Security and Compliance

441 soru

Soru 321Soru

An online education platform stores student grades and profile details on AWS. To comply with privacy standards, the platform must ensure that data is encrypted both at rest and in transit. Under the AWS shared responsibility model, which of the following actions are responsibilities of the customer? (Select TWO.)

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Cevap: Configuring server-side encryption on Amazon S3 buckets used to store student files; Managing SSL/TLS certificates and traffic encryption for application servers running on Amazon EC2

Cevap

The correct responsibilities of the customer are configuring server-side encryption on Amazon S3 buckets and managing SSL/TLS certificates and traffic encryption on Amazon EC2 instances.
Under the AWS shared responsibility model, the customer is responsible for 'security in the cloud,' which includes managing data encryption options (such as enabling server-side encryption on Amazon S3) and configuring network traffic protection at the OS/application layer (such as SSL/TLS configuration on EC2 instances).

Adım Adım Çözüm

1
Identify the requirements of the scenario.
The platform needs to encrypt student data at rest and in transit.
To determine which actions are performed by the customer vs AWS under the shared responsibility model.
2
Apply the AWS Shared Responsibility Model to data encryption.
The customer is responsible for configuring encryption on services they use (like S3) and managing traffic encryption (like SSL/TLS) on their instances, while AWS is responsible for physical security and infrastructure maintenance.
To select the two correct customer-managed security actions.

Anahtar Kavram

AWS Shared Responsibility Model for Data Protection and Encryption
Soru 322Soru

A cloud administrator is designing the network security architecture for a multi-tier application. The administrator needs to implement a firewall barrier at the boundary of a subnet that evaluates traffic flow in both directions independently (stateless). Which AWS resource must be used to achieve this?

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Cevap: Network Access Control Lists (Network ACLs)

Cevap

Network Access Control Lists (Network ACLs)
Network Access Control Lists (Network ACLs) are the correct answer because they serve as a stateless firewall at the subnet level, inspecting traffic entering and exiting the subnet and requiring explicit rules for both directions.

Adım Adım Çözüm

1
Identify the required network boundary for the security barrier.
The requirement specifies a barrier at the boundary of a subnet rather than at the individual instance level.
This narrows the choices down to subnet-level security features like Network ACLs.
2
Identify the evaluation state behavior required by the scenario.
The firewall must be stateless (evaluating traffic flow in both directions independently).
Network ACLs are stateless, meaning that outbound return traffic must be explicitly allowed, whereas Security Groups are stateful and automatically allow return traffic.

Anahtar Kavram

Stateful vs. Stateless Network Firewalls at Subnet and Instance Levels
Soru 323Soru

A pharmaceutical research firm is deploying an application that uses Amazon DynamoDB to store proprietary drug discovery data. Under the AWS Shared Responsibility Model, which of the following tasks is the responsibility of the customer?

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Cevap: Defining fine-grained access control policies using IAM to restrict access to the database tables.

Cevap

Defining fine-grained access control policies using IAM to restrict access to the database tables.
For fully managed services like Amazon DynamoDB, the customer is responsible for configuring access permissions, such as writing IAM policies to define who can access the DynamoDB tables. This falls under security 'in' the cloud.

Adım Adım Çözüm

1
Analyze the AWS service model for Amazon DynamoDB.
Amazon DynamoDB is a fully managed database service (NoSQL), meaning AWS handles the underlying infrastructure, operating system, and database software.
Understanding the service type (IaaS vs. PaaS vs. Managed) determines the boundary of the Shared Responsibility Model.
2
Differentiate between security 'of' the cloud and security 'in' the cloud for DynamoDB.
AWS is responsible for physical security, operating system patching, and hardware management. The customer is responsible for data classification, encryption settings, and client-side access control.
This distinction helps identify customer-managed tasks vs. AWS-managed tasks.
3
Evaluate the choices to find the customer's responsibility.
Defining access control policies via IAM is a customer task, while OS patching and physical security are AWS tasks. Directly configuring NACLs on managed database instances is a misunderstanding since DynamoDB does not expose instances to the customer.
To select the correct option representing the customer's operational boundary.

Anahtar Kavram

Under the AWS Shared Responsibility Model, for managed services like DynamoDB, AWS manages the physical infrastructure, operating system, and database software, while the customer is responsible for data protection, access configuration (IAM), and endpoint security.
Tahmini Süre:1m 0s
Soru 324Soru

When configuring security controls within an Amazon Virtual Private Cloud (VPC), understanding the behavior of instance-level and subnet-level firewalls is critical. Which two of the following statements correctly describe the operational characteristics of these network security resources?

