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DOP-C02 · domain

Security and Compliance

Security and Compliance covers identity, encryption, and detection controls across AWS workloads: IAM policies and permission boundaries, KMS key policies and grants, Secrets Manager rotation, S3 encryption and TLS enforcement, WAF on ALB/CloudFront, and audit logging with CloudTrail, Config, and GuardDuty. Questions present a compliance requirement and ask which configuration or service satisfies it.

203 questions61 easy77 medium65 hard

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What this domain covers

What to know about Security and Compliance

Be able to pick the correct AWS control for a stated compliance requirement and write the policy or configuration that enforces it. The single most important thing: know which service owns each job, especially Secrets Manager for credential rotation and WAF for layer 7 attack filtering.

IAM policy evaluation, permission boundaries, and cross-account role trust with sts:AssumeRole

AWS WAF managed rule groups attached to ALB or CloudFront for SQLi and XSS filtering

Secrets Manager automatic rotation via Lambda versus SSM Parameter Store SecureString

S3 bucket policies denying aws:SecureTransport false, plus SSE-KMS with key policies and grants

Watch out for

Common Security and Compliance exam traps

  • ▸Assuming SSM Parameter Store rotates RDS credentials natively; rotation requires Secrets Manager with a Lambda rotation function.
  • ▸Attaching AWS WAF to the EC2 instances or security group instead of the ALB, CloudFront distribution, or API Gateway stage.
  • ▸Enforcing S3 encryption at rest but forgetting the bucket policy condition that rejects unencrypted-in-transit requests.

Question index

All Security and Compliance questions (203)

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1

A company uses AWS KMS to encrypt EBS volumes. The security team wants to ensure that EBS snapshots are shared with another account without exposing the underlying data. What is the correct approach?

Hard
2

A DevOps engineer needs to ensure that all API calls made to AWS are logged for compliance. The logs must be stored in S3 for at least 7 years. Which AWS service should they use?

Easy
3

A company wants to enforce that S3 buckets are not publicly accessible. Which AWS service can continuously monitor and automatically remediate non-compliant buckets?

Hard
4

A company uses AWS Secrets Manager to store database credentials for a legacy application running on an on-premises server. The application retrieves the secret via the AWS SDK. Recently, the database password was rotated in Secrets Manager, but the application continued to use the old password and failed to connect. The application code is correct and uses the latest SDK. The IAM role attached to the server has the secretsmanager:GetSecretValue permission. What is the MOST likely cause?

Easy
5

Which TWO actions can be taken to protect an S3 bucket from being publicly accessible? (Select TWO.)

Medium
6

Refer to the exhibit. The S3 bucket policy is applied to a bucket. An application attempts to upload an object to the bucket using HTTP (not HTTPS). What will happen?

Hard
7

A DevOps engineer manages a CI/CD pipeline that builds and deploys a containerized application to an Amazon ECS cluster. The pipeline runs on an EC2 instance and needs to retrieve a secret from AWS Secrets Manager to pass to the ECS task definition. The secret must not be stored on the instance or in the pipeline's code. The engineer wants to grant the pipeline the least privilege necessary to retrieve only that specific secret. Which approach should be taken?

Medium
8

Match each AWS security and identity service to its function.

Medium
9

A DevOps engineer needs to securely store and automatically rotate database credentials for a web application running on Amazon ECS. Which solution should be used?

Medium
10

Which THREE are features of AWS Key Management Service (KMS) that help with compliance requirements? (Choose 3)

Hard
11

A company wants to centralize IAM user management across multiple AWS accounts. The company currently uses individual IAM users in each account. What is the BEST practice for centralized access control?

Medium
12

A company is designing a secure CI/CD pipeline. Which TWO actions should be taken to protect secrets (e.g., API keys) used in the pipeline? (Choose TWO.)

Medium
13

A DevOps team is designing a CI/CD pipeline that deploys a web application on Amazon ECS. The application must be compliant with PCI DSS, which requires encryption of data at rest and in transit, and logging of all access. Which THREE actions should the team implement to meet these requirements? (Choose THREE.)

Hard
14

A company's security team notices that an IAM user has permissions to terminate EC2 instances but should only be allowed to stop them. The current policy allows ec2:TerminateInstances. What is the most secure way to prevent termination while allowing stop?

Hard
15

A DevOps engineer is designing a CI/CD pipeline that deploys to production. The security team mandates that all code changes must be reviewed and signed off by two senior developers before deployment. How can this be enforced?

Medium
16

Which TWO actions should a DevOps engineer take to secure an AWS account root user? (Choose 2.)

Medium
17

A company wants to centrally manage and audit access to AWS KMS keys across multiple accounts. Which AWS feature should be used?

Easy
18

A DevOps engineer needs to ensure that an S3 bucket policy enforces encryption in transit for all access. Which policy statement should be added?

Hard
19

A company is using AWS Secrets Manager to store database credentials for a multi-tier application. The application runs on EC2 instances in an Auto Scaling group. The DevOps engineer has configured the instances to retrieve the secret at boot time using a script that calls the AWS CLI. Recently, the security team discovered that the secret was exposed in the instance's user data logs. The engineer needs to implement a more secure method to access the secret without storing it in user data. The application code can be modified. The environment uses IAM roles for EC2. Which solution best meets the security requirements?

Medium
20

A DevOps engineer is configuring AWS Config rules to detect non-compliant security groups. The rule should trigger if any security group allows inbound SSH (port 22) from 0.0.0.0/0. Which AWS managed Config rule should be used?

