CV0-003 Question #200: Real Exam Question with Answer & Explanation

The correct answer is B: Differential backups. Differential backups capture all data that has changed since the last full backup. In this scenario, new files are created only once per month, meaning the vast majority of daily backup activity involves small modifications to already-existing large files. A differential backup w

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Question

A company is seeking a new backup solution for its virtualized file servers that fits the following characteristics: The files stored on the servers are extremely large. Existing files receive multiple small changes per day. New files are only created once per month. All backups are being sent to a cloud repository. Which of the following would BEST minimize backup size?

Options

ALocal snapshots
BDifferential backups
CFile-based replication
DChange block tracking

Explanation

Differential backups capture all data that has changed since the last full backup. In this scenario, new files are created only once per month, meaning the vast majority of daily backup activity involves small modifications to already-existing large files. A differential backup will only include files that changed since the last full, keeping daily backup sizes small relative to doing repeated full backups. Comparing the other options: Local snapshots (A) capture the full state of a volume at a point in time - they are storage-efficient on-disk but do not minimize the data sent to a cloud repository. File-based replication (C) replicates entire files whenever any change is detected, which is very inefficient when files are extremely large but only receive small modifications. Change block tracking (D) operates at the block/disk level and is primarily a hypervisor-level feature for VM image backups rather than a general file-server backup strategy; the question context is about a backup solution for file servers. Differential backups represent the best standard file-level strategy to minimize daily backup sizes while ensuring recoverability.

Topics

#backup strategy#change block tracking#differential backup#cloud repository

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