You have a distributed application that periodically processes large volumes of data across multiple Amazon EC2 Instances. The application is designed to recover gracefully from Amazon EC2 instance failures. You are required to accomplish this task in the most cost- effective way. Which of the following will meet your requirements?

• A.Spot Instances
• B.Reserved instances
• C.On-Demand instances
• D.Dedicated instances

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After creating a new AWS account, you use the API to request 40 on-demand EC2 instances in a single AZ. After 20 successful requests, subsequent requests failed.
What could be a reason for this issue, and how would you resolve it?

• A.You need to use Amazon Virtual Private Cloud (VPC) in order to provision more than 20 instances in a single Availability Zone. Simply terminate the resources already provisioned and re-launch them all in a VPC.
• B.AWS allows you to provision no more than 20 instances per Availability Zone. Select a different Availability Zone and retry the failed request.
• C.You encountered an API throttling situation and should try the failed requests using an exponential decay retry algorithm.
• D.You encountered a soft limit of 20 instances per region. Submit the limit increase form and retry the failed requests once approved.

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A media company must store 10 TB of audio recordings. Retrieval happens infrequently and requestors agree on an 8-hour turnaround time.
What is the MOST cost-effective solution to store the files?

• A.Amazon S3 Standard ?Infrequent Access (Standard ?IA)
• B.EBS Throughput Optimized HDD (st1)
• C.EBS Cold HDD (sc1)
• D.Amazon Glacier

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A company is hosting its website by using Amazon EC2 instances behind an Elastic Load balancer across multiple Availability Zones. The instances run in an EC2 Scaling group. The website uses Amazon Elastic Block Store (Amazon EBS) volume to store product manuals for users to download. The company updates the product content often, so new instances launched by the Auto Scaling group often have data. It can take to 30 minutes for the new instances to receive all the updates. The updates also require the EBS volumes to be resized during business hours.
The company wants to ensure that the product manuals are always up to data on all instances and that the architecture adjusts quickly to increased user demand. A solutions architect needs to meet these requirements without causing the company lo update Its application code or adjust its website What should the solutions architect do to accomplish this goal?

• A.Store the product manuals in an Amazon S3 bucket Redirect the downloads to this bucket
• B.Store the product manuals in an EBS volume Mount that volume to the EC2 instances
• C.Store the product manuals in an Amazon S3 Standard-Infrequent Access (S3 Standard-IA) bucket.Redirect the downloads to this bucket
• D.Store the product manuals in an Amazon Elastic File System (Amazon EFS) volume. Mount that volume to the EC2 instances

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How does AWS Data Pipeline execute activities on on-premise resources or AWS resources that you manage?

• A.By supplying a Task Runner package that can be installed on your on-premise hosts
• B.None of these
• C.By supplying a Task Runner file that the resources can access for execution
• D.By supplying a Task Runner json script that can be installed on your on-premise hosts

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