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Exam AWS Certified Solutions Architect - Professional topic 1 question 1012 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Professional

Question #: 1012
Topic #: 1

[All AWS Certified Solutions Architect - Professional Questions]

A company is deploying a new cluster for big data analytics on AWS. The cluster will run across many Linux Amazon EC2 instances that are spread across multiple Availability Zones.

All of the nodes in the cluster must have read and write access to common underlying file storage. The file storage must be highly available, must be resilient, must be compatible with the Portable Operating System Interface (POSIX), and must accommodate high levels of throughput.

Which storage solution will meet these requirements?

A. Provision an AWS Storage Gateway file gateway NFS file share that is attached to an Amazon S3 bucket. Mount the NFS file share on each EC2 instance in the cluster.
B. Provision a new Amazon Elastic File System (Amazon EFS) file system that uses General Purpose performance mode. Mount the EFS file system on each EC2 instance in the cluster.
C. Provision a new Amazon Elastic Block Store (Amazon EBS) volume that uses the io2 volume type. Attach the EBS volume to all of the EC2 instances in the cluster.
D. Provision a new Amazon Elastic File System (Amazon EFS) file system that uses Max I/O performance mode. Mount the EFS file system on each EC2 instance in the cluster.

Show Suggested Answer

Suggested Answer: D 🗳️

by ggrodskiy at Nov. 20, 2022, 4:03 p.m.

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Comments

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SkyZeroZx

1 year, 11 months ago

Selected Answer: D

POSIX == Performance then D

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Sudeepshiv

2 years ago

Selected Answer: D

High level of Throughput

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SIX

2 years ago

Selected Answer: D

D is the correct answer

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mo1311990

2 years, 1 month ago

its "D" keyword high level of throughput

upvoted 4 times

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Kende

2 years, 5 months ago

"D" is the one. Max I/O mode: It's best suited for parallelized workloads, such as big data analysis.

upvoted 3 times

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ggrodskiy

2 years, 6 months ago

D The file storage must be highly available, must be resilient, must be compatible with the Portable Operating System Interface (POSIX), and must accommodate high levels of throughput 'high levels of throughput' - Max I/O performance mode

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pixepe

2 years, 6 months ago

B When many instances needs POSIX volume, it's EFS when latency sensitiveness is criteria, it's General Purpose Performance Mode From AWs, Amazon EFS offers two performance modes, General Purpose and Max I/O: General Purpose mode supports up to 35,000 IOPS and has the lowest per-operation latency. File systems with EFS One Zone storage classes always use General Purpose performance mode. For file systems with EFS Standard storage classes, you can use either the default General Purpose performance mode or the Max I/O performance mode. Max I/O mode supports 500,000+ IOPS and has higher per-operation latencies when compared to General Purpose mode. https://docs.aws.amazon.com/efs/latest/ug/performance.html

upvoted 2 times

pixepe

2 years, 6 months ago

My bad, and can't edit answer. Question does NOT ask to reduce latency, It is asking 'high levels of throughput' which corresponds to answer D. "Max I/O performance mode scales to higher levels of aggregate throughput and operations per second with the tradeoff of higher latencies." - AWS FAQ on EFS

upvoted 4 times

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Heer

2 years, 6 months ago

Right option B 1)Highly available and compatible with POSIX is NFS 2)General performance provides both read and write access . If the ask would have been to prove the highest read and write then option D would have been the right option

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ggrodskiy

2 years, 6 months ago

B correct. https://docs.aws.amazon.com/efs/latest/ug/creating-using.html

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