200-350

A company is storing data that will not be frequently accessed in the AWS Cloud. If the company needs to access the data, the data needs to be retrieved within 12 hours. The company wants a solution that is cost-effective for storage costs for each gigabyte.

Which Amazon S3 storage class will meet these requirements?

• • A. S3 Standard

• • B. S3 Glacier Flexible Retrieval

• • C. S3 One Zone-Infrequent Access (S3 One Zone-IA)

• • D. S3 Standard-Infrequent Access (S3 Standard-IA)

Answer explanation

The correct answer is:

B. S3 Glacier Flexible Retrieval

Explanation:

Amazon S3 Glacier Flexible Retrieval is designed for long-term storage of infrequently accessed data. It offers a cost-effective solution with the capability to retrieve data within 12 hours, meeting the requirement for occasional access to the stored data. This storage class is suitable for use cases where retrieval times can be flexible, making it cost-effective for archival purposes.

### Incorrect Answers:

A. S3 Standard

- Explanation: S3 Standard is designed for frequently accessed data. It provides low latency and high throughput but comes with higher storage costs compared to other storage classes optimized for infrequent access or archival.

C. S3 One Zone-Infrequent Access (S3 One Zone-IA)

- Explanation: S3 One Zone-IA is a cost-effective storage class for infrequently accessed data, but it stores data in a single Availability Zone. While it has lower costs compared to S3 Standard-IA, it does not meet the requirement for archival storage with 12-hour retrieval times.

D. S3 Standard-Infrequent Access (S3 Standard-IA)

- Explanation: S3 Standard-IA is designed for data that is accessed less frequently but still requires rapid access when needed. It has higher storage costs compared to S3 Glacier Flexible Retrieval and is not as cost-effective for long-term archival storage where retrieval times of up to 12 hours are acceptable.

Therefore, B. S3 Glacier Flexible Retrieval is the most appropriate storage class for storing data that will not be frequently accessed and needs to be retrieved within 12 hours, while also being cost-effective.

Which AWS service or resource can be used to identify services that have been used by a user within a specified date range?

• • A. Amazon S3 access control lists (ACLs)

• • B. AWS Certificate Manager (ACM)

• • C. Network Access Analyzer

• • D. AWS Identity and Access Management Access Analyzer

Answer explanation

The correct answer is:

D. AWS Identity and Access Management Access Analyzer

Explanation:

AWS Identity and Access Management (IAM) Access Analyzer helps you identify resources in your organization and accounts, such as Amazon S3 buckets or IAM roles, that are shared with an external entity. However, for tracking specific service usage by a user within a specified date range, AWS CloudTrail would be more appropriate. CloudTrail logs all API calls made in your account, including the identity of the user who made the call, the time of the call, and the specific services used.

### Incorrect Answers:

A. Amazon S3 access control lists (ACLs)

- Explanation: Amazon S3 access control lists (ACLs) are used to manage access permissions for S3 buckets and objects. They do not track usage or provide information about services used by a user.

B. AWS Certificate Manager (ACM)

- Explanation: AWS Certificate Manager (ACM) is used to manage SSL/TLS certificates for AWS services. It does not track usage or provide information about services used by a user.

C. Network Access Analyzer

- Explanation: Network Access Analyzer is a tool for analyzing network paths and security configurations within an AWS environment. It does not track service usage by users.

Therefore, while IAM Access Analyzer helps with identifying external access, AWS CloudTrail would be the best tool to identify services used by a user within a specified date range, even though it wasn't listed as an option. If we need to stick to the options provided, the closest fit would be IAM Access Analyzer, but it's important to note the distinction in their primary functions.

A company needs to engage third-party consultants to help maintain and support its AWS environment and the company’s business needs.

Which AWS service or resource will meet these requirements?

• • A. AWS Support

• • B. AWS Organizations

• • C. AWS Service Catalog

• • D. AWS Partner Network (APN)

Answer explanation

The correct answer is:

D. AWS Partner Network (APN)

Explanation:

The AWS Partner Network (APN) is a global program that includes a large network of third-party consultants, technology partners, and service providers who can help businesses manage and support their AWS environments. APN partners offer a range of services, including consulting, migration, and managed services, to help companies achieve their business goals using AWS.

