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A company is migrating a distributed application to AWS The application serves variable workloads The legacy platform consists of a primary server trial coordinates jobs across multiple compute nodes The company wants to modernize the application with a solution that maximizes resiliency and scalability.
How should a solutions architect design the architecture to meet these requirements?
A. Configure an Amazon Simple Queue Service (Amazon SQS) queue as a destination for the jobs Implement the compute nodes with Amazon EC2 instances that are managed in an Auto Scaling group. Configure EC2 Auto Scaling to use scheduled scaling
B. Configure an Amazon Simple Queue Service (Amazon SQS) queue as a destination for the jobs Implement the compute nodes with Amazon EC2 Instances that are managed in an Auto Scaling group Configure EC2 Auto Scaling based on the size of the queue
C. Implement the primary server and the compute nodes with Amazon EC2 instances that are managed In an Auto Scaling group. Configure AWS CloudTrail as a destination for the fobs Configure EC2 Auto Scaling based on the load on the primary server
D. implement the primary server and the compute nodes with Amazon EC2 instances that are managed in an Auto Scaling group Configure Amazon EventBridge (Amazon CloudWatch Events) as a destination for the jobs Configure EC2 Auto Scaling based on the load on the compute nodes
Correct Answer: B
A – incorrect: Schedule scaling policy doesn’t make sense.
C, D – incorrect: Primary server should not be in same Auto Scaling group with compute nodes.
B is correct.
A company is planning on deploying a newly built application on AWS in a default VPC. The application will consist of a web layer and a database layer. The web server was created in public subnets, and the MySQL database was created in private subnets.
All subnets are created with the default network ACL settings, and the default security group in the VPC will be replaced with new custom security groups.
A. Create a database server security group with inbound and outbound rules for MySQL port 3306 traffic to and from anywhere (0.0.0.0/0).
B. Create a database server security group with an inbound rule for MySQL port 3300 and specify the source as a web server security group.
C. Create a web server security group within an inbound allow rule for HTTPS port 443 traffic from anywhere (0.0.0.0/0) and an inbound deny rule for IP range 182. 20.0.0/16.
D. Create a web server security group with an inbound rule for HTTPS port 443 traffic from anywhere (0.0.0.0/0). Create network ACL inbound and outbound deny rules for IP range 182. 20.0.0/16.
E. Create a web server security group with inbound and outbound rules for HTTPS port 443 traffic to and from anywhere (0.0.0.0/0). Create a network ACL inbound deny rule for IP range 182. 20.0.0/16.
Correct Answer: BD
A company recently released a new type of internet-connected sensor. The company is expecting to sell thousands of sensors, which are designed to stream high volumes of data each second to a central location.
A solutions architect must design a solution that ingests and stores data so that engineering teams can analyze it in near-real time with millisecond responsiveness. Which solution should the solution architect recommend?
A. Use an Amazon SOS queue to ingest the data. Consume the data with an AWS Lambda function which then stores the data in Amazon Redshift
B. Use on Amazon SQS queue to ingest the data. Consume the data with an AWS Lambda function which then stores the data In Amazon DynamoDB
C. Use Amazon Kinases Data Streams to ingest the data. Consume the data with an AWS Lambda function, which then stores the data m Amazon Redshift
D. Use Amazon Kinesis Data Streams to ingest the data. Consume the data with an AWS Lambda function, which then stores the data m Amazon DynamoDB
Correct Answer: C
A company has a service that produces event data. The company wants to use AWS to process the event data as it is received. The data is written in a specific order that must be maintained throughout processing The company wants to implement a solution that minimizes operational overhead.
How should a solutions architect accomplish this?
A. Create an Amazon Simple Queue Service (Amazon SQS) FIFO queue to hold messages Set up an AWS Lambda function to process messages from the queue
B. Create an Amazon Simple Notification Service (Amazon SNS) topic to deliver notifications containing payloads to process Configure an AWS Lambda function as a subscriber.
