Question

Which of the following is a customer responsibility according to the Aws Shared Responsibility model?

A. Apply security patches for Amazon S3 infrastructure devices.
B. Provide physical security for AWS datacenters.
C. Install operating system updates on Lambda@Edge.
D. Implement multi-factor authentication (MFA) for IAM user accounts.

Answer

D. Implement multi-factor authentication (MFA) for IAM user accounts.

Explanation 1

Answer: According to the AWS shared responsibility model, the customer responsibility is:

D. Implement multi-factor authentication (MFA) for IAM user accounts: In the shared responsibility model, AWS is responsible for the security “of” the cloud, which includes the underlying infrastructure and services. On the other hand, customers are responsible for the security “in” the cloud, which includes tasks such as access control, data protection, and user management.

Implementing multi-factor authentication (MFA) for IAM user accounts is a customer responsibility as it falls under access control and user management. MFA adds an extra layer of security by requiring users to provide additional authentication factors, such as a password and a unique code generated by a mobile app, to access their accounts.

The other options listed are AWS responsibilities:

A. Apply security patches for Amazon S3 infrastructure devices: The responsibility for applying security patches for Amazon S3 infrastructure devices lies with AWS. AWS ensures the security of the underlying infrastructure and services, including the patching of devices and systems.

B. Provide physical security for AWS data centers: AWS is responsible for the physical security of its data centers. This includes measures such as access controls, surveillance, and environmental controls to protect the physical infrastructure.

C. Install operating system updates on Lambda@Edge: AWS manages the underlying infrastructure and systems, including applying necessary operating system updates. Customers do not have direct access to manage or update the operating systems on Lambda@Edge or other AWS services.

It’s important to understand the shared responsibility model to ensure proper understanding of the division of responsibilities between AWS and the customer when it comes to security and management of AWS services.

Explanation 2

The correct answer is D. Implement multi-factor authentication (MFA) for IAM user accounts is a customer responsibility according to the AWS shared responsibility model.

Explanation:

• Implement multi-factor authentication (MFA) for IAM user accounts: AWS Identity and Access Management (IAM) is a service that enables customers to manage access to AWS services and resources securely. Customers can create and manage IAM users and groups, and use permissions to allow and deny their access to AWS resources. Customers are responsible for managing the security of their IAM user accounts, including implementing MFA, which is an optional security feature that adds extra protection to the sign-in process. MFA requires users to enter a unique authentication code from an approved device or SMS text message when they sign in to their AWS account.
• Apply security patches for Amazon S3 infrastructure devices: Amazon S3 is an object storage service that offers industry-leading scalability, data availability, security, and performance. AWS is responsible for protecting the infrastructure that runs Amazon S3, including the hardware, software, networking, and facilities. AWS also applies security patches and updates to the infrastructure devices that support Amazon S3. Customers do not have access to these devices and are not responsible for patching them.
• Provide physical security for AWS datacenters: AWS operates, manages, and controls the components from the host operating system and virtualization layer down to the physical security of the facilities in which the service operates. AWS datacenters are housed in nondescript facilities, and critical facilities have extensive setback and military grade perimeter control berms as well as other natural boundary protection. Physical access is strictly controlled both at the perimeter and at building ingress points by professional security staff utilizing video surveillance, state of the art intrusion detection systems, and other electronic means. Customers do not have physical access to AWS datacenters and are not responsible for providing physical security for them.
• Install operating system updates on Lambda@Edge: Lambda@Edge is a feature of AWS Lambda that lets customers run code closer to users of their application, which improves performance and reduces latency. Customers can use Lambda@Edge to customize the content that CloudFront delivers, executing the functions in AWS locations globally without provisioning or managing servers. AWS is responsible for managing the underlying infrastructure for Lambda@Edge, including the operating system updates. Customers do not have access to the operating system and are not responsible for installing updates on it.

