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AWS Certified Developer Associate Practice Exam Questions 1
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Questions in this quiz (65)
1An application uses an Amazon DynamoDB table that is 50 GB in size and provisioned with 10,000 read capacity units (RCUs) per second. The table must be scanned during non-peak hours when normal traffic consumes around 5,000 RCUs. The Developer must scan the whole table in the shortest possible time whilst ensuring the normal workload is not affected.
How would the Developer optimize this scan cost-effectively?- AUse the Parallel Scan API operation and limit the rate
- BUse sequential scans and apply a FilterExpression
- CIncrease read capacity units during the scan operation
- DUse sequential scans and set the ConsistentRead parameter to false
2A company needs to store sensitive documents on Amazon S3. The documents should be encrypted in transit using SSL/TLS and then be encrypted for storage at the destination. The company do not want to manage any of the encryption infrastructure or customer master keys and require the most cost-effective solution.
What is the MOST suitable option to encrypt the data?- AServer-Side Encryption with Amazon S3-Managed Keys (SSE-S3)
- BServer-Side Encryption with Customer Master Keys (CMKs) Stored in AWS Key Management Service (SSE-KMS) using customer managed CMKs
- CServer-Side Encryption with Customer-Provided Keys (SSE-C)
- DClient-side encryption with Amazon S3 managed keys
3A Developer has made an update to an application. The application serves users around the world and uses Amazon CloudFront for caching content closer to users. It has been reported that after deploying the application updates, users are not able to see the latest changes.
How can the Developer resolve this issue?- AInvalidate all the application objects from the edge caches
- BRemove the origin from the CloudFront configuration and add it again
- CDisable forwarding of query strings and request headers from the CloudFront distribution configuration
- DDisable the CloudFront distribution and enable it again to update all the edge locations
4A Developer is creating a new web application that will be deployed using AWS Elastic Beanstalk from the AWS Management Console. The Developer is about to create a source bundle which will be uploaded using the console.
Which of the following are valid requirements for creating the source bundle? (Select TWO.)- AMust not include a parent folder or top-level directory
- BMust not exceed 512 MB
- CMust include the cron.yaml file
- DMust include a parent folder or top-level directory
- EMust consist of one or more ZIP files
5A Developer is building an application that will store data relating to financial transactions in multiple DynamoDB tables. The Developer needs to ensure the transactions provide atomicity, isolation, and durability (ACID) and that changes are committed following an all-or nothing paradigm.
What write API should be used for the DynamoDB table?- ATransactional
- BStandard
- CStrongly consistent
- DEventually consistent
6A serverless application uses an Amazon API Gateway and AWS Lambda. The application processes data submitted in a form by users of the application and certain data must be stored and available to subsequent function calls.
What is the BEST solution for storing this data?- AStore the data in an Amazon DynamoDB table
- BStore the data in an Amazon Kinesis Data Stream
- CStore the data in the /tmp directory
- DStore the data in an Amazon SQS queue
7A website is deployed in several AWS regions. A Developer needs to direct global users to the website that provides the best performance.
How can the Developer achieve this?- ACreate A records in AWS Route 53 and use a latency-based routing policy
- BCreate Alias records in AWS Route 53 and direct the traffic to an Elastic Load Balancer
- CCreate A records in AWS Route 53 and use a weighted routing policy
- DCreate CNAME records in AWS Route 53 and direct traffic to Amazon CloudFront
8A Developer is creating a serverless application that uses an Amazon DynamoDB table. The application must make idempotent, all-or-nothing operations for multiple groups of write actions.
Which solution will meet these requirements?- AUpdate the items in the table using the TransactWriteltems operation to group the changes
- BUpdate the items in the table using the BatchWriteltem operation and configure idempotency at the table level
- CEnable DynamoDB streams and capture new images. Update the items in the table using the BatchWriteltem
- DCreate an Amazon SQS FIFO queue and use the SendMessageBatch operation to group the changes
9A developer is troubleshooting problems with a Lambda function that is invoked by Amazon SNS and repeatedly fails. How can the developer save discarded events for further processing?
- AConfigure a Dead Letter Queue (DLQ)
- BEnable CloudWatch Logs for the Lambda function
- CEnable Lambda streams
- DEnable SNS notifications for failed events
10A company runs many microservices applications that use Docker containers. The company are planning to migrate the containers to Amazon ECS. The workloads are highly variable and therefore the company prefers to be charged per running task.
