AWS Weird Ones

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  • 1/114 Questions

    A Solutions Architect needs to design an architecture for a new, mission-critical batch processing billing application. The application is required to run Monday, Wednesday, and Friday from 5 AM to 11 AM. Which is the MOST cost-effective Amazon EC2 pricing model?

    • Amazon EC2 Spot Instances
    • On-Demand Amazon EC2 Instances
    • Scheduled Reserved Instances
    • Dedicated Amazon EC2 Instances
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AWS Weird Ones - Quiz

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  • 2. 

    An application stack includes an Elastic Load Balancer in a public subnet, a fleet of Amazon EC2 instances in an Auto Scaling group, and an Amazon RDS MySQL cluster. Users connect to the application from the Internet. The application servers and database must be secure. How should a Solutions Architect perform this task?

    • Create a private subnet for the Amazon EC2 instances and a public subnet for the Amazon RDS cluster.

    • Create a private subnet for the Amazon EC2 instances and a private subnet for the Amazon RDS cluster.

    • Create a public subnet for the Amazon EC2 instances and a private subnet for the Amazon RDS cluster.

    • Create a public subnet for the Amazon EC2 instances and a public subnet for the Amazon RDS cluster.

    Correct Answer
    A. Create a private subnet for the Amazon EC2 instances and a private subnet for the Amazon RDS cluster.
  • 3. 

    An AWS workload in a VPC is running a legacy database on an Amazon EC2 instance. Data is stored on a 200GB Amazon EBS (gp2) volume. At peak load times, logs show excessive wait time. What solution should be implemented to improve database performance using persistent storage?

    • Migrate the data on the Amazon EBS volume to an SSD-backed volume.

    • Change the EC2 instance type to one with EC2 instance store volumes.

    • Migrate the data on the EBS volume to provisioned IOPS SSD (io1).

    • Change the EC2 instance type to one with burstable performance.

    Correct Answer
    A. Migrate the data on the EBS volume to provisioned IOPS SSD (io1).
  • 4. 

    A Solutions Architect needs to build a resilient data warehouse using Amazon Redshift. The Architect needs to rebuild the Redshift cluster in another region. Which approach can the Architect take to address this requirement?

    • Modify the Redshift cluster and configure cross-region snapshots to the other region.

    • Modify the Redshift cluster to take snapshots of the Amazon EBS volumes each day, sharing those snapshots with the other region.

    • Modify the Redshift cluster and configure the backup and specify the Amazon S3 bucket in the other region.

    • Modify the Redshift cluster to use AWS Snowball in export mode with data delivered to the other region.

    Correct Answer
    A. Modify the Redshift cluster and configure cross-region snapshots to the other region.
  • 5. 

    A company plans to use AWS for all new batch processing workloads. The company's developers use Docker containers for the new batch processing. The system design must accommodate critical and non-critical batch processing workloads 24/7. How should a Solutions Architect design this architecture in a cost-efficient manner?

    • Purchase Reserved Instances to run all containers. Use Auto Scaling groups to schedule jobs.

    • Host a container management service on Spot Instances. Use Reserved Instances to run Docker containers.

    • Use Amazon ECS orchestration and Auto Scaling groups: one with Reserve Instances, one with Spot Instances.

    • Use Amazon ECS to manage container orchestration. Purchase Reserved Instances to run all batch workloads at the same time.

    Correct Answer
    A. Use Amazon ECS orchestration and Auto Scaling groups: one with Reserve Instances, one with Spot Instances.
  • 6. 

    A Solutions Architect is developing software on AWS that requires access to multiple AWS services, including an Amazon EC2 instance. This is a security sensitive application, and AWS credentials such as Access Key ID and Secret Access Key need to be protected and cannot be exposed anywhere in the system. What security measure would satisfy these requirements?

    • Store the AWS Access Key ID/Secret Access Key combination in software comments

    • Assign an IAM user to the Amazon EC2 instance.

    • Assign an IAM role to the Amazon EC2 instance.

    • Enable multi-factor authentication for the AWS root account.

    Correct Answer
    A. Assign an IAM role to the Amazon EC2 instance.
  • 7. 