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Cevap: Instance-level firewalls (Security Groups) are stateful, meaning that return traffic is automatically allowed regardless of outbound rules.; Subnet-level firewalls (Network Access Control Lists) are stateless, meaning that return traffic must be explicitly allowed by an outbound rule.

Cevap

The correct statements are that Security Groups (instance-level firewalls) are stateful and Network ACLs (subnet-level firewalls) are stateless.
Instance-level firewalls (Security Groups) are stateful, which means they automatically track connection state and allow return traffic without needing an explicit outbound rule. In contrast, subnet-level firewalls (Network ACLs) are stateless, which means they do not track connection state and require explicit rules for both inbound and outbound traffic.

Adım Adım Çözüm

1
Evaluate the behavior of instance-level firewalls (Security Groups).
Security Groups operate at the instance level and are stateful, automatically allowing return traffic.
This establishes that inbound-to-outbound or outbound-to-inbound return traffic does not require symmetric rule configurations.
2
Evaluate the behavior of subnet-level firewalls (Network ACLs).
Network ACLs operate at the subnet level and are stateless, evaluating traffic in each direction independently.
This establishes that return traffic must be explicitly allowed by matching rules in the opposite direction.

Anahtar Kavram

Stateful vs. Stateless Firewalls in AWS VPC (Security Groups and Network ACLs)
Soru 325Soru

An online educational platform hosts its application on Amazon EC2 instances. The DevOps team wants to automatically scan these virtual servers for software packages with known vulnerabilities and identify any unintended public network exposure. Which AWS service should the platform use to perform this automated vulnerability assessment?

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Cevap: Amazon Inspector

Cevap

Amazon Inspector
The correct answer is Amazon Inspector. Amazon Inspector is an automated vulnerability management service that scans EC2 instances, container images in Amazon ECR, and AWS Lambda functions for software vulnerabilities and unintended network path exposure.

Adım Adım Çözüm

1
Identify the core security requirement in the scenario.
The platform needs to scan host operating systems on EC2 instances for software vulnerabilities and network exposure.
This clarifies that the solution must perform vulnerability assessment and path analysis rather than audit logging or threat detection.
2
Evaluate the capabilities of the available security services.
Amazon Inspector is the specialized AWS service that continuously and automatically performs host-level vulnerability scans on EC2 instances and ECR container images.
Matching the requirements to the specific capabilities of Amazon Inspector yields the correct solution.

Anahtar Kavram

Amazon Inspector is the primary AWS service used for automated vulnerability management and scanning of EC2 instances, container images, and Lambda functions.
Soru 326Soru

A financial institution is migrating its payment transaction database to AWS. Due to strict regulatory compliance requirements, the institution must manage and control its cryptographic keys using dedicated, single-tenant hardware security modules (HSMs) directly within their Virtual Private Cloud (VPC). Which AWS service should the institution use to meet this requirement?

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Cevap: AWS CloudHSM

Cevap

AWS CloudHSM
AWS CloudHSM is the correct service because it provides dedicated, single-tenant hardware security modules (HSMs) running in the customer's Virtual Private Cloud (VPC). This allows the customer to have complete control over key management, encryption, and cryptographic operations, satisfying the strict regulatory compliance requirement.

Adım Adım Çözüm

1
Analyze the customer's encryption and key storage requirements.
The customer requires dedicated, single-tenant hardware security modules (HSMs) that they manage directly.
This is a regulatory compliance constraint that rules out shared or multi-tenant managed key services.
2
Identify the AWS service that provides dedicated HSMs.
AWS CloudHSM is the service that provisions dedicated, single-tenant HSM instances inside the customer's VPC.
AWS CloudHSM gives the customer exclusive control over key storage hardware, satisfying the compliance requirement.

Anahtar Kavram

Dedicated key management using AWS CloudHSM versus multi-tenant key management using AWS KMS.
Soru 327Soru

A multiplayer gaming startup needs to establish a security and operational monitoring strategy on AWS. The security team wants to audit all API actions and configuration changes made by developers across their AWS account. Concurrently, the operations team needs to track performance metrics of their Amazon EC2 instances and receive automated alerts if CPU utilization exceeds 80%. Which combination of AWS services should the startup implement to meet these requirements?

