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NEW QUESTION 49
A company is building an application in the AWS Cloud. The application will store data in Amazon S3 buckets in two AWS Regions. The company must use an AWS Key Management Service (AWS KMS) customer managed key to encrypt all data that is stored in the S3 buckets. The data in both S3 buckets must be encrypted and decrypted with the same KMS key. The data and the key must be stored in each of the two Regions.
Which solution will meet these requirements with the LEAST operational overhead?
Answer: D
Explanation:
From https://docs.aws.amazon.com/kms/latest/developerguide/custom-key-store-overview.html For most users, the default AWS KMS key store, which is protected by FIPS 140-2 validated cryptographic modules, fulfills their security requirements. There is no need to add an extra layer of maintenance responsibility or a dependency on an additional service. However, you might consider creating a custom key store if your organization has any of the following requirements: Key material cannot be stored in a shared environment. Key material must be subject to a secondary, independent audit path. The HSMs that generate and store key material must be certified at FIPS 140-2 Level 3. https://docs.aws.amazon.com/kms/latest/developerguide/custom-key-store-overview.html
NEW QUESTION 50
A startup needs to use a shared file system for its .NET web application running on an Amazon EC2 Windows instance. The file system must provide a high level of throughput and IOPS that can also be integrated with Microsoft Active Directory.
Which is the MOST suitable service that you should use to achieve this requirement?
Answer: D
Explanation:
Amazon FSx for Windows File Server provides fully managed, highly reliable, and scalable file storage accessible over the industry-standard Service Message Block (SMB) protocol. It is built on Windows Server, delivering a wide range of administrative features such as user quotas, end-user file restore, and Microsoft Active Directory (AD) integration.
Amazon FSx supports the use of Microsoft's Distributed File System (DFS) Namespaces to scale-out performance across multiple file systems in the same namespace up to tens of Gbps and millions of IOPS.
The key phrases in this scenario are "file system" and "Active Directory integration." You need to implement a solution that will meet these requirements. Among the options given, the possible answers are FSx Windows File Server and File Gateway. But you need to consider that the question also states that you need to provide a high level of throughput and IOPS. Amazon FSx Windows File Server can scale-out storage to hundreds of petabytes of data with tens of GB/s of throughput performance and millions of IOPS.
Hence, the correct answer is: Amazon FSx for Windows File Server.
Amazon EBS Provisioned IOPS SSD volumes is incorrect because this is just a block storage volume and not a full-fledged file system. Amazon EBS is primarily used as persistent block storage for EC2 instances.
Amazon Elastic File System is incorrect because it is stated in the scenario that the startup uses an Amazon EC2 Windows instance. Remember that Amazon EFS can only handle Linux workloads.
AWS Storage Gateway - File Gateway is incorrect. Although it can be used as a shared file system for Windows and can also be integrated with Microsoft Active Directory, Amazon FSx still has a higher level of throughput and IOPS compared with AWS Storage Gateway. Amazon FSX is capable of providing hundreds of thousands (or even millions) of IOPS.
References:
https://aws.amazon.com/fsx/windows/faqs/ https://docs.aws.amazon.com/fsx/latest/WindowsGuide/what- is.html Check out this Amazon FSx Cheat Sheet: https://tutorialsdojo.com/amazon-fsx/
NEW QUESTION 51
A company has an application architecture that stores both the access key ID and the secret access key in a plain text file on a custom Amazon Machine Image (AMI). The EC2 instances, which are created by using this AMI, are using the stored access keys to connect to a DynamoDB table.
What should the Solutions Architect do to make the current architecture more secure?
Answer: A
Explanation:
You should use an IAM role to manage temporary credentials for applications that run on an EC2 instance. When you use an IAM role, you don't have to distribute long-term credentials (such as a user name and password or access keys) to an EC2 instance.
Instead, the role supplies temporary permissions that applications can use when they make calls to other AWS resources. When you launch an EC2 instance, you specify an IAM role to associate with the instance. Applications that run on the instance can then use the role-supplied temporary credentials to sign API requests.
Hence, the best option here is to remove the stored access keys first in the AMI. Then, create a new IAM role with permissions to access the DynamoDB table and assign it to the EC2 instances.
Putting the access keys in Amazon Glacier or in an Amazon S3 bucket are incorrect because S3 and Glacier are mainly used as a storage option. It is better to use an IAM role instead of storing access keys in these storage services.
The option that says: Do nothing. The architecture is already secure because the access keys are already in the Amazon Machine Image is incorrect because you can make the architecture more secure by using IAM.
Explanation:
Reference:
https://docs.aws.amazon.com/IAM/latest/UserGuide/id_roles_use_switch-role-ec2.html Check out this AWS Identity & Access Management (IAM) Cheat Sheet: https://tutorialsdojo.com/aws-identity-and- access-management-iam/
NEW QUESTION 52
A large multinational investment bank has a web application that requires a minimum of 4 EC2 instances to run to ensure that it can cater to its users across the globe. You are instructed to ensure fault tolerance of this system.
Which of the following is the best option?
Answer: C
Explanation:
Fault Tolerance is the ability of a system to remain in operation even if some of the components used to build the system fail. In AWS, this means that in the event of server fault or system failures, the number of running EC2 instances should not fall below the minimum number of instances required by the system for it to work properly. So if the application requires a minimum of 4 instances, there should be at least 4 instances running in case there is an outage in one of the Availability Zones or if there are server issues.
One of the differences between Fault Tolerance and High Availability is that the former refers to the minimum number of running instances. For example, you have a system that requires a minimum of 4 running instances and currently has 6 running instances deployed in two Availability Zones. There was a component failure in one of the Availability Zones which knocks out 3 instances. In this case, the system can still be regarded as Highly Available since there are still instances running that can accommodate the requests. However, it is not Fault-Tolerant since the required minimum of four instances has not been met.
Hence, the correct answer is: Deploy an Auto Scaling group with 2 instances in each of 3 Availability Zones behind an Application Load Balancer.
The option that says: Deploy an Auto Scaling group with 2 instances in each of 2 Availability Zones behind an Application Load Balancer is incorrect because if one Availability Zone went out, there will only be 2 running instances available out of the required 4 minimum instances. Although the Auto Scaling group can spin up another 2 instances, the fault tolerance of the web application has already been compromised.
The option that says: Deploy an Auto Scaling group with 4 instances in one Availability Zone behind an Application Load Balancer is incorrect because if the Availability Zone went out, there will be no running instance available to accommodate the request.
The option that says: Deploy an Auto Scaling group with 1 instance in each of 4 Availability Zones behind an Application Load Balancer is incorrect because if one Availability Zone went out, there will only be 3 instances available to accommodate the request. References:
https://media.amazonwebservices.com/AWS_Building_Fault_Tolerant_Applications.pdf
https://d1.awsstatic.com/whitepapers/aws-building-fault-tolerant-applications.pdf AWS Overview Cheat Sheets:
https://tutorialsdojo.com/aws-cheat-sheets-overview/
Tutorials Dojo's AWS Certified Solutions Architect Associate Exam Study Guide:
https://tutorialsdojo.com/aws-certified-solutions-architect-associate/
NEW QUESTION 53
A company s order system sends requests from clients to Amazon EC2 instances The EC2 instances process ttie orders and men store the orders in a database on Amazon RDS Users report that they must reprocess orders when the system fails. The company wants a resilient solution that can process orders automatically it a system outage occurs.
What shoukl a solutions architect do to meet these requirements?
Answer: C
NEW QUESTION 54
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