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Exam AWS Certified Solutions Architect - Associate SAA-C03 All Questions

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Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 993 discussion

A solutions architect is creating an application that will handle batch processing of large amounts of data. The input data will be held in Amazon S3 and the output data will be stored in a different S3 bucket. For processing, the application will transfer the data over the network between multiple Amazon EC2 instances.

What should the solutions architect do to reduce the overall data transfer costs?

  • A. Place all the EC2 instances in an Auto Scaling group.
  • B. Place all the EC2 instances in the same AWS Region.
  • C. Place all the EC2 instances in the same Availability Zone.
  • D. Place all the EC2 instances in private subnets in multiple Availability Zones.
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Suggested Answer: C 🗳️

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FlyingHawk
2 weeks, 4 days ago
Selected Answer: C
Data transfer within the zone is free, but cross-zone is not free: https://aws.amazon.com/blogs/architecture/overview-of-data-transfer-costs-for-common-architectures/
upvoted 1 times
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ckhemani
2 months, 1 week ago
Selected Answer: C
K. After research it seems C make sense since it is saying data transfer between EC2 and data transfter between two EC2 in AZ is free but not between AZ's. No cost within AZ: Data transfer between EC2 instances in the same AZ is free. Cross-AZ charges: If you transfer data between instances in different Availability Zones, you will be charged for the inter-zone data transfer. Region-based pricing: While data transfer within an AZ is free, data transfer across different regions may also incur charges
upvoted 2 times
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ckhemani
2 months, 1 week ago
Selected Answer: B
S3 is repliacted only to 3 AZ's and you can't define AZ while creating the Bucket. If this Question would have said about Directory which is One Zone express where you can define the AZ then it makes sense to select option C. Option B makes sense to configure EC2 in same region since EC2/S3 transfer data between same region is free too.
upvoted 2 times
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78b9037
2 months, 1 week ago
Selected Answer: C
Two reasons: 1. EC2 instances in the same AZ can communicate with each other at no cost. 2. Data transfer between EC2 instances and S3 within the same AZ is free https://aws.amazon.com/blogs/architecture/overview-of-data-transfer-costs-for-common-architectures/
upvoted 2 times
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sOI852POL
3 months, 2 weeks ago
Selected Answer: C
C
upvoted 2 times
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viejito
4 months ago
Respuesta correcta C :
upvoted 2 times
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aragon_saa
4 months ago
Selected Answer: C
Answer is C
upvoted 2 times
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