Easy
21

A DevOps engineer needs to restrict access to an S3 bucket so that only users from a specific AWS account can read objects. Which TWO methods can achieve this?

Easy
22

A company uses AWS Secrets Manager to store database credentials. The security team needs to automatically rotate the secrets every 30 days. Which action should be taken?

Easy
23

A company uses AWS Organizations with multiple accounts. The security team requires that all newly created S3 buckets in any account automatically have default encryption enabled and block public access. Which solution is MOST operationally efficient?

Hard
24

A company is using AWS CloudFormation to deploy infrastructure. The security team wants to ensure that any changes to IAM roles must be reviewed and approved by a security engineer before deployment. The DevOps engineer needs to implement a gating mechanism. Which approach should the engineer use?

Hard
25

Which THREE are components of the AWS Shared Responsibility Model? (Choose THREE.)

Medium
26

An S3 bucket has the above bucket policy. What is the net effect on GetObject requests?

Medium
27

A DevOps engineer created the IAM policy shown in the exhibit and attached it to a user. The user tries to upload an object to my-bucket without specifying the ACL. Why does the upload fail?

Medium
28

A company uses AWS CodeBuild for CI/CD. The build project needs to access a private S3 bucket to download artifacts. What is the MOST secure way to grant access?

Easy
29

Which TWO are best practices for securing an Amazon RDS database? (Choose 2)

Easy
30

A DevOps engineer manages a CI/CD pipeline that builds Docker images and pushes them to Amazon ECR. The security team requires that every image be scanned for known vulnerabilities before deployment, and that the pipeline fail if any critical severity findings are detected. The engineer enables scan on push for the repository. Which additional step must be added to the pipeline to meet the requirement?

Medium
31

A company uses AWS Organizations to manage multiple accounts. The security team wants to ensure that no member account can disable AWS CloudTrail or delete CloudTrail logs. What is the most effective way to enforce this control?

Hard
32

A company is using AWS Lambda to process sensitive data. The security team requires that the Lambda function only be invoked from within a specific VPC and that the function's environment variables be encrypted at rest. Which TWO actions should the DevOps engineer take to meet these requirements?

Hard
33

A company wants to monitor and detect anomalous API calls in their AWS account. Which THREE AWS services should they use together to achieve this?

Hard
34

A DevOps engineer is designing an AWS Lambda function that needs to read secrets from AWS Secrets Manager. What is the most secure way to provide the Lambda function access to the secret?

Easy
35

A company has a multi-account AWS environment using AWS Organizations. The security team has implemented a service control policy (SCP) that denies the creation of IAM users and roles with full admin access. The SCP is attached to all accounts. However, a DevOps engineer in a member account reports that they are able to create an IAM role with an administrator access policy attached. The engineer uses the AWS Management Console to create the role. The SCP is confirmed to be in place. What is the most likely reason the SCP is not preventing the role creation?

Hard
36

A company hosts a web application on EC2 instances behind an Application Load Balancer. The application stores sensitive user data in an S3 bucket. A Security Engineer needs to ensure that the EC2 instances can only access the specific S3 bucket and no other AWS services. Which solution meets these requirements?

Medium
37

A company is using AWS Organizations with multiple accounts. The security team wants to enforce that all S3 buckets have encryption enabled. They need a preventive control that applies to all current and future accounts. Which approach should they use?

Hard
38

A company uses AWS CloudTrail to log all API calls across multiple accounts. The logs are stored in an S3 bucket in the management account. The security team wants to ensure that the logs are not tampered with and that any unauthorized modification is detected. The DevOps engineer has enabled CloudTrail log file integrity validation. The engineer also sets up an S3 lifecycle policy to transition logs to Glacier after 90 days. Additionally, the engineer enables S3 server access logging and sends the logs to a different bucket. A few months later, the security team suspects that some logs have been deleted. The engineer checks the CloudTrail digest files and finds that the latest digest file is missing. What is the most likely cause?

Easy
39

A company wants to encrypt data at rest in Amazon S3 using server-side encryption. Which AWS service can automatically manage the encryption keys with minimal configuration?

Easy
40

A company wants to protect its AWS account credentials. Which TWO practices are recommended by AWS? (Choose TWO.)

Easy
41

A company wants to automate the rotation of IAM user access keys every 90 days. Which AWS service can be used to achieve this?

Easy
42

Which TWO AWS services can be used to manage secrets and database credentials securely? (Choose TWO.)

Easy
43

A company is using AWS KMS to encrypt data at rest for S3 objects. The security team wants to rotate the KMS key annually. Which action should the team take to implement automatic key rotation?

Easy
44

A DevOps engineer receives an alert that an EC2 instance has been compromised. The instance is part of an Auto Scaling group. What is the first step the engineer should take to isolate the instance?

Medium
45

A company wants to encrypt data at rest in Amazon S3 using server-side encryption with AWS Key Management Service (SSE-KMS) and enforce that all new objects are encrypted. Which bucket policy statement should be added?

Easy
46

A security engineer is designing a secure VPC architecture for a web application. The application must be isolated from the internet and only accessible through a load balancer. Which TWO actions should the engineer take?

