DRI Disaster Recovery Strategies & Techniques 3

Question 1

Which backup method copies ONLY the files that have changed since the last full backup and resets the archive bit after each run?

Accepted Answer

Incremental backup

Answer

Incremental backups capture only changes since the last backup of any type and clear the archive bit, resulting in smaller, faster backups but longer restore times.

Question 2

The 3-2-1 backup rule specifies keeping three copies of data on two different media with:

Accepted Answer

One copy offsite

Answer

The 3-2-1 rule requires three copies of data, stored on two different media types, with one copy maintained offsite to protect against localized disasters.

Question 3

Which DR strategy is MOST appropriate for a non-critical system with an RTO of 72 hours and a very limited budget?

Accepted Answer

Cold site

Answer

A cold site provides basic infrastructure (power, space, connectivity) with no pre-installed equipment, making it the lowest-cost option suitable for non-critical systems with long RTOs.

Question 4

In a parallel test, what distinguishes it from a full interruption test?

Accepted Answer

Parallel tests activate DR systems without shutting down the primary environment

Answer

A parallel test brings DR systems online and verifies they can process workloads while the primary site continues normal operations, unlike a full interruption test that shuts the primary site down.

Question 5

What is the key risk of using asynchronous replication compared to synchronous replication?

Accepted Answer

Potential data loss between the last sync and the failure event

Answer

Asynchronous replication acknowledges writes on the primary before confirming them on the secondary, meaning a failure can result in loss of the data that was in-flight at the time of the outage.

(DRI) Disaster Recovery Institute International Certification Practice Test

(DRI) Disaster Recovery Institute International Certification Practice Test

DRI Disaster Recovery Strategies & Techniques 3