High Availabily vs Fault Tolerance vs Disaster Recovery

Question 1

having redundant copies of an object or resource to make sure that another can
take its place when something happens to it

Answer 1

High Availability

Question 2

Ensure and agreed level of operational performance (uptime) for a higher-than-normal period

Answer 2

High availability

Question 3

99.9% availibility

Answer 3

8.77 hours of downtime per year

Question 4

99.999% availability

Answer 4

5.26 minutes of downtime per year

Question 5

Means that a system can continue operating even if one or more components begin to degrade and fail.

Answer 5

Fault-Tolerance

Question 6

When a component begins to fail, the system detects this and replaces the faulty component to restore working operations

Answer 6

Fault-Tolerance

Question 7

When a component begins to fail, the system detects this and reroutes the
operation to somewhere else that is healthy

Answer 7

Fault-Tolerance

Question 8

Ensuring that you have a standardized plan on how to recover your
operations in case of total failure

Answer 8

Disaster Recovery

Question 9

having a copy of your infrastructure running in a different location, so that if your primary experiences a disaster, you can quickly failover to your secondary

Answer 9

Disaster Recovery

Question 10

amount of time that you have to bring back up
your operation

Answer 10

RTO

Question 11

the amount of data loss that your business can tolerate

Answer 11

RPO