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Cevap: AWS CloudTrail to audit all API activity and configuration changes, and Amazon CloudWatch to monitor instance metrics and send utilization alerts

Cevap

AWS CloudTrail to audit all API activity and configuration changes, and Amazon CloudWatch to monitor instance metrics and send utilization alerts
The correct option is the combination of AWS CloudTrail and Amazon CloudWatch. AWS CloudTrail is designed to record and audit API calls and user activity across your AWS infrastructure, providing a complete log of who did what and when. Amazon CloudWatch is the monitoring and observability service that tracks operational and performance metrics, such as CPU utilization, and allows you to set alarms that notify you or take action when a metric threshold is crossed.

Adım Adım Çözüm

1
Identify the service responsible for logging and auditing API activity and configuration changes across the AWS account.
AWS CloudTrail is determined to be the service that records API calls, user actions, and resource changes.
CloudTrail provides event history of your AWS account activity, including actions taken through the AWS Management Console, AWS SDKs, and command line tools.
2
Identify the service responsible for monitoring performance metrics (such as CPU utilization) and triggering automated alerts.
Amazon CloudWatch is determined to be the service that tracks metrics, collects log files, and sets alarms.
CloudWatch is the primary monitoring and observability service on AWS, allowing users to configure alarms when resource metrics cross defined thresholds.
3
Combine the identified services to find the correct matching option.
The combination of AWS CloudTrail and Amazon CloudWatch is selected.
This combination successfully satisfies both the auditing requirements of the security team and the performance monitoring/alerting requirements of the operations team.

Anahtar Kavram

AWS CloudTrail vs Amazon CloudWatch for Security and Operations
Soru 328Soru

A media streaming company uses Amazon CloudFront to deliver video content to users globally. Under the AWS Shared Responsibility Model, which TWO of the following tasks are the responsibility of AWS?

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Cevap: Maintaining and securing the physical infrastructure at global edge locations; Patching and updating the underlying software and firmware on CloudFront edge servers

Cevap

The responsibilities of AWS are maintaining and securing the physical infrastructure at global edge locations, and patching and updating the underlying software and firmware on CloudFront edge servers.
Under the AWS Shared Responsibility Model, AWS is responsible for the security 'of' the cloud. For a managed service like Amazon CloudFront, this includes managing the physical security of the global edge locations where content is cached, and patching the software and firmware of the edge servers. Configuring distribution settings, such as forcing HTTPS (Viewer Protocol Policy) or restricting access with signed URLs, are customer responsibilities (security 'in' the cloud). Additionally, customers cannot conduct physical audits of AWS facilities; they must retrieve compliance reports via AWS Artifact.

Adım Adım Çözüm

1
Identify the service type of Amazon CloudFront.
Amazon CloudFront is a managed global content delivery network (CDN) service.
Determining the service type helps identify where the boundary lies in the Shared Responsibility Model.
2
Analyze AWS's responsibilities for a managed CDN service.
AWS is responsible for the security 'of' the cloud, which includes physical security of the edge location data centers and patching the underlying software/firmware on the edge servers.
This identifies the correct options representing AWS-managed tasks.
3
Identify and eliminate customer-side responsibilities.
Configuring viewer protocol policies (HTTPS), setting up signed URLs/cookies, and retrieving compliance reports via AWS Artifact (instead of physical data center audits) are customer responsibilities.
This helps verify that the distractors represent security 'in' the cloud tasks managed by the customer.

Anahtar Kavram

Shared Responsibility Model for Managed Services
Soru 329Soru

A logistics company manages its supply chain application on AWS. The security team needs to implement a solution that satisfies two requirements: first, automatically scanning container images stored in Amazon Elastic Container Registry (ECR) for software vulnerabilities; second, continuously monitoring the AWS environment for anomalous API activity and potential unauthorized access. Which of the following AWS services should the company use to meet these requirements? (Select two.)

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Cevap: Amazon Inspector; Amazon GuardDuty

Cevap

The logistics company should use Amazon Inspector and Amazon GuardDuty to meet these requirements.
To satisfy the requirements, the company must use a combination of vulnerability scanning and intelligent threat detection. Amazon Inspector automatically and continuously scans container images in Amazon Elastic Container Registry (ECR) for known software vulnerabilities. Amazon GuardDuty provides continuous monitoring and intelligent threat detection by analyzing API actions and logs to identify anomalous behavior and unauthorized access.