Explanation 3

The customer responsibility according to the AWS shared responsibility model among the given options is D. Implement multi-factor authentication (MFA) for IAM user accounts.

Under the AWS shared responsibility model, security and compliance is a shared responsibility between AWS and the customer. While AWS is responsible for the security “of” the cloud, customers assume responsibility for their security “in” the cloud. Implementing multi-factor authentication (MFA) for IAM user accounts falls under the “security in the cloud” category which is the purview of the customer. Customers are responsible for managing their data (including encryption options), setting up the correct permissions with IAM, and using MFA.

Looking at the other options:

A. AWS is responsible for ensuring the security patches for its infrastructure services including Amazon S3.

B. Providing physical security for AWS datacenters is the responsibility of AWS, not the customer.

C. AWS takes responsibility for operating system updates and maintenance on managed services like Lambda@Edge. Customers just need to focus on their application code.

Explanation 4

According to the AWS shared responsibility model, customers are responsible for the following:

• Implementing multi-factor authentication (MFA) for IAM user accounts
• Providing physical security for AWS datacenters

Applying security patches for Amazon S3 infrastructure devices is not a customer responsibility according to the AWS shared responsibility model. Installing operating system updates on Lambda@Edge is not a customer responsibility according to the AWS shared responsibility model.

Explanation 5

The correct answer is D. Implement multi-factor authentication (MFA) for IAM user accounts.

The AWS shared responsibility model divides the responsibility for security between AWS and its customers. AWS is responsible for the security of the underlying infrastructure, such as the physical security of the data centers and the operating system of the virtual machines. Customers are responsible for the security of the data and applications that they run on AWS, such as implementing MFA for IAM user accounts.

Here is a breakdown of the responsibilities of each party under the AWS shared responsibility model:

AWS:

• Physical security of the data centers
• Operating system of the virtual machines
• Networking infrastructure
• Disaster recovery
• Compliance with industry regulations

Customer:

• Data security
• Application security
• IAM user management
• Security of workloads
• Compliance with organizational policies

Explanation 6

According to the AWS shared responsibility model, the customer is responsible for the management of the guest operating system (including updates and security patches) as well as implementing multi-factor authentication (MFA) for IAM user accounts. Therefore, the correct answer is D. Implement multi-factor authentication (MFA) for IAM user accounts.

Explanation 7

The correct answer is D. Implement multi-factor authentication (MFA) for IAM user accounts.

The AWS shared responsibility model divides the responsibility for security between AWS and its customers. AWS is responsible for the security of the underlying infrastructure, while customers are responsible for the security of their data and applications.

• Apply security patches for Amazon S3 infrastructure devices: This is a responsibility of AWS, as Amazon S3 is a managed service.
• Provide physical security for AWS datacenters: This is also a responsibility of AWS, as AWS datacenters are owned and operated by AWS.
• Install operating system updates on Lambda@Edge: This is a responsibility of the customer, as Lambda@Edge is a customer-managed service.

Here are some other customer responsibilities under the AWS shared responsibility model:

• Configuring and managing access control
• Protecting data in transit and at rest
• Monitoring and auditing activity
• Staying up-to-date on security best practices

Explanation 8

The correct answer is D: Implement multi-factor authentication (MFA) for IAM user accounts.

According to the AWS shared responsibility model, customers are responsible for the security of their own data and applications, while AWS is responsible for the security of the underlying infrastructure. This includes implementing security measures such as MFA for IAM user accounts to protect against unauthorized access.

Explanation 9

The correct answer is D. Implement multi-factor authentication (MFA) for IAM user accounts.

The AWS shared responsibility model divides the responsibility for security between AWS and its customers. AWS is responsible for the security of the underlying infrastructure, such as the physical security of the data centers and the application of security patches to infrastructure devices. Customers are responsible for the security of the data and applications that they run on AWS, including the configuration of IAM user accounts and the implementation of MFA.