Which solution is the BEST fit for the company’s requirements?- AAmazon ECS with the Fargate launch type
- BAmazon ECS with the EC2 launch type
- CAn Amazon ECS Service with Auto Scaling
- DAn Amazon ECS Cluster with Auto Scaling
11A serverless application uses an AWS Lambda function to process Amazon S3 events. The Lambda function executes 20 times per second and takes 20 seconds to complete each execution.
How many concurrent executions will the Lambda function require?- A40
- B5
- C400
- D20
12An AWS Lambda function has been packaged for deployment to multiple environments including development, test, and production. The Lambda function uses an Amazon RDS MySQL database for storing data. Each environment has a different RDS MySQL database.
How can a Developer configure the Lambda function package to ensure the correct database connection string is used for each environment?- AUse environment variables for the database connection strings
- BUse a separate function for development and production
- CInclude the resources in the function code
- DUse layers for storing the database connection strings
13A team of Developers require read-only access to an Amazon DynamoDB table. The Developers have been added to a group. What should an administrator do to provide the team with access whilst following the principal of least privilege?
- ACreate a customer managed policy with read only access to DynamoDB and specify the ARN of the table for the “Resource” element. Attach the policy to the group
- BAssign the AmazonDynamoDBReadOnlyAccess AWS managed policy to the group
- CAssign the AWSLambdaDynamoDBExecutionRole AWS managed policy to the group
- DCreate a customer managed policy with read/write access to DynamoDB for all resources. Attach the policy to the group
14A company runs a legacy application that uses an XML-based SOAP interface. The company needs to expose the functionality of the service to external customers and plans to use Amazon API Gateway.
How can a Developer configure the integration?- ACreate a RESTful API using Amazon API Gateway. Transform the incoming JSON into a valid XML message for the SOAP interface using mapping templates
- BCreate a RESTful API using Amazon API Gateway. Pass the incoming JSON to the SOAP interface through an Application Load Balancer
- CCreate a SOAP API using Amazon API Gateway. Transform the incoming JSON into a valid XML message for the SOAP interface using AWS Lambda
- DCreate a SOAP API using Amazon API Gateway. Pass the incoming JSON to the SOAP interface through a Network Load Balancer
15A critical application runs on an Amazon EC2 instance. A Developer has configured a custom Amazon CloudWatch metric that monitors application availability with a data granularity of 1 second. The Developer must be notified within 30 seconds if the application experiences any issues.
What should the Developer do to meet this requirement?- AConfigure a high-resolution CloudWatch alarm and use Amazon SNS to send the alert
- BSpecify an Amazon SNS topic for alarms when issuing the put-metric-data AWS CLI command
- CUse Amazon CloudWatch Logs Insights and trigger an Amazon Eventbridge rule to send a notification
- DUse a default CloudWatch metric, configure an alarm, and use Amazon SNS to send the alert
16A Developer is designing a fault-tolerant application that will use Amazon EC2 instances and an Elastic Load Balancer. The Developer needs to ensure that if an EC2 instance fails session data is not lost. How can this be achieved?
- AUse Amazon DynamoDB to perform scalable session handling
- BEnable Sticky Sessions on the Elastic Load Balancer
- CUse an EC2 Auto Scaling group to automatically launch new instances
- DUse Amazon SQS to save session data
17Change management procedures at an organization require that a log is kept recording activity within AWS accounts. The activity that must be recorded includes API activity related to creating, modifying or deleting AWS resources.
Which AWS service should be used to record this information- AAmazon CloudTrail
- BAmazon CloudWatch
- CAWS X-Ray
- DAWS OpsWorks
18A Development team would use a GitHub repository and would like to migrate their application code to AWS CodeCommit.
What needs to be created before they can migrate a cloned repository to CodeCommit over HTTPS?- AA set of Git credentials generated with IAM
- BA GitHub secure authentication token
- CA public and private SSH key file
- DAn Amazon EC2 IAM role with CodeCommit permissions
19An application uses AWS Lambda which makes remote calls to several downstream services. A developer wishes to add data to custom subsegments in AWS X-Ray that can be used with filter expressions. Which type of data should be used?
- AAnnotations
- BMetadata
- CTrace ID
- DDaemon
20An application serves customers in several different geographical regions. Information about the location users connect from is written to logs stored in Amazon CloudWatch Logs. The company needs to publish an Amazon CloudWatch custom metric that tracks connections for each location.
Which approach will meet these requirements?- ACreate a CloudWatch metric filter to extract metrics from the log files with location as a dimension
- BCreate a CloudWatch Logs Insights query to extract the location information from the logs and to create a custom metric with location as a dimension
- CConfigure a CloudWatch Events rule that creates a custom metric from the CloudWatch Logs group
- DStream data to an Amazon Elasticsearch cluster in near-real time and export a custom metric
21A developer is preparing to deploy a Docker container to Amazon ECS using CodeDeploy. The developer has defined the deployment actions in a file. What should the developer name the file?
