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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Design Resilient Architectures | 26% | - Design highly available and/or fault-tolerant architectures
|
| Topic 2: Design High-Performing Architectures | 24% | - Determine high-performing and/or scalable storage solutions
|
| Topic 3: Design Secure Architectures | 30% | - Design secure workloads and applications
|
| Topic 4: Design Cost-Optimized Architectures | 20% | - Design cost-optimized storage solutions
|
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NEW QUESTION # 163
A solutions architect must migrate a Windows Internet Information Services (IIS) web application to AWS The application currently relies on a file share hosted in the user's on-premises network-attached storage (NAS) The solutions architect has proposed migrating the MS web servers to Amazon EC2 instances in multiple Availability Zones that are connected to the storage solution, and configuring an Elastic Load Balancer attached to the instances Which replacement to the on-premises file share is MOST resilient and durable?
Answer: B
Explanation:
Explanation
This answer is correct because it provides a resilient and durable replacement for the on-premises file share that is compatible with Windows IIS web servers. Amazon FSx for Windows File Server is a fully managed service that provides shared file storage built on Windows Server. It supports the SMB protocol and integrates with Microsoft Active Directory, which enables seamless access and authentication for Windows-based applications. Amazon FSx for Windows File Server also offers the following benefits:
* Resilience: Amazon FSx for Windows File Server can be deployed in multiple Availability Zones, which provides high availability and failover protection. It also supports automatic backups and restores, as well as self-healing features that detect and correct issues.
* Durability: Amazon FSx for Windows File Server replicates data within and across Availability Zones, and stores data on highly durable storage devices. It also supports encryption at rest and in transit, as well as file access auditing and data deduplication.
* Performance: Amazon FSx for Windows File Server delivers consistent sub-millisecond latencies and high throughput for file operations. It also supports SSD storage, native Windows features such as Distributed File System (DFS) Namespaces and Replication, and user-driven performance scaling.
References:
* Amazon FSx for Windows File Server
* Using Microsoft Windows file shares
NEW QUESTION # 164
A company is developing a new application that uses a relational database to store user data and application configurations. The company expects the application to have steady user growth. The company expects the database usage to be variable and read-heavy, with occasional writes.
The company wants to cost-optimize the database solution. The company wants to use an AWS managed database solution that will provide the necessary performance.
Which solution will meet these requirements MOST cost-effectively?
Answer: A
Explanation:
Amazon Aurora Serverless is a cost-effective, on-demand, autoscaling configuration for Amazon Aurora. It automatically adjusts the database's capacity based on the current demand, which is ideal for workloads with variable and unpredictable usage patterns. Since the application is expected to be read-heavy with occasional writes and steady growth, Aurora Serverless can provide the necessary performance without requiring the management of database instances.
* Cost-Optimization: Aurora Serverless only charges for the database capacity you use, making it a more cost-effective solution compared to always running provisioned database instances, especially for workloads with fluctuating demand.
* Scalability: It automatically scales database capacity up or down based on actual usage, ensuring that you always have the right amount of resources available.
* Performance: Aurora Serverless is built on the same underlying storage as Amazon Aurora, providing high performance and availability.
* Why Not Other Options?:
* Option A (RDS with Provisioned IOPS SSD): While Provisioned IOPS SSD ensures consistent performance, it is generally more expensive and less flexible compared to the autoscaling nature of Aurora Serverless.
* Option C (DynamoDB with On-Demand Capacity): DynamoDB is a NoSQL database and may not be the best fit for applications requiring relational database features.
* Option D (RDS with Magnetic Storage and Read Replicas): Magnetic storage is outdated and generally slower. While read replicas help with read-heavy workloads, the overall performance might not be optimal, and magnetic storage doesn't provide the necessary performance.
AWS References:
* Amazon Aurora Serverless - Information on how Aurora Serverless works and its use cases.
* Amazon Aurora Pricing - Details on the cost-effectiveness of Aurora Serverless.
NEW QUESTION # 165
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: B
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 # 166
A company has a distributed application in AWS that periodically processes large volumes of data across multiple instances. The Solutions Architect designed the application to recover gracefully from any instance failures. He is then required to launch the application in the most cost-effective way.
Which type of EC2 instance will meet this requirement?
Answer: C
Explanation:
You require an EC2 instance that is the most cost-effective among other types. In addition, the application it will host is designed to gracefully recover in case of instance failures.
In terms of cost-effectiveness, Spot and Reserved instances are the top options. And since the application can gracefully recover from instance failures, the Spot instance is the best option for this case as it is the cheapest type of EC2 instance. Remember that when you use Spot Instances, there will be interruptions. Amazon EC2 can interrupt your Spot Instance when the Spot price exceeds your maximum price, when the demand for Spot Instances rise, or when the supply of Spot Instances decreases.
Hence, the correct answer is: Spot Instances.
Reserved instances is incorrect. Although you can also use reserved instances to save costs, it entails a commitment of 1-year or 3-year terms of usage. Since your processes only run periodically, you won't be able to maximize the discounted price of using reserved instances.
Dedicated instances and On-Demand instances are also incorrect because Dedicated and on-demand instances are not a cost-effective solution to use for your application.
Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/how-spot-instances-work.html Check out this Amazon EC2 Cheat Sheet:
https://tutorialsdojo.com/amazon-elastic-compute-cloud-amazon-ec2/
Here is an in-depth look at Spot Instances:
https://youtu.be/PKvss-RgSjI
NEW QUESTION # 167
A company wants to manage Amazon Machine Images (AMIs). The company currently copies AMIs to the same AWS Region where the AMIs were created. The company needs to design an application that captures AWS API calls and sends alerts whenever the Amazon EC2 CreateImage API operation is called within the company's account.
Which solution will meet these requirements with the LEAST operational overhead?
Answer: A
Explanation:
https://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/monitor-ami-events.html#:~:text=For%20example%2C%20you%20can%20create%20an%20EventBridge%20rule%20that%20detects%20when%20the%20AMI%20creation%20process%20has%20completed%20and%20then%20invokes%20an%20Amazon%20SNS%20topic%20to%20send%20an%20email%20notification%20to%20you.
NEW QUESTION # 168
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