4.1.a : Quiz RTO & RPO (Doshi) Flashcards
(1)What is Recovery Time Objective (RTO)?
A. The extent of acceptable system downtime.
B. The time period the crisis is expected to last
C. The extent of acceptable data loss.
D. The time required for the crisis management team to respond
Answer: A. The extent of acceptable system downtime.
Explanation:
The RTO is a measure of the user’s tolerance to downtime. This is the amount of downtime of the
business process that the business can tolerate and still remain viable .RTO is basically extent of
system downtime that is acceptable by the organization. In case of critical systems, generally RTO is zero or near to zero. RPO is extent of acceptable data loss
(2)What level of Recovery Time Objective (RTO) will a critical monitoring system have?
A. Very high RTO
B. Very low RTO, close to zero
C. Close to a year
D. Medium level of RTO, close to 50 %
Answer: B. Very low RTO, close to zero
Explanation:
The RTO is a measure of the user’s tolerance to downtime. In case of critical systems, generally RTO
is zero or near to zero. Low RTO indicates that system should be resumed at the earliest. For
example, if RTO is 2 hours, system should be resumed within 2 hours and if RTO is 72 hours, system
should be resumed within 72 hours. Thus, in case of critical system generally RTO is kept low to
ensure immediate resumption of service
(3) What is Recovery Point Objective (RPO)?
A. The extent of acceptable system downtime.
B. The time period the crisis is expected to last
C. The extent of acceptable data loss.
D. The date by which lost data can be recovered by Recovery team
Answer: C. The extent of acceptable data loss.
Explanation:
RPO is extent of acceptable data loss. For example, if RPO is 2 hours, then organization can afford to
loss at the most data captured during last 2 hours. They need to design back-up strategy in such a
way that back-up should be taken every 2 hours. Back-up is taken at 2.00 PM, 4.00 PM, 6.00 PM and
so on. In this case, if data is corrupted at 5.59 then back-up data up-to 4.00 will be available with the
organization. Hence data loss will not be more than 2 hours.
(4)A Recovery Point Objective (RPO) will be deemed critical if it is?
A. Small
B. Large
C. Medium
D. Large than industry standards
Answer: A. Small
Explanation:
RPO is the extent of acceptable data loss to a business. The lower the extent of acceptable data loss,
the more critical the situation. For example, an organization having RPO of 0 hours need to ensure
that there should not be any data loss at all. They should work on stringent back-up strategy. Hence
small RPO indicates that systems are critical for the organization.
(5)If the Recovery Point Objective (RPO) is close to zero, how will the overall cost of maintaining
the environment for recovery be?
A. High
B. Low
C. Medium
D. There is no relation between RPO and cost.
Answer: A. High
Explanation:
RPO is the extent of acceptable data loss to a business. The lower the extent of acceptable data loss,
the more critical the situation. For example, an organization having RPO of 0 hours need to ensure
that there should not be any data loss at all. They should work on stringent back-up strategy. Hence
cost of maintaining the environment will high in case RPO is zero or close to zero.
(6)A hot site should be implemented as a recovery strategy when the:
A. recovery time objective (RTO) is low.
B. recovery point objective (RPO) is high.
C. recovery time objective (RTO) is high.
D. disaster tolerance is high
Answer: A. recovery time objective (RTO) is low.
Explanation:
A low RTO means disaster tolerance is also low. If this time gap is low, recovery strategies that can
be implemented within a short period of time, such as a hot site, should be used. Cold site can be used (which takes more time for resumption of services) when RTO is high
(7) In which of the following situations is it MOST appropriate to implement data mirroring as the
recovery strategy?
A. Disaster tolerance is high.
B. Recovery time objective is high.
C. Recovery point objective is low.
D. Recovery point objective is high.
Answer: C. Recovery point objective is low
Explanation:
Data mirroring is the technique in which data are backed-up concurrently without any time gap.
Such techniques are costly to implement and generally used for critical data where RPO is low.
RPO is the extent of acceptable data loss to a business. For example, an organization having RPO of
0 hours need to ensure that there should not be any data loss at all. They should work on stringent back-up strategy.
(8)Following is the RTO and RPO of a financial system:
RTO-96 hours
RPO-0 hours (No data loss)
Which of the following is the MOST cost-effective solution?
A. A hot site that can be operational in two hours with data backup every 2 hours.
B. Reciprocal agreement for alternate site with data backup every 2 hours.
C. Synchronous backup of the data and standby active systems in a hot site
D. Synchronous backup of the data in a warm site that can be operational in 48 hours
Answer: D. Synchronous backup of the data in a warm site that can be operational in 48 hours
Explanation:
Synchronous backup of the data in a warm site that can be operational in 48 hours meets both RPO
and RTO. Also, option C meets the RPO and RTO but is more costly than option D. Option A and B does not meet RPO.
(9) A hot site should be implemented as a recovery strategy when the:
A. disaster tolerance is low.
B. recovery point objective (RPO) is high.
C. recovery time objective (RTO) is high.
D. disaster tolerance is high.
Answer: A. disaster tolerance is low.+
Explanation:
Disaster tolerance is the time gap during which the business can accept non availability of IT
facilities. If this time gap is low, recovery strategies that can be implemented within a short period of time, such as a hot site, should be used. A high RPO/RTO means that the process can wait for a longer time. In such cases, other recovery alternatives, such as warm or cold sites, should be
considered.