### Incorrect Answers:

A. AWS Support

- Explanation: AWS Support provides technical assistance and troubleshooting for AWS services, but it is not designed for engaging third-party consultants. It is more about providing help and guidance from AWS directly.

B. AWS Organizations

- Explanation: AWS Organizations helps manage multiple AWS accounts within a single organization and provides consolidated billing and policy-based management. It does not provide access to third-party consultants.

C. AWS Service Catalog

- Explanation: AWS Service Catalog allows organizations to create and manage catalogs of IT services that are approved for use on AWS. It is useful for governance and standardization of AWS resources but not for engaging third-party consultants.

Therefore, AWS Partner Network (APN) is the best choice for engaging third-party consultants to help maintain and support a company's AWS environment.

A company wants to create Amazon QuickSight dashboards every week by using its billing data.

Which AWS feature or tool can the company use to meet these requirements?

• • A. AWS Budgets

• • B. AWS Cost Explorer

• • C. AWS Cost and Usage Report

• • D. AWS Cost Anomaly Detection

Answer explanation

The correct answer is:

C. AWS Cost and Usage Report

Explanation:

The AWS Cost and Usage Report provides the most detailed information about your AWS usage and costs. It can generate comprehensive reports that can be used to analyze and track your AWS costs. These reports can then be imported into Amazon QuickSight to create dashboards and visualizations of your billing data on a weekly basis.

### Incorrect Answers:

A. AWS Budgets

- Explanation: AWS Budgets allows you to set custom cost and usage budgets and receive alerts when you exceed those thresholds. It does not provide detailed billing data for creating dashboards.

B. AWS Cost Explorer

- Explanation: AWS Cost Explorer provides tools for viewing and analyzing your AWS costs and usage over time. It offers some visualization features, but it is not as detailed or comprehensive as the AWS Cost and Usage Report for creating weekly dashboards.

D. AWS Cost Anomaly Detection

- Explanation: AWS Cost Anomaly Detection uses machine learning to detect unusual spending patterns and notify you of potential issues. It is useful for monitoring costs but does not provide the detailed data necessary for creating weekly dashboards.

Therefore, the AWS Cost and Usage Report is the best choice for creating detailed, weekly Amazon QuickSight dashboards using billing data.

A company is planning to move data backups to the AWS Cloud. The company needs to replace on-premises storage with storage that is cloud-based but locally cached.

Which AWS service meets these requirements?

• • A. AWS Storage Gateway

• • B. AWS Snowcone

• • C. AWS Backup

• • D. Amazon Elastic File System (Amazon EFS)

Answer explanation

The correct answer is:

A. AWS Storage Gateway

Explanation:

AWS Storage Gateway is a hybrid cloud storage service that enables on-premises applications to seamlessly use AWS cloud storage. It provides a way to connect on-premises environments with cloud-based storage, and it can be configured in various modes including file, volume, and tape gateways. The file and volume gateways support local caching, allowing frequently accessed data to be stored locally for quick access while less frequently accessed data is stored in the cloud.

### Incorrect Answers:

B. AWS Snowcone

- Explanation: AWS Snowcone is a small, portable edge computing and data transfer device. It is used for edge computing and data transfer rather than providing cloud-based storage with local caching capabilities.

C. AWS Backup

- Explanation: AWS Backup is a fully managed service for centralized backup of AWS services. It does not provide local caching or hybrid storage capabilities.

D. Amazon Elastic File System (Amazon EFS)

- Explanation: Amazon EFS is a scalable file storage service for use with AWS Cloud services and on-premises resources. While it offers scalable and shared file storage, it does not provide the local caching capabilities required to replace on-premises storage.

Therefore, AWS Storage Gateway is the appropriate choice for cloud-based storage with local caching capabilities.

A company needs to organize its resources and track AWS costs on a detailed level. The company needs to categorize costs by business department, environment, and application.

Which solution will meet these requirements?

• • A. Access the AWS Cost Management console to organize resources, set an AWS budget, and receive notifications of unintentional usage.

• • B. Use tags to organize the resources. Activate cost allocation tags to track AWS costs on a detailed level.