Adım Adım Çözüm

1
Analyze the first requirement: vulnerability scanning of container images in Amazon Elastic Container Registry (ECR).
Identify Amazon Inspector as the service designed to automatically and continuously scan EC2 workloads, Lambda functions, and ECR container images for software vulnerabilities.
Amazon Inspector specifically handles software vulnerability scanning on the host and container levels.
2
Analyze the second requirement: continuous monitoring of the AWS environment for anomalous API activity and unauthorized access.
Identify Amazon GuardDuty as the intelligent threat detection service that analyzes logs (such as CloudTrail logs) to discover anomalous API activity.
Amazon GuardDuty uses machine learning and threat intelligence to identify suspicious behavior and threats across the AWS environment.

Anahtar Kavram

Vulnerability scanning and threat detection using Amazon Inspector and Amazon GuardDuty.
Tahmini Süre:1m 30s
Soru 330Soru

To secure a newly created AWS account, an administrator needs to establish basic identity and access controls. According to AWS security best practices, which of the following actions should the administrator perform? (Select TWO.)

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Cevap: Enable Multi-Factor Authentication (MFA) on the AWS account root user; Create individual IAM users for administrators to perform daily tasks

Cevap

Enable Multi-Factor Authentication (MFA) on the AWS account root user, and create individual IAM users for administrators to perform daily tasks.
Securing the AWS account root user using multi-factor authentication (MFA) is a primary security recommendation. Additionally, administrators should create individual IAM users for daily administrative and operational work rather than using the root user, ensuring that actions can be audited and limited in scope.

Adım Adım Çözüm

1
Identify the recommended practices for securing the root user account.
The root user has unrestricted access to all resources and must be secured immediately by enabling Multi-Factor Authentication (MFA) and locking away its credentials.
This prevents unauthorized access to the entire AWS account.
2
Determine the appropriate configuration for administrative and routine tasks.
Instead of using the root user, administrators must create individual IAM users with appropriate permissions for daily activities.
This establishes individual accountability and aligns with the principle of least privilege.

Anahtar Kavram

AWS account security best practices dictate that the root user should not be used for daily tasks, must be protected with MFA, and daily tasks should be performed by individual IAM identities with minimal required privileges.
Tahmini Süre:1m 0s
Soru 331Soru

A travel booking platform is deploying a new application on AWS. To secure customer reservation records, the platform needs to encrypt data at rest within its storage services. The security team wants to use a fully managed service that creates and controls the cryptographic keys, rather than renting dedicated, single-tenant cryptographic hardware. Which AWS service is designed to meet this requirement?

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Cevap: AWS Key Management Service (AWS KMS)

Cevap

AWS Key Management Service (AWS KMS)
AWS Key Management Service (AWS KMS) is a fully managed, multi-tenant service that allows customers to easily create, manage, and control cryptographic keys. Because it is a multi-tenant service, the underlying hardware security modules are shared, making it the correct match for the scenario's requirements.

Adım Adım Çözüm

1
Identify the key requirements in the scenario: encrypting data at rest using a fully managed, multi-tenant service without dedicated hardware.
The target service must handle key generation and administration under a shared multi-tenant model.
This helps differentiate between shared multi-tenant key management and dedicated single-tenant hardware security modules.
2
Select the service that manages cryptographic keys in a multi-tenant configuration.
AWS Key Management Service (AWS KMS) fits this description, whereas AWS CloudHSM provides dedicated single-tenant HSMs.
This aligns the service architecture with the company's preferences.

Anahtar Kavram

AWS Key Management Service (AWS KMS) provides fully managed, multi-tenant cryptographic key management for encrypting data at rest.
Soru 332Soru

An administrator needs to configure a network access control list (network ACL) to allow inbound traffic on a specific port to a subnet. Which of the following actions is also required to allow response traffic back to the client?

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Cevap: Add a corresponding outbound rule in the network ACL to allow the return traffic.

Cevap

Add a corresponding outbound rule in the network ACL to allow the return traffic.
Network ACLs operate at the subnet level and are stateless. This means they do not keep track of session states. If you define a rule to allow inbound traffic, you must also define a corresponding rule to allow the outbound response traffic back to the client.