Medium
47

A company runs a web application on EC2 instances behind an Application Load Balancer (ALB). The security team requires that all traffic to the ALB must be encrypted (HTTPS) and that the ALB must only accept traffic from CloudFront. The DevOps engineer has configured CloudFront with an origin pointing to the ALB, and the ALB has a listener on port 443 with a valid SSL certificate. The engineer also added a security group rule to the ALB that allows HTTPS traffic only from CloudFront's IP ranges. However, users are reporting intermittent 503 errors. The engineer checks CloudFront logs and sees that some requests are failing with 'Origin Connect Error'. What is the most likely cause?

Medium
48

Which TWO actions are effective ways to protect an AWS account root user? (Choose 2)

Medium
49

A company has an AWS Lambda function that processes sensitive data. The function needs to access an RDS database with credentials stored in Secrets Manager. What is the MOST secure way to grant the Lambda function access to the secret?

Hard
50

The AWS Config rule 's3-bucket-ssl-requests-only' returns NON_COMPLIANT for the bucket 'my-bucket'. What does this mean?

Easy
51

A company wants to centralize audit logs from multiple AWS accounts into a single S3 bucket. The logs must be encrypted at rest using a KMS key. Which solution is the MOST secure and scalable?

Easy
52

A DevOps engineer needs to store secrets such as database passwords for a serverless application. Which AWS service is most appropriate?

Easy
53

Refer to the exhibit. A CloudTrail trail named ManagementTrail is configured as shown. Which events will be logged?

Medium
54

A company uses Amazon Inspector to scan EC2 instances for vulnerabilities. The security team discovers that a critical vulnerability is present on an instance, but the instance is part of an Auto Scaling group. What is the MOST efficient way to remediate this vulnerability while ensuring the Auto Scaling group remains operational?

Hard
55

Which TWO actions are best practices for securing an AWS account root user? (Select TWO.)

Medium
56

Refer to the exhibit. An IAM policy is attached to an IAM user. The user tries to download an object from the S3 bucket 'example-bucket' from an IP address of 10.1.2.3. What will happen?

Hard
57

A company is using AWS CodePipeline to deploy a web application across multiple AWS accounts using CloudFormation stack sets. The pipeline is in the tools account, and it deploys to production account. The security team requires that all CloudFormation changes to production account be reviewed and approved by a senior engineer. Which approach meets this requirement?

Hard
58

A security audit reveals that an IAM user has long-term access keys that have not been rotated in over 90 days. What is the most secure way to enforce key rotation?

Medium
59

A DevOps engineer needs to rotate database credentials stored in AWS Secrets Manager automatically every 30 days. What is the simplest way to achieve this?

Easy
60

A DevOps engineer needs to securely store database credentials for an application running on Amazon ECS. Which AWS service should be used to manage the credentials and provide them to the ECS tasks?

Easy
61

A company needs to store audit logs for 7 years to meet compliance requirements. Which S3 storage class is the most cost-effective for long-term archival?

Medium
62

A company wants to centralize logging of all API calls made within their AWS account for auditing. Which service should they use?

Easy
63

An organization has a compliance requirement to automatically detect and alert on any IAM user creation in all AWS accounts. Which combination of services should be used to meet this requirement?

Medium
64

A company uses AWS KMS to encrypt data in S3. They want to audit who used which KMS key and when. Which AWS service should they use?

Easy
65

A company wants to automate the rotation of IAM user access keys every 90 days. Which AWS service should be used to implement this rotation?

Medium
66

A DevOps engineer needs to grant cross-account access to an S3 bucket in Account A for a user in Account B. Which combination of policies is required?

Easy
67

A company is using Amazon S3 to store sensitive data. The security team mandates that all data must be encrypted at rest using server-side encryption with AWS Key Management Service (SSE-KMS). The DevOps engineer must ensure that any new objects uploaded to the bucket are automatically encrypted. What should the engineer do?

Easy
68

A company is running a critical application on an Amazon EC2 instance that needs to access an S3 bucket. The application must use temporary credentials that automatically rotate. The DevOps engineer must ensure that the credentials are never stored on disk. Which approach meets these requirements?

Hard
69

Which TWO of the following are benefits of using AWS Certificate Manager (ACM) to manage SSL/TLS certificates? (Choose two.)

Medium
70

A company is using AWS CloudTrail to log API calls. The security team needs to ensure that log files are tamper-proof and can be used to verify integrity. Which feature should be enabled?

Medium
71

A company uses AWS Organizations with SCPs to enforce security policies. The security team needs to ensure that no IAM user or role can disable AWS CloudTrail or delete CloudTrail logs. Which TWO approaches should be combined to achieve this? (Choose TWO.)

Medium
72

A company uses AWS Organizations with multiple accounts. The security team needs to enforce that all new member accounts automatically receive a specific AWS Config rule to require encryption on Amazon EBS volumes. Which solution meets this requirement with the least operational overhead?

Easy
73

A company has a multi-account AWS environment using AWS Organizations. They want to centrally manage user access to all accounts using single sign-on (SSO) and enforce multi-factor authentication (MFA). Which service should they use?

Medium
74

A DevOps team is deploying a multi-tier application on AWS. The application must comply with PCI DSS. Which combination of services should be used to encrypt data in transit between the web tier and the application tier?

Hard
75

A DevOps engineer executed the CLI command shown in the exhibit. After creation, the security team requires that the log files be encrypted with a KMS key that is rotated every 90 days. The current key is a customer managed key with automatic rotation enabled set to 365 days. What should the engineer do to meet the requirement?

Hard
76

A company wants to securely store database credentials used by an application running on Amazon EC2. The credentials should be automatically rotated every 90 days. Which AWS service should be used?

