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SCS-C02 Amazon Web Services AWS Certified Security - Specialty Free Practice Exam Questions (2025 Updated)

Prepare effectively for your Amazon Web Services SCS-C02 AWS Certified Security - Specialty certification with our extensive collection of free, high-quality practice questions. Each question is designed to mirror the actual exam format and objectives, complete with comprehensive answers and detailed explanations. Our materials are regularly updated for 2025, ensuring you have the most current resources to build confidence and succeed on your first attempt.

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Total 417 questions

A company uses HTTP Live Streaming (HL'S) to stream live video content to paying subscribers by using Amazon CloudFront. HLS splits the video content into chunks sothat the user can request the right chunk based on different conditions. Because the video events last for several hours, the total video is made up of thousands of chunks.

The origin URL is not disclosed, and every user is forced to access the CloudFront URL. The company has a web application that authenticates the paying users against aninternal repository and a CloudFront key pair that is already issued.

What is the simplest and MOST effective way to protect the content?

A.

Develop the application to use the CloudFront key pair to create signed URLs that users will use to access the content.

B.

Develop the application to use the CloudFront key pair to set the signed cookies that users will use to access the content.

C.

Develop the application to issue a security token that Lambda@Edge will receive to authenticate and authorize access to the content

D.

Keep the CloudFront URL encrypted inside the application, and use AWS KMS to resolve the URL on-the-fly after the user is authenticated.

A company runs a cuslom online gaming application. The company uses Amazon Cognito for user authentication and authorization.

A security engineer wants to use AWS to implement fine-grained authorization on resources in the custom application. The security engineer must implement a solution that uses the user attributes that exist in Cognito. The company has already set up a user pool and an identity pool in Cognito.

Which solution will meet these requirements?

A.

Create a set of 1AM roles and 1AM policies Configure the Cognito identity pool to assign users to the 1AM roles.

B.

Create a policy store in Amazon Verified Permissions. Configure Cognito as the identity source Map Cognito access tokens to the Verified Permissions schema.

C.

Create customer managed permissions by using AWS Resource Access Manager (AWS RAM) Configure the Cognito identity pool to assign users to the customer managed permissions

D.

Create a set of 1AM users and 1AM policies. Configure the Cognito user pool to assign users to the 1AM users.

A security engineer is investigating a malware infection that has spread across a set of Amazon EC2 instances. A key indicator of the compromise is outbound traffic on TCP port 2905 to a set of command and control hosts on the internet.

The security engineer creates a network ACL rule that denies the identified outbound traffic. The security engineer applies the network ACL rule to the subnet of the EC2 instances. The security engineer must identify any EC2 instances that are trying to communtcate on TCP port 2905.

Which solution will identify the affected EC2 instances with the LEAST operational effort?

A.

Create a Network Access Scope in Amazon VPC Network Access Analyzer. Use the Network Access Scope to identify EC2 instances that try to send traffic to TCP port 2905.

B.

Enable VPC flow logs for the VPC where the affected EC2 instances are located Configure the flow logs to capture rejected traffic. In the flow logs, search for REJECT records that have a destination TCP port of 2905.

C.

Enable Amazon GuardDuty Create a custom GuardDuty IP list to create a finding when an EC2 instance tries to communicate with one of the command and control hosts. Use Amazon Detective to identify the EC2 instances that initiate the communication.

D.

Create a firewall in AWS Network Firewall. Attach the firewall to the subnet of the EC2 instances. Create a custom rule to identify and log traffic from the firewall on TCP port 2905. Create an Amazon CloudWatch Logs metric filter to identify firewall logs that reference traffic on TCP port 2905.

A company's security team is building a solution for logging and visualization. The solution will assist the company with the large variety and velocity of data that it receives from IAM across multiple accounts. The security team has enabled IAM CloudTrail and VPC Flow Logs in all of its accounts. In addition, the company has an organization in IAM Organizations and has an IAM Security Hub master account.

The security team wants to use Amazon Detective However the security team cannot enable Detective and is unsure why

What must the security team do to enable Detective?

A.

Enable Amazon Macie so that Secunty H jb will allow Detective to process findings from Macie.

B.

Disable IAM Key Management Service (IAM KMS) encryption on CtoudTrail logs in every member account of the organization

C.