Explanation 10

According to the AWS shared responsibility model, the customer is responsible for the following:

D. Implement multi-factor authentication (MFA) for IAM user accounts.

In the AWS shared responsibility model, AWS provides a highly secure and scalable infrastructure, but the customer is responsible for securing their own applications, data, and workloads running on AWS. This includes implementing security controls and best practices, such as multi-factor authentication (MFA), to protect their IAM user accounts and access to AWS resources.

Here’s why option D is the correct answer:

A. Apply security patches for Amazon S3 infrastructure devices: While AWS provides security patches and maintenance for the underlying infrastructure, such as Amazon S3, the customer is responsible for applying security patches for their own data and applications stored in S3.

B. Provide physical security for AWS datacenters: AWS provides secure datacenters with on-site security personnel, cameras, and other security measures. However, the customer is responsible for securing their own data and applications, which may involve implementing additional security controls such as encryption.

C. Install operating system updates on Lambda@Edge: Lambda@Edge is a serverless compute service provided by AWS, and the customer is responsible for installing operating system updates on their Lambda functions.

In summary, the customer is responsible for securing their own applications, data, and workloads running on AWS, while AWS provides the underlying infrastructure and security measures to ensure the security of their resources.

Explanation 11

Answer: D. Implement multi-factor authentication (MFA) for IAM user accounts.

Explanation: The AWS shared responsibility model defines the division of responsibilities between AWS and the customer for security and compliance. AWS is responsible for the security of the cloud, which includes the physical infrastructure, hardware, software, and facilities that run AWS services. The customer is responsible for the security in the cloud, which includes the configuration and management of their data, applications, operating systems, network, and firewall settings.

One of the customer responsibilities is to implement identity and access management (IAM) policies and controls to protect their AWS resources and data. This includes creating IAM user accounts, groups, roles, and permissions, as well as enabling multi-factor authentication (MFA) for enhanced security. MFA is a method of verifying a user’s identity by requiring two or more pieces of evidence, such as a password and a code sent to a device. MFA can help prevent unauthorized access to AWS resources and data by adding an extra layer of protection.

The other options are incorrect because they are AWS responsibilities according to the shared responsibility model. AWS is responsible for applying security patches for Amazon S3 infrastructure devices, providing physical security for AWS datacenters, and installing operating system updates on Lambda@Edge.

Explanation 12

According to the AWS shared responsibility model, the customer is responsible for:

D. Implementing multi-factor authentication (MFA) for IAM user accounts.

The AWS shared responsibility model defines the responsibilities of AWS and the customer in terms of security, privacy, and compliance for AWS services. The model is based on the principle of “shared responsibility,” where AWS is responsible for the security of the cloud, and the customer is responsible for the security of their data and workloads.

Under this model, the customer is responsible for implementing security measures such as MFA for IAM user accounts, as well as for the security of their data and workloads. AWS provides security features and tools to help customers meet these responsibilities, but the ultimate responsibility lies with the customer.

The other options listed are not correct because:

A. Apply security patches for Amazon S3 infrastructure devices is the responsibility of AWS, as part of their responsibility for the security of the cloud.

B. Provide physical security for AWS datacenters is the responsibility of AWS, as they own and operate the datacenters.

C. Install operating system updates on Lambda@Edge is not a customer responsibility, as Lambda@Edge is a serverless computing service that is managed and maintained by AWS.

Therefore, the correct answer is D. Implement multi-factor authentication (MFA) for IAM user accounts.

Explanation 13

D. Implement multi-factor authentication (MFA) for IAM user accounts is a customer responsibility according to the AWS shared responsibility model.

Explanation:

A. Applying security patches for Amazon S3 infrastructure devices is not a customer responsibility. AWS is responsible for securing the underlying infrastructure of services like Amazon S3. Customers are responsible for configuring access controls and security settings for their data stored in S3.

B. Providing physical security for AWS datacenters is entirely the responsibility of AWS. AWS maintains physical security, environmental controls, and access controls to its datacenters, and customers do not have a role in providing physical security for these facilities.