• • C. Create Amazon CloudWatch dashboards to visually organize and track costs individually.

• • D. Access the AWS Billing and Cost Management dashboard to organize and track resource consumption on a detailed level.

Answer explanation

The correct answer is:

B. Use tags to organize the resources. Activate cost allocation tags to track AWS costs on a detailed level.

Explanation:

Using tags to organize resources is a best practice in AWS for categorizing resources by business department, environment, application, and other criteria. Once the resources are tagged, you can activate cost allocation tags in the AWS Billing and Cost Management console. This allows you to track and allocate costs based on the tags, providing detailed insights into AWS spending across different parts of the organization.

### Incorrect Answers:

A. Access the AWS Cost Management console to organize resources, set an AWS budget, and receive notifications of unintentional usage.

- Explanation: While the AWS Cost Management console provides tools for setting budgets and receiving notifications, it does not offer the granular cost categorization by department, environment, and application that tagging provides.

C. Create Amazon CloudWatch dashboards to visually organize and track costs individually.

- Explanation: Amazon CloudWatch dashboards are useful for monitoring and visualizing resource performance and metrics but are not designed for detailed cost categorization and tracking.

D. Access the AWS Billing and Cost Management dashboard to organize and track resource consumption on a detailed level.

- Explanation: The AWS Billing and Cost Management dashboard provides an overview of costs and usage, but it requires the use of tags to achieve detailed categorization and tracking of costs.

Therefore, using tags and activating cost allocation tags is the best solution for organizing resources and tracking AWS costs on a detailed level by department, environment, and application.

A company needs to plan, schedule, and run hundreds of thousands of computing jobs on AWS.

Which AWS service can the company use to meet this requirement?

• • A. AWS Step Functions

• • B. AWS Service Catalog

• • C. Amazon Simple Queue Service (Amazon SQS)

• • D. AWS Batch

Answer explanation

The correct answer is:

D. AWS Batch

Explanation:

AWS Batch enables developers, scientists, and engineers to easily and efficiently run hundreds of thousands of batch computing jobs on AWS. It dynamically provisions the optimal quantity and type of compute resources (e.g., CPU or memory-optimized instances) based on the volume and specific resource requirements of the batch jobs submitted.

### Incorrect Answers:

A. AWS Step Functions

- Explanation: AWS Step Functions is a workflow service that helps coordinate multiple AWS services into serverless workflows. It's designed for orchestrating tasks and managing state transitions, but not specifically for running a large number of batch computing jobs.

B. AWS Service Catalog

- Explanation: AWS Service Catalog allows organizations to create and manage catalogs of IT services that are approved for use on AWS. It’s used for organizing and managing AWS resources, but not for planning, scheduling, and running computing jobs.

C. Amazon Simple Queue Service (Amazon SQS)

- Explanation: Amazon SQS is a message queuing service that enables decoupling and scaling of microservices, distributed systems, and serverless applications. While it can be used to manage job queues, it doesn't handle the actual computation or scheduling of large-scale computing jobs like AWS Batch does.

Therefore, AWS Batch is the best choice for planning, scheduling, and running hundreds of thousands of computing jobs on AWS.

Which AWS services or features provide high availability and low latency by enabling failover across different AWS Regions? (Choose two.)

• • A. Amazon Route 53

• • B. Network Load Balancer

• • C. Amazon S3 Transfer Acceleration

• • D. AWS Global Accelerator

• • E. Application Load Balancer

Answer explanation

The correct answers are:

A. Amazon Route 53

D. AWS Global Accelerator

Explanation:

A. Amazon Route 53

- High Availability: Amazon Route 53 is a scalable DNS web service designed to route end-user requests to infrastructure in a reliable and highly available manner. It supports failover across multiple AWS Regions.

- Low Latency: Route 53 can use latency-based routing to direct users to the nearest endpoint with the lowest latency, ensuring quicker response times.

D. AWS Global Accelerator

- High Availability: AWS Global Accelerator is a networking service that improves the availability and performance of applications by directing traffic to multiple AWS Regions. It automatically reroutes traffic to healthy endpoints if there's an issue with any endpoint.