    A company wants to migrate a highly transactional database to AWS. Requirements state that the database has more than 6 TB of data and will grow exponentially. Which solution should a Solutions Architect recommend?

    • Amazon Aurora

    • Amazon Redshift

    • Amazon DynamoDB

    • Amazon RDS MySQL

    Correct Answer
    A. Amazon Aurora
  • 8. 

    A manufacturing company captures data from machines running at customer sites. Currently, thousands of machines send data every 5 minutes, and this is expected to grow to hundreds of thousands of machines in the near future. The data is logged with the intent to be analyzed in the future as needed. What is the SIMPLEST method to store this streaming data at scale?

    • Create an Amazon Kinesis Firehouse delivery stream to store the data in Amazon S3.

    • Create an Auto Scaling group of Amazon EC2 servers behind ELBs to write the data into Amazon RDS.

    • Create an Amazon SQS queue, and have the machines write to the queue.

    • Create an Amazon EC2 server farm behind an ELB to store the data in Amazon EBS Cold HDD volumes.

    Correct Answer
    A. Create an Amazon Kinesis Firehouse delivery stream to store the data in Amazon S3.
  • 9. 

    A company hosts a popular web application. The web application connects to a database running in a private VPC subnet. The web servers must be accessible only to customers on an SSL connection. The RDS MySQL database server must be accessible only from the web servers. How should the Architect design a solution to meet the requirements without impacting running applications?

    • Create a network ACL on the web server’s subnet, and allow HTTPS inbound and MySQL outbound. Place both database and web servers on the same subnet.

    • Open an HTTPS port on the security group for web servers and set the source to 0.0.0.0/0. Open the MySQL port on the database security group and attach it to the MySQL instance. Set the source to Web Server Security Group.

    • Create a network ACL on the web server’s subnet, and allow HTTPS inbound, and specify the source as 0.0.0.0/0. Create a network ACL on a database subnet, allow MySQL port inbound for web servers, and deny all outbound traffic.

    • Open the MySQL port on the security group for web servers and set the source to 0.0.0.0/0. Open the HTTPS port on the database security group and attach it to the MySQL instance. Set the source to Web Server Security Group.

    Correct Answer
    A. Open an HTTPS port on the security group for web servers and set the source to 0.0.0.0/0. Open the MySQL port on the database security group and attach it to the MySQL instance. Set the source to Web Server Security Group.
  • 10. 

    A web application stores all data in an Amazon RDS Aurora database instance. A Solutions Architect wants to provide access to the data for a detailed report for the Marketing team, but is concerned that the additional load on the database will affect the performance of the web application. How can the report be created without affecting the performance of the application?

    • Create a read replica of the database.

    • Provision a new RDS instance as a secondary master.

    • Configure the database to be in multiple regions.

    • Increase the number of provisioned storage IOPS.

    Correct Answer
    A. Create a read replica of the database.
  • 11. 

    A Solutions Architect needs to deploy a node.js-based web application that is highly available and scales automatically. The Marketing team needs to roll back on application releases quickly, and they need to have an operational dashboard. The Marketing team does not want to manage deployment of OS patches to the Linux servers. Use of which AWS service will satisfy these requirements?

    • Amazon EC2

    • Amazon API Gateway

    • AWS Elastic Beanstalk

    • Amazon EC2 Container Service

    Correct Answer
    A. AWS Elastic Beanstalk
  • 12. 

    A call center application consists of a three-tier application using Auto Scaling groups to automatically scale resources as needed. Users report that every morning at 9:00 AM the system becomes very slow for about 15 minutes. A Solution Architect determines that a large percentage of the call center staff starts work at 9:00 AM, so Auto Scaling does not have enough time to scale out to meet demand. How can the Architect fix the problem?

    • Change the Auto Scaling groups scale out event to scale based on network utilization.

    • Create an Auto Scaling scheduled action to scale out the necessary resources at 8:30 AM every morning.

    • Use Reserved Instances to ensure the system has reserved the right amount of capacity for the scale-up events.

    • Permanently keep a steady state of instances that is needed at 9:00 AM to guarantee available resources, but leverage Spot Instances.

    Correct Answer
    A. Create an Auto Scaling scheduled action to scale out the necessary resources at 8:30 AM every morning.
  • 13. 