- Aappspec.yml
- Bbuildspec.yml
- Ccron.yml
- Dappspec.json
22An application needs to generate SMS text messages and emails for a large number of subscribers. Which AWS service can be used to send these messages to customers
- AAmazon SNS
- BAmazon SES
- CAmazon SQS
- DAmazon SWF
23A company has an application that logs all information to Amazon S3. Whenever there is a new log file, an AWS Lambda function is invoked to process the log files. The code works, gathering all of the necessary information. However, when checking the Lambda function logs, duplicate entries with the same request ID are found.
What is the BEST explanation for the duplicate entries?- AThe Lambda function failed, and the Lambda service retried the invocation with a delay
- BThe S3 bucket name was specified incorrectly
- CThere was an S3 outage, which caused duplicate entries of the same log file
- DThe application stopped intermittently and then resumed
24A Developer is setting up a code update to Amazon ECS using AWS CodeDeploy. The Developer needs to complete the code update quickly. Which of the following deployment types should the Developer use?
- ABlue/green
- BCanary
- CLinear
- DIn-place
25An AWS Lambda function authenticates to an external web site using a regularly rotated user name and password. The credentials need to be stored securely and must not be stored in the function code.
What combination of AWS services can be used to achieve this requirement? (Select TWO.)- AAWS Systems Manager Parameter Store
- BAWS Key Management Store (KMS)
- CAWS Certificate Manager (ACM)
- DAWS Artifact
- EAmazon GuardDuty
26A CloudFormation stack needs to be deployed in several regions and requires a different Amazon Machine Image (AMI) in each region. Which AWS CloudFormation template key can be used to specify the correct AMI for each region?
- AMappings
- BOutputs
- CParameters
- DResources
27A Developer will be launching several Docker containers on a new Amazon ECS cluster using the EC2 Launch Type. The containers will all run a web service on port 80.
What is the EASIEST way the Developer can configure the task definition to ensure the web services run correctly and there are no port conflicts on the host instances?- ASpecify port 80 for the container port and port 0 for the host port
- BSpecify port 80 for the container port and a unique port number for the host port
- CSpecify a unique port number for the container port and port 80 for the host port
- DLeave both the container port and host port configuration blank
28A Developer attempted to run an AWS CodeBuild project, and received an error. The error stated that the length of all environment variables exceeds the limit for the combined maximum of characters. What is the recommended solution?
- AUse AWS Systems Manager Parameter Store to store large numbers of environment variables
- BAdd the export LC_ALL=”en_US.utf8” command to the pre_build section to ensure POSIX localization
- CUse Amazon Cognito to store key-value pairs for large numbers of environment variables
- DUpdate the settings for the build project to use an Amazon S3 bucket for large numbers of environment variables
29An e-commerce web application that shares session state on-premises is being migrated to AWS. The application must be fault tolerant, natively highly scalable, and any service interruption should not affect the user experience.
What is the best option to store the session state?- AStore the session state in Amazon ElastiCache
- BStore the session state in Amazon CloudFront
- CStore the session state in Amazon S3
- DEnable session stickiness using elastic load balancers
30A Developer is deploying an AWS Lambda update using AWS CodeDeploy. In the appspec.yaml file, which of the following is a valid structure for the order of hooks that should be specified?
- ABeforeAllowTraffic > AfterAllowTraffic
- BBeforeInstall > AfterInstall > ApplicationStart > ValidateService
- CBeforeInstall > AfterInstall > AfterAllowTestTraffic > BeforeAllowTraffic > AfterAllowTraffic
- DBeforeBlockTraffic > AfterBlockTraffic > BeforeAllowTraffic > AfterAllowTraffic
31A Developer is writing code to run in a cron job on an Amazon EC2 instance that sends status information about the application to Amazon CloudWatch.
Which method should the Developer use?- AUse the AWS CLI put-metric-data command
- BUse the AWS CLI put-metric-alarm command
- CUse the unified CloudWatch agent to publish custom metrics
- DUse the CloudWatch console with detailed monitoring
32A Developer has been tasked by a client to create an application. The client has provided the following requirements for the application:
· Performance efficiency of seconds with up to a minute of latency
· Data storage requirements will be up to thousands of terabytes
· Per-message sizes may vary between 100 KB and 100 MB
· Data can be stored as key/value stores supporting eventual consistency
What is the MOST cost-effective AWS service to meet these requirements?- AAmazon S3
- BAmazon DynamoDB
- CAmazon RDS (with a MySQL engine)
- DAmazon ElastiCache
33A company has three different environments: Development, QA, and Production. The company wants to deploy its code first in the Development environment, then QA, and then Production.