Easy
77

A company requires that all secrets (e.g., database passwords) used by Lambda functions be rotated automatically every 30 days. Which combination of services should be used?

Hard
78

A company wants to enable AWS CloudTrail to log all API calls across multiple accounts in AWS Organizations. The security team requires that logs be encrypted at rest and that any unauthorized deletion of log files be prevented. Which TWO actions should the security team take? (Choose TWO.)

Easy
79

A company's security policy requires that all data stored in Amazon S3 must be encrypted at rest using server-side encryption with customer-managed keys (SSE-KMS). When uploading an object via the AWS CLI, which parameter must be included to enforce this?

Medium
80

A DevOps engineer is responsible for securing a containerized application running on Amazon ECS with the Fargate launch type. The application needs to access an Amazon RDS database and an Amazon S3 bucket. The security team requires that credentials are not hardcoded and that access is least privilege. Which two actions should the engineer take to meet these requirements? (Choose two.)

Medium
81

A company wants to centrally manage and apply policies across multiple AWS accounts in an AWS Organization. Which service should be used to define and enforce compliance rules?

Easy
82

A DevOps engineer is troubleshooting a failed CodeBuild project. The build fails with an error: 'Access Denied: Unable to put object to S3.' The build project has an S3 bucket as the artifact store. What should the engineer do to resolve this issue?

Medium
83

A DevOps engineer needs to allow an AWS Lambda function to write logs to Amazon CloudWatch Logs. What should the engineer do?

Easy
84

An organization needs to audit all AWS API calls made in their account for compliance purposes. Which AWS service should they enable?

Easy
85

A company uses AWS CodePipeline for CI/CD. The security team requires that all code changes be scanned for secrets before deployment. The pipeline consists of a source stage (CodeCommit), a build stage (CodeBuild), and a deploy stage (CodeDeploy). The security team wants to automatically scan for secrets and block the pipeline if any secrets are found. Which THREE actions should the team take? (Choose THREE.)

Medium
86

A DevOps engineer is designing a CI/CD pipeline that deploys code to an EC2 instance. The engineer needs to securely store and retrieve database credentials used by the application. Which AWS service should be used?

Easy
87

A DevOps engineer manages a fleet of EC2 instances in a private subnet. The instances must access an Amazon S3 bucket to read configuration files. The security team requires that all traffic to S3 be encrypted in transit and that the EC2 instances do not use the public internet. The engineer has already created an S3 gateway endpoint and attached it to the VPC route table. Which additional step should the engineer take to meet these requirements?

Medium
88

A company wants to audit all changes to IAM policies in their AWS account. Which THREE services can be used to capture and alert on IAM policy changes? (Choose THREE.)

Medium
89

A company runs a web application on EC2 behind an Application Load Balancer (ALB). They want to protect against SQL injection and cross-site scripting (XSS) attacks. Which AWS service should they use?

Hard
90

Which THREE components are necessary to implement a secure VPC with a public subnet and a private subnet that hosts a database? (Choose THREE.)

Hard
91

A company wants to ensure that all S3 buckets are encrypted at rest by default. Which S3 feature should be enabled at the bucket level to automatically encrypt new objects?

Easy
92

A company uses AWS Secrets Manager to store database credentials. The security team requires that secrets be automatically rotated every 30 days. Which rotation strategy should the engineer configure to meet this requirement with minimal operational overhead?

Medium
93

A DevOps team needs to enforce that all S3 buckets in an AWS account are encrypted at rest. Which THREE steps should be taken to achieve this? (Choose THREE.)

Hard
94

A company needs to audit all changes to IAM policies in their AWS account. Which services can be used to track and log these changes? (Select TWO.)

Medium
95

A company needs to enforce that all EC2 instances launched in an AWS account use a specific Amazon Machine Image (AMI) that is approved by the security team. Which combination of services should be used?

Hard
96

A company needs to ensure that all API calls made to AWS are encrypted in transit. Which of the following is the correct way to enforce this?

Easy
97

A company has a security policy requiring that all IAM users use multi-factor authentication (MFA) to access the AWS Management Console. The DevOps engineer needs to enforce this policy. What is the simplest way to achieve this?

Easy
98

A DevOps engineer is designing a secure CI/CD pipeline. Which TWO of the following are best practices for securing secrets in the pipeline?

Medium
99

A company is using AWS KMS to encrypt data. Which TWO statements about AWS KMS key rotation are correct? (Choose TWO.)

Easy
100

Which THREE services can be used to protect a VPC from malicious traffic? (Choose 3.)

Hard
101

An organization wants to enforce that all Amazon S3 buckets are encrypted with SSE-S3. Which AWS service can be used to automatically remediate non-compliant buckets?

Hard
102

A company's security policy requires that all data in transit between on-premises and AWS is encrypted. Which AWS service provides a dedicated network connection with encryption?

Hard
103

A company wants to implement a least-privilege security model for its IAM users. Which TWO practices should be applied?

Medium
104

A DevOps engineer needs to ensure that all API calls made to AWS services are logged for auditing purposes. Which AWS service should be enabled?

Easy
105

A company runs a web application on EC2 instances behind an Application Load Balancer (ALB). The security team wants to protect the application from common web exploits like SQL injection and cross-site scripting. Which AWS service should be used?

Easy
106

A company is using AWS CloudFormation to deploy infrastructure. They need to ensure that all resources created by CloudFormation are tagged with a 'CostCenter' tag. The tag must be applied automatically to all resources in the stack. What should they do?

