Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 240 discussion

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

Hosting the visualization tool in the same AWS Region as the data warehouse and accessing it over a Direct Connect connection within the same Region eliminates data transfer fees and ensures low-latency, high-bandwidth connectivity. A. Hosting the visualization tool on premises and querying the data warehouse over the internet incurs data transfer costs for every query result, as well as potential latency and bandwidth limitations. B. Hosting the visualization tool in the same AWS Region as the data warehouse but accessing it over the internet still incurs data transfer costs for each query result. C. Hosting the visualization tool on premises and querying the data warehouse over a Direct Connect connection within the same AWS Region incurs data transfer costs for every query result and adds complexity by requiring on-premises infrastructure.

Why C is Less Cost-Effective Than D: While Direct Connect minimizes costs in both cases, hosting the visualization tool on premises (C) still incurs some egress costs when pulling large query results to the corporate office. Hosting the visualization tool in the same AWS Region as the data warehouse (D) eliminates most egress costs **entirely** due to AWS's intra-region free data transfer policy.

This is question that need a careful reading of the question. Please note: in the question that the company has a DX connection but it doesn't mention the company is utilizing the DX to query the data warehouse (this indicates that the query was using internet). So my verdict would be to place the visualization tool on-prem (which it already is) and use the DX to query the data warehouse to reduce cost of (DTO) so I vote for C

The answer is C. At no point does the question suggest that the DWH source is out of Region.

It's D. Host the visualization on the same region to avoid egress cost and access the tool via AWS Direct connection.

Leverage the existing DirectConnect so not incur data transfer charge

D. 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.

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

D. 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.

by hosting in same region, you have 500kb transfer charged on internet transfer teir, 50MB charged in inter-region tier. using direct link, both are charged in direct link tier. direct link tier is not cheap. so i go for B

Aaaaaaaa

D let you reduce at minimum the data transfer costs

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.

https://www.nops.io/reduce-aws-data-transfer-costs-dont-get-stung-by-hefty-egress-fees/

Correct answer is D

Should be D https://aws.amazon.com/directconnect/pricing/ https://aws.amazon.com/blogs/aws/aws-data-transfer-prices-reduced/