Extinction Agenda Book 4 Chapter 1

50問 • 1年前

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A leading social media analytics company is contemplating moving its dockerized application stack into AWS Cloud. The company is not sure about the pricing for using Amazon Elastic Container Service (Amazon ECS) with the EC2 launch type compared to the Amazon Elastic Container Service (Amazon ECS) with the Fargate launch type. Which of the following is correct regarding the pricing for these two services?

Amazon ECS with EC2 launch type is charged based on EC2 instances and EBS volumes used. Amazon ECS with Fargate launch type is charged based on vCPU and memory resources that the containerized application requests

A video analytics organization has been acquired by a leading media company. The analytics organization has 10 independent applications with an on-premises data footprint of about 70 Terabytes for each application. The CTO of the media company has set a timeline of two weeks to carry out the data migration from on-premises data center to AWS Cloud and establish connectivity. Which of the following are the MOST cost-effective options for completing the data transfer and establishing connectivity? (Select two)

Order 10 AWS Snowball Edge Storage Optimized devices to complete the one-time data transfer, Setup AWS Site-to-Site VPN to establish on-going connectivity between the on-premises data center and AWS Cloud

As part of a pilot program, a biotechnology company wants to integrate data files from its on-premises analytical application with AWS Cloud via an NFS interface. Which of the following AWS service is the MOST efficient solution for the given use-case?

AWS Storage Gateway - File Gateway

An audit department generates and accesses the audit reports only twice in a financial year. The department uses AWS Step Functions to orchestrate the report creating process that has failover and retry scenarios built into the solution. The underlying data to create these audit reports is stored on Amazon S3, runs into hundreds of Terabytes and should be available with millisecond latency. As an AWS Certified Solutions Architect – Associate, which is the MOST cost-effective storage class that you would recommend to be used for this use-case?

Amazon S3 Standard-Infrequent Access (S3 Standard-IA)

A leading video streaming service delivers billions of hours of content from Amazon Simple Storage Service (Amazon S3) to customers around the world. Amazon S3 also serves as the data lake for its big data analytics solution. The data lake has a staging zone where intermediary query results are kept only for 24 hours. These results are also heavily referenced by other parts of the analytics pipeline. Which of the following is the MOST cost-effective strategy for storing this intermediary query data?

Store the intermediary query results in Amazon S3 Standard storage class

The IT department at a consulting firm is conducting a training workshop for new developers. As part of an evaluation exercise on Amazon S3, the new developers were asked to identify the invalid storage class lifecycle transitions for objects stored on Amazon S3. Can you spot the INVALID lifecycle transitions from the options below? (Select two) ?

Amazon S3 Intelligent-Tiering => Amazon S3 Standard, Amazon S3 One Zone-IA => Amazon S3 Standard-IA

A financial services company recently launched an initiative to improve the security of its AWS resources and it had enabled AWS Shield Advanced across multiple AWS accounts owned by the company. Upon analysis, the company has found that the costs incurred are much higher than expected. Which of the following would you attribute as the underlying reason for the unexpectedly high costs for AWS Shield Advanced service?

Consolidated billing has not been enabled. All the AWS accounts should fall under a single consolidated billing for the monthly fee to be charged only once

A media agency stores its re-creatable assets on Amazon Simple Storage Service (Amazon S3) buckets. The assets are accessed by a large number of users for the first few days and the frequency of access falls down drastically after a week. Although the assets would be accessed occasionally after the first week, but they must continue to be immediately accessible when required. The cost of maintaining all the assets on Amazon S3 storage is turning out to be very expensive and the agency is looking at reducing costs as much as possible. As an AWS Certified Solutions Architect – Associate, can you suggest a way to lower the storage costs while fulfilling the business requirements?

Configure a lifecycle policy to transition the objects to Amazon S3 One Zone-Infrequent Access (S3 One Zone-IA) after 30 days

A company runs a data processing workflow that takes about 60 minutes to complete. The workflow can withstand disruptions and it can be started and stopped multiple times. Which is the most cost-effective solution to build a solution for the workflow?

Use Amazon EC2 spot instances to run the workflow processes

A geological research agency maintains the seismological data for the last 100 years. The data has a velocity of 1GB per minute. You would like to store the data with only the most relevant attributes to build a predictive model for earthquakes. What AWS services would you use to build the most cost-effective solution with the LEAST amount of infrastructure maintenance?