    An application is running on Amazon EC2 instances behind an Application Load Balancer. The instances run in an Auto Scaling group across multiple Availability Zones. Four instances are required to handle a predictable traffic load. The Solutions Architect wants to ensure that the operation is fault-tolerant up to the loss of one Availability Zone. Which is the MOST cost-efficient way to meet these requirements?

    • Deploy two instances in each of three Availability Zones.

    • Deploy two instances in each of two Availability Zones.

    • Deploy four instances in each of two Availability Zones.

    • Deploy one instance in each of three Availability Zones.

    Correct Answer
    A. Deploy two instances in each of three Availability Zones.
  • 14. 

    A Solutions Architect is designing a mobile application that will capture receipt images to track expenses. The Architect wants to store the images on Amazon S3. However, uploading images through the web server will create too much traffic. What is the MOST efficient method to store images from a mobile application on Amazon S3?

    • Upload directly to S3 using a pre-signed URL.

    • Upload to a second bucket, and have a Lambda event copy the image to the primary bucket.

    • Upload to a separate Auto Scaling group of servers behind an ELB Classic Load Balancer, and have them write to the Amazon S3 bucket.

    • Expand the web server fleet with Spot Instances to provide the resources to handle the images.

    Correct Answer
    A. Upload directly to S3 using a pre-signed URL.
  • 15. 

    A Solutions Architect is designing the storage layer for a production relational database. The database will run on Amazon EC2. The database is accessed by an application that performs intensive reads and writes, so the database requires the LOWEST random I/O latency. Which data storage method fulfills the above requirements?

    • Store data in a filesystem backed by Amazon Elastic File System (EFS).

    • Store data in Amazon S3 and use a third-party solution to expose Amazon S3 as a filesystem to the database server.

    • Store data in Amazon Dynamo DB and emulate relational database semantics.

    • Stripe data across multiple Amazon EBS volumes using RAID 0

    Correct Answer
    A. Stripe data across multiple Amazon EBS volumes using RAID 0
  • 16. 

    A company is launching an application that it expects to be very popular. The company needs a database that can scale with the rest of the application. The schema will change frequently. The application cannot afford any downtime for database changes. Which AWS service allows the company to achieve these objectives?

    • Amazon Redshift

    • Amazon DynamoDB

    • Amazon RDS MySQL

    • Amazon Aurora

    Correct Answer
    A. Amazon DynamoDB
  • 17. 

    A Solutions Architect is designing a solution to store a large quantity of event data in Amazon S3. The Architect anticipates that the workload will consistently exceed 100 requests each second. What should the Architect do in Amazon S3 to optimize performance?

    • Randomize a key name prefix.

    • Store the event data in separate buckets.

    • Randomize the key name suffix.

    • Use Amazon S3 Transfer Acceleration.

    Correct Answer
    A. Randomize a key name prefix.
  • 18. 

    A Solution Architect has a two-tier application with a single Amazon EC2 instance web server and Amazon RDS MySQL Multi-AZ DB instances. The Architect is re-architecting the application for high availability by adding instances in a second Availability Zone. Which additional services will improve the availability of the application? (Choose two.)

    • Auto Scaling group

    • AWS CloudTrail

    • ELB Classic Load Balancer

    • Amazon DynamoDB

    • Amazon ElastiCache

    Correct Answer(s)
    A. Auto Scaling group
    A. ELB Classic Load Balancer
  • 19. 

    A company hosts a website on premises. The website has a mix of static and dynamic content, but users experience latency when loading static files. Which AWS service can help reduce latency?

    • Amazon CloudFront with on-premises servers as the origin

    • ELB Application Load Balancer

    • Amazon Route 53 latency-based routing

    • Amazon EFS to store and server static files

    Correct Answer
    A. Amazon CloudFront with on-premises servers as the origin
  • 20. 

    A company wants to analyze all of its sales information aggregated over the last 12 months. The company expects there to be over 10TB of data from multiple sources. What service should be used?

    • Amazon DynamoDB

    • Amazon Aurora MySQL

    • Amazon RDS MySQL

    • Amazon Redshift

    Correct Answer
    A. Amazon Redshift
  • 21. 