Which AWS service can be used to meet this requirement?- AUse AWS CodeDeploy to create multiple deployment groups
- BUse AWS CodeCommit to create multiple repositories to deploy the application
- CUse AWS CodeBuild to create, configure, and deploy multiple build application projects
- DUse AWS Data Pipeline to create multiple data pipeline provisions to deploy the application
34A developer has deployed an application on an Amazon EC2 instance in a private subnet within a VPC. The subnet does not have Internet connectivity. The developer would like to write application logs to an Amazon S3 bucket. What MUST be configured to enable connectivity?
- AA VPC endpoint should be provisioned for S3
- BAn IAM role must be added to the instance that has permissions to write to the S3 bucket
- CA bucket policy needs to be added specifying the principles that are allowed to write data to the bucket
- DA VPN should be established to enable private connectivity to S3
35A Developer needs to scan a full DynamoDB 50GB table within non-peak hours. About half of the strongly consistent RCUs are typically used during non-peak hours and the scan duration must be minimized.
How can the Developer optimize the scan execution time without impacting production workloads?- AUse parallel scans while limiting the rate
- BUse sequential scans
- CIncrease the RCUs during the scan operation
- DChange to eventually consistent RCUs during the scan operation
36A Developer is deploying an application in a microservices architecture on Amazon ECS. The Developer needs to choose the best task placement strategy to MINIMIZE the number of instances that are used. Which task placement strategy should be used?
- Abinpack
- Brandom
- Cspread
- Dweighted
37An application component writes thousands of item-level changes to a DynamoDB table per day. The developer requires that a record is maintained of the items before they were modified. What MUST the developer do to retain this information? (Select TWO.)
- AEnable DynamoDB Streams for the table
- BSet the StreamViewType to OLD_IMAGE
- CCreate a CloudWatch alarm that sends a notification when an item is modified
- DSet the StreamViewType to NEW_AND_OLD_IMAGES
- EUse an AWS Lambda function to extract the item records from the notification and write to an S3 bucket
38An application is being deployed on an Amazon EC2 instance running Linux. The EC2 instance will need to manage other AWS services. How can the EC2 instance be configured to make API calls to AWS service securely?
- ACreate an AWS IAM Role, attach a policy with the necessary privileges and attach the role to the instance’s instance profile
- BRun the “aws configure” AWS CLI command and specify the access key ID and secret access key
- CStore a users’ console login credentials in the application code so the application can call AWS STS and gain temporary security credentials
- DStore the access key ID and secret access key as encrypted AWS Lambda environment variables and invoke Lambda for each API call
39A company has a large Amazon DynamoDB table which they scan periodically so they can analyze several attributes. The scans are consuming a lot of provisioned throughput. What technique can a Developer use to minimize the impact of the scan on the table's provisioned throughput?
- ASet a smaller page size for the scan
- BUse parallel scans
- CDefine a range key on the table
- DPrewarm the table by updating all items
40A Developer has recently created an application that uses an AWS Lambda function, an Amazon DynamoDB table, and also sends notifications using Amazon SNS. The application is not working as expected and the Developer needs to analyze what is happening across all components of the application.
What is the BEST way to analyze the issue?- AEnable X-Ray tracing for the Lambda function
- BCreate an Amazon CloudWatch Events rule
- CAssess the application with Amazon Inspector
- DMonitor the application with AWS Trusted Advisor
41A developer is planning to use a Lambda function to process incoming requests from an Application Load Balancer (ALB). How can this be achieved?
- ACreate a target group and register the Lambda function using the AWS CLI
- BCreate an Auto Scaling Group (ASG) and register the Lambda function in the launch configuration
- CSetup an API in front of the ALB using API Gateway and use an integration request to map the request to the Lambda function
- DConfigure an event-source mapping between the ALB and the Lambda function
42A Developer requires a multi-threaded in-memory cache to place in front of an Amazon RDS database. Which caching solution should the Developer choose?
- AAmazon ElastiCache Memcached
- BAmazon ElastiCache Redis
- CAmazon DynamoDB DAX
- DAmazon RedShift
43A Development team need to push an update to an application that is running on AWS Elastic Beanstalk. The business SLA states that the application must maintain full performance capabilities during updates whilst minimizing cost.