C. Create an Amazon Simple Queue Service (Amazon SQS) standard queue to hold messages. Set up an AWS Lambda function to process messages from the queue independently
D. Create an Amazon Simple Notification Service (Amazon SNS) topic to deliver notifications containing payloads to process. Configure an Amazon Simple Queue Service (Amazon SQS) queue as a subscriber.
Correct Answer: A
The details are revealed below URL:
FIFO (First-In-First-Out) queues are designed to enhance messaging between applications when the order of operations and events is critical, or where duplicates can\’t be tolerated. Examples of situations where you might use FIFO queues include the following:
To make sure that user-entered commands are run in the right order. To display the correct product price by sending price modifications in the right order. To prevent a student from enrolling in a course before registering for an account.
A gaming company wants to launch a new internet-facing application in multiple AWS Regions. The application will use the TCP and UDP protocols for communication. The company needs to provide high availability and minimum latency for global users.
Which combination of actions should a solutions architect take to meet these requirements? (Select TWO.)
A. Create internal Network Load Balancers in front of the application in each Region
B. Create external Application Load Balancers in front of the application in each Region
C. Create an AWS Global Accelerator accelerator to route traffic to the load balancers in each Region
D. Configure Amazon Route 53 to use a geolocation routing policy to distribute the traffic
E. Configure Amazon CloudFront to handle the traffic and route requests to the application in each Region
Correct Answer: AC
A company is running an online transaction processing (OLTP) workload on AWS. This workload uses an unencrypted Amazon RDS DB instance in a Multi-AZ deployment. Daily database snapshots are taken from this instance.
What should a solutions architect do to ensure the database and snapshots are always encrypted moving forward?
A. Encrypt a copy of the latest DB snapshot. Replace the existing DB instance by restoring the encrypted snapshot
B. Create a new encrypted Amazon Elastic Block Store (Amazon EBS) volume and copy the snapshots to it Enable encryption on the DB instance
C. Copy the snapshots and enable encryption using AWS Key Management Service (AWS KMS) Restore the encrypted snapshot to an existing DB instance
D. Copy the snapshots to an Amazon S3 bucket that is encrypted using server-side encryption with AWS Key Management Service (AWS KMS) managed keys (SSE-KMS)
Correct Answer: A
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_RestoreFromSnapshot.html#USER_RestoreFromSnapshot.CON Under “Encrypt unencrypted resources” https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSEncryption.html
A company hosts an application on multiple Amazon EC2 instances The application processes messages from an Amazon SQS queue writes to an Amazon RDS table and deletes the message from the queue Occasional duplicate records are found in the RDS table. The SQS queue does not contain any duplicate messages.
What should a solutions architect do to ensure messages are being processed once only?
A. Use the CreateQueue API call to create a new queue
B. Use the Add Permission API call to add appropriate permissions
C. Use the ReceiveMessage API call to set an appropriate wail time
D. Use the ChangeMessageVisibility API call to increase the visibility timeout
Correct Answer: D
The visibility timeout begins when Amazon SQS returns a message. During this time, the consumer processes and deletes the message. However, if the consumer fails before deleting the message and your system doesn’t call the DeleteMessage action for that message before the visibility timeout expires, the message becomes visible to other consumers and the message is received again.
If a message must be received only once, your consumer should delete it within the duration of the visibility timeout.
Keyword: SQS queue writes to an Amazon RDS From this, Option D best suite, and amp; other Options are ruled out [Option A – You can\’t introduce one more Queue in the existing one; Option B – only Permission and amp; Option C – Only Retrieves Messages] FIF O queues are designed to never introduce duplicate messages.
However, your message producer might introduce duplicates in certain scenarios: for example, if the producer sends a message, does not receive a response, and then resends the same message.
Amazon SQS APIs provide deduplication functionality that prevents your message producer from sending duplicates. Any duplicates introduced by the message producer are removed within a 5-minute deduplication interval. For standard queues, you might occasionally receive a duplicate copy of a message (at least- one delivery).
If you use a standard queue, you must design your applications to be idempotent (that is, they must not be affected adversely when processing the same message more than once).
A company runs a photo processing application that needs to frequently upload and download pictures from Amazon S3 buckets that are located in the same AWS Region. A solutions architect has noticed an increased cost in data transfer fees and needs to implement a solution to reduce these costs.