Hard
107

A company uses AWS Organizations to manage multiple accounts. The Security team wants to prevent member accounts from disabling AWS CloudTrail or deleting CloudTrail log files. Which TWO actions should the Security team take in the organization's management account? (Choose TWO.)

Medium
108

A company uses Amazon Inspector to assess the security of EC2 instances. The security team receives an alert that a high-severity vulnerability (CVE-2023-XXXX) was found on an EC2 instance running a critical application. The application is behind an Application Load Balancer (ALB) and uses an Auto Scaling group. The vulnerability has a known patch, but patching requires a reboot. The security team needs to remediate the vulnerability with minimal downtime. Which approach should the team take?

Medium
109

A DevOps engineer is designing a CI/CD pipeline using AWS CodePipeline. The pipeline deploys a critical application. Which security practice should the engineer implement to prevent unauthorized changes to the pipeline?

Medium
110

Which TWO AWS services can be used to centrally manage and enforce security policies across multiple accounts? (Choose 2.)

Easy
111

A company needs to enforce that all IAM users must use multi-factor authentication (MFA) to perform any AWS Console actions. Which TWO steps should be taken to enforce this?

Hard
112

Which THREE AWS services can be used to centrally manage and enforce security policies across multiple accounts in AWS Organizations? (Select THREE.)

Hard
113

Which TWO measures can be taken to protect data at rest in Amazon S3? (Select TWO.)

Easy
114

A DevOps engineer is configuring AWS CloudTrail to log all management events across all regions. The engineer wants to ensure that log files are encrypted at rest using a customer-managed KMS key. What is the correct way to achieve this?

Easy
115

A company uses a centralized AWS KMS customer master key (CMK) in the security account to encrypt data in S3 buckets across multiple accounts. The S3 buckets are accessed by EC2 instances in the same accounts. The security team wants to ensure that the CMK can only be used by authorized IAM roles in the member accounts. Which policy configuration should be used?

Hard
116

Refer to the exhibit. A security engineer sees this CloudTrail event. What action did the user 'admin' perform?

Medium
117

A company uses AWS Organizations with 20 accounts. The Security team has configured AWS CloudTrail to deliver logs from all accounts to a central S3 bucket (central-bucket). The bucket policy allows CloudTrail to write objects and uses SSE-S3 encryption. Recently, auditors found that some log files were missing for a few hours. The CloudTrail console shows that trails are enabled in all accounts. The central-bucket has default encryption enabled. What is the MOST likely cause of the missing logs?

Hard
118

A financial services company is migrating its applications to AWS. The compliance team requires that all Amazon S3 buckets containing personally identifiable information (PII) must have server-side encryption enabled and block public access. The DevOps team discovers that some S3 buckets are not compliant. Which TWO actions should the team take to enforce these requirements automatically for all current and future buckets? (Select TWO.)

Medium
119

A company uses AWS Lambda functions to process sensitive data from an SQS queue. The Lambda function writes results to an S3 bucket. The security team requires that all data at rest in S3 be encrypted with a customer managed KMS key, and that the Lambda function only have access to decrypt the queue messages and encrypt the S3 objects. An IAM role is attached to the Lambda function. The engineer has configured the KMS key policy to allow the Lambda role to use the key. However, the Lambda function fails to write to S3 with a 'KMS access denied' error. The engineer verified that the S3 bucket has default encryption enabled with the same KMS key. Which additional step is most likely required?

Medium
120

A company uses Amazon RDS for MySQL with Multi-AZ deployment. The security team requires that all data be encrypted at rest and that automated backups are also encrypted. Which configuration meets these requirements?

Medium
121

A company has a multi-account AWS environment using AWS Organizations. The security team wants to enforce that all S3 buckets across accounts are encrypted with AWS KMS. Which combination of controls should be used to enforce this?

Hard
122

Given the above AWS CLI command output, which actions are allowed for the specified policy?

Hard
123

A company uses AWS CodePipeline to deploy applications. The pipeline must deploy to an Amazon ECS cluster. The security team requires that all deployment actions be logged and auditable. Which configuration should be used?

Medium
124

A company runs a critical application on EC2 instances behind an Application Load Balancer (ALB). The security team wants to block traffic from known malicious IP addresses before it reaches the ALB. What is the MOST effective approach?

Hard
125

A DevOps engineer needs to store database credentials for an application running on Amazon ECS. The credentials must be automatically rotated every 30 days and encrypted at rest. Which solution meets these requirements with the LEAST operational overhead?

Medium
126

An application running on EC2 needs to access an S3 bucket. To follow the principle of least privilege, what is the recommended approach?

Easy
127

A company is using AWS CloudTrail to log API events. The security team wants to ensure that log files are tamper-proof and available for incident investigation. Which TWO actions should be taken? (Choose TWO.)

Medium
128

A DevOps engineer needs to ensure that EC2 instances can access an S3 bucket without storing AWS credentials on the instances. Which solution meets this requirement?

Medium
129

A company is migrating to AWS and has a requirement to encrypt all data at rest and in transit. They are using AWS KMS with Customer Master Keys (CMKs) for encryption. The DevOps engineer has set up an S3 bucket with default encryption using SSE-KMS. The bucket policy allows access only to a specific IAM role. The engineer also enabled S3 bucket versioning and MFA Delete. However, when the engineer tries to download an object using the AWS CLI with the IAM role, the command fails with 'AccessDenied'. The IAM role has the following permissions: s3:GetObject, s3:ListBucket, kms:Decrypt, kms:DescribeKey. What is the most likely missing permission?