Enable Amazon GuardDuty on all member accounts Try to enable Detective in 48 hours

D.

Ensure that the principal that launches Detective has the organizations ListAccounts permission

While securing the connection between a company's VPC and its on-premises data center, a Security Engineer sent a ping command from an on-premises host

(IP address 203.0.113.12) to an Amazon EC2 instance (IP address 172.31.16.139). The ping command did not return a response. The flow log in the VPC showed the following:

2 123456789010 eni-1235b8ca 203.0.113.12 172.31.16.139 0 0 1 4 336 1432917027 1432917142 ACCEPT OK

2 123456789010 eni-1235b8ca 172.31.16.139 203.0.113.12 0 0 1 4 336 1432917094 1432917142 REJECT OK

What action should be performed to allow the ping to work?

A.

In the security group of the EC2 instance, allow inbound ICMP traffic.

B.

In the security group of the EC2 instance, allow outbound ICMP traffic.

C.

In the VPC's NACL, allow inbound ICMP traffic.

D.

In the VPC's NACL, allow outbound ICMP traffic.

A company hosts a web application on an Apache web server. The application runs on Amazon EC2 instances that are in an Auto Scaling group. The company configured the EC2 instances to send the Apache web server logs to an Amazon CloudWatch Logs group that the company has configured to expire after 1 year.

Recently, the company discovered in the Apache web server logs that a specific IP address is sending suspicious requests to the web application. A security engineer wants to analyze the past week of Apache web server logs to determine how many requests that the IP address sent and the corresponding URLs that the IP address requested.

What should the security engineer do to meet these requirements with the LEAST effort?

A.

Export the CloudWatch Logs group data to Amazon S3. Use Amazon Macie to query the logs for the specific IP address and the requested URLs.

B.

Configure a CloudWatch Logs subscription to stream the log group to an Am-azon OpenSearch Service cluster. Use OpenSearch Service to analyze the logs for the specific IP address and the requested URLs.

C.

Use CloudWatch Logs Insights and a custom query syntax to analyze the CloudWatch logs for the specific IP address and the requested URLs.

D.

Export the CloudWatch Logs group data to Amazon S3. Use AWS Glue to crawl the S3 bucket for only the log entries that contain the specific IP ad-dress. Use AWS Glue to view the results.

A company hosts its public website on Amazon EC2 instances behind an Application Load Balancer (ALB). The website is experiencing a global DDoS attack by a specific loT device brand that has a unique user agent.

A security engineer is creating an AWS WAF web ACL and will associate the web ACL with the ALB. The security engineer must implement a rule statement as part of the web ACL to block the requests. The rule statement must mitigate the current attack and future attacks from these loT devices without blocking requests from customers.

Which rule statement will meet these requirements?

A.

Use an IP set match rule statement that includes the IP address for loT devices from the user agent.

B.

Use a geographic match rule statement. Configure the statement to block countries that the loT devices are located in.

C.

Use a rate-based rule statement. Set a rate limit that is equal to the number of requests that are coming from the loT devices.

D.

Use a string match rule statement that includes details of the loT device brand from the user agent.

A company is using Amazon Macie, AWS Firewall Manager, Amazon Inspector, and AWS Shield Advanced in its AWS account. The company wants to receive alerts if a DDoS attack occurs against the account.

Which solution will meet this requirement?

A.

Use Macie to detect an active DDoS event. Create Amazon CloudWatch alarms that respond to Macie findings.

B.

Use Amazon Inspector to review resources and to invoke Amazon CloudWatch alarms for any resources that are vulnerable to DDoS attacks.

C.

Create an Amazon CloudWatch alarm that monitors Firewall Manager metrics for an active DDoS event.

D.

Create an Amazon CloudWatch alarm that monitors Shield Advanced metrics for an active DDoS event.

A company deployed Amazon GuardDuty In the us-east-1 Region. The company wants all DNS logs that relate to the company's Amazon EC2 instances to be inspected. What should a security engineer do to ensure that the EC2 instances are logged?

A.

Use IPv6 addresses that are configured for hostnames.

B.

Configure external DNS resolvers as internal resolvers that are visible only to IAM.

C.

Use IAM DNS resolvers for all EC2 instances.

D.

Configure a third-party DNS resolver with logging for all EC2 instances.