How can the solutions architect meet this requirement?
A. Deploy Amazon API Gateway into a public subnet and adjust the routing table to route S3 calls through It.
B. Deploy a NAT gateway into a public subnet and attach an endpoint policy that allows access to the S3 buckets.
C. Deploy the application Into a public subnet and allow it to route through an internet gateway to access the S3 Buckets
D. Deploy an S3 VPC gateway endpoint into the VPC and attach an endpoint policy that allows access to the S3 buckets.
Correct Answer: D
To reduce costs get rid of NAT Gateway, and VPC endpoint to S3 Close question to Question #4, with the same solution.
A media company is evaluating the possibility of moving its systems to the AWS Cloud The company needs at least 10 TB of storage with the maximum possible I/O performance for video processing.
300 TB of very durable storage for storing media content, and 900 TB of storage to meet requirements for archival media that is not in use anymore.
Which set of services should a solutions architect recommend to meet these requirements?
A. Amazon EBS for maximum performance, Amazon S3 for durable data storage, and Amazon S3 Glacier for archival storage
B. Amazon EBS for maximum performance, Amazon EFS for durable data storage, and Amazon S3 Glacier for archival storage
C. Amazon EC2 instance store for maximum performance. Amazon EFS for durable data storage and Amazon S3 for archival storage
D. Amazon EC2 Instance store for maximum performance. Amazon S3 for durable data storage, and Amazon S3 Glacier for archival storage
Correct Answer: D
Max instance store possible at this time is 30TB for NVMe which has a higher I/O compared to EBS.
is4gen.8xlarge 4 x 7,500 GB (30 TB) NVMe SSD
A company has a multi-tier application that runs six front-end web servers in an Amazon EC2 Auto Scaling group in a single Availability Zone behind an Application Load Balancer (ALB). A solutions architect needs to modify the infrastructure to be highly available without modifying the application.
Which architecture should the solutions architect choose that provides high availability?
A. Create an Auto Scaling group that uses three Instances across each of the tv/o Regions.
B. Modify the Auto Scaling group to use three instances across each of the two Availability Zones.
C. Create an Auto Scaling template that can be used to quickly create more instances in another Region.
D. Change the ALB in front of the Amazon EC2 instances in a round-robin configuration to balance traffic to the web tier.
Correct Answer: B
High availability can be enabled for this architecture quite simply by modifying the existing Auto Scaling group to use multiple availability zones. The ASG will automatically balance the load so you don’t actually need to specify the instances per AZ.
A company is planning to use an Amazon DynamoDB table for data storage. The company is concerned about cost optimization. The table will not be used on most mornings. In the evenings, the read-and-write traffic will often be unpredictable. When traffic spikes occur, they will happen very quickly.
What should a solutions architect recommend?
A. Create a DynamoDB table in on-demand capacity mode.
B. Create a DynamoDB table with a global secondary index.
C. Create a DynamoDB table with provisioned capacity and auto-scaling.
D. Create a DynamoDB table in provisioned capacity mode, and configure it as a global table.
Correct Answer: A
An on-demand mode is a good option if any of the following are true:
– You create new tables with unknown workloads.
-You have unpredictable application traffic.
-You prefer the ease of paying for only what you use.
A solutions architect needs to implement a solution to reduce a company\’s storage costs. All the company\’s data is in the Amazon S3 Standard storage class. The company must keep all data for at least 25 years. Data from the most recent 2 years must be highly available and immediately retrievable.
Which solution will meet these requirements?
A. Set up an S3 Lifecycle policy to transition objects to S3 Glacier Deep Archive immediately.
B. Set up an S3 Lifecycle policy to transition objects to S3 Glacier Deep Archive after 2 years.
C. Use S3 Intelligent-Tiering. Activate the archiving option to ensure that data is archived in S3 Glacier Deep Archive.
D. Set up an S3 Lifecycle policy to transition objects to S3 One Zone-Infrequent Access (S3 One Zone-IA) immediately and to S3 Glacier Deep Archive after 2 years.
