AWS Certified Big Data – Specialty — Question 9
A clinical trial will rely on medical sensors to remotely assess patient health. Each physician who participates in the trial requires visual reports each morning. The reports are built from aggregations of all the sensor data taken each minute.
What is the most cost-effective solution for creating this visualization each day?
Answer options
- A. Use Kinesis Aggregators Library to generate reports for reviewing the patient sensor data and generate a QuickSight visualization on the new data each morning for the physician to review.
- B. Use a transient EMR cluster that shuts down after use to aggregate the patient sensor data each night and generate a QuickSight visualization on the new data each morning for the physician to review.
- C. Use Spark streaming on EMR to aggregate the patient sensor data in every 15 minutes and generate a QuickSight visualization on the new data each morning for the physician to review.
- D. Use an EMR cluster to aggregate the patient sensor data each night and provide Zeppelin notebooks that look at the new data residing on the cluster each morning for the physician to review.
Correct answer: D
Explanation
The correct answer is D because using an EMR cluster at night to aggregate data is cost-effective and allows for the use of Zeppelin notebooks, which can provide a flexible and interactive way for physicians to review data. Options A, B, and C introduce unnecessary complexity or costs, such as maintaining transient clusters or using streaming which may not provide the daily reports efficiently.