- Low Latency: By using the AWS global network, Global Accelerator provides static IP addresses that act as a fixed entry point to your application endpoints (such as load balancers and EC2 instances) in multiple AWS Regions, ensuring low-latency and fast access.

### Incorrect Answers:

B. Network Load Balancer

- Explanation: Network Load Balancer operates at the connection level (Layer 4) to distribute incoming application traffic across multiple targets (such as EC2 instances) within a single region. It does not provide cross-region failover.

C. Amazon S3 Transfer Acceleration

- Explanation: Amazon S3 Transfer Acceleration is designed to optimize data transfer to and from Amazon S3 buckets using the AWS global network. While it improves transfer speeds, it does not specifically provide high availability or failover across multiple AWS Regions.

E. Application Load Balancer

- Explanation: Application Load Balancer operates at the application layer (Layer 7) and is used for routing HTTP/HTTPS traffic to targets within a single region. It does not support cross-region failover directly.

Therefore, Amazon Route 53 and AWS Global Accelerator are the correct services that provide high availability and low latency by enabling failover across different AWS Regions.

Which of the following is a way to use Amazon EC2 Auto Scaling groups to scale capacity in the AWS Cloud?

• • A. Scale the number of EC2 instances in or out automatically, based on demand.

• • B. Use serverless EC2 instances.

• • C. Scale the size of EC2 instances up or down automatically, based on demand.

• • D. Transfer unused CPU resources between EC2 instances.

Answer explanation

A. Scale the number of EC2 instances in or out automatically, based on demand.

Explanation:

Amazon EC2 Auto Scaling is designed to automatically adjust the number of EC2 instances in your Auto Scaling group to meet demand. It ensures that you have the right number of instances available to handle the load for your application.

### Incorrect Answers:

B. Use serverless EC2 instances

- Explanation: There is no concept of "serverless EC2 instances." Serverless computing in AWS is typically associated with AWS Lambda, which automatically manages the infrastructure for you.

C. Scale the size of EC2 instances up or down automatically, based on demand

- Explanation: Auto Scaling groups in EC2 do not automatically change the size of instances (e.g., from a t2.micro to an m5.large). They scale the number of instances in or out based on demand.

D. Transfer unused CPU resources between EC2 instances

- Explanation: Transferring unused CPU resources between EC2 instances is not a feature provided by Amazon EC2 Auto Scaling. Each instance operates independently with its own allocated resources.

Therefore, the correct answer is A. Scale the number of EC2 instances in or out automatically, based on demand.

Which abilities are benefits of the AWS Cloud? (Choose two.)

• • A. Trade variable expenses for capital expenses.

• • B. Deploy globally in minutes.

• • C. Plan capacity in advance of deployments.

• • D. Take advantage of economies of scale.

• • E. Reduce dependencies on network connectivity.

Answer explanation

B. Deploy globally in minutes.

D. Take advantage of economies of scale.

### Explanation:

B. Deploy globally in minutes

- Explanation: The AWS Cloud allows businesses to deploy applications and services globally within minutes, providing access to a wide range of geographic regions. This capability helps companies reach their global customer base quickly and efficiently.

D. Take advantage of economies of scale

- Explanation: AWS aggregates the usage of hundreds of thousands of customers, allowing it to achieve significant economies of scale. These savings are passed on to customers in the form of lower prices. This means that businesses can benefit from cost efficiencies that are not achievable with on-premises infrastructure.

### Incorrect Answers:

A. Trade variable expenses for capital expenses

- Explanation: The AWS Cloud allows businesses to trade capital expenses (buying hardware and infrastructure) for variable expenses (paying only for what they use). This flexibility can help optimize costs, but it is the opposite of trading variable expenses for capital expenses.

C. Plan capacity in advance of deployments

- Explanation: One of the benefits of the AWS Cloud is that it reduces the need to plan capacity in advance. AWS resources can be provisioned on-demand, so businesses do not need to predict and purchase the exact amount of capacity they need in advance.

E. Reduce dependencies on network connectivity

- Explanation: While AWS can improve network performance and reliability, reducing dependencies on network connectivity is not a primary benefit of the cloud. Network connectivity remains essential for accessing cloud services.

Therefore, the correct answers are B. Deploy globally in minutes and D. Take advantage of economies of scale.