Which of the below mentioned options will not affect the latency of the application?

A user is planning to launch a scalable web application.

Which of the below mentioned options will not affect the latency of the application?

A. Region.

B. Provisioned IOPS.

C. Availability Zone.

D. Instance size.

Answer: C

Explanation:

In AWS, the instance size decides the I/O characteristics. The provisioned IOPS ensures higher throughput, and lower latency. The region does affect the latency; latency will always be less when the instance is near to the end user. Within a region the user uses any AZ and this does not affect the latency. The AZ is mainly for fault toleration or HA.

Reference: http://media.amazonwebservices.com/AWS_Security_Best_Practices.pdf