    A company has an Amazon RDS database backing its production website. The Sales team needs to run queries against the database to track training program effectiveness. Queries against the production database cannot impact performance, and the solution must be easy to maintain. How can these requirements be met?

    • Use an Amazon Redshift database. Copy the product database into Redshift and allow the team to query it.

    • Use an Amazon RDS read replica of the production database and allow the team to query against it.

    • Use multiple Amazon EC2 instances running replicas of the production database, placed behind a load balancer.

    • Use an Amazon DynamoDB table to store a copy of the data.

    Correct Answer
    A. Use an Amazon RDS read replica of the production database and allow the team to query against it.
  • 22. 

    A company wants to improve the performance of their web application after receiving customer complaints. An analysis concluded that the same complex database queries were causing increased latency. What should a Solutions Architect recommend to improve the application’s performance?

    • Migrate the database to MySQL.

    • Use Amazon RedShift to analyze the queries.

    • Integrate Amazon ElastiCache into the application.

    • Use a Lambda-triggered request to the backend database.

    Correct Answer
    A. Integrate Amazon ElastiCache into the application.
  • 23. 

    A restaurant reservation application needs the ability to maintain a waiting list. When a customer tries to reserve a table, and none are available, the customer must be put on the waiting list, and the application must notify the customer when a table becomes free. What service should the Solutions Architect recommend to ensure that the system respects the order in which the customer requests are put onto the waiting list?

    • Amazon SNS

    • AWS Lambda with sequential dispatch

    • A FIFO queue in Amazon SQS

    • A standard queue in Amazon SQS

    Correct Answer
    A. A FIFO queue in Amazon SQS
  • 24. 

    An interactive, dynamic website runs on Amazon EC2 instances in a single subnet behind an ELB Classic Load Balancer. Which design changes will make the site more highly available?

    • Move some Amazon EC2 instances to a subnet in a different AZ"

    • Move the website to Amazon S3.

    • Change the ELB to an Application Load Balancer.

    • Move some Amazon EC2 instances to a subnet in the same Availability Zone.

    Correct Answer
    A. Move some Amazon EC2 instances to a subnet in a different AZ"
  • 25. 

    A Solutions Architect is designing a VPC. Instances in a private subnet must be able to establish IPv6 traffic to the Internet. The design must scale automatically and not incur any additional cost. This can be accomplished with:

    • An egress-only internet gateway

    • A NAT gateway

    • A custom NAT instance

    • A VPC endpoint

    Correct Answer
    A. An egress-only internet gateway
  • 26. 

    A Solutions Architect is designing a stateful web application that will run for one year (24/7) and then be decommissioned. Load on this platform will be constant, using a number of r4.8xlarge instances. Key drivers for this system include high availability, but elasticity is not required. What is the MOST cost-effective way to purchase compute for this platform?

    • Scheduled Reserved Instances

    • Convertible Reserved Instances

    • Standard Reserved Instances

    • Spot Instances

    Correct Answer
    A. Standard Reserved Instances
  • 27. 

    A Solutions Architect is designing an Amazon VPC. Applications in the VPC must have private connectivity to Amazon DynamoDB in the same AWS Region. The design should route DynamoDB traffic through:

    • VPC peering connection.

    • NAT gateway

    • VPC endpoint

    • AWS Direct Connect

    Correct Answer
    A. VPC endpoint
  • 28. 

    Two Auto Scaling applications, Application A and Application B, currently run within a shared set of subnets. A Solutions Architect wants to make sure that Application A can make requests to Application B, but Application B should be denied from making requests to Application A. Which is the SIMPLEST solution to achieve this policy?

    • Using security groups that reference the security groups of the other application

    • Using security groups that reference the application servers IP addresses

    • Using Network Access Control Lists to allow/deny traffic based on application IP addresses

    • Migrating the applications to separate subnets from each other

    Correct Answer
    A. Using security groups that reference the security groups of the other application
  • 29. 

    A Solutions Architect is designing a solution that can monitor memory and disk space utilization of all Amazon EC2 instances running Amazon Linux and Windows. Which solution meets this requirement?  

    • Default Amazon CloudWatch metrics.

    • Custom Amazon CloudWatch metrics.

