Exam AWS Certified Database - Specialty topic 1 question 42 discussion

I think this is D https://docs.amazonaws.cn/en_us/AmazonRDS/latest/UserGuide/CHAP_BestPractices.html "If you are already using Provisioned IOPS storage, provision additional throughput capacity." Does D sound right?

Definitely D A will not help with the bottleneck, B and C will do things worse

D. Change the DB instance to an instance class with a higher maximum bandwidth the performance issue in this case is not related to storage nor cpu nor RAM, it is related to network bandwidth.

We need to understand the difference between throughput and IOPS. IOPS – Count of read/write operations per second. Throughput – Count of read/write bits per second (bps). This measures the amount of time it takes for a disk to read and write data. Throughput is typically the best storage metric when measuring data that needs to be streamed rapidly, such as images and video files. So it's not about the size (A). Provisioned IOPS storage to General Purpose SSD (gp2) (B) - rather worse performance judging by data from https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-volume-types.html Disable EBS optimization (E) - rather, it should be activated, if there is such a thing. Instance class with a higher maximum bandwidth (D) - we have "uses all of its maximum bandwidth for read throughput" in the question. We need to choose another instance class with a higher bandwidth - D.

Correct answer I think

Objective is to handle maximum bandwidth for read throughput used x A. Increase the size of the DB instance storage (unrelated) x B. Change the underlying EBS storage type to General Purpose SSD (gp2) (will slow down) x C. Disable EBS optimization on the DB instance (will slow down) D. Change the DB instance to an instance class with a higher maximum bandwidth https://docs.amazonaws.cn/en_us/AmazonRDS/latest/UserGuide/CHAP_BestPractices.html

A. Increase the size of the DB instance storage - nonsense; instance is using EBS B. Change the underlying EBS storage type to General Purpose SSD (gp2) -> nonsense; GP2 is slower than IO2 C. Disable EBS optimization on the DB instance -> nonsense; nothing like this exist D is the answer

Correct Answer ==>> D

My answer is D

Ans: D

Answer is D

D is the right answer

D. For high throughput.

D here! Throughput is related to Size/Type of Instance https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-optimized.html

Throughput is related to Size/Type of Instance https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-optimized.html

Sorry i mean D

Ans B here