TechKnowSurge
CompTIA Security+ 3.4
TechKnowSurge Catalog Interactives Restore It or Skip It?
InteractiveSecurityFree

Restore It or Skip It?

A full, nightly differentials and daytime incrementals. For each restore point, restore the backup or skip it? Land five in a row.

⚑ Complete this interactive to capture a CTF flag worth 5 points.

About this interactive

The lesson's scenario: a busy database with a 15-minute RPO, too big to copy in full during the week. The plan: a full backup that starts Friday evening and runs through the weekend; a differential every weeknight, Monday to Thursday; and incrementals every 15 minutes through the working day. To restore, start from the full. Then restore the latest differential taken before the target time, because each differential holds every change since the full. Then restore each incremental taken after that differential, up to the target. Say a bad patch means going back to 3 p.m. on Wednesday. Restore the weekend full, then Tuesday night's differential (Wednesday night's is too late), then each of Wednesday's incrementals up to 3 p.m. The lesson adds one caveat: the archive bit cannot run this plan, because the incrementals would clear bits the differentials need, so it takes backup software that tracks changes itself.

What you'll learn

Aligned to

CompTIA Security+
3.4 Explain the importance of resilience and recovery in security architecture.

Key terms

Full Backup
A complete copy of all selected data, serving as the baseline backup type from which other backup strategies operate.
Differential Backup
A backup type that copies only the data that has changed since the last full backup.
Incremental Backup
A backup type that copies only the data that has changed since the last backup of any type, minimizing storage use but requiring multiple restore steps.
Recovery Point Objective
RPO
The maximum acceptable amount of data loss measured in time, defining how far back data must be recoverable.

Topics

Interactive Streak Sort

About TechKnowSurge

TechKnowSurge builds IT and cybersecurity professionals through hands-on, concept-first training built around real understanding — not memorization. Free interactive tools, structured programs, and 25+ years of real-world experience, all in one place.

Explore free tools and programs →