Ingest the data in Amazon Kinesis Data Firehose and use an intermediary AWS Lambda function to filter and transform the incoming stream before the output is dumped on Amazon S3

A retail company has developed a REST API which is deployed in an Auto Scaling group behind an Application Load Balancer. The REST API stores the user data in Amazon DynamoDB and any static content, such as images, are served via Amazon Simple Storage Service (Amazon S3). On analyzing the usage trends, it is found that 90% of the read requests are for commonly accessed data across all users. As a Solutions Architect, which of the following would you suggest as the MOST efficient solution to improve the application performance?

Enable Amazon DynamoDB Accelerator (DAX) for Amazon DynamoDB and Amazon CloudFront for Amazon S3

A news network uses Amazon Simple Storage Service (Amazon S3) to aggregate the raw video footage from its reporting teams across the US. The news network has recently expanded into new geographies in Europe and Asia. The technical teams at the overseas branch offices have reported huge delays in uploading large video files to the destination Amazon S3 bucket. Which of the following are the MOST cost-effective options to improve the file upload speed into Amazon S3 (Select two)

Use multipart uploads for faster file uploads into the destination Amazon S3 bucket, Use Amazon S3 Transfer Acceleration (Amazon S3TA) to enable faster file uploads into the destination S3 bucket

A technology blogger wants to write a review on the comparative pricing for various storage types available on AWS Cloud. The blogger has created a test file of size 1 gigabytes with some random data. Next he copies this test file into AWS S3 Standard storage class, provisions an Amazon EBS volume (General Purpose SSD (gp2)) with 100 gigabytes of provisioned storage and copies the test file into the Amazon EBS volume, and lastly copies the test file into an Amazon EFS Standard Storage filesystem. At the end of the month, he analyses the bill for costs incurred on the respective storage types for the test file. What is the correct order of the storage charges incurred for the test file on these three storage types?

Cost of test file storage on Amazon S3 Standard < Cost of test file storage on Amazon EFS < Cost of test file storage on Amazon EBS

A company has a web application that runs 24*7 in the production environment. The development team at the company runs a clone of the same application in the dev environment for up to 8 hours every day. The company wants to build the MOST cost-optimal solution by deploying these applications using the best-fit pricing options for Amazon Elastic Compute Cloud (Amazon EC2) instances. What would you recommend?

Use Amazon EC2 reserved instance (RI) for the production application and on-demand instances for the dev application

A company is looking at storing their less frequently accessed files on AWS that can be concurrently accessed by hundreds of Amazon EC2 instances. The company needs the most cost-effective file storage service that provides immediate access to data whenever needed. Which of the following options represents the best solution for the given requirements?

Amazon Elastic File System (EFS) Standard–IA storage class

Amazon EC2 Auto Scaling needs to terminate an instance from Availability Zone (AZ) us-east-1a as it has the most number of instances amongst the Availability Zone (AZs) being used currently. There are 4 instances in the Availability Zone (AZ) us-east-1a like so: Instance A has the oldest launch template, Instance B has the oldest launch configuration, Instance C has the newest launch configuration and Instance D is closest to the next billing hour. Which of the following instances would be terminated per the default termination policy?

Instance B

You would like to use AWS Snowball to move on-premises backups into a long term archival tier on AWS. Which solution provides the MOST cost savings?

Create an AWS Snowball job and target an Amazon S3 bucket. Create a lifecycle policy to transition this data to Amazon S3 Glacier Deep Archive on the same day

The engineering manager for a content management application wants to set up Amazon RDS read replicas to provide enhanced performance and read scalability. The manager wants to understand the data transfer charges while setting up Amazon RDS read replicas. Which of the following would you identify as correct regarding the data transfer charges for Amazon RDS read replicas?

There are data transfer charges for replicating data across AWS Regions

An IT company wants to optimize the costs incurred on its fleet of 100 Amazon EC2 instances for the next year. Based on historical analyses, the engineering team observed that 70 of these instances handle the compute services of its flagship application and need to be always available. The other 30 instances are used to handle batch jobs that can afford a delay in processing. As a solutions architect, which of the following would you recommend as the MOST cost-optimal solution?

Purchase 70 reserved instances (RIs) and 30 spot instances

You would like to mount a network file system on Linux instances, where files will be stored and accessed frequently at first, and then infrequently. What solution is the MOST cost-effective?

Amazon EFS Infrequent Access

Your company has a monthly big data workload, running for about 2 hours, which can be efficiently distributed across multiple servers of various sizes, with a variable number of CPUs. The solution for the workload should be able to withstand server failures. Which is the MOST cost-optimal solution for this workload?

