CSCU Data Backup and Recovery 2

Question 1

What is the 3-2-1 backup rule?

Accepted Answer

Keep 3 copies of data on 2 different media types with 1 copy offsite

Answer

Back up data 3 times a day on 2 devices using 1 software

Answer

Use 3 encryption methods across 2 servers with 1 password

Answer

Store 3 files in 2 folders on 1 hard drive

Question 2

What is the key difference between incremental and differential backups?

Accepted Answer

Incremental backups only save changes since the last backup of any type, while differential backups save all changes since the last full backup

Answer

Incremental backups are faster to restore than differential backups

Answer

Differential backups use less storage space than incremental backups

Answer

There is no difference; the terms are interchangeable

Question 3

What is a Recovery Point Objective (RPO)?

Accepted Answer

The maximum acceptable amount of data loss measured in time

Answer

The maximum time allowed to restore a system after failure

Answer

The total cost of recovering lost data

Answer

The number of recovery attempts allowed before escalation

Question 4

Why should backup integrity be regularly tested?

Accepted Answer

To verify that backup data can be successfully restored when needed

Answer

To ensure the backup software license is still valid

Answer

To reduce the size of backup files

Answer

To increase the speed of the backup process

Question 5

What type of malware specifically targets backup files to prevent data recovery?

Accepted Answer

Ransomware

Answer

Spyware

Answer

Adware

Answer

Browser hijackers

Question 6

What is an air-gapped backup?

Accepted Answer

A backup stored on media that is physically disconnected from any network

Answer

A backup stored in a compressed format

Answer

A backup that is encrypted with a strong password

Answer

A backup stored on a cloud service with limited access