Incremental backups must rely on the last full backup and the last incremental backup to perform data recovery Complete recovery, data reconstruction during recovery is slower than full backup, and recovery window is larger.

The statement is false because it incorrectly describes the dependencies for restoring data from an incremental backup. A complete data recovery using an incremental backup strategy requires the last full backup and all subsequent incremental backups taken in sequence up to the desired recovery point. The statement erroneously claims that only the last full backup and the last incremental backup are needed, which is characteristic of a differential backup, not an incremental one. While the second part of the statement—that data reconstruction is slower and the recovery window is larger compared to a full backup—is factually correct, the fundamental error in the first part renders the entire assertion false. Precision is paramount, and the description of the recovery process is technically inaccurate for an incremental backup.

The statement cannot be considered "True" because it contains a critical inaccuracy regarding the components needed for an incremental restore. The process involves restoring the last full backup and then applying every incremental backup in the chain, in chronological order. The statement's simplification to include only the "last incremental backup" is a misrepresentation of the process and would lead to incomplete data recovery.

1. Huawei HCIA-Storage V4.5 Training Material.

In the "Backup Solution Fundamentals" section

the description of backup types clarifies the restore process for incremental backups. It states that an incremental backup saves data changed since the last backup (either full or incremental). Consequently

a full restore requires the last full backup and all subsequent incremental backups. This directly contradicts the question's claim.

Reference: Huawei Certified ICT Associate - Storage V4.5

Training Material

Chapter on "Backup Solution"

Section: "Common Backup Types".

2. University Courseware on System Administration.

Standard computer science and IT administration curricula explain that the primary trade-off of incremental backups is faster backup times at the cost of more complex and slower restores. Course materials consistently emphasize that the restoration chain involves the full backup plus the entire sequence of incremental backups.

Reference: Patterson

D. A.

& Hennessy

J. L. (2017). Computer Organization and Design: The Hardware/Software Interface. Morgan Kaufmann. In chapters discussing storage and I/O systems

the principles of backup and recovery are detailed

highlighting the chain dependency of incremental backups for a full restore. (e.g.

Chapter 6: Storage and Other I/O Topics).

3. Official Vendor Documentation (General Principle).

General principles of data protection

as outlined in documentation from major storage and backup vendors (which align with the concepts tested in Huawei's certification)

define an incremental restore as a multi-stage process. The process is universally described as: [Step 1] Restore the last full backup. [Step 2] Sequentially apply all incremental backups since that full backup.

Reference: This is a foundational concept in data protection

covered in materials such as the SNIA (Storage Networking Industry Association) Dictionary and technical briefs on data protection strategies.