Run the workload on a Spot Fleet

The engineering team at an e-commerce company is working on cost optimizations for Amazon Elastic Compute Cloud (Amazon EC2) instances. The team wants to manage the workload using a mix of on-demand and spot instances across multiple instance types. They would like to create an Auto Scaling group with a mix of these instances. Which of the following options would allow the engineering team to provision the instances for this use-case?

You can only use a launch template to provision capacity across multiple instance types using both On-Demand Instances and Spot Instances to achieve the desired scale, performance, and cost

You have multiple AWS accounts within a single AWS Region managed by AWS Organizations and you would like to ensure all Amazon EC2 instances in all these accounts can communicate privately. Which of the following solutions provides the capability at the CHEAPEST cost?

Create a virtual private cloud (VPC) in an account and share one or more of its subnets with the other accounts using Resource Access Manager

An application is currently hosted on four Amazon EC2 instances (behind Application Load Balancer) deployed in a single Availability Zone (AZ). To maintain an acceptable level of end-user experience, the application needs at least 4 instances to be always available. As a solutions architect, which of the following would you recommend so that the application achieves high availability with MINIMUM cost?

Deploy the instances in three Availability Zones (AZs). Launch two instances in each Availability Zone (AZ)

An application runs big data workloads on Amazon Elastic Compute Cloud (Amazon EC2) instances. The application runs 24x7 all round the year and needs at least 20 instances to maintain a minimum acceptable performance threshold and the application needs 300 instances to handle spikes in the workload. Based on historical workloads processed by the application, it needs 80 instances 80% of the time. As a solutions architect, which of the following would you recommend as the MOST cost-optimal solution so that it can meet the workload demand in a steady state?

Purchase 80 reserved instances (RIs). Provision additional on-demand and spot instances per the workload demand (Use Auto Scaling Group with launch template to provision the mix of on-demand and spot instances)

A financial services company is migrating their messaging queues from self-managed message-oriented middleware systems to Amazon Simple Queue Service (Amazon SQS). The development team at the company wants to minimize the costs of using Amazon SQS. As a solutions architect, which of the following options would you recommend for the given use-case?

Use SQS long polling to retrieve messages from your Amazon SQS queues

A financial services company is looking to move its on-premises IT infrastructure to AWS Cloud. The company has multiple long-term server bound licenses across the application stack and the CTO wants to continue to utilize those licenses while moving to AWS. As a solutions architect, which of the following would you recommend as the MOST cost-effective solution?

Use Amazon EC2 dedicated hosts

An e-commerce company has deployed its application on several Amazon EC2 instances that are configured in a private subnet using IPv4. These Amazon EC2 instances read and write a huge volume of data to and from Amazon S3 in the same AWS region. The company has set up subnet routing to direct all the internet-bound traffic through a Network Address Translation gateway (NAT gateway). The company wants to build the most cost-optimal solution without impacting the application's ability to communicate with Amazon S3 or the internet. As an AWS Certified Solutions Architect Associate, which of the following would you recommend?

Set up a VPC gateway endpoint for Amazon S3. Attach an endpoint policy to the endpoint. Update the route table to direct the S3-bound traffic to the VPC endpoint

An IT company is looking to move its on-premises infrastructure to AWS Cloud. The company has a portfolio of applications with a few of them using server bound licenses that are valid for the next year. To utilize the licenses, the CTO wants to use dedicated hosts for a one year term and then migrate the given instances to default tenancy thereafter. As a solutions architect, which of the following options would you identify as CORRECT for changing the tenancy of an instance after you have launched it? (Select two)

You can change the tenancy of an instance from dedicated to host, You can change the tenancy of an instance from host to dedicated

An IT training company hosted its website on Amazon S3 a couple of years ago. Due to COVID-19 related travel restrictions, the training website has suddenly gained traction. With an almost 300% increase in the requests served per day, the company's AWS costs have sky-rocketed for just the Amazon S3 outbound data costs. As a Solutions Architect, can you suggest an alternate method to reduce costs while keeping the latency low?

Configure Amazon CloudFront to distribute the data hosted on Amazon S3 cost-effectively

A social media startup uses AWS Cloud to manage its IT infrastructure. The engineering team at the startup wants to perform weekly database rollovers for a MySQL database server using a serverless cron job that typically takes about 5 minutes to execute the database rollover script written in Python. The database rollover will archive the past week’s data from the production database to keep the database small while still keeping its data accessible. As a solutions architect, which of the following would you recommend as the MOST cost-efficient and reliable solution?