    • Amazon Inspector resource monitoring.

    • Default monitoring of Amazon EC2 instances.

    Correct Answer
    A. Custom Amazon CloudWatch metrics.
  • 30. 

    A Solution Architect is designing a three-tier web application. The Architect wants to restrict access to the database tier to accept traffic from the application servers only. However, these application servers are in an Auto Scaling group and may vary in quantity. How should the Architect configure the database servers to meet the requirements?

    • Configure the database security group to allow database traffic from the application server IP addresses.

    • Configure the database security group to allow database traffic from the application server security group.

    • Configure the database subnet network ACL to deny all inbound non-database traffic from the application-tier subnet.

    • Configure the database subnet network ACL to allow inbound database traffic from the application-tier subnet.

    Correct Answer
    A. Configure the database security group to allow database traffic from the application server security group.
  • 31. 

    An organization has a long-running image processing application that runs on Spot Instances that will be terminated when interrupted. A highly available workload must be designed to respond to Spot Instance interruption notices. The solution must include a two-minute warning when there is not enough capacity. How can these requirements be met?

    • Use Amazon CloudWatch Events to invoke an AWS Lambda function that can launch On-Demand Instances.

    • Regularly store data from the application on Amazon DynamoDB. Increase the maximum number of instances in the AWS Auto Scaling group.

    • Manually place a bid for additional Spot Instances at a higher price in the same AWS Region and Availability Zone.

    • Ensure that the Amazon Machine Image associated with the application has the latest configurations for the launch configuration.

    Correct Answer
    A. Use Amazon CloudWatch Events to invoke an AWS Lambda function that can launch On-Demand Instances.
  • 32. 

    A company must collect temperature data from thousands of remote weather devices. The company must also store this data in a data warehouse to run aggregations and visualizations. Which services will meet these requirements? (Choose two.)

    • Amazon Kinesis Data Firehouse

    • Amazon SQS

    • Amazon Redshift

    • Amazon SNS

    • Amazon DynamoDB

    Correct Answer(s)
    A. Amazon Kinesis Data Firehouse
    A. Amazon Redshift
  • 33. 

    An application hosted on AWS uses object storage for storing internal reports that are accessed daily by the CFO. Currently, these reports are publicly available. How should a Solutions Architect re-design this architecture to prevent unauthorized access to these reports?

    • Encrypt the files on the client side and store the files on Amazon Glacier, then decrypt the reports on the client side.

    • Move the files to Amazon ElastiCache and provide a username and password for downloading the reports.

    • Specify the use of AWS KMS server-side encryption at the time of an object creation on Amazon S3.

    • Store the files on Amazon S3 and use the application to generate S3 pre-signed URLs to users.

    Correct Answer
    A. Store the files on Amazon S3 and use the application to generate S3 pre-signed URLs to users.
  • 34. 

    An on-premises database is experiencing significant performance problems when running SQL queries. With 10 users, the lookups are performing as expected. As the number of users increases, the lookups take three times longer than expected to return values to an application.   Which action should a Solutions Architect take to maintain performance as the user count increases?

    • Use Amazon SQS.

    • Deploy Multi-AZ RDS MySQL

    • Configure Amazon RDS with additional read replicas.

    • Migrate from MySQL to RDS Microsoft SQL Server.

    Correct Answer
    A. Configure Amazon RDS with additional read replicas.
  • 35. 

    An application runs on Amazon EC2 instances in an Auto Scaling group. When instances are terminated, the Systems Operations team cannot determine the route cause, because the logs reside on the terminated instances and are lost. How can the root cause be determined?

    • Use ephemeral volumes to store the log files.

    • Use a scheduled Amazon CloudWatch Event to take regular Amazon EBS snapshots.

    • Use an Amazon CloudWatch agent to push the logs to Amazon CloudWatch Logs.

    • Use AWS CloudTrail to pull the logs from the Amazon EC2 instances.

    Correct Answer
    A. Use an Amazon CloudWatch agent to push the logs to Amazon CloudWatch Logs.
  • 36. 

    An application stack includes an Elastic Load Balancer in a public subnet, a fleet of Amazon EC2 instances in an Auto Scaling group, and an Amazon RDS MySQL cluster. Users connect to the application from the Internet. The application servers and database must be secure. How should a Solutions Architect perform this task?

