CompTIA Cloud+ Practice Test

What is the easiest way for a systems administrator to ensure a quick rollback before making changes to a VM?

1. Create a snapshot on the hypervisor.

2. Make an on-demand, incremental backup to a VTL.

3. Make an on-demand, full backup to a secondary location.

4. Create a snapshot on a remote storage array.

The correct answer is: Create a snapshot on the hypervisor.

Creating a snapshot on the hypervisor is the most effective method for a systems administrator to ensure a quick rollback before implementing changes to a virtual machine (VM). A snapshot captures the current state, including the VM's operating system, applications, and data, at a specific point in time. This allows the administrator to easily revert the VM back to that precise state if the changes lead to issues or unwanted outcomes, facilitating rapid recovery without extensive downtime. This method is particularly beneficial because snapshots are designed for quick recovery, enabling administrators to roll back changes with minimal disruption to services. The hypervisor's functionality typically provides tools to manage these snapshots efficiently, ensuring a streamlined recovery process. In contrast, making an on-demand, incremental backup to a Virtual Tape Library (VTL) or a full backup to a secondary location involves more steps and can take longer to perform and restore. These methods might require additional time for storage and management, which could delay recovery. Creating a snapshot on a remote storage array might introduce latency or dependency on network conditions, potentially complicating the rollback process if the communication between the hypervisor and the remote storage is disrupted. Therefore, the swift and effective nature of hypervisor snapshots makes them the best choice for quick rollbacks before making changes to a