CSCU - Certified Secure Computer User Data Backup and Recovery Questions and Answers

Question 1

A company performs a full backup every Sunday. On Wednesday, the system crashes. Using a differential backup from Tuesday, how many backup sets are required to restore the data?

Accepted Answer

The Sunday full backup and the Tuesday differential backup.

Answer

A differential backup contains all changes made since the last full backup. Therefore, to restore the system, you only need the last full backup (Sunday) and the most recent differential backup (Tuesday).

Question 2

Which data backup strategy involves copying only the data that has changed since the last backup of any type, resulting in the smallest backup sizes and fastest backup times?

Accepted Answer

Incremental backup

Answer

An incremental backup only copies data that has changed since the last backup, whether it was a full or another incremental backup. This makes the individual backup files smaller and the process faster compared to full or differential backups.

Question 3

A user follows the '3-2-1 rule' for their critical photos. They have the original files on their laptop, a copy on an external hard drive stored in their desk, and another copy uploaded to a cloud storage service. Which part of the rule does the cloud storage service primarily fulfill?

Accepted Answer

Maintaining one off-site copy

Answer

The 3-2-1 backup rule recommends having three copies of your data on two different types of media, with one copy stored off-site. The cloud storage service acts as the off-site copy, protecting the data from local disasters like fire, flood, or theft that could destroy both the laptop and the local external hard drive.

Question 4

A business determines that it cannot afford to lose more than 4 hours of transaction data in the event of a server failure. This 4-hour tolerance for data loss is known as the:

Accepted Answer

Recovery Point Objective (RPO)

Answer

The Recovery Point Objective (RPO) refers to the maximum acceptable amount of data loss an organization can tolerate, measured in time. It dictates the minimum frequency for backups. The RTO, on the other hand, is about how quickly the system must be restored to operational status.

Question 5

What is the most critical reason for regularly testing your data backups?

Accepted Answer

To verify that the data can be successfully restored.

Answer

The primary purpose of testing backups is to ensure their integrity and confirm that the data is recoverable in a real data loss scenario. A backup is useless if it is corrupted or incomplete and cannot be restored successfully.

CSCU - Certified Secure Computer User Practice Test

CSCU - Certified Secure Computer User Practice Test

CSCU - Certified Secure Computer User Data Backup and Recovery Questions and Answers