AWS - 4

A company has a web application that is hosted on a single EC2 instance and is approaching 100 percent CPU Utilization during peak loads. Rather than scaling the server vertically, the company has decided to deploy three Amazon EC2 instances in parallel and to distribute traffic across the three servers. What AWS Service should the company use to distribute the traffic evenly?

• Amazon CloudFront

• AWS Global Accelerator

• AWS Application Load Balancer (ALB)

• AWS Gateway Load Balancer (GWLB)

Answer explanation

To evenly distribute traffic across multiple servers, the company should use AWS Application Load Balancer (ALB). This load balancer automatically routes incoming traffic to the EC2 instances, ensuring that the load is evenly distributed. By deploying three EC2 instances in parallel and using ALB, the company can handle peak loads without overloading a single server. ALB also provides advanced features like health checks and SSL termination, making it a suitable choice for distributing traffic in a scalable and reliable manner.

A company’s AWS workflow requires that it periodically perform large-scale image and video processing jobs. The customer is seeking to minimize cost and has stated that the amount of time it takes to process these jobs is not critical, but that cost minimization is the most important factor in designing the solution. Which EC2 instance class is best suited for this processing?

• EC2 Reserved Instances - No Upfront

• EC2 On-Demand Instances

• EC2 Spot Instances

• EC2 Reserved Instances - All Upfront

Answer explanation

To minimize cost for large-scale image and video processing jobs, the best choice is EC2 Spot Instances. Although processing time is not critical, cost minimization is the priority. EC2 Spot Instances offer significant cost savings compared to other options. By bidding on unused EC2 capacity, you can access compute resources at a much lower price. This makes EC2 Spot Instances the ideal choice for cost-conscious workflows.

A company is migrating a web application to AWS. The application’s compute capacity is continually utilized throughout the year. Which of the below options offer the company the most cost-effective solution? (Choose TWO)

• On-demand Instances

• Reserved Instances

• Savings Plans

• Dedicated Hosts

• Spot Instances

Answer explanation

To find the most cost-effective solution for migrating a web application to AWS, consider using Reserved Instances and Savings Plans. Reserved Instances provide a discounted hourly rate for a fixed term, while Savings Plans offer flexibility and savings on usage. By combining these options, the company can optimize costs without compromising on compute capacity. This approach ensures long-term cost savings and efficient resource utilization, making it the best choice for the company's needs.

There is a requirement to grant a DevOps team full administrative access to all resources in an AWS account. Who can grant them these permissions?

• AWS cloud support engineers

• AWS security team

• AWS account owner

• AWS technical account manager

Answer explanation

To grant a DevOps team full administrative access to all resources in an AWS account, the permissions can be granted by the AWS account owner. The account owner has the authority to provide the necessary access and manage the team's privileges. This ensures that the DevOps team has the required permissions to perform their tasks effectively and efficiently. It is important to have a designated account owner who can oversee and control access to the AWS resources.

Which of the following are examples of AWS-managed databases? (Choose TWO)

• Amazon CloudSearch

• Microsoft SQL Server on Amazon EC2

• Amazon Neptune

• MySQL on Amazon EC2

• Amazon RDS for MySQL

Answer explanation

The question asks for examples of AWS-managed databases. Amazon CloudSearch, Amazon Neptune, and Amazon RDS for MySQL are all examples of AWS-managed databases. Microsoft SQL Server on Amazon EC2 and MySQL on Amazon EC2 are not AWS-managed databases. Therefore, the correct choices are Amazon CloudSearch and Amazon RDS for MySQL.

A customer is planning to migrate their Microsoft SQL Server databases to AWS. Which AWS Services can the customer use to run their Microsoft SQL Server database on AWS? (Choose TWO)

• Amazon Elastic Compute Cloud

• AWS Lambda

• AWS Database Migration service (DMS)

• AWS Fargate

• Amazon RDS

Answer explanation

To run their Microsoft SQL Server database on AWS, the customer can use two AWS services. First, they can utilize Amazon RDS, which provides a managed database service for SQL Server. Second, they can leverage the AWS Database Migration Service (DMS) to migrate their databases to AWS. These services offer reliable and scalable solutions for running SQL Server on the AWS platform, ensuring efficient database management and migration without the need for manual setup or configuration.

Which AWS Service offers an NFS file system that can be mounted concurrently from multiple EC2 instances?

• Amazon SageMaker

• Amazon Elastic File System

• Amazon Simple Storage Service

• Amazon Elastic Block Store

Answer explanation

Amazon Elastic File System is the correct choice for this question. It offers an NFS file system that can be mounted concurrently from multiple EC2 instances. This service provides scalable storage capacity and performance, making it suitable for a wide range of use cases. With Amazon Elastic File System, you can easily share files across multiple instances, making it a convenient option for applications that require shared access to data.

A company wants to grant a new employee long-term access to manage Amazon DynamoDB databases. Which of the following is a recommended best-practice when granting these permissions?

• Create an IAM user and attach a policy with Amazon DynamoDB access permissions

• Create an IAM role and attach a policy with Administrator access permissions

• Create an IAM role and attach a policy with Amazon DynamoDB access permissions

• Create an IAM user and attach a policy with Administrator access permissions

Answer explanation

To grant a new employee long-term access to manage Amazon DynamoDB databases, it is recommended to create an IAM user and attach a policy with Amazon DynamoDB access permissions. This ensures that the employee has the necessary privileges without granting them full administrative access. By following this best practice, the employee can effectively manage the databases while maintaining security and minimizing potential risks.

A key practice when designing solutions on AWS is to minimize dependencies between components so that the failure of a single component does not impact other components. What is this practice called?

• Elastic coupling

• Loosely coupling

• Tightly coupling

• Scalable coupling

Answer explanation

The key practice when designing solutions on AWS to minimize dependencies between components is called loosely coupling. Loosely coupling ensures that the failure of a single component does not impact other components. It allows for flexibility and scalability in the system architecture. By decoupling components, changes or failures in one component do not affect the functionality of other components. This practice promotes fault tolerance and resilience in AWS solutions.

You decide to buy a reserved instance for a term of one year. Which option provides the largest total discount?

• All up-front reservation

• Partial up-front reservation

• No up-front reservation

• All reserved instance payment options provide the same discount level

Answer explanation

To maximize your total discount, choose the All up-front reservation option. This option requires paying the entire reservation cost upfront, but it provides the largest discount. Choosing this option ensures you receive the maximum savings over the one-year term. Other payment options may offer lower discounts or require partial upfront payments. By selecting the All up-front reservation, you can optimize your savings without compromising on the discount level.