Amazon SCS-C01 Practice Test - Questions Answers, Page 14
List of questions
Question 131

A water utility company uses a number of Amazon EC2 instances to manage updates to a fleet of 2,000 Internet of Things (IoT) field devices that monitor water quality. These devices each have unique access credentials. An operational safety policy requires that access to specific credentials is independently auditable. What is the MOST cost-effective way to manage the storage of credentials?
Explanation:
https://docs.aws.amazon.com/systems-manager/latest/userguide/parameter-store-advancedparameters.html
Question 132

An organization is using Amazon CloudWatch Logs with agents deployed on its Linux Amazon EC2 instances. The agent configuration files have been checked and the application log files to be pushed are configured correctly. A review has identified that logging from specific instances is missing.
Which steps should be taken to troubleshoot the issue? (Choose two.)
Explanation:
EC2 run command - can run scripts, install software, collect metrics and log files, manage patches and more. Bringing these two services together - can create CloudWatch Events rules that use EC2 Run Command to perform actions on EC2 instances or on-premises servers.
Question 133

A Security Engineer must design a solution that enables the Incident Response team to audit for changes to a user’s IAM permissions in the case of a security incident. How can this be accomplished?
Explanation:
https://aws.amazon.com/blogs/security/how-to-record-and-govern-your-iam-resourceconfigurations-using-aws-config/
Question 134

A company has complex connectivity rules governing ingress, egress, and communications between Amazon EC2 instances. The rules are so complex that they cannot be implemented within the limits of the maximum number of security groups and network access control lists (network ACLs).
What mechanism will allow the company to implement all required network rules without incurring additional cost?
Question 135

An IAM user with fill EC2 permissions could bot start an Amazon EC2 instance after it was stopped for a maintenance task. Upon starting the instance, the instance state would change to “Pending”, but after a few seconds, it would switch back to “Stopped”.
An inspection revealed that the instance has attached Amazon EBS volumes that were encrypted by using a Customer Master Key (CMK). When these encrypted volumes were detached, the IAM user was able to start the EC2 instances. The IAM user policy is as follows:
What additional items need to be added to the IAM user policy? (Choose two.)
Explanation:
The EBS which is AWS resource service is encrypted with CMK and to allow EC2 to decrypt , the IAM user should create a grant ( action) and a boolean condition for the AWs resource . This link explains how AWS keys works. https:// docs.aws.amazon.com/kms/latest/developerguide/key-policies.html
Question 136

A Security Administrator has a website hosted in Amazon S3. The Administrator has been given the following requirements:
Users may access the website by using an Amazon CloudFront distribution.
Users may not access the website directly by using an Amazon S3 URL.
Which configurations will support these requirements? (Choose two.)
Question 137

A Security Engineer has created an Amazon CloudWatch event that invokes an AWS Lambda function daily. The Lambda function runs an Amazon Athena query that checks AWS CloudTrail logs in Amazon S3 to detect whether any IAM user accounts or credentials have been created in the past 30 days.
The results of the Athena query are created in the same S3 bucket. The Engineer runs a test execution of the Lambda function via the AWS Console, and the function runs successfully. After several minutes, the Engineer finds that his Athena query has failed with the error message:
“Insufficient Permissions”. The IAM permissions of the Security Engineer and the Lambda function are shown below:
Security Engineer
Lambda function execution role
What is causing the error?
Question 138

A company requires that IP packet data be inspected for invalid or malicious content.
Which of the following approaches achieve this requirement? (Choose two.)
Explanation:
“EC2 Instance IDS/IPS solutions offer key features to help protect your EC2 instances. This includes alerting administrators of malicious activity and policy violations, as well as identifying and taking action against attacks. You can use AWS services and third party IDS/IPS solutions offered in AWS Marketplace to stay one step ahead of potential attackers.”
Question 139

An organization has a system in AWS that allows a large number of remote workers to submit data files. File sizes vary from a few kilobytes to several megabytes. A recent audit highlighted a concern that data files are not encrypted while in transit over untrusted networks.
Which solution would remediate the audit finding while minimizing the effort required?
Question 140

Which option for the use of the AWS Key Management Service (KMS) supports key management best practices that focus on minimizing the potential scope of data exposed by a possible future key compromise?
Explanation:
"automatic key rotation has no effect on the data that the CMK protects. It does not rotate the data keys that the CMK generated or re-encrypt any data protected by the CMK, and it will not mitigate the effect of a compromised data key. You might decide to create a new CMK and use it in place of the original CMK. This has the same effect as rotating the key material in an existing CMK, so it's often thought of as manually rotating the key." https://docs.aws.amazon.com/kms/latest/developerguide/rotate-keys.html
https://docs.aws.amazon.com/kms/latest/developerguide/rotate-keys.html#rotate-keys-manuallyfor AWS standards
Question