Hard
130

A company is using AWS Secrets Manager to rotate database credentials automatically. The DevOps engineer needs to ensure that the rotation process is secure and does not cause downtime. Which THREE steps should the engineer take?

Medium
131

An organization wants to grant cross-account access to an S3 bucket in Account A to a user in Account B. Which policy configuration is required?

Easy
132

A DevOps engineer needs to enforce encryption in transit for all traffic between a fleet of EC2 instances and an Application Load Balancer (ALB). The ALB is configured with a TLS listener. Which step should the engineer take to ensure end-to-end encryption?

Medium
133

A company uses AWS Secrets Manager to store database credentials. The security team wants to automatically rotate secrets every 30 days. The database is an Amazon RDS for PostgreSQL instance. The team has configured automatic rotation with a Lambda function that updates the password in RDS and Secrets Manager. However, after the first rotation, the application starts getting database connection errors. The application uses a connection string with the secret ARN and retrieves the secret from Secrets Manager at startup using the AWS SDK. Which of the following is the most likely cause of the connection errors?

Easy
134

A company uses AWS Key Management Service (KMS) to encrypt data at rest in Amazon S3. The security team wants to ensure that only users with a specific attribute in their SAML assertion can decrypt the data. Which KMS key policy should be used?

Medium
135

A company uses AWS WAF to protect a web application behind an Application Load Balancer. The security team notices an increase in false positives blocking legitimate traffic. Which action should be taken to reduce false positives while maintaining security?

Medium
136

A DevOps engineer is tasked with auditing all AWS API calls made in the account for compliance purposes. The engineer needs to ensure that the audit logs are tamper-proof and stored cost-effectively. Which TWO services should the engineer use?

Easy
137

A company is designing a secure CI/CD pipeline using AWS CodePipeline, CodeBuild, and CodeDeploy. The pipeline must deploy to an EC2 Auto Scaling group across multiple AWS accounts. The security requirements include: (1) no hardcoded credentials, (2) least privilege for cross-account access, (3) encrypted artifacts. Which THREE steps should the DevOps engineer implement? (Choose THREE.)

Hard
138

Refer to the exhibit. An IAM policy is attached to a user. The user requests an object from the 'example-bucket' bucket, specifically from the 'confidential' folder, over HTTP (not HTTPS). The source IP is within the 10.0.0.0/24 range. What will be the result of this request?

Hard
139

A company has a VPC with public and private subnets. An EC2 instance in the private subnet needs to download patches from the internet but must not be directly accessible from the internet. Which configuration allows this?

Hard
140

A DevOps engineer needs to securely store and automatically rotate database credentials for a MySQL RDS instance. The credentials should be accessible to a Lambda function without hardcoding them. Which AWS service should be used?

Easy
141

Which THREE of the following are valid methods to enforce encryption at rest for Amazon EBS volumes? (Choose three.)

Hard
142

A company has a requirement to store audit logs for 7 years. The logs are currently stored in Amazon S3 and are accessed infrequently. Which storage class provides the lowest cost while meeting the retention requirement?

Hard
143

A DevOps team is deploying a web application on EC2 instances behind an ALB. The application must authenticate users using an external identity provider (IdP) that supports SAML 2.0. Which solution provides the simplest integration with the ALB?

Medium
144

A DevOps team is designing a solution to encrypt data at rest for an Amazon RDS for MySQL database. Which TWO actions should the team take? (Choose TWO.)

Hard
145

A security audit reveals that an S3 bucket contains objects that are not encrypted. The bucket is configured with default encryption using SSE-S3. What is the most likely reason that objects are unencrypted?

Medium
146

A company has an Amazon RDS for MySQL database that stores sensitive data. The security team requires encryption at rest and in transit. Which combination of options meets these requirements?

Easy
147

Which TWO actions can be taken to secure an Amazon S3 bucket that contains confidential data? (Choose TWO.)

Medium
148

Refer to the exhibit. A security engineer finds this CloudTrail log entry. What is the most likely security concern?

Medium
149

A company is using AWS CodeBuild as part of its CI/CD pipeline. The build projects need to access a private Amazon ECR repository to pull Docker images. What is the MOST secure way to grant CodeBuild access to ECR?

Medium
150

A company's security team requires that all API calls to AWS are logged for audit purposes. Which service should be enabled to capture and store these logs?

Medium
151

An organization uses AWS Key Management Service (KMS) with customer-managed keys. The security policy requires automatic key rotation every year. A DevOps engineer notices that the key material is not rotating as expected. What is the most likely cause?

Hard
152

A company stores sensitive customer data in an S3 bucket. The security team requires that all data be encrypted at rest using customer-managed KMS keys. Additionally, any attempt to upload an unencrypted object must be denied. Which S3 bucket policy should be used?

Medium
153

A company is migrating to AWS and needs to comply with PCI DSS. They must encrypt all data at rest and in transit. Which THREE services or features should they use?

Hard
154

A DevOps engineer is designing a CI/CD pipeline for a microservices application. The pipeline must scan container images for vulnerabilities before deploying to Amazon ECS. Which service should the engineer use to perform the vulnerability scan?

Medium
155

A company is deploying a multi-tier application on AWS. The web tier must be publicly accessible, but the application tier must only be accessible from the web tier. The database tier should not be accessible from the internet at all. Which combination of security groups and network ACLs should be used?