    • Create a private subnet for the Amazon EC2 instances and a public subnet for the Amazon RDS cluster.

    • Create a private subnet for the Amazon EC2 instances and a private subnet for the Amazon RDS cluster.

    • Create a public subnet for the Amazon EC2 instances and a private subnet for the Amazon RDS cluster.

    • Create a public subnet for the Amazon EC2 instances and a public subnet for the Amazon RDS cluster.

    Correct Answer
    A. Create a private subnet for the Amazon EC2 instances and a private subnet for the Amazon RDS cluster.
  • 37. 

    An organization designs a mobile application for their customers to upload photos to a site. The application needs a secure login with MFA. The organization wants to limit the initial build time and maintenance of the solution. Which solution should a Solutions Architect recommend to meet the requirements?

    • Use Amazon Cognito Identity with SMS-based MFA.

    • Edit AWS IAM policies to require MFA for all users.

    • Federate IAM against corporate AD that requires MFA.

    • Use Amazon API Gateway and require SSE for photos.

    Correct Answer
    A. Use Amazon Cognito Identity with SMS-based MFA.
  • 38. 

    A media company has deployed a multi-tier architecture on AWS. Web servers are deployed in two Availability Zones using an Auto Scaling group with a default Auto Scaling termination policy. The web servers Auto Scaling group currently has 15 instances running. Which instance will be terminated first during a scale-in operation?

    • The instance with the oldest launch configuration.

    • The instance in the Availability Zone that has most instances.

    • The instance closest to the next billing hour.

    • The oldest instance in the group.

    Correct Answer
    A. The instance in the Availability Zone that has most instances.
  • 39. 

    Which one do you like?

    • Option 1

    • Option 2

    • Option 3

    • Option 4

    Correct Answer
    A. Option 1
  • 40. 

    A customer owns a MySQL database that is accessed by various clients who expect, at most, 100 ms latency on requests. Once a record is stored in the database, it rarely changed. Clients only access one record at a time. Database access has been increasing exponentially due to increased client demand. The resultant load will soon exceed the capacity of the most expensive hardware available for purchase. The customer wants to migrate to AWS, and is willing to change database systems. Which service would alleviate the database load issue and offer virtually unlimited scalability for the future?

    • Amazon RDS

    • Amazon DynamoDB

    • Amazon Redshift

    • AWS Data Pipeline

    Correct Answer
    A. Amazon DynamoDB
  • 41. 

    A Solutions Architect is designing a web application that is running on an Amazon EC2 instance. The application stores data in DynamoDB. The Architect needs to secure access to the DynamoDB table. What combination of steps does AWS recommend to achieve secure authorization? (Select two.)

    • Store an access key on the Amazon EC2 instance with rights to the Dynamo DB table.

    • Attach an IAM user to the Amazon EC2 instance.

    • Create an IAM role with permissions to write to the DynamoDB table.

    • Attach an IAM role to the Amazon EC2 instance.

    • Attach an IAM policy to the Amazon EC2 instance.

    Correct Answer(s)
    A. Create an IAM role with permissions to write to the DynamoDB table.
    A. Attach an IAM role to the Amazon EC2 instance.
  • 42. 

    A company runs a legacy application with a single-tier architecture on an Amazon EC2 instance. Disk I/O is low, with occasional small spikes during business hours. The company requires the instance to be stopped from 8 PM to 8 AM daily. Which storage option is MOST appropriate for this workload?

    • Amazon EC2 instance storage

    • Amazon EBS General Purpose SSD (gp2) storage

    • Amazon S3

    • Amazon EBS Provision IOPS SSD (io1) storage

    Correct Answer
    A. Amazon EBS General Purpose SSD (gp2) storage
  • 43. 

    A Solutions Architect is deploying a new production MySQL database on AWS. It is critical that the database is highly available. What should the Architect do to achieve this goal with Amazon RDS?

    • Create a read replica of the primary database and deploy it in a different AWS Region.

    • Enable multi-AZ to create a standby database in a different Availability Zone.

    • Enable multi-AZ to create a standby database in a different AWS Region.

