Scenarios: Workstation Backup and Recovery

Priya works as an IT technician at a regional accounting firm. The firm runs full backups every Sunday night and incremental backups Monday through Saturday. On Thursday morning, a workstation's hard drive fails and all data must be restored.

To fully restore the workstation, which set of backups does Priya need?

• Monday's, Tuesday's, and Wednesday's incremental backups only

• Sunday's full backup and Wednesday's incremental backup only

• Sunday's full backup and Monday's, Tuesday's, and Wednesday's incremental backups

• Sunday's full backup only

Compared to a differential backup strategy, why does the firm's incremental strategy require more sets to restore from?

• Incremental backups always copy more data than differential backups

• Each incremental backup replaces the previous full backup

• Each incremental backup saves only changes since the last backup, not since the last full

• Differential backups are stored off site, making them faster to access

What is one risk to the firm if Priya has never tested whether these backups can be successfully restored?

Kwame is the IT coordinator for a mid-sized dental clinic. He wants to set up a backup plan that follows the 3-2-1 rule. Right now, all backups are stored on a single external hard drive kept in the server room.

Which setup correctly follows the 3-2-1 backup rule?

• Three copies of data, all stored on external hard drives, kept in one location

• Two copies of data, on two different media types, with one copy stored off site

• Three copies of data, on three different media types, all stored on site

• Three copies of data, on two different media types, with one copy stored off site

Kwame decides to use a grandfather-father-son (GFS) rotation scheme. In this scheme, what does the "grandfather" backup typically represent?

• A daily backup overwritten each weekday

• A weekly backup stored for one month

• An off-site backup sent to a cloud provider

• A monthly backup kept for long-term retention

Name one specific change Kwame should make so the clinic's backup plan starts following the 3-2-1 rule, and explain what problem that change solves.