A company is using AWS to run a long-running analysis process on data that is stored in Amazon S3 buckets. The process runs on a fleet of Amazon EC2 instances that are in an Auto Scaling group. The EC2 instances are deployed in a private subnet Of a VPC that does not have internet access. The EC2 instances and the S3 buckets are in the same AWS account

The EC2 instances access the S3 buckets through an S3 gateway endpoint that has the default access policy. Each EC2 instance is associated With an instance profile role that has a policy that explicitly allows the s3:GetObject action and the s3:PutObject action for only the required S3 buckets.

The company learns that one or more of the EC2 instances are compromised and are exfiltrating data to an S3 bucket that is outside the companys organization in AWS Organizations. A security engtneer must implement a solution to stop this exfiltration of data and to keep the EC2 processing job functional.

Which solution will meet these requirements?

A.

Update the policy on the S3 gateway endpoint to allow the S3 actions CY11y if the values of the aws:ResourceOrglD and aws:PrincipalOrglD condition keys match the companys values.

B.

Update the policy on the instance profile role to allow the S3 actions only if the value of the aws:ResourceOrglD condition key matches the company's value.

C.

Add a network ACL rule to the subnet of the EC2 instances to block outgoing connections on port 443.

D.

Apply an SCP on the AWS account to allow the $3 actions only if the values of the aws:ResourceOrglD and aws:PrincipalOrglD condition keys match the company's values.

A security engineer is creating an AWS Lambda function. The Lambda function needs to use a role that is named LambdaAuditRole to assume a role that is named AcmeAuditFactoryRole in a different AWS account.

When the code is processed, the following error message appears: "An error oc-curred (AccessDenied) when calling the AssumeRole operation."

Which combination of steps should the security engineer take to resolve this er-ror? (Select TWO.)

A.

Ensure that LambdaAuditRole has the sts:AssumeRole permission for Ac-meAuditFactoryRole.

B.

Ensure that LambdaAuditRole has the AWSLambdaBasicExecutionRole managed policy attached.

C.

Ensure that the trust policy for AcmeAuditFactoryRole allows the sts:AssumeRole action from LambdaAuditRole.

D.

Ensure that the trust policy for LambdaAuditRole allows the sts:AssumeRole action from the lambda.amazonaws.com service.

E.

Ensure that the sts:AssumeRole API call is being issued to the us-east-I Region endpoint.

A public subnet contains two Amazon EC2 instances. The subnet has a custom network ACL. A security engineer is designing a solution to improve the subnet security.

The solution must allow outbound traffic to an internet service that uses TLS through port 443. The solution also must deny inbound traffic that is destined for MySQL port 3306.

Which network ACL rule set meets these requirements?

A.

Use inbound rule 100 to allow traffic on TCP port 443. Use inbound rule 200 to deny traffic on TCP port 3306. Use outbound rule 100 to allow traffic on TCP port 443.

B.

Use inbound rule 100 to deny traffic on TCP port 3306. Use inbound rule 200 to allow traffic on TCP port range 1024-65535. Use outbound rule 100 to allow traffic on TCP port 443.

C.

Use inbound rule 100 to allow traffic on TCP port range 1024-65535. Use inbound rule 200 to deny traffic on TCP port 3306. Use outbound rule 100 to allow traffic on TCP port 443.

D.

Use inbound rule 100 to deny traffic on TCP port 3306. Use inbound rule 200 to allow traffic on TCP port 443. Use outbound rule 100 to allow traffic on TCP port 443.

A business stores website images in an Amazon S3 bucket. The firm serves the photos to end users through Amazon CloudFront. The firm learned lately that the photographs are being accessible from nations in which it does not have a distribution license.

Which steps should the business take to safeguard the photographs and restrict their distribution? (Select two.)

A.

Update the S3 bucket policy to restrict access to a CloudFront origin access identity (OAI).

B.

Update the website DNS record to use an Amazon Route 53 geolocation record deny list of countries where the company lacks a license.

C.

Add a CloudFront geo restriction deny list of countries where the company lacks a license.

D.

Update the S3 bucket policy with a deny list of countries where the company lacks a license.

E.

Enable the Restrict Viewer Access option in CloudFront to create a deny list of countries where the company lacks a license.

