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Question 334 - SCS-C01 discussion

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You have a set of application , database and web servers hosted in AWS. The web servers are placed behind an ELB. There are separate security groups for the application, database and web servers. The network security groups have been defined accordingly. There is an issue with the communication between the application and database servers. In order to troubleshoot the issue between just the application and database server, what is the ideal set of MINIMAL steps you would take?

Please select:

A.
Check the Inbound security rules for the database security group Check the Outbound security rules for the application security group
Answers
A.
Check the Inbound security rules for the database security group Check the Outbound security rules for the application security group
B.
Check the Outbound security rules for the database security groupI Check the inbound security rules for the application security group
Answers
B.
Check the Outbound security rules for the database security groupI Check the inbound security rules for the application security group
C.
Check the both the Inbound and Outbound security rules for the database security group Check the inbound security rules for the application security group
Answers
C.
Check the both the Inbound and Outbound security rules for the database security group Check the inbound security rules for the application security group
D.
Check the Outbound security rules for the database security groupCheck the both the Inbound and Outbound security rules for the application security group
Answers
D.
Check the Outbound security rules for the database security groupCheck the both the Inbound and Outbound security rules for the application security group
Suggested answer: A

Explanation:

Here since the communication would be established inward to the database server and outward from the application server, you need to ensure that just the Outbound rules for application server security groups are checked. And then just the Inbound rules for database server security groups are checked.

Option B can't be the correct answer. It says that we need to check the outbound security group which is not needed. We need to check the inbound for DB SG and outbound of Application SG. Because, this two group need to communicate with each other to function properly. Option C is invalid because you don't need to check for Outbound security rules for the database security group Option D is invalid because you don't need to check for Inbound security rules for the application security group For more information on Security Groups, please refer to below URL:

The correct answer is: Check the Inbound security rules for the database security group Check the Outbound security rules for the application security group Submit your Feedback/Queries to our Experts

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asked 16/09/2024
Erik de Bont
39 questions
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