Adım Adım Çözüm

1
Identify the security control being configured.
The control is a Network Access Control List (network ACL) operating at the subnet boundary.
Determining the security control type helps identify whether the rule evaluation is stateful or stateless.
2
Apply the stateless rule logic of Network ACLs.
Since Network ACLs are stateless, allowing inbound traffic on a port does not automatically allow outbound responses on that port.
Stateless firewalls evaluate traffic in each direction independently.
3
Define the missing configuration required for communication.
An outbound rule allowing response traffic back to the client must be added to the network ACL.
Both inbound and outbound rules are necessary to enable complete two-way network communications.

Anahtar Kavram

Network ACLs are stateless security controls that evaluate inbound and outbound traffic independently, requiring manual rule configuration in both directions.
Soru 333Soru

A biotechnology firm is preparing for an audit to verify compliance with international security standards. The compliance team needs to obtain AWS security reports and establish which security controls are the direct responsibility of the cloud provider. Which TWO actions should the company take to meet these requirements?

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Cevap: Retrieve the AWS ISO 27001 certification report directly from AWS Artifact to submit to external auditors.; Confirm that AWS maintains the physical security of the data centers hosting the services under the AWS Shared Responsibility Model.

Cevap

Retrieve the AWS ISO 27001 certification report directly from AWS Artifact and confirm that AWS maintains the physical security of the data centers hosting the services under the AWS Shared Responsibility Model.
AWS Artifact provides on-demand access to AWS's security and compliance reports (such as the ISO 27001 certification) to share with auditors. Under the AWS Shared Responsibility Model, AWS is responsible for security 'of' the cloud, which includes the physical security of data centers and the underlying infrastructure.

Adım Adım Çözüm

1
Determine the source for AWS compliance documentation.
Identify AWS Artifact as the self-service portal where customers can download AWS compliance documents, including SOC and ISO reports.
Auditors require official documentation of AWS's infrastructure compliance.
2
Apply the AWS Shared Responsibility Model to identify boundary responsibilities.
Verify that security 'of' the cloud, such as physical data center security and host virtualization software security, is AWS's responsibility.
This establishes which controls the customer does not need to implement or manage themselves.

Anahtar Kavram

Compliance and Governance in AWS
Soru 334Soru

A cloud practitioner is designing a database subnet within an Amazon VPC and needs to apply a firewall rule set at the subnet boundary. The configuration must be stateless, requiring both inbound and outbound traffic rules to be explicitly defined. Which AWS service or feature should be implemented to meet this requirement?

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Cevap: Network Access Control Lists (Network ACLs)

Cevap

Network Access Control Lists (Network ACLs)
Network Access Control Lists (Network ACLs) act as a stateless firewall at the subnet boundary. Because they are stateless, any allowed inbound traffic must also have a corresponding outbound rule to allow return traffic (and vice versa).

Adım Adım Çözüm

1
Analyze the security boundary requirement.
The requirement specifies applying traffic filtering rules at the subnet boundary, which points to a subnet-level control.
This narrows the choices down to subnet-level features rather than instance-level features.
2
Evaluate the statefulness requirement.
The requirement specifies that the firewall must be stateless, meaning that both inbound and outbound rules must be explicitly allowed.
Network Access Control Lists (Network ACLs) are stateless subnet-level firewalls, whereas Security Groups are stateful instance-level firewalls.

Anahtar Kavram

Understanding the stateless and subnet-level characteristics of Network Access Control Lists (Network ACLs)
Tahmini Süre:45s
Soru 335Soru

A company wants to allow its on-premises employees to access the AWS Management Console using their existing corporate directory credentials instead of creating individual IAM users. Which of the following are required to configure this federated access? (Select TWO.)

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Cevap: Create an IAM Identity Provider (IdP) in the AWS account to establish trust with the corporate directory.; Create an IAM role that defines the permissions for the federated users.

Cevap

To configure federated access, you must create an IAM Identity Provider to establish trust with the corporate directory and create an IAM role that defines the permissions the federated users will assume.
Configuring federated access requires establishing trust between AWS and the corporate directory, which is accomplished by creating an Identity Provider (IdP) in IAM. Additionally, an IAM role must be created to define the exact permissions for these federated users when they log in to the console.

Adım Adım Çözüm

1
Identify the authentication and access mechanism for external users.
Avoid creating individual IAM users by relying on identity federation.
This allows centralized credential management and single sign-on (SSO) capabilities.
2
Establish trust and permissions within IAM.
Configure an Identity Provider (IdP) in IAM to trust the corporate directory and map external users to a designated IAM role.
This enables federated users to receive temporary, permission-controlled credentials upon authentication.

