Exam CISM topic 1 question 352 discussion

incremental is the slowest to recovery.

The question is asking about slowest to restore. Not slowest to take a backup in which case full would be the correct answer. But while incrementals are fastest to backup they are the slowest to restore since it needs the most recent and full and all the incrementals since the last full backup.

Restore time Incremental is slower than differential, differential is slower than full.

C. Incremental backup Incremental backups only store the data that has changed since the last backup, which means that when you need to restore data, you may have to go through multiple incremental backups to fully restore the application to its latest state. This process can take longer compared to other backup methods like a full backup or differential backup, where you can restore the entire dataset from a single backup point.

D. AIO Chapter 6. "If a full backup takes a long time to complete, it should probably be performed during times of lower demand or system utilization."

The key word here is RESTORE. Time to restore a backup is different from time to create a backup. Creating a full backup takes longer than creating an incremental backup. However, restoring a full backup is quicker than restoring incremental backups Here's a breakdown: Full Backup: A full backup captures all data at a specific point in time. When restoring data from a full backup, you only need to restore that single backup. While creating a full backup may take more time and storage space, the restore process is usually faster because you're working with a complete dataset. Incremental Backup: An incremental backup only captures data that has changed since the last backup (which could be a full or a previous incremental backup). When restoring data from incremental backups, you need to restore the last full backup and then apply each incremental backup in the order they were created. The restore process can be time-consuming, especially if there are many incremental backups in the chain. I too was initially confused and i selected Full backup instead of Incremental backup.

Full backup: A complete copy of every file on the computer or network. Requires more time and storage space than incremental backup. Easy to restore, better for critical data. Incremental backup: A copy of any new or changed files since the last backup. Requires less time and storage space than full backup. Faster to make, but slower to restore.

C. Incremental backup Incremental backups only store the data that has changed since the last backup, which means that when you need to restore data, you may have to go through multiple incremental backups to fully restore the application to its latest state. This process can take longer compared to other backup methods like a full backup or differential backup, where you can restore the entire dataset from a single backup point.

Incremental is a FULL divided on more and more media…

Incremental backup

it is C

In general, a full backup takes the longest time to restore data for an application, as it involves backing up all data on a system or application. While differential and incremental backups only back up changes made since the last backup, a full backup requires a complete copy of all data, which can be time-consuming to restore. Disk mirroring is not a backup method but rather a way to provide real-time data replication and redundancy for high-availability systems

This takes more time, hence is slower.

https://www.business2community.com/cybersecurity/types-of-backup-understanding-full-differential-and-incremental-backup-02298785 Incremental Backup = Restoration Speed: Slowest

Full Backups are always the slowest and take the most time. Answer is D. --------------- Source: https://www.ubackup.com/articles/incremental-vs-differential-backup.html

D. obviously.