Schedule a weekly Amazon EventBridge event cron expression to invoke an AWS Lambda function that runs the database rollover job

A company has a license-based, expensive, legacy commercial database solution deployed at its on-premises data center. The company wants to migrate this database to a more efficient, open-source, and cost-effective option on AWS Cloud. The CTO at the company wants a solution that can handle complex database configurations such as secondary indexes, foreign keys, and stored procedures. As a solutions architect, which of the following AWS services should be combined to handle this use-case? (Select two)

AWS Database Migration Service (AWS DMS), AWS Schema Conversion Tool (AWS SCT)

A startup has created a new web application for users to complete a risk assessment survey for COVID-19 symptoms via a self-administered questionnaire. The startup has purchased the domain covid19survey.com using Amazon Route 53. The web development team would like to create Amazon Route 53 record so that all traffic for covid19survey.com is routed to www.covid19survey.com. As a solutions architect, which of the following is the MOST cost-effective solution that you would recommend to the web development team?

Create an alias record for covid19survey.com that routes traffic to www.covid19survey.com

The development team at a retail company wants to optimize the cost of Amazon EC2 instances. The team wants to move certain nightly batch jobs to spot instances. The team has hired you as a solutions architect to provide the initial guidance. Which of the following would you identify as CORRECT regarding the capabilities of spot instances? (Select three)

When you cancel an active spot request, it does not terminate the associated instance, If a spot request is persistent, then it is opened again after your Spot Instance is interrupted, Spot Fleets can maintain target capacity by launching replacement instances after Spot Instances in the fleet are terminated

Your application is hosted by a provider on yourapp.provider.com. You would like to have your users access your application using www.your-domain.com, which you own and manage under Amazon Route 53. Which Amazon Route 53 record should you create?

Create a CNAME record

A startup's cloud infrastructure consists of a few Amazon EC2 instances, Amazon RDS instances and Amazon S3 storage. A year into their business operations, the startup is incurring costs that seem too high for their business requirements. Which of the following options represents a valid cost-optimization solution?

Use AWS Cost Explorer Resource Optimization to get a report of Amazon EC2 instances that are either idle or have low utilization and use AWS Compute Optimizer to look at instance type recommendations

A company has noticed that its Amazon EBS Elastic Volume (io1) accounts for 90% of the cost and the remaining 10% cost can be attributed to the Amazon EC2 instance. The Amazon CloudWatch metrics report that both the Amazon EC2 instance and the Amazon EBS volume are under-utilized. The Amazon CloudWatch metrics also show that the Amazon EBS volume has occasional I/O bursts. The entire infrastructure is managed by AWS CloudFormation. As a Solutions Architect, what do you propose to reduce the costs?

Convert the Amazon EC2 instance EBS volume to gp2

A mobile gaming company is experiencing heavy read traffic to its Amazon Relational Database Service (Amazon RDS) database that retrieves player’s scores and stats. The company is using an Amazon RDS database instance type that is not cost-effective for their budget. The company would like to implement a strategy to deal with the high volume of read traffic, reduce latency, and also downsize the instance size to cut costs. Which of the following solutions do you recommend?

Setup Amazon ElastiCache in front of Amazon RDS

As an e-sport tournament hosting company, you have servers that need to scale and be highly available. Therefore you have deployed an Elastic Load Balancing (ELB) with an Auto Scaling group (ASG) across 3 Availability Zones (AZs). When e-sport tournaments are running, the servers need to scale quickly. And when tournaments are done, the servers can be idle. As a general rule, you would like to be highly available, have the capacity to scale and optimize your costs. What do you recommend? (Select two)

Use Reserved Instances (RIs) for the minimum capacity, Set the minimum capacity to 2

You have an Amazon S3 bucket that contains files in two different folders - s3://my-bucket/images and s3://my-bucket/thumbnails. When an image is first uploaded and new, it is viewed several times. But after 45 days, analytics prove that image files are on average rarely requested, but the thumbnails still are. After 180 days, you would like to archive the image files and the thumbnails. Overall you would like the solution to remain highly available to prevent disasters happening against a whole Availability Zone (AZ). How can you implement an efficient cost strategy for your Amazon S3 bucket? (Select two)

Create a Lifecycle Policy to transition objects to Amazon S3 Standard IA using a prefix after 45 days, Create a Lifecycle Policy to transition all objects to Amazon S3 Glacier after 180 days

A photo hosting service publishes a collection of beautiful mountain images, every month, that aggregate over 50 gigabytes in size and downloaded all around the world. The content is currently hosted on Amazon EFS and distributed by Elastic Load Balancing (ELB) and Amazon EC2 instances. The website is experiencing high load each month and very high network costs. As a Solutions Architect, what can you recommend that won't force an application refactor and reduce network costs and Amazon EC2 load drastically?