Anahtar Kavram

Identity federation in AWS IAM allows external identities to obtain temporary security credentials to access AWS resources without needing permanent IAM users.
Soru 336Soru

A media company is migrating its video-on-demand platform to AWS. The security team needs to implement a logging and security monitoring solution that meets two requirements:

1. It must record, continuously monitor, and retain a history of all API calls and user actions within the AWS account for compliance auditing.
2. It must provide continuous, intelligent threat detection and anomaly monitoring to identify potential malicious activity, such as brute-force attacks or compromised credentials.

Which AWS services should the company implement to satisfy these security requirements? (Select two.)

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Cevap: AWS CloudTrail; Amazon GuardDuty

Cevap

The correct services are AWS CloudTrail and Amazon GuardDuty.
AWS CloudTrail is correct because it monitors and logs account activity, including actions taken through the AWS Management Console, SDKs, and command line tools, which satisfies the compliance auditing requirement. Amazon GuardDuty is correct because it is a threat detection service that continuously monitors for malicious activity and unauthorized behavior using machine learning and anomaly detection.

Adım Adım Çözüm

1
Identify the service required to record and audit API calls and user activity.
AWS CloudTrail is identified as the service designed to track and log all API activity and user actions across the AWS account.
AWS CloudTrail records API history, enabling operational auditing, security analysis, and compliance tracking.
2
Identify the service required for continuous, intelligent threat detection and anomaly monitoring.
Amazon GuardDuty is identified as the intelligent threat detection service that analyzes logs to detect malicious activity.
Amazon GuardDuty uses machine learning and threat intelligence to detect threats like compromised credentials or malicious communications.

Anahtar Kavram

Differentiating between AWS security monitoring services (Amazon GuardDuty and AWS CloudTrail) and other operational or security services (Amazon Inspector, Amazon CloudWatch, and AWS KMS).
Soru 337Soru

A financial company needs to implement a security and monitoring solution for its AWS environment. The security team must be able to audit all API actions taken by users and services across the account. Additionally, the operations team needs to collect and track performance metrics for their Amazon EC2 instances to configure automated alerts for high CPU utilization. Which of the following AWS services should be used to meet these requirements? (Select TWO.)

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Cevabı ve açıklamayı göster

Cevap: AWS CloudTrail; Amazon CloudWatch

Cevap

AWS CloudTrail and Amazon CloudWatch
AWS CloudTrail and Amazon CloudWatch are the correct services. CloudTrail logs all API activity and user changes, satisfying the requirement to audit actions. CloudWatch collects resource metrics and supports alarm creation, satisfying the requirement to monitor EC2 CPU utilization and trigger alarms.

Adım Adım Çözüm

1
Identify the service required to log and audit user and service API actions within the AWS account.
AWS CloudTrail is selected.
CloudTrail maintains an event history of actions, which is essential for security auditing, governance, and operational analysis.
2
Identify the service required to collect performance metrics and set up alarms for EC2 CPU utilization.
Amazon CloudWatch is selected.
CloudWatch is the primary monitoring service for tracking resource utilization and triggering notifications or automated responses based on metrics.

Anahtar Kavram

AWS CloudTrail tracks API activity and user actions for auditing, while Amazon CloudWatch monitors resource performance metrics and configures alerts.
Soru 338Soru

A developer is troubleshooting connectivity to an Amazon EC2 instance and needs to analyze the firewall settings. The developer must evaluate the differences in behavior between security groups and network access control lists (network ACLs). Which two statements correctly describe how traffic is processed by these security features? (Select TWO.)

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Cevap: Security groups are stateful firewalls that automatically allow return traffic for allowed inbound requests.; Network Access Control Lists (network ACLs) are stateless firewalls that require explicit rules for both inbound and outbound traffic.

Cevap

Security groups are stateful firewalls that automatically allow return traffic, and Network Access Control Lists (network ACLs) are stateless firewalls that require explicit rules for both inbound and outbound traffic.
Security groups are stateful, meaning they track connection states and automatically allow return traffic for any established connection. Network ACLs are stateless, meaning they evaluate traffic in both directions independently and require explicit rules for both inbound and outbound traffic flow.

