Your firm has uploaded a large amount of aerial image data to S3 In the past, in your on-premises
environment, you used a dedicated group of servers to oaten process this data and used Rabbit MQ – An open
source messaging system to get job information to the servers. Once processed the data would go to tape and
be shipped offsite. Your manager told you to stay with the current design, and leverage AWS archival storage
and messaging services to minimize cost. Which is correct?
A.
Use SQS for passing job messages use Cloud Watch alarms to terminate EC2 worker instances when they
become idle. Once data is processed, change the storage class of the S3 objects to Reduced Redundancy
Storage.
B.
Setup Auto-Scaled workers triggered by queue depth that use spot instances to process messages in SOS Once
data is processed,
C.
Change the storage class of the S3 objects to Reduced Redundancy Storage. Setup Auto-Scaled workers
triggered by queue depth that use spot instances to process messages in SQS Once data is processed, change
the storage class of the S3 objects to Glacier.
D.
Use SNS to pass job messages use Cloud Watch alarms to terminate spot worker instances when they become
idle. Once data is processed, change the storage class of the S3 object to Glacier.
C seems correct
seems to me C is the answer
c
c
C is Correct ANS
Answer is C but the “Change the storage class of the S3 objects to Reduced Redundancy Storage” must belong in the other answer as it is nonsensical in this context
Answer is B (Actually the option B is incomplete, please find the full line of the option B)
RRS cannot be answer here.
B.Setup Auto-Scaled workers triggered by queue depth that use spot instances to process messages in SQS. Once data is processed, change the storage class of the S3 objects to Glacier.
B.Setup Auto-Scaled workers triggered by queue depth that use spot instances to process messages in SQS. Once data is processed, change the storage class of the S3 objects to Reduced Redundancy Storage.
C.Setup Auto-Scaled workers triggered by queue depth that use spot instances to process messages in SQS. Once data is processed, change the storage class of the S3 objects to Glacier.
@pavan, the last sentence of B has been moved into C so it doubts you.
The answer should be C.
The question key part to focus on is “and leverage AWS archival storage
and messaging services to minimize cost.”
For that the storage that is the lowest cost in the answers is Glacier, in addition, the messaging cost is less for SQS then for SNS if they both exceed 1 million transactions which is free. The only answer that satisfies the above two criteria is answer C. Also, there does not seem to be an urgency in speed of messaging therefore SQS satisfies that need. SNS being more real time delivery mechanism.
C
Your manager told you to stay with the current design, and leverage AWS archival storage.
So cannot change storage class from s3 to RRS…confused
Manager: “Stay with the current design but make it cheaper.”
Sounds like most managers I’ve ever worked for. 🙂 They only part you treat literally is the part about being cheaper. The first part just means “Don’t break anything.” One of these days, Google Translate will be able to recognize and translate from “manager” to English.
http://jayendrapatil.com/aws-storage-options-whitepaper/
go to C