C. Installing operating system updates on Lambda@Edge is also not a customer responsibility. AWS manages the underlying infrastructure and software updates for services like Lambda@Edge. Customers are responsible for writing and deploying their Lambda functions securely.

D. Implementing multi-factor authentication (MFA) for IAM user accounts is indeed a customer responsibility. While AWS manages the security of its infrastructure, customers are responsible for configuring and enforcing security measures for their AWS accounts, including enabling MFA for added authentication security.

In summary, according to the AWS shared responsibility model, implementing multi-factor authentication (MFA) for IAM user accounts (Option D) is a customer responsibility.

Explanation 14

According to the AWS shared responsibility model, the customer is responsible for implementing multi-factor authentication (MFA) for IAM user accounts. This is stated in the AWS documentation as part of the “Identity and Access Management” section of the shared responsibility model.

Therefore, the correct answer is (D) Implement multi-factor authentication (MFA) for IAM user accounts.

Here’s a detailed explanation of the other options:

(A) Apply security patches for Amazon S3 infrastructure devices – This is incorrect because AWS is responsible for maintaining and patching the underlying infrastructure, including security patches for devices such as S3.

(B) Provide physical security for AWS datacenters – This is incorrect because physical security for AWS datacenters is the responsibility of AWS.

(C) Install operating system updates on Lambda@Edge – This is incorrect because Lambda@Edge is a serverless computing service, and customers are not responsible for installing operating system updates on AWS-managed infrastructure.

In summary, customers are responsible for implementing MFA for IAM user accounts, while AWS is responsible for maintaining and patching the underlying infrastructure, providing physical security for datacenters, and managing serverless computing services like Lambda@Edge.

Explanation 15

According to the AWS shared responsibility model, customers are responsible for certain aspects of their AWS environment. Let’s go through each option and determine which one aligns with customer responsibilities:

A. Apply security patches for Amazon S3 infrastructure devices.
This responsibility falls under the purview of AWS. Amazon S3 is a managed service, and AWS is responsible for maintaining and patching the underlying infrastructure. Therefore, customers are not responsible for applying security patches for Amazon S3 infrastructure devices.

B. Provide physical security for AWS datacenters.
Physical security of AWS datacenters is the responsibility of AWS. They have robust security measures in place to protect their datacenters. Customers do not have access to AWS datacenters and are not responsible for their physical security.

C. Install operating system updates on Lambda@Edge.
Lambda@Edge is a serverless compute service provided by AWS. AWS manages the underlying infrastructure, including operating system updates. Therefore, customers are not responsible for installing operating system updates on Lambda@Edge.

D. Implement multi-factor authentication (MFA) for IAM user accounts.
This option aligns with customer responsibilities. According to the shared responsibility model, customers are responsible for implementing security measures such as multi-factor authentication (MFA) for their IAM (Identity and Access Management) user accounts. MFA adds an extra layer of security by requiring users to provide additional authentication factors, such as a code from a mobile app or a physical token, in addition to their password.

In conclusion, the correct answer is D. Implement multi-factor authentication (MFA) for IAM user accounts. This is a customer responsibility according to the AWS shared responsibility model.

Explanation 16

According to the AWS shared responsibility model, customer responsibilities vary depending on the type of AWS service being used. Let’s analyze each option to determine which one aligns with a customer responsibility:

A. Apply security patches for Amazon S3 infrastructure devices:
This option refers to the responsibility of maintaining the underlying infrastructure of Amazon S3, such as servers and network devices. However, in the AWS shared responsibility model, infrastructure management and security patches for the underlying infrastructure are handled by AWS. Therefore, this option is not a customer responsibility.

B. Provide physical security for AWS datacenters:
Physical security, including access controls, surveillance, and securing the AWS datacenters, is the responsibility of AWS, not the customer. AWS ensures the physical security of their datacenters to protect customer data.