    • Create a read replica of the primary database and deploy it in a different Availability Zone.

    Correct Answer
    A. Enable multi-AZ to create a standby database in a different Availability Zone.
  • 44. 

    A customer has written an application that uses Amazon S3 exclusively as a data store. The application works well until the customer increases the rate at which the application is updating information. The customer now reports that outdated data occasionally appears when the application accesses objects in Amazon S3. What could be the problem, given that the application logic is otherwise correct?

    • The application is reading parts of objects from Amazon S3 using a range header.

    • The application is reading objects from Amazon S3 using parallel object requests.

    • The application is updating records by writing new objects with unique keys.

    • The application is updating records by overwriting existing objects with the same keys.

    Correct Answer
    A. The application is updating records by overwriting existing objects with the same keys.
  • 45. 

    A legacy application needs to interact with local storage using iSCSI. A team needs to design a reliable storage solution to provision all new storage on AWS. Which storage solution meets the legacy application requirements?

    • AWS Snowball storage for the legacy application until the application can be re-architected.

    • AWS Storage Gateway in cached mode for the legacy application storage to write data to Amazon S3.

    • AWS Storage Gateway in stored mode for the legacy application storage to write data to Amazon S3.

    • An Amazon S3 volume mounted on the legacy application server locally using the File Gateway service

    Correct Answer
    A. AWS Storage Gateway in cached mode for the legacy application storage to write data to Amazon S3.
  • 46. 

    An application is running on an Amazon EC2 instance in a private subnet. The application needs to read and write data onto Amazon Kinesis Data Streams, and corporate policy requires that this traffic should not go to the internet. How can these requirements be met?

    • Configure a NAT gateway in a public subnet and route all traffic to Amazon Kinesis through the NAT gateway.

    • Configure a gateway VPC endpoint for Kinesis and route all traffic to Kinesis through the gateway VPC endpoint.

    • Configure an interface VPC endpoint for Kinesis and route all traffic to Kinesis through the gateway VPC endpoint.

    • Configure an AWS Direct Connect private virtual interface for Kinesis and route all traffic to Kinesis through the virtual interface.

    Correct Answer
    A. Configure an interface VPC endpoint for Kinesis and route all traffic to Kinesis through the gateway VPC endpoint.
  • 47. 

    A Solutions Architect is developing a new web application on AWS. The Architect expects the application to become very popular, so the application must scale to support the load. The Architect wants to focus on software development and deploying new features without provisioning or managing instances. What solution is appropriate?

    • Amazon API Gateway and AWS Lambda

    • Elastic Load Balancing with Auto Scaling groups and Amazon EC2

    • Amazon API Gateway and Amazon EC2

    • Amazon CloudFront and AWS Lambda

    Correct Answer
    A. Amazon API Gateway and AWS Lambda
  • 48. 

    Which requirements must be met in order for a Solutions Architect to specify that an Amazon EC2 instance should stop rather than terminate when its Spot Instance is interrupted? (Choose two.)

    • The Spot Instance request type must be one-time.

    • The Spot Instance request type must be persistent.

    • The root volume must be an Amazon EBS volume.

    • The root volume must be an instance store volume.

    • The launch configuration is changed.

    Correct Answer(s)
    A. The Spot Instance request type must be persistent.
    A. The root volume must be an Amazon EBS volume.
  • 49. 

    A company has a Node.js application running on Amazon EC2 that currently retrieves data for customers from a DynamoDB table. The company is seeing many repeat queries for the same items, and the number of queries is continuing to increase as the application gains popularity. What solution will reduce the number of read capacity units (RCUs) required while minimizing the amount of refactoring that must be done to the application?

    • Use Amazon ElastiCache to provide a caching layer

    • Use Amazon ElastiCache to provide a caching layer

    • Use Amazon DynamoDB Accelerator (DAX) to provide a caching layer

    • Obtain Reserved Capacity for Amazon DynamoDB to manage the increased number of queries

    Correct Answer
    A. Use Amazon DynamoDB Accelerator (DAX) to provide a caching layer

Quiz Review Timeline (Updated): Feb 24, 2020 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Feb 24, 2020
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 10, 2019
    Quiz Created by
    Catherine Halcomb
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