ACI - Mod 6 Part 10

What is a cold site in the context of disaster recovery?

• A. A backup facility with pre-installed and pre-configured equipment.

• B. A backup facility with necessary physical infrastructure but no pre-installed equipment.

• C. A backup facility that is fully operational and ready to take over immediately.

• D. A backup facility that is located in a different geographical region.

Answer explanation

A cold site in disaster recovery is a backup facility with necessary physical infrastructure but no pre-installed equipment, making it less costly than a fully operational site.

Why might a company choose a cold site over a fully operational backup site?

• A. Because it provides faster recovery times.

• B. Because it is more cost-effective.

• C. Because it requires no maintenance.

• D. Because it is located closer to the main site.

Answer explanation

A company might choose a cold site over a fully operational backup site because it is more cost-effective.

What is one of the main disadvantages of using a cold site?

• A. Higher maintenance costs.

• B. Longer recovery time compared to warm or hot sites.

• C. Lack of physical infrastructure.

• D. Inability to store critical data.

Answer explanation

One of the main disadvantages of using a cold site is the longer recovery time compared to warm or hot sites, which can delay the resumption of operations during a disaster.

What makes a cold site an attractive option for organizations with budget constraints?

• A. It requires continuous investment in hardware.

• B. It provides a viable disaster recovery solution without requiring continuous investment in hardware and ongoing maintenance.

• C. It offers the fastest recovery time.

• D. It is always fully operational.

Answer explanation

A cold site is an attractive option for organizations with budget constraints because it provides a viable disaster recovery solution without requiring continuous investment in hardware and ongoing maintenance.

What is the purpose of the disaster recovery policy?

• Preventing cybersecurity incidents from occurring.

• Ensuring damage is quickly recovered from after an incident.

• Performing regular backups of all data.

• Analysing the cause of attacks and identifying improvements to procedures.

Answer explanation

The purpose of the disaster recovery policy is to ensure damage is quickly recovered from after an incident, not preventing incidents or performing backups.

An online stock trading application is deployed to multiple Availability Zones in the us-east-1 region (N. Virginia) and uses RDS to host the database. Considering the massive financial transactions that the trading application handles, the company has hired you to be a consultant to make sure that the system is scalable, highly available, and disaster resilient. In the event of failure, the Recovery Time Objective (RTO) must be less than 2 hours and the Recovery Point Objective (RPO) must be 10 minutes to meet the compliance requirements set by the regulators.

 

In this scenario, which Disaster Recovery strategy can be used to achieve the RTO and RPO requirements in the event of system failure?

• Take 15-minute database backups stored in Glacier with transaction logs stored in S3 every 5 minutes

• Store hourly database backups to an EC2 instance store volume with transaction logs stored in an S3 bucket every 5 minutes

• Take hourly database backups to an S3 bucket with transaction logs stored in S3 every 5 minutes. Set up a Cross-Region Replication (CRR) to another AWS Region

• Configure your database to use synchronous master-slave replication between multiple Availability Zones

Answer explanation

Take hourly database backups to an S3 bucket with transaction logs stored in S3 every 5 minutes. Set up a Cross-Region Replication (CRR) to another AWS Region is the correct choice to achieve the RTO and RPO requirements in the event of system failure.