Exam 8: AWS Certified Security - Specialty (SCS-C01)

A company has deployed a custom DNS server in AWS. The Security Engineer wants to ensure that Amazon EC2 instances cannot use the Amazon-provided DNS. How can the Security Engineer block access to the Amazon-provided DNS in the VPC?

A Security Engineer has been asked to troubleshoot inbound connectivity to a web server. This single web server is not receiving inbound connections from the internet, whereas all other web servers are functioning properly. The architecture includes network ACLs, security groups, and a virtual security appliance. In addition, the Development team has implemented Application Load Balancers (ALBs) to distribute the load across all web servers. It is a requirement that traffic between the web servers and the internet flow through the virtual security appliance. The Security Engineer has verified the following: 1. The rule set in the Security Groups is correct 2. The rule set in the network ACLs is correct 3. The rule set in the virtual appliance is correct Which of the following are other valid items to troubleshoot in this scenario? (Choose two.)

A company's on-premises networks are connected to VPCs using an AWS Direct Connect gateway. The company's on-premises application needs to stream data using an existing Amazon Kinesis Data Firehose delivery stream. The company's security policy requires that data be encrypted in transit using a private network. How should the company meet these requirements?

A company uses an Amazon S3 bucket to store reports. Management has mandated that all new objects stored in this bucket must be encrypted at rest using server-side encryption with a client specified AWS Key Management Service (AWS KMS) CMK owned by the same account as the S3 bucket. The AWS account number is 111122223333, and the bucket name is reportbucket. The company's security specialist must write the S3 bucket policy to ensure the mandate can be implemented. Which statement should the security specialist include in the policy?

A company is using AWS Organizations to manage multiple AWS accounts. The company has an application that allows users to assume the AppUser IAM role to download files from an Amazon S3 bucket that is encrypted with an AWS KMS CMK. However, when users try to access the files in the S3 bucket, they get an access denied error. What should a security engineer do to troubleshoot this error? (Choose three.)

An application is running on an Amazon EC2 instance that has an IAM role attached. The IAM role provides access to an AWS Key Management Service (AWS KMS) customer managed key and an Amazon S3 bucket. A security engineer discovers a potential vulnerability on the EC2 instance that could result in the compromise of the sensitive data. Due to other critical operations, the security engineer cannot immediately shut down the EC2 instance for vulnerability patching. What is the FASTEST way to prevent the sensitive data from being exposed?

A Security Administrator is restricting the capabilities of company root user accounts. The company uses AWS Organizations and has enabled it for all feature sets, including consolidated billing. The top-level account is used for billing and administrative purposes, not for operational AWS resource purposes. How can the Administrator restrict usage of member root user accounts across the organization?

A security engineer received an Amazon GuardDuty alert indicating a finding involving the Amazon EC2 instance that hosts the company's primary website. The GuardDuty finding received read: UnauthorizedAccess:IAMUser/InstanceCredentialExfiltration. The security engineer confirmed that a malicious actor used API access keys intended for the EC2 instance from a country where the company does not operate. The security engineer needs to deny access to the malicious actor. What is the first step the security engineer should take?

A company uses identity federation to authenticate users into an identity account (987654321987) where the users assume an IAM role named IdentityRole. The users then assume an IAM role named JobFunctionRole in the target AWS account (123456789123) to perform their job functions. A user is unable to assume the IAM role in the target account. The policy attached to the role in the identity account is: What should be done to enable the user to assume the appropriate role in the target account?

A Security Engineer manages AWS Organizations for a company. The Engineer would like to restrict AWS usage to allow Amazon S3 only in one of the organizational units (OUs). The Engineer adds the following SCP to the OU: The next day, API calls to AWS IAM appear in AWS CloudTrail logs in an account under that OU. How should the Security Engineer resolve this issue?

The Development team receives an error message each time the team members attempt to encrypt or decrypt a Secure String parameter from the SSM Parameter Store by using an AWS KMS customer managed key (CMK). Which CMK-related issues could be responsible? (Choose two.)

A company has a VPC with several Amazon EC2 instances behind a NAT gateway. The company's security policy states that all network traffic must be logged and must include the original source and destination IP addresses. The existing VPC Flow Logs do not include this information. A security engineer needs to recommend a solution. Which combination of steps should the security engineer recommend? (Choose two.)

A large corporation is creating a multi-account strategy and needs to determine how its employees should access the AWS Infrastructure. Which of the following solutions would provide the MOST scalable solution?

A security team is responsible for reviewing AWS API call activity in the cloud environment for security violations. These events must be recorded and retained in a centralized location for both current and future AWS regions. What is the SIMPLEST way to meet these requirements?

The Security Engineer is managing a traditional three-tier web application that is running on Amazon EC2 instances. The application has become the target of increasing numbers of malicious attacks from the Internet. What steps should the Security Engineer take to check for known vulnerabilities and limit the attack surface? (Choose two.)

A company's Developers plan to migrate their on-premises applications to Amazon EC2 instances running Amazon Linux AMIs. The applications are accessed by a group of partner companies. The Security Engineer needs to implement the following host-based security measures for these instances: Block traffic from documented known bad IP addresses. Detect known software vulnerabilities and CIS Benchmarks compliance. Which solution addresses these requirements?

Auditors for a health care company have mandated that all data volumes by encrypted at rest. Infrastructure is deployed mainly via AWS CloudFormation: however, third-party frameworks and manual deployment are required on some legacy systems. What is the BEST way to monitor, on a recurring basis, whether all EBS volumes are encrypted?

An organization is using AWS CloudTrail, Amazon CloudWatch Logs, and Amazon CloudWatch to send alerts when new access keys are created. However, the alerts are no longer appearing in the Security Operations mail box. Which of the following actions would resolve this issue?

During a recent security audit, it was discovered that multiple teams in a large organization have placed restricted data in multiple Amazon S3 buckets, and the data may have been exposed. The auditor has requested that the organization identify all possible objects that contain personally identifiable information (PII) and then determine whether this information has been accessed. What solution will allow the Security team to complete this request?

A financial institution has the following security requirements: Cloud-based users must be contained in a separate authentication domain. Cloud-based users cannot access on-premises systems. As part of standing up a cloud environment, the financial institution is creating a number of Amazon managed databases and Amazon EC2 instances. An Active Directory service exists on-premises that has all the administrator accounts, and these must be able to access the databases and instances. How would the organization manage its resources in the MOST secure manner? (Choose two.)