Amazon Web Services Updated SOA-C02 Exam Questions and Answers by reeva

To identify both tagged and untagged EC2 instances across multiple AWS Regions efficiently:

AWS Tag Editor: Tag Editor allows you to search for resources across your AWS account by tags, including both tagged and untagged resources.

Search Setup: In the Tag Editor, select all the Regions where the company operates. Specify the resource type as AWS::EC2::Instance to focus the search on EC2 instances.

View and Export Data: Execute the search to view all EC2 instances, along with their associated tags and instance IDs. This data can be exported for further analysis or reporting.

Using the Tag Editor is an operationally efficient way to quickly get a comprehensive view of resource tagging across multiple Regions, aiding in compliance and resource management tasks.

If users are unable to connect to a specific Ubuntu EC2 instance using AWS Systems Manager Session Manager while other instances are accessible, the issue is likely due to IAM permissions:

Instance Profile Permissions: Ensure that the EC2 instance has the necessary IAM permissions to interact with Systems Manager. The AmazonSSMManagedInstanceCore managed policy includes permissions required for the SSM Agent on the instance to communicate with the AWS Systems Manager service.

Attach Managed Policy: Attach the AmazonSSMManagedInstanceCore policy to the IAM role that is associated with the Ubuntu instance's instance profile. This step is crucial as it authorizes the instance to use Systems Manager services, including Session Manager.

Verify Configuration and Connectivity: After updating the instance profile, verify that users can connect via Session Manager. This solution does not require any changes to network security settings like security groups.

By ensuring that the instance has the appropriate IAM permissions, you resolve issues related to access control and Systems Manager functionality, allowing authorized personnel to connect securely without using SSH or RDP.

To ensure all objects in the S3 bucket are encrypted, including future objects, the following steps should be taken:

Enable Default Server-Side Encryption:

Edit the properties of the S3 bucket to enable default server-side encryption. This ensures that all new objects written to the bucket are encrypted by default.

Navigate to the S3 console, select the bucket, go to the "Properties" tab, and under "Default encryption", select the encryption method (SSE-S3, SSE-KMS, etc.).

To block traffic to a specific external IP address that has been identified as suspicious by GuardDuty, you should use a network ACL to add an outbound deny rule.

Create or Update Network ACL:

Open the Amazon VPC console at Amazon VPC Console.

Select Network ACLs in the navigation pane.

Create a new network ACL or select an existing one that is associated with the subnet containing the EC2 instance.

Add Outbound Deny Rule:

Choose Inbound Rules or Outbound Rules and then choose Edit rules.

Add a new rule to deny traffic to the specific external IP address.

Rule Number: Choose a rule number that is not used by another rule.

Type: All traffic or specific to the protocol and port.

Destination: The external IP address identified by GuardDuty.

Allow/Deny: Deny

Apply Changes:

Save the rule and ensure it is active.

Using a network ACL to block traffic at the subnet level provides an additional layer of security.

Network ACLs

Working with Network ACLs