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AWS Certified Solutions Architect - Professional Questions and Answers (Dumps and Practice Questions)



Question : You deployed your company website using Elastic Beanstalk and you enabled log file
rotation to S3. An Elastic Map Reduce job is periodically analyzing the logs on S3 to build a
usage dashboard that you share with your CIO. You recently improved overall performance
of the website using Cloud Front for dynamic content delivery and your website as the
origin
After this architectural change, the usage dashboard shows that the traffic on your website
dropped by an order of magnitude. How do you fix your usage dashboard'?

: You deployed your company website using Elastic Beanstalk and you enabled log file
1. Enable Cloud Front to deliver access logs to S3 and use them as input of the Elastic Map Reduce job.
2. Turn on Cloud Trail and use trail log tiles on S3 as input of the Elastic Map Reduce job
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4. Use Elastic Beanstalk "Rebuild Environment" option to update log delivery to the Elastic Map Reduce job.
5. Use Elastic Beanstalk 'Restart App server(s)" option to update log delivery to the Elastic Map Reduce job.



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Restart the app server - which restart the built in application server i.e., Tomcat server (correct me if am wrong)

Rebuilding the Environment - what it does exactly, does it deploys the .war file again and starts building the environement from scratch .

Rebuilding DELETES the associated RDS (and all its automatic backups).

CREATE A SNAPSHOT BEFORE REBUILDING

I was not warned that this would be the case and consequently lost data.








Question : A large real-estate brokerage is exploring the option of adding a cost-effective location based alert to their existing mobile application. The application backend
infrastructure currently runs on AWS. Users who opt in to this service will receive alerts on their mobile device regarding real-estate offers in proximity to their location.
For the alerts to be relevant, delivery time needs to be in the few minute count. And an existing mobile app has 5 million users across the USA. Which one of the following
architectural suggestions would you make to the customer?
: A large real-estate brokerage is exploring the option of adding a cost-effective location based alert to their existing mobile application. The application backend
1. The mobile application will submit its location to a web service endpoint utilizing Elastic Load Balancing and EC2 instances. DynamoDB will be used to store and
retrieve relevant offers. EC2 instances will communicate with mobile carriers/device providers to push alerts back to mobile application.
2. Use AWS DirectConnect or VPN to establish connectivity with mobile carriers. EC2 instances will receive the mobile applications's location through carrier connection.
RDS will be used to store and relevant offers. EC2 instances will communicate with mobile carriers to push alerts back to the mobile application.
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AWS Mobile Push will be used to send offers to the mobile application
4. The mobile application will send device location using AWS Mobile Push. EC2 instances will retrieve the relevant offers from DynamoDB.
EC2 instances will communicate with mobile carriers/device providers to push alerts back to the mobile application.



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SNS : Send push messages
Deliver messages instantly to applications or users and eliminate polling in your apps.
Use your choice of platforms : Directly access SNS using iOS, Android, Java, Python, PHP, Node.js, or .NET SDKs from AWS.

Amazon Simple Queue Service (SQS) is a fast, reliable, scalable, fully managed message queuing service. SQS makes it simple and cost-effective to decouple the components of a cloud
application. You can use SQS to transmit any volume of data, at any level of throughput, without losing messages or requiring other services to be always available.

With SQS, you can offload the administrative burden of operating and scaling a highly available messaging cluster, while paying a low price for only what you use.







Question : Your company is in the process of developing a next generation pet collar that collects biometric information to assist families with promoting healthy lifestyles for
their pets. Each collar will push 30kb of biometric data In JSON format in every 2 seconds to a collection platform that will process and analyze the data providing health trending
information back to the pet owners and veterinarians via a web portal. Management has tasked you to architect the collection platform ensuring the following requirements are met.
Provide the ability for real-time analytics of the inbound biometric data. Ensure processing of the biometric data is highly durable. Elastic and parallel. The results of the
analytic processing should be persisted for data mining. Which architecture outlined below wil meet the initial requirements for the collection platform?
: Your company is in the process of developing a next generation pet collar that collects biometric information to assist families with promoting healthy lifestyles for
1. Utilize S3 to collect the inbound sensor data, analyze the data from S3 with a daily scheduled Data Pipeline and save the results to a Redshift Cluster.
2. Utilize Amazon Kinesis to collect the inbound sensor data, analyze the data with Kinesis clients and save the results to a Redshift cluster using EMR.
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4. Utilize EMR to collect the inbound sensor data, analyze the data from EMR with Amazon Kinesis and save the results to DynamoDB.