Create an Amazon CloudFront distribution

You have developed a new REST API leveraging the Amazon API Gateway, AWS Lambda and Amazon Aurora database services. Most of the workload on the website is read-heavy. The data rarely changes and it is acceptable to serve users outdated data for about 24 hours. Recently, the website has been experiencing high load and the costs incurred on the Aurora database have been very high. How can you easily reduce the costs while improving performance, with minimal changes?

Enable Amazon API Gateway Caching

You are working as a Solutions Architect for a photo processing company that has a proprietary algorithm to compress an image without any loss in quality. Because of the efficiency of the algorithm, your clients are willing to wait for a response that carries their compressed images back. You also want to process these jobs asynchronously and scale quickly, to cater to the high demand. Additionally, you also want the job to be retried in case of failures. Which combination of choices do you recommend to minimize cost and comply with the requirements? (Select two)

Amazon Simple Queue Service (Amazon SQS), Amazon EC2 Spot Instances

The data engineering team at an e-commerce company has set up a workflow to ingest the clickstream data into the raw zone of the Amazon S3 data lake. The team wants to run some SQL based data sanity checks on the raw zone of the data lake. What AWS services would you recommend for this use-case such that the solution is cost-effective and easy to maintain?

Use Amazon Athena to run SQL based analytics against Amazon S3 data

Computer vision researchers at a university are trying to optimize the I/O bound processes for a proprietary algorithm running on Amazon EC2 instances. The ideal storage would facilitate high-performance IOPS when doing file processing in a temporary storage space before uploading the results back into Amazon S3. As a solutions architect, which of the following AWS storage options would you recommend as the MOST performant as well as cost-optimal?

Use Amazon EC2 instances with Instance Store as the storage option

A medical devices company uses Amazon S3 buckets to store critical data. Hundreds of buckets are used to keep the data segregated and well organized. Recently, the development team noticed that the lifecycle policies on the Amazon S3 buckets have not been applied optimally, resulting in higher costs. As a Solutions Architect, can you recommend a solution to reduce storage costs on Amazon S3 while keeping the IT team's involvement to a minimum?

Use Amazon S3 Intelligent-Tiering storage class to optimize the Amazon S3 storage costs

A multi-national company is looking at optimizing their AWS resources across various countries and regions. They want to understand the best practices on cost optimization, performance, and security for their system architecture spanning across multiple business units. Which AWS service is the best fit for their requirements?

AWS Trusted Advisor

A development team has deployed a microservice to the Amazon Elastic Container Service (Amazon ECS). The application layer is in a Docker container that provides both static and dynamic content through an Application Load Balancer. With increasing load, the Amazon ECS cluster is experiencing higher network usage. The development team has looked into the network usage and found that 90% of it is due to distributing static content of the application. As a Solutions Architect, what do you recommend to improve the application's network usage and decrease costs?

Distribute the static content through Amazon S3

A retail company maintains an AWS Direct Connect connection to AWS and has recently migrated its data warehouse to AWS. The data analysts at the company query the data warehouse using a visualization tool. The average size of a query returned by the data warehouse is 60 megabytes and the query responses returned by the data warehouse are not cached in the visualization tool. Each webpage returned by the visualization tool is approximately 600 kilobytes. Which of the following options offers the LOWEST data transfer egress cost for the company?

Deploy the visualization tool in the same AWS region as the data warehouse. Access the visualization tool over a Direct Connect connection at a location in the same region

The content division at a digital media agency has an application that generates a large number of files on Amazon S3, each approximately 10 megabytes in size. The agency mandates that the files be stored for 5 years before they can be deleted. The files are frequently accessed in the first 30 days of the object creation but are rarely accessed after the first 30 days. The files contain critical business data that is not easy to reproduce, therefore, immediate accessibility is always required. Which solution is the MOST cost-effective for the given use case?

Set up an Amazon S3 bucket lifecycle policy to move files from Amazon S3 Standard to Amazon S3 Standard-IA 30 days after object creation. Delete the files 5 years after object creation

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critical flaw · 98問 · 2年前

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