Adım Adım Çözüm

1
Analyze how statefulness affects traffic evaluation in Security Groups and Network ACLs.
Security groups automatically allow return traffic (stateful), while Network ACLs evaluate return traffic against rules (stateless).
This determines whether a separate rule is needed for return communication.
2
Identify the boundary levels where each firewall applies.
Security groups operate at the instance level (network interface), while Network ACLs operate at the subnet level.
This establishes where the traffic filtering takes place.
3
Determine customer security responsibilities under the Shared Responsibility Model.
The customer must define and manage all security rules inside their VPC.
AWS does not manage customer firewall rules; this is a customer responsibility.

Anahtar Kavram

Stateful vs. Stateless VPC Firewalls
Tahmini Süre:1m 0s
Soru 339Soru

A ridesharing service processes real-time driver and passenger location data on AWS. The security department wants to establish automated threat detection that monitors their AWS accounts for anomalous behavior, such as API activity from unrecognized IP addresses, compromised credentials, or EC2 instances communicating with malicious IP addresses. The service must analyze AWS CloudTrail event logs, VPC Flow Logs, and DNS logs. Which AWS service meets these needs?

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Cevap: Amazon GuardDuty

Cevap

Amazon GuardDuty
Amazon GuardDuty is a threat detection service that continuously monitors AWS accounts and workloads for malicious activity and unauthorized behavior. It uses machine learning, anomaly detection, and integrated threat intelligence to analyze data sources such as AWS CloudTrail event logs, VPC Flow Logs, and DNS logs to identify issues like compromised credentials or EC2 instances communicating with known malicious hosts.

Adım Adım Çözüm

1
Identify the key security objective in the scenario.
The goal is active threat detection, credential monitoring, and detecting malicious command-and-control communication from EC2 instances.
Determining the primary security goal helps narrow down the appropriate AWS security services.
2
Analyze the log data sources requested for analysis.
The required sources are AWS CloudTrail events, VPC Flow Logs, and DNS logs.
Specific security tools ingest different log sources; only Amazon GuardDuty automatically parses these three specific sources for threat intelligence.
3
Eliminate inappropriate options.
Amazon Inspector is ruled out as it focuses on vulnerability scanning rather than live threat monitoring. AWS CloudTrail is ruled out as it logs actions but does not perform analysis. AWS Shield is ruled out as it handles external DDoS protection.
This confirms that only one service fulfills all threat detection and source analysis requirements.

Anahtar Kavram

Amazon GuardDuty is an intelligent threat detection service that analyzes multiple AWS log sources (CloudTrail, VPC Flow Logs, DNS logs) to identify malicious activity and unauthorized behavior.
Soru 340Soru

A media streaming company is preparing for a security compliance review. The audit team needs to verify which IAM identity made the API calls to modify the configuration of an Amazon S3 bucket containing sensitive customer billing data. At the same time, the security team wants to set up automated threat detection to identify potential unauthorized activity or compromised credentials in their AWS environment. Which combination of AWS services should the company use to meet these requirements?

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Cevap: AWS CloudTrail to audit the API calls, and Amazon GuardDuty for threat detection

Cevap

AWS CloudTrail to audit the API calls, and Amazon GuardDuty for threat detection
AWS CloudTrail logs, continuously monitors, and retains account activity related to actions taken across your AWS infrastructure, satisfying the requirement to audit IAM identity actions on S3 buckets. Amazon GuardDuty is a threat detection service that continuously monitors for malicious activity and unauthorized behavior, satisfying the requirement to identify potential threat vectors like compromised credentials.

Adım Adım Çözüm

1
Identify the service required to track and audit configuration modifications and API actions.
AWS CloudTrail is chosen because it specifically logs, continuously monitors, and retains account activity related to actions taken across your AWS infrastructure.
Auditing access records and verifying which IAM identity performed an operation requires API auditing capabilities.
2
Identify the service required for active, automated threat detection and identifying compromised credentials.
Amazon GuardDuty is selected as it uses machine learning and threat intelligence to detect malicious behavior and unauthorized activities in AWS accounts.
Vulnerability scanners do not monitor live account activity for anomalies like compromised credentials; dedicated threat detection is required.

Anahtar Kavram

Differentiating security monitoring, API logging, and threat detection services in AWS
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Security and Compliance Alıştırma Soruları — AWS Certified Cloud Practitioner — Sayfa 17 | Examkin