Exam Professional Cloud Architect topic 8 question 9 discussion

D is most cost effective as don't want to use until 'next year'

D is the correct answer Clue is "next year they want to use the data" Therefore moving the data to coldline storage makes more sense

For cost-efficient long-term storage with reasonably timely access, compressing hourly data snapshots on the vehicle and storing in GCS Nearline is the best fit. This allows for ML training next year without incurring high storage or streaming costs.

Next year? Obviously coldline (D)

They want to use the data next year, it means they still need to access the data for data early to perform data cleaning and prepare the data to access it next year

A next year...

The data is going to be used next year. Which mean infrequent. Coldline is long term storage that doesn't need to be accessed maybe once every 5 year. retrieval cost is high

I hope this question isn't on the test. This quesiton is the most obnoxiously thoughtless and ill considered question I've come across and there are a lot of really bad ones on this test. I would probably pick D. Dataflow can be really expensive.

If the words 'next year' wouldn't have been there then Big Table 💯 . But as it will be required next year so Coldline bucket would be the most cost effective solution.

One option that TerramEarth could consider is storing the telemetry data in a Google Cloud Storage (GCS) Nearline bucket. This would allow them to store the data in the cloud at a lower cost than other storage options, while still providing quick access to the data when needed. By having the vehicle's computer compress the data in hourly snapshots, they can reduce the amount of storage needed and further reduce costs.

ok for D

D is the correct answer

I miss the point about cost optimization and I thought C is right. After reading the discussions I realized D is right answer. I am going with D

Big query does it. B...when it's long term storage, it costs same as coldline https://cloud.google.com/bigquery/docs/best-practices-storage

the highlight here is machine learning and not disaster recovery or data arhiving which is what coldline storages are for. You also dont pay for datawarehousing in bigquery until you read from it for machine learning. So its cheap and good for ML. i go with B

D is the correct answer

D makes sense IF the "computer" on the vehicle can compress data and can take snapshots. Are we supposed to to assume that these "computers" have snapshot capability though it is no stated anywhere in the question? Yet, if magically this was possible, this is the correct answer. If this indeed is the correct answer then the only logical deduction is that the questions is stated horribly. I only can hope the real exam isn't like this.