Answer - C.
The below snapshot from the AWS documentation shows the different disaster recovery techniques.
For more information on Disaster recovery techniques, please refer to the below URL:
https://aws.amazon.com/blogs/aws/new-whitepaper-use-aws-for-disaster-recovery/
Disaster recovery deployment techniques are used to ensure business continuity in the event of a disaster or outage. These techniques involve deploying backup resources and systems to restore business operations as quickly as possible.
Let's go through each of the options listed and determine if they are a valid disaster recovery deployment technique or not:
A. Pilot light: This is a disaster recovery deployment technique in which a minimal version of an application or system is always running in the cloud. The full application can be quickly deployed if a disaster occurs. This technique allows for a quick and cost-effective recovery in the event of a disaster.
B. Warm standby: This is another disaster recovery deployment technique in which a duplicate of the primary system is running in the cloud. Data is replicated from the primary system to the standby system on a regular basis. If a disaster occurs, the standby system can be quickly activated to restore business operations.
C. Single Site: This is not a disaster recovery deployment technique. Single site refers to a configuration in which all resources are located in a single data center or location. In the event of a disaster or outage, there is no backup or redundancy available to restore business operations.
D. Multi-Site: This is a disaster recovery deployment technique in which resources are deployed across multiple data centers or locations. If one location becomes unavailable due to a disaster or outage, business operations can be restored from another location.
Therefore, the correct answer is C. Single Site, which is not a valid disaster recovery deployment technique. The other options, Pilot Light, Warm Standby, and Multi-Site, are all valid disaster recovery deployment techniques.