C. Install operating system updates on Lambda@Edge:
Lambda@Edge is an AWS service that allows you to run code in response to CloudFront events. However, the responsibility for managing the underlying infrastructure, including installing operating system updates, falls under the purview of AWS. Customers are not responsible for installing operating system updates on Lambda@Edge.

D. Implement multi-factor authentication (MFA) for IAM user accounts:
Multi-factor authentication (MFA) is a security measure that adds an extra layer of protection to user accounts. In the AWS shared responsibility model, the customer is responsible for implementing security measures at the user and application level. This includes enabling and configuring MFA for IAM user accounts. Therefore, option D is a customer responsibility.

In conclusion, the correct answer is:

D. Implement multi-factor authentication (MFA) for IAM user accounts.

Explanation: The AWS shared responsibility model defines the division of security responsibilities between AWS and the customer. While AWS manages the security of the cloud infrastructure, customers are responsible for implementing security measures at the user and application level, such as configuring MFA for IAM user accounts.

Explanation 17

The correct answer is D. Implement multi-factor authentication (MFA) for IAM user accounts.

The explanation is as follows:

• According to the AWS shared responsibility model, security and compliance are shared responsibilities between AWS and the customer. This means that AWS is responsible for the security of the cloud, while the customer is responsible for the security in the cloud.
• The security of the cloud refers to the protection of the infrastructure that runs all of the services offered in the AWS Cloud, such as hardware, software, networking, and facilities. AWS is responsible for managing and controlling these components, as well as providing tools and features that customers can use to enhance their security.
• The security in the cloud refers to the protection of the customer data, applications, and resources that are hosted on AWS, such as operating systems, platforms, and configurations. The customer is responsible for managing and securing these components, as well as using the tools and features that AWS provides to comply with their specific requirements.
• Implementing multi-factor authentication (MFA) for IAM user accounts is a customer responsibility according to the AWS shared responsibility model, because it is part of the security in the cloud. MFA is a method of verifying a user’s identity by requiring two or more pieces of evidence, such as a password and a code from a device. MFA can help customers prevent unauthorized access to their AWS resources and data by adding an extra layer of security to their IAM user accounts.

The other options are not customer responsibilities according to the AWS shared responsibility model, because they are part of the security of the cloud. These are:

• Applying security patches for Amazon S3 infrastructure devices (option A), which is an AWS responsibility because it involves maintaining and updating the hardware and software that run Amazon S3, a storage service offered by AWS.
• Providing physical security for AWS datacenters (option B), which is an AWS responsibility because it involves safeguarding the facilities where AWS services operate from unauthorized access, damage, or interference.
• Installing operating system updates on Lambda@Edge (option C), which is an AWS responsibility because it involves managing and updating the operating system that runs Lambda@Edge, a service that allows customers to run Lambda functions at AWS edge locations.

Explanation 18

Here is the detailed answer with explanation for the question:

The AWS shared responsibility model defines that AWS is responsible for security of the cloud (securing the hardware, software, networking etc. that run all AWS services) and the customer is responsible for security in the cloud (securing customer content, platforms, applications, systems and networks that customer uses on AWS).

Option A is incorrect because Amazon is responsible for applying security patches for Amazon S3 infrastructure devices which are under AWS responsibility according to the shared responsibility model.

Option B is incorrect because AWS is responsible for providing physical security for their datacenters which are part of AWS responsibility.

Option C is incorrect because Lambda@Edge functions run within the AWS environment and hence operating system updates on Lambda@Edge come under AWS responsibility.

Option D is the correct answer. Implementing multi-factor authentication (MFA) for IAM user accounts is a customer responsibility according to the AWS shared responsibility model. Security of customer’s IAM user accounts, policies and credentials come under the responsibility of the customer.

Therefore, the correct option is D – Implement multi-factor authentication (MFA) for IAM user accounts. This is considered a customer responsibility according to the AWS shared responsibility model.

