Point-in-Time Data Synchronization: Ensuring Organizational Continuity

The Most Recent Point-in-Time Data Synchronization

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Question

Which of the following is defined as the most recent point in time to which data must be synchronized without adversely affecting the organization (financial or operational impacts)?

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Explanations

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A. B. C. D.

A.

The recovery point objective (RPO) is the maximum acceptable level of data loss following an unplanned "event", like a disaster (natural or man-made), act of crime or terrorism, or any other business or technical disruption that could cause such data loss.

The RPO represents the point in time, prior to such an event or incident, to which lost data can be recovered (given the most recent backup copy of the data)

The recovery time objective (RTO) is a period of time within which business and / or technology capabilities must be restored following an unplanned event or disaster.

The RTO is a function of the extent to which the interruption disrupts normal operations and the amount of revenue lost per unit of time as a result of the disaster.

These factors in turn depend on the affected equipment and application(s)

Both of these numbers represent key targets that are set by key businesses during business continuity and disaster recovery planning; these targets in turn drive the technology and implementation choices for business resumption services, backup / recovery / archival services, and recovery facilities and procedures.

Many organizations put the cart before the horse in selecting and deploying technologies before understanding the business needs as expressed in RPO and RTO; IT departments later bear the brunt of user complaints that their service expectations are not being met.

Defining the RPO and RTO can avoid that pitfall, and in doing so can also make for a compelling business case for recovery technology spending and staffing.

For the CISSP candidate studying for the exam, there are no such objectives for "point of time," and "critical time."Those two answers are simply detracters.

http://www.wikibon.org/Recovery_point_objective_/_recovery_time_objective_strategy

The answer to the question is A. Recovery Point Objective (RPO).

Recovery Point Objective (RPO) is defined as the maximum time period within which data can be lost or the most recent point in time to which data must be synchronized without adversely affecting the organization (financial or operational impacts). It is an important metric used in disaster recovery planning and business continuity planning. The RPO helps organizations to determine the amount of data loss that can be tolerated during a disaster and helps to set the recovery point for the backup and recovery process.

Recovery Time Objective (RTO) is defined as the maximum time period within which a business process or service must be restored after a disruption to avoid significant business impact. RTO is the amount of time it takes to recover a system after a disaster, outage or other interruption, and is typically measured in hours or days.

Point of Time Objective and Critical Time Objective are not standard industry terms.

In summary, Recovery Point Objective (RPO) is the most recent point in time to which data must be synchronized without adversely affecting the organization (financial or operational impacts). RTO is the maximum time period within which a business process or service must be restored after a disruption.