Hard
156

A DevOps engineer is tasked with encrypting data at rest for an Amazon RDS for MySQL database. Which TWO methods can achieve this?

Medium
157

A company uses AWS Organizations with SCPs to restrict access to services. The security team needs to ensure that no IAM user or role in any account can create or modify VPCs. Which SCP should be applied to the root OU?

Medium
158

A DevOps engineer needs to securely store database credentials for an application running on EC2. The credentials must be rotated automatically every 30 days. Which solution meets these requirements?

Medium
159

A company runs a containerized application on Amazon ECS with Fargate. The application needs to access an S3 bucket. The Security team requires that the application never uses long-term credentials and that access is scoped to the specific ECS task. Which approach should be used?

Hard
160

A company uses AWS CodeBuild to build and test code. The build process needs to access a private Amazon RDS database to run integration tests. What is the most secure way to provide database credentials to the build project?

Medium
161

A company uses AWS Secrets Manager to rotate secrets for an RDS database. The rotation Lambda function fails with a timeout error. What is the most likely cause?

Medium
162

A DevOps engineer is troubleshooting an issue where an EC2 instance cannot access an S3 bucket. The instance has an IAM role attached with a policy that allows s3:GetObject. The S3 bucket policy explicitly denies access to the instance's role. What is the result?

Medium
163

A company has a multi-account AWS environment managed by AWS Organizations. The DevOps team uses AWS CloudFormation StackSets to deploy a standard VPC across all member accounts. The security team has noticed that in some accounts, the VPC is being modified after deployment, allowing inbound SSH access from the internet. The team wants to automatically detect and remediate these changes. The current setup includes: AWS Config enabled in all accounts with a rule that checks for unrestricted SSH access; an SNS topic in the management account that receives compliance change notifications; and a Lambda function in the management account that can remediate by updating the security group rules. However, the remediation is not working consistently. What is the most likely reason, and what is the best solution?

Hard
164

An S3 bucket has the above bucket policy. What is the effect of this policy?

Medium
165

Refer to the exhibit. A DevOps engineer created an IAM role 'MyLambdaRole' for a Lambda function. The Lambda function needs to write logs to CloudWatch Logs. However, the function is not able to create log streams. What is the most likely missing configuration?

Medium
166

A company uses AWS CodePipeline to deploy a web application to an Auto Scaling group. The security team requires that all artifacts in the pipeline be encrypted at rest. The pipeline uses an S3 bucket as the artifact store. Which combination of actions should the DevOps engineer take to meet this requirement with minimal operational overhead?

Hard
167

A developer wants to grant an EC2 instance read-only access to a specific S3 bucket. Which AWS mechanism should they use to securely provide credentials to the instance?

Easy
168

A company wants to automatically detect and respond to suspicious activity in their AWS account. Which service should be used to generate alerts based on threat intelligence?

Easy
169

Which TWO AWS services can be used to monitor and detect unauthorized access to AWS resources? (Choose two.)

Medium
170

A company wants to centrally manage user access to multiple AWS accounts using federated identity. Which AWS service should be used to create a single sign-on (SSO) solution?

Easy
171

A company's Security team wants to detect and alert on the creation of IAM users with console access. Which THREE services should be used?

Hard
172

A DevOps engineer manages a build account where CodeBuild projects run in a VPC to reach an internal artifact repository. The projects must pull a database password from AWS Secrets Manager at build time. The build role's IAM policy already grants secretsmanager:GetSecretValue on the secret ARN, but every build fails with a connection timeout when the AWS CLI attempts the call. The VPC has private subnets, a NAT gateway, and a VPC endpoint for Amazon S3 only. What is the MOST operationally efficient change that lets the builds retrieve the secret while keeping the traffic off the public internet?

Hard
173

A company uses AWS Secrets Manager to rotate database credentials automatically. The rotation is configured to occur every 30 days. The DevOps engineer notices that the latest secret version is not being used by the application after rotation. The application is an EC2 instance that retrieves the secret using the AWS SDK. The engineer checks the secret and sees that the rotation succeeded and the new version is marked as 'AWSCURRENT'. The EC2 instance role has permissions to retrieve the secret. What is the most likely reason the application is still using the old secret?

Easy
174

Which TWO AWS services can be used to monitor for unauthorized API calls in an AWS account? (Choose two.)

Easy
175

Refer to the exhibit. This S3 bucket policy allows the root user of account 111122223333 to perform which actions?

Easy
176

A company has a requirement to rotate database credentials every 30 days for an Amazon RDS for MySQL instance. The credentials are currently stored in AWS Secrets Manager. The DevOps engineer needs to implement automatic rotation without modifying the application code. Which solution should be used?

Hard
177

A DevOps engineer needs to ensure that all API calls made to AWS are recorded for auditing purposes. Which AWS service should be used?

Easy
178

A company uses AWS KMS to encrypt data in S3. The security team requires that the key material be rotated every 90 days. What should be done to meet this requirement?

Medium
179

A company wants to automate patching of EC2 instances running Amazon Linux 2 while ensuring compliance with security policies. Which AWS service should be used?

Easy
180

Which THREE measures can be taken to ensure that EC2 instances are compliant with a security policy that requires all instances to be in a VPC with specific tags? (Select THREE.)

Hard
181

A company uses AWS Organizations with multiple accounts. The security team wants to restrict the use of specific instance types across all accounts to reduce costs and enforce compliance. Which approach should be used?

