication
B. Simulation
C. Snapshot
D. Containerization
Answer
C. Snapshot
Explanation
To create a point-in-time backup of a virtual machine, the best option is to use a snapshot (Choice C).
A snapshot captures the exact state of a virtual machine at a specific point in time, including the operating system, applications, and data. It saves this state so the VM can be quickly reverted back to that snapshot later if needed. Snapshots are stored efficiently and don’t take up as much storage space as a full backup.
Snapshots allow you to preserve a known good configuration before making system changes. If something goes wrong, you can easily roll the VM back to the pre-change state using the snapshot. They also enable quick backup and recovery of VMs.
The other options are not as suitable:
- Replication (A) creates an ongoing copy of data but doesn’t preserve a point-in-time state to revert back to.
- Simulation (B) models a system but doesn’t backup or save the actual state.
- Containerization (D) is a way to package and deploy applications, not backup virtual machines.
Therefore, using a snapshot (C) is the best way for a systems administrator to capture and save the state of a VM at a particular moment for backup and recovery purposes.
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