DRI IT Disaster Recovery and Resilience

Question 1

What is the difference between a 'warm site' and a 'hot site' in IT disaster recovery?

Accepted Answer

A hot site is fully equipped and operational, ready for immediate failover; a warm site has equipment that must be configured and loaded before use

Answer

A warm site uses older equipment; a hot site uses current-generation hardware

Answer

A warm site is located domestically; a hot site is located internationally

Answer

A hot site is maintained by a vendor; a warm site is maintained internally

Question 2

Which IT resilience concept involves maintaining duplicate systems that operate simultaneously so that failure of one component has no impact on service availability?

Accepted Answer

High availability (HA) architecture

Answer

Backup and restore procedures

Answer

Redundant network pathways only

Answer

Regular software patching and updates

Question 3

What is 'replication lag' and why is it significant for IT disaster recovery?

Accepted Answer

The time gap between when data is written to the primary system and when it appears in the replica

Answer

The delay between a server failure and the activation of backup systems

Answer

The time required to physically transport backup tapes to an offsite location

Answer

The processing delay caused by running backup jobs during business hours

Question 4

Which of the following BEST describes the concept of 'Defense in Depth' in IT resilience?

Accepted Answer

Employing multiple layers of security and resilience controls so that failure of one layer does not compromise the entire system

Answer

Using the most expensive security technology available for all systems

Answer

Focusing all resilience investment on the perimeter network to prevent intrusions

Answer

Maintaining a single, comprehensive system that addresses all resilience needs

Question 5

During IT disaster recovery, what is the significance of the 'failback' process?

Accepted Answer

Failing back refers to the process of returning operations from the recovery environment to the restored primary environment after the incident is resolved

Answer

Failback is the term for failing over to a backup site when the primary site fails

Answer

Failback describes the process of restoring deleted files from backup

Answer

Failback is a testing technique for validating recovery procedures

Question 6

What is meant by 'Recovery Point Actual (RPA)' versus 'Recovery Point Objective (RPO)'?

Accepted Answer

RPO is the target data loss tolerance; RPA is the actual data loss achieved during a specific recovery event

Answer

RPA is the regulatory requirement; RPO is the internal goal

Answer

RPA applies to real-time systems; RPO applies to batch-processing systems

Answer

These terms are interchangeable in modern DR practice