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Explanation: Amazon Kinesis is a platform for streaming data on AWS, offering powerful services to make it easy to load and analyze streaming data, and also providing the ability for you to
build custom streaming data applications for specialized needs. Web applications, mobile devices, wearables, industrial sensors, and many software applications and services can
generate staggering amounts of streaming data - sometimes TBs per hour - that need to be collected, stored, and processed continuously. Amazon Kinesis services enable you to do that
simply and at a low cost.




Related Questions

Question : A user has created an S bucket which is not publicly accessible. The bucket is having thirty objects which are also private. If the user wants to
make the objects public, how can he configure this with minimal efforts?
 : A user has created an S bucket which is not publicly accessible. The bucket is having thirty objects which are also private. If the user wants to
1. The user should select all objects from the console and apply a single policy to mark them public
2. The user can write a program which programmatically makes all objects public using S3 SDK
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4. Make the bucket ACL as public so it will also mark all objects as public




Question : A sys admin is maintaining an application on AWS. The application is installed on EC and user has configured ELB and Auto Scaling.
Considering future load increase, the user is planning to launch new servers proactively so that they get registered with ELB. How can the user
add these instances with Auto Scaling?

 : A sys admin is maintaining an application on AWS. The application is installed on EC and user has configured ELB and Auto Scaling.
1. Increase the desired capacity of the Auto Scaling group
2. Increase the maximum limit of the Auto Scaling group
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4. Decrease the minimum limit of the Auto Scaling grou


Question : Your company plans to host a large donation website on Amazon Web Services (AWS). You anticipate a large and undetermined amount of traffic that will create many
database writes. To be certain that you do not drop any writes to a database hosted on AWS. Which service should you use?

 : Your company plans to host a large donation website on Amazon Web Services (AWS). You anticipate a large and undetermined amount of traffic that will create many
1. Amazon RDS with provisioned IOPS up to the anticipated peak write throughput.
2. Amazon Simple Queue Service (SQS) for capturing the writes and draining the queue to write to the database.
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4. Amazon DynamoDB with provisioned write throughput up to the anticipated peak write throughput.


Question : A user has setup connection draining with ELB to allow in-flight requests to continue while the instance is being deregistered through Auto Scaling.
If the user has not specified the draining time, how long will ELB allow inflight requests traffic to continue?
 : A user has setup connection draining with ELB to allow in-flight requests to continue while the instance is being deregistered through Auto Scaling.
1. 600 seconds
2. 3600 seconds
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4. 0 seconds


Question : Company B is launching a new game app for mobile devices. Users will log into the game using their existing social media account to streamline data capture. Company B
would like to directly save player data and scoring information from the mobile app to a DynamoDB table named Score Data. When a user saves their game the progress data will be
stored to the Game state S3 bucket. what is the best approach for storing data to DynamoDB and S3?


 : Company B is launching a new game app for mobile devices. Users will log into the game using their existing social media account to streamline data capture. Company B
1. Use an EC2 Instance that is launched with an EC2 role providing access to the Score Data DynamoDB table and the GameState S3 bucket that communicates with the
mobile app via web services.
2. Use temporary security credentials that assume a role providing access to the Score Data DynamoDB table and the Game State S3 bucket using web identity federation.
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bucket.
4. Use an IAM user with access credentials assigned a role providing access to the Score Data DynamoDB table and the Game State S3 bucket for distribution with the
mobile app.



Question : A newspaper organization has a on-premises application which allows the public to search its back catalogue and retrieve individual newspaper pages via a website
written in Java . They have scanned the old newspapers into JPEGs (approx 17TB) and used Optical Character Recognition (OCR) to populate a commercial search product. The hosting
platform and software are now end of life and the organization wants to migrate Its archive to AWS and produce a cost efficient architecture and still be designed for availability
and durability Which is the most appropriate?

 : A newspaper organization has a on-premises application which allows the public to search its back catalogue and retrieve individual newspaper pages via a website
1. Use S3 with reduced redundancy to store and serve the scanned files, install the commercial search application on EC2 Instances and configure with auto-scaling and
an Elastic Load Balancer.
2. Model the environment using CloudFormation use an EC2 instance running Apache webserver and an open source search application, stripe multiple standard EBS volumes
together to store the JPEGs and search index.
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multiple availability zones.
4. Use a single-AZ RDS MySQL instance lo store the search index 33d the JPEG images use an EC2 instance to serve the website and translate user queries into SQL.

5. Use a CloudFront download distribution to serve the JPEGs to the end users and Install the current commercial search product, along with a Java Container Tor the
website on EC2 instances and use Route53 with DNS round-robin.