Hard
182

A company runs a critical application on EC2 instances behind an Application Load Balancer (ALB). They want to protect against SQL injection and cross-site scripting attacks. Which AWS service should be integrated with the ALB?

Hard
183

Which TWO actions should a DevOps engineer take to prevent an S3 bucket from being publicly accessible? (Choose two.)

Medium
184

Which TWO actions should a DevOps engineer take to secure a web application running on EC2 instances behind an Application Load Balancer? (Choose two.)

Medium
185

A DevOps engineer is troubleshooting a failed AWS CodeBuild project. The build fails with an error indicating that the IAM role does not have permission to describe Amazon ECR repositories. The role used by CodeBuild has the following policy attached: {"Version":"2012-10-17","Statement":[{"Effect":"Allow","Action":["ecr:GetAuthorizationToken","ecr:BatchCheckLayerAvailability","ecr:GetDownloadUrlForLayer","ecr:BatchGetImage"],"Resource":"*"}]}. What is the missing permission?

Hard
186

A company uses AWS CodePipeline to deploy a web application. The pipeline uses artifacts stored in an S3 bucket. The Security team requires that all artifacts be encrypted in transit and at rest, and that the pipeline only access the bucket using a specific VPC endpoint. Which configuration meets these requirements?

Hard
187

A company wants to ensure that all API calls made within its AWS account are logged for auditing purposes. Which AWS service should be enabled to meet this requirement?

Easy
188

A company requires that all access to their S3 buckets be encrypted in transit. Which configuration achieves this?

Medium
189

A company uses AWS Secrets Manager to rotate secrets for an RDS database. The rotation Lambda function fails with a timeout error. Which configuration change is MOST likely to resolve the issue?

Hard
190

A company has a Lambda function that processes sensitive data and needs to access an RDS database. The security team requires that the database credentials are automatically rotated every 30 days. Which service should be used to store and rotate the credentials?

Hard
191

Drag and drop the steps to set up an AWS CloudFormation stack with a nested stack.

Medium
192

A DevOps engineer is configuring AWS CodeBuild to build a project that requires access to an Amazon RDS database password stored in AWS Secrets Manager. The build must not expose the password in logs or environment variables. Which approach should the engineer use?

Medium
193

A company runs a web application on Amazon ECS with Fargate launch type behind an Application Load Balancer (ALB). The application uses an RDS MySQL database. The security team performed a penetration test and discovered that the application is vulnerable to SQL injection. The development team has deployed a WAF web ACL to the ALB that includes rules to block SQL injection attacks. However, after the deployment, the application started returning 403 errors for legitimate requests, and the security team needs to investigate. The team also wants to ensure that only approved AWS services can access the RDS database. The current security groups are configured with a rule that allows inbound traffic from the ALB security group to the RDS database on port 3306. Which combination of actions should the security team take to resolve the issue and improve the security posture?

Hard
194

A company needs to ensure that an EC2 instance can only be launched using a specific Amazon Machine Image (AMI) that has been approved by the security team. Which TWO actions should be taken?

Medium
195

A company's security team suspects that an attacker has compromised an IAM user's access keys. The keys were used to launch instances in an unauthorized region. What is the FASTEST way to mitigate the threat?

Hard
196

A company uses AWS CodePipeline to deploy applications to AWS Lambda. The pipeline's source stage is connected to an AWS CodeCommit repository. The security team requires that all code changes are reviewed and approved by at least one team member before deployment. The team wants to automate the approval process as much as possible. Which solution should a DevOps engineer implement?

Hard
197

A DevOps engineer must ensure that all API calls in an AWS account are logged for compliance. The logs should be stored in an S3 bucket with server-side encryption enabled. Which two services should be used together to meet these requirements?

Easy
198

A company has a VPC with public and private subnets. They launch an EC2 instance in a private subnet that needs to download patches from the internet. Which solution is MOST secure and scalable?

Hard
199

A developer needs to allow an EC2 instance to read from an S3 bucket. Which is the most secure way to grant this access?

Easy
200

A company needs to audit all changes to security groups in a multi-account environment. The logs must be centrally stored and immutable. Which solution meets these requirements with minimal operational overhead?

Hard
201

Which TWO actions can help protect an AWS account's root user? (Choose TWO.)

Easy
202

A DevOps engineer needs to grant an IAM user temporary access to an S3 bucket for exactly one hour. Which AWS service should be used to generate temporary credentials?

Easy
203

A company is using Amazon RDS for MySQL and needs to encrypt the database at rest. Which action should be taken to enable encryption?

Easy

Frequently asked questions

What does the Security and Compliance domain cover on the DOP-C02 exam?
Be able to pick the correct AWS control for a stated compliance requirement and write the policy or configuration that enforces it. The single most important thing: know which service owns each job, especially Secrets Manager for credential rotation and WAF for layer 7 attack filtering.
How many questions are in this domain?
This page lists all 203 Security and Compliance questions in the DOP-C02 question bank. The actual exam draws from this domain proportionally to its weighting in the official exam blueprint.
What is the best way to practise this domain?
Start with a short focused session (10 questions) to identify gaps, then work through explanations. Repeat with a longer session once the weak areas feel solid.
Can I practise only Security and Compliance questions?
Yes — the session launcher on this page filters questions to this domain only. Choose any session length for inline explanations and scoring.
aws-devops-professional AWS-DEVOPS-PROFESSIONAL security compliance Practice Questions