Explanation 19

The customer responsibility according to the AWS shared responsibility model among the options provided is D. Implement multi-factor authentication (MFA) for IAM user accounts.

According to the AWS shared responsibility model, security “in” the cloud is the responsibility of the customer, while security “of” the cloud is the responsibility of AWS.

Implementing multi-factor authentication (MFA) for IAM user accounts falls under security “in” the cloud. This is because MFA is a method of verifying a user’s identity, which is directly related to how customers manage their own data, identities, applications, and permissions within AWS services.

AWS provides the tools and features needed to implement MFA, but it’s up to the customer to actually enable and manage it. This allows customers to have control over their own security measures and to implement them in a way that best suits their specific needs.

Explanation 20

The correct answer is D.

According to the AWS Shared Responsibility Model, the customer is responsible for managing their data and identities, including implementing multi-factor authentication (MFA) for IAM user accounts.

In detail:

• AWS is responsible for securing the underlying infrastructure and foundation services. This includes facilities, physical security of hardware, networking, software, etc.
• The customer is responsible for securing the things they put in the cloud or connect to the cloud. This includes implementing MFA, applying security patches, encryption, managing identities and credentials, etc.
• Option A refers to securing the underlying S3 infrastructure which is AWS’s responsibility.
• Option B refers to physical security of AWS data centers which is AWS’s responsibility.
• Option C refers to managing the Lambda@Edge runtime which is AWS’s responsibility.
• Option D refers to implementing MFA for IAM users which is the customer’s responsibility according to the shared responsibility model. Therefore, D is the correct option.

Explanation 21

According to the AWS shared responsibility model, the division of security responsibilities is split between AWS and the customer. AWS is responsible for the security of the cloud infrastructure, while the customer is responsible for the security of their applications and data in the cloud.

Out of the given options, the correct answer is:

D. Implement multi-factor authentication (MFA) for IAM user accounts.

Explanation:
MFA (Multi-Factor Authentication) is a security measure that requires users to provide additional authentication factors, such as a code from a mobile app or a physical token, in addition to their username and password. It provides an extra layer of security to protect user accounts from unauthorized access.

In the AWS shared responsibility model, the implementation and management of access controls, including MFA, is the responsibility of the customer. This means that customers are responsible for configuring MFA for their IAM (Identity and Access Management) user accounts to enhance the security of their AWS resources.

Let’s go through the other options to understand why they are not the correct answer:

A. Apply security patches for Amazon S3 infrastructure devices:
This responsibility falls under the purview of AWS. AWS is responsible for maintaining and patching the underlying infrastructure and services, including Amazon S3. Customers do not have direct control over applying security patches to the infrastructure devices.

B. Provide physical security for AWS datacenters:
Physical security of AWS datacenters is entirely managed and maintained by AWS. AWS ensures that their datacenters are protected from physical threats, such as unauthorized access, theft, and environmental hazards. Customers are not responsible for providing physical security for AWS datacenters.

C. Install operating system updates on Lambda@Edge:
Lambda@Edge is a service provided by AWS, and as such, AWS is responsible for managing and updating the underlying infrastructure, including operating system updates. Customers do not have direct control over installing operating system updates on Lambda@Edge.

To summarize, the customer responsibility according to the AWS shared responsibility model, out of the given options, is to implement multi-factor authentication (MFA) for IAM user accounts. This responsibility helps ensure the security of user accounts and adds an extra layer of protection to the customer’s AWS resources.

Reference

• Shared Responsibility Model – Amazon Web Services (AWS)
• AWS Shared Responsibility Model – Introduction to DevOps on AWS (amazon.com)
• Shared responsibility model – Amazon Web Services: Risk and Compliance

Amazon AWS Certified Cloud Practitioner certification exam practice question and answer (Q&A) dump with detail explanation and reference available free, helpful to pass the Amazon AWS Certified Cloud Practitioner exam and earn Amazon AWS Certified Cloud Practitioner certification.

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