A company wants to monitor the deletion of AWS Key Management Service (AWS KMS) customer managed keys. A security engineer needs to create an alarm that will notify the company before a KMS key is deleted. The security engineer has configured the integration of AWS CloudTrail with Amazon CloudWatch.

What should the security engineer do next to meet these requirements?

A.

Specify the deletion time of the key material during KMS key creation. Create a custom AWS Config rule to assess the key's scheduleddeletion. Configure the rule to trigger upon a configuration change. Send a message to an Amazon Simple Notification Service (Amazon SNS) topic if the key is scheduled for deletion.

B.

Create an Amazon EventBridge rule to detect KMS API calls of DeleteAlias. Create an AWS Lambda function to send an Amazon Simple Notification Service (Amazon SNS) message to the company. Add the Lambda function as the target of the EventBridge rule.

C.

Create an Amazon EventBridge rule to detect KMS API calls of DisableKey and ScheduleKeyDeletion. Create an AWS Lambda function to send an Amazon Simple Notification Service (Amazon SNS) message to the company. Add the Lambda function as the target of the EventBridge rule.

D.

Create an Amazon Simple Notification Service (Amazon SNS) policy to detect KMS API calls of RevokeGrant and ScheduleKeyDeletion.Create an AWS Lambda function to generate the alarm and send the notification to the company. Add the Lambda function as the target of the SNS policy.

A company is running workloads in a single IAM account on Amazon EC2 instances and Amazon EMR clusters a recent security audit revealed that multiple Amazon Elastic Block Store (Amazon EBS) volumes and snapshots are not encrypted

The company's security engineer is working on a solution that will allow users to deploy EC2 Instances and EMR clusters while ensuring that all new EBS volumes and EBS snapshots are encrypted at rest. The solution must also minimize operational overhead

Which steps should the security engineer take to meet these requirements?

A.

Create an Amazon Event Bridge (Amazon Cloud watch Events) event with an EC2 instanceas the source and create volume as the event trigger. When the event is triggered invoke an IAM Lambda function to evaluate and notify the security engineer if the EBS volume that was created is not encrypted.

B.

Use a customer managed IAM policy that will verify that the encryptionflag of the Createvolume context is set to true. Apply this rule to all users.

C.

Create an IAM Config rule to evaluate the configuration of each EC2 instance on creation or modification. Have the IAM Config rule trigger an IAM Lambdafunction to alert the security team and terminate the instance it the EBS volume is not encrypted. 5

D.

Use the IAM Management Console or IAM CLi to enable encryption by default for EBS volumes in each IAM Region where the company operates.

An Amazon EC2 Auto Scaling group launches Amazon Linux EC2 instances and installs the Amazon CloudWatch agent to publish logs to Amazon CloudWatch Logs. The EC2 instances launch with an IAM role that has an IAM policy attached. The policy provides access to publish custom metrics to CloudWatch. The EC2 instances run in a private subnet inside a VPC. The VPC provides ^ccess to the internet for private subnets through a NAT gateway.

A security engineer notices that no logs are being published to CloudWatch Logs for the EC2 instances that the Auto Scaling group launches. The security engineer validates that the CloudWatch Logs agent is running and is configured properly on the EC2 instances. In addition, the security engineer validates that network communications are working properly to AWS services.

What can the security engineer do to ensure that the logs are published to CloudWatch Logs?

A.

Configure the IAM policy in use by the IAM role to have access to the required cloudwatch: API actions thatwill publish logs.

B.

Adjust the Amazon EC2 Auto Scaling service-linked role to have permissions to write to CloudWatch Logs.

C.

Configure the IAM policy in use by the IAM role to have access to the required AWS logs: API actions that willpublish logs.

D.

Add an interface VPC endpoint to provide a route to CloudWatch Logs.

A security engineer receives an IAM abuse email message. According to the message, an Amazon EC2 instance that is running in the security engineer's IAM account is sending phishing email messages.

The EC2 instance is part of an application that is deployed in production. The application runs on many EC2 instances behind an Application Load Balancer. The instances run in an AmazonEC2 Auto Scaling group across multiple subnets and multiple Availability Zones.

The instances normally communicate only over the HTTP. HTTPS, and MySQL protocols. Upon investigation, the security engineer discovers that email messages are being sent over port 587. All other traffic is normal.