Correct Answer: B
Why Not C? Because in Intelligent Tier the objects are automatically moved to different tiers.
The question says “the data from the most recent 2 yrs should be highly available and immediately retrievable”, which means in the intelligent tier, if you activate archiving option(as Option C specifies), the objects will be moved to the Archive tiers
(instant access to deep archive access tiers) in 90 to 730 days. Remember these archive tiers’ performance will be similar to S3 glacier flexible and s3 deep archive which means files cannot be retrieved immediately within 2 yrs.
We have a hard requirement in question which says it should be retrievable immediately for the 2 yrs. which cannot be achieved in the Intelligent tier. So B is the correct option imho.
Because of the above reason, It’s possible only in S3 standard and then configures lifecycle configuration to move to S3 Glacier Deep Archive after 2 yrs.
A company has an application that ingests incoming messages. Dozens of other applications and microservices then quickly consume these messages. The number of messages varies drastically and sometimes increases suddenly to 100,000 each second. The company wants to decouple the solution and increase scalability.
Which solution meets these requirements?
A. Persist the messages to Amazon Kinesis Data Analytics. Configure the consumer applications to read and process the messages.
B. Deploy the ingestion application on Amazon EC2 instances in an Auto Scaling group to scale the number of EC2 instances based on CPU metrics.
C. Write the messages to Amazon Kinesis Data Streams with a single shard. Use an AWS Lambda function to preprocess messages and store them in Amazon DynamoDB. Configure the consumer applications to read from DynamoDB to process the messages.
D. Publish the messages to an Amazon Simple Notification Service (Amazon SNS) topic with multiple Amazon Simple Queue Service (Amazon SOS) subscriptions. Configure the consumer applications to process the messages from the queues.
Correct Answer: D
decoupling an application using sqs and fanout using sns
https://docs.aws.amazon.com/sns/latest/dg/sns-common-scenarios.html (A is wrong Kinesis Analysis does not \’persist\’ by itself.)
A company wants to manage Amazon Machine Images (AMls). The company currently copies AMls to the same AWS Region where the AMls were created. The company needs to design an application that captures AWS API calls and sends alerts whenever the Amazon EC2 Createlmage API operation is called within the company\’s account.
Which solution will meet these requirements with the LEAST operational overhead?
A. Create an AWS Lambda function to query AWS CloudTrail logs and to send an alert when a Createlmage API call is detected
B. Configure AWS CloudTrail with an Amazon Simple Notification Sen/ice (Amazon SNS) notification that occurs when updated logs are sent to Amazon S3 Use Amazon Athena to create a new table and to query on Createlmage when an API call is detected
C. Create an Amazon EventBndge (Amazon CloudWatch Events) rule for the Createlmage API call Configure the target as an Amazon Simple Notification Service (Amazon SNS) topic to send an alert when a Createlmage API call is detected
D. Configure an Amazon Simple Queue Service (Amazon SQS) FIFO queue as a target for AWS CloudTrail logs Create an AWS Lambda function to send an alert to an Amazon Simple Notification Service (Amazon SNS) topic when a Createlmage API call is detected
Correct Answer: D
A company has two applications: a sender application that sends messages with payloads to be processed and a processing application intended to receive the messages with payloads. The company wants to implement an AWS service to handle messages between the two applications.
The sender application can send about 1.000 messages each hour. The messages may take up to 2 days to be processed. If the messages fail to process, they must be retained so that they do not impact the processing of any remaining messages.
Which solution meets these requirements and is the MOST operationally efficient?
A. Set up an Amazon EC2 instance running a Redis database. Configure both applications to use the instance. Store, process, and delete the messages, respectively.
B. Use an Amazon Kinesis data stream to receive the messages from the sender application. Integrate the processing application with the Kinesis Client Library (KCL).
C. Integrate the sender and processor applications with an Amazon Simple Queue Service (Amazon SQS) queue. Configure a dead-letter queue to collect the messages that failed to process.
D. Subscribe the processing application to an Amazon Simple Notification Service (Amazon SNS) topic to receive notifications to process. Integrate the sender application to write to the SNS topic.
Correct Answer: C
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