Topic 1 Question 240

AWS Certified Solutions Architect - Associate

Topic 1 Question 240
A company previously migrated its data warehouse solution to AWS. The company also has an AWS Direct Connect connection. Corporate office users query the data warehouse using a visualization tool. The average size of a query returned by the data warehouse is 50 MB and each webpage sent by the visualization tool is approximately 500 KB. Result sets returned by the data warehouse are not cached.

Which solution provides the LOWEST data transfer egress cost for the company?
- Host the visualization tool on premises and query the data warehouse directly over the internet.
- Host the visualization tool in the same AWS Region as the data warehouse. Access it over the internet.
- Host the visualization tool on premises and query the data warehouse directly over a Direct Connect connection at a location in the same AWS Region.
- Host the visualization tool in the same AWS Region as the data warehouse and access it over a Direct Connect connection at a location in the same Region.
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- 正解だと思う選択肢: D
  D: Direct Connect connection at a location in the same Region will provide the lowest data transfer egress cost, improved performance, and lower complexity
  
  Why it is not C is because the visualization tool is hosted on-premises, as it's not hosted in the same region as the data warehouse the data transfer between them would occur over the internet, thus, would incur in egress data transfer costs.
  
  👍 4
  alexleely2023/01/21
- 正解だと思う選択肢: D
  Correct answer is D
  
  👍 3
  mhmt44382023/01/15
- 正解だと思う選択肢: D
  A. --> No since if you access via internet you are creating egress traffic. B. -->It's a good choice to have both DWH and visualization in the same region to lower the egress transfer (i.e. data going egress/out of the region) but if you access over internet you might still have egress transfer. C. -> Valid but in this case you send out of AWS 50MB if you query the DWH instead of the visualization tool, D removes this need since puts the visualization tools in AWS with the DWH so reduces data returned out of AWS from 50MB to 500KB D. --> Correct, see explanation on answer C
  
  Useful links: AWS Direct Connect connection create a connection in an AWS Direct Connect location to establish a network connection from your premises to an AWS Region. https://docs.aws.amazon.com/directconnect/latest/UserGuide/Welcome.html
  
  👍 3
  AlessandraSAA2023/03/02
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