The security engineer must create a solution that contains the compromised EC2 instance, preserves forensic evidence for analysis, and minimizes application downtime. Which combination of steps must the security engineer take to meet these requirements? (Select THREE.)

A.

Add an outbound rule to the security group that is attached to the compromised EC2 instance to deny traffic to 0.0.0.0/0 and port 587.

B.

Add an outbound rule to the network ACL for the subnet that contains the compromised EC2 instance to deny traffic to 0.0.0.0/0 and port 587.

C.

Gather volatile memory from the compromised EC2 instance. Suspend the compromised EC2 instance from the Auto Scaling group. Then take a snapshot of the compromised EC2 instance. v

D.

Take a snapshot of the compromised EC2 instance. Suspend the compromised EC2 instance from the Auto Scaling group. Then gather volatile memory from the compromised EC2 instance.

E.

Move the compromised EC2 instance to an isolated subnet that has a network ACL that has no inbound rules or outbound rules.

F.

Replace the existing security group that is attached to the compromised EC2 instance with a new security group that has no inbound rules or outbound rules.

A company uses AWS Organizations. The company wants to implement short-term cre-dentials for third-party AWS accounts to use to access accounts within the com-pany's organization. Access is for the AWS Management Console and third-party software-as-a-service (SaaS) applications. Trust must be enhanced to prevent two external accounts from using the same credentials. The solution must require the least possible operational effort.

Which solution will meet these requirements?

A.

Use a bearer token authentication with OAuth or SAML to manage and share a central Amazon Cognito user pool across multiple Amazon API Gateway APIs.

B.

Implement AWS IAM Identity Center (AWS Single Sign-On), and use an identi-ty source of choice. Grant access to users and groups from other accounts by using permission sets that are assigned by account.

C.

Create a unique IAM role for each external account. Create a trust policy. Use AWS Secrets Manager to create a random external key.

D.

Create a unique IAM role for each external account. Create a trust policy that includes a condition that uses the sts:Externalld condition key.

A company is implementing a new application in a new IAM account. A VPC and subnets have been created for the application. The application has been peered to an existing VPC in another account in the same IAM Region for database access. Amazon EC2 instances will regularly be created and terminated in the application VPC, but only some of them will need access to the databases in the peered VPC over TCP port 1521. A security engineer must ensure that only the EC2 instances that need access to the databases can access them through the network.

How can the security engineer implement this solution?

A.

Create a new security group in the database VPC and create an inbound rule that allows all traffic from the IP address range of the application VPC. Add a new network ACL rule on the database subnets. Configure the rule to TCP port 1521 from the IP address range of the application VPC. Attach the new security group to the database instances that the application instances need to access.

B.

Create a new security group in the application VPC with an inbound rule that allows the IP address range of the database VPC over TCP port 1521. Create a new security group in the database VPC with an inbound rule that allows the IP address range of the application VPC over port 1521. Attach the new security group to the database instances and the application instances that need database access.

C.

Create a new security group in the application VPC with no inbound rules. Create a new security group in the database VPC with an inbound rule that allows TCP port 1521 from the new application security group in the application VPC. Attach the application security group to the application instances that need database access, and attach the database security group tothe database instances.

D.

Create a new security group in the application VPC with an inbound rule that allows the IP address range of the database VPC over TCP port 1521. Add a new network ACL rule on the database subnets. Configure the rule to allow all traffic from the IP address range of the application VPC. Attach the new security group to the application instances that need database access.

A company is using an AWS Key Management Service (AWS KMS) AWS owned key in its application to encrypt files in an AWS account The company's security team wants the ability to change to new key material for new files whenever a potential key breach occurs A security engineer must implement a solution that gives the security team the ability to change the key whenever the team wants to do so

Which solution will meet these requirements?

A.

Create a new customer managed key Add a key rotation schedule to the key Invoke the key rotation schedule every time the security team requests a key change

B.

Create a new AWS managed key Add a key rotation schedule to the key Invoke the key rotation schedule every time the security team requests a key change

C.

Create a key alias Create a new customer managed key every time the security team requests a key change Associate the alias with the new key

D.

Create a key alias Create a new AWS managed key every time the security team requests a key change Associate the alias with the new key

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Total 417 questions
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