Which Elastic Beanstalk deployment policy should the development team select?- ARolling with additional batch
- BImmutable
- CRolling
- DAll at once
44A decoupled application is using an Amazon SQS queue. The processing layer that is retrieving messages from the queue is not able to keep up with the number of messages being placed in the queue.
What is the FIRST step the developer should take to increase the number of messages the application receives?- AUse the ReceiveMessage API to retrieve up to 10 messages at a time
- BUse the API to update the WaitTimeSeconds parameter to a value other than 0
- CAdd additional Amazon SQS queues and have the application poll those queues
- DConfigure the queue to use short polling
45A company has created a set of APIs using Amazon API Gateway and exposed them to partner companies. The APIs have caching enabled for all stages. The partners require a method of invalidating the cache that they can build into their applications.
What can the partners use to invalidate the API cache?- AThey can pass the HTTP header Cache-Control: max-age=0
- BThey can use the query string parameter INVALIDATE_CACHE
- CThey must wait for the TTL to expire
- DThey can invoke an AWS API endpoint which invalidates the cache
46A Developer has used a third-party tool to build, bundle, and package a software package on-premises. The software package is stored in a local file system and must be deployed to Amazon EC2 instances.
How can the application be deployed onto the EC2 instances?- AUpload the bundle to an Amazon S3 bucket and specify the S3 location when doing a deployment using AWS CodeDeploy
- BUse AWS CodeDeploy and point it to the local file system to deploy the software package
- CCreate a repository using AWS CodeCommit to automatically trigger a deployment to the EC2 instances
- DUse AWS CodeBuild to commit the package and automatically deploy the software package
47A Developer is writing an imaging microservice on AWS Lambda. The service is dependent on several libraries that are not available in the Lambda runtime environment.
- ACreate a ZIP file with the source code and all dependent libraries
- BCreate a ZIP file with the source code and a script that installs the dependent libraries at runtime
- CCreate a ZIP file with the source code and an appspec.yml file. Add the libraries to the appspec.yml file and upload to Amazon S3. Deploy using CloudFormation
- DCreate a ZIP file with the source code and a buildspec.yml file that installs the dependent libraries on AWS Lambda
48A Development team wants to run their container workloads on Amazon ECS. Each application container needs to share data with another container to collect logs and metrics.
What should the Development team do to meet these requirements?- ACreate one task definition. Specify both containers in the definition. Mount a shared volume between those two containers
- BCreate two pod specifications. Make one to include the application container and the other to include the other container. Link the two pods together
- CCreate two task definitions. Make one to include the application container and the other to include the other container. Mount a shared volume between the two tasks
- DCreate a single pod specification. Include both containers in the specification. Mount a persistent volume to both containers
49A Developer is building a three-tier web application that must be able to handle a minimum of 10,000 requests per minute. The requirements state that the web tier should be completely stateless while the application maintains session state data for users.
How can the session state data be maintained externally, whilst keeping latency at the LOWEST possible value?- ACreate an Amazon ElastiCache Redis cluster, then implement session handling at the application level to leverage the cluster for session data storage
- BCreate an Amazon DynamoDB table, then implement session handling at the application level to leverage the table for session data storage
- CCreate an Amazon RedShift instance, then implement session handling at the application level to leverage a database inside the RedShift database instance for session data storage
- DImplement a shared Amazon EFS file system solution across the underlying Amazon EC2 instances, then implement session handling at the application level to leverage the EFS file system for session data storage
50Users of an application using Amazon API Gateway, AWS Lambda and Amazon DynamoDB have reported errors when using the application. Which metrics should a Developer monitor in Amazon CloudWatch to determine the number of client-side and server-side errors?
- A4XXError and 5XXError
- BCacheHitCount and CacheMissCount
- CIntegrationLatency and Latency
- DErrors
51To reduce the cost of API actions performed on an Amazon SQS queue, a Developer has decided to implement long polling. Which of the following modifications should the Developer make to the API actions?
- ASet the ReceiveMessage API with a WaitTimeSeconds of 20
- BSet the SetQueueAttributes API with a DelaySeconds of 20
- CSet the ReceiveMessage API with a VisibilityTimeout of 30
- DSet the SetQueueAttributes with a MessageRetentionPeriod of 60
52An organization developed an application that uses a set of APIs that are being served through Amazon API Gateway. The API calls must be authenticated based on OpenID identity providers such as Amazon, Google, or Facebook. The APIs should allow access based on a custom authorization model.
Which is the simplest and MOST secure design to use to build an authentication and authorization model for the APIs?- AUse Amazon Cognito user pools and a custom authorizer to authenticate and authorize users based on JSON Web Tokens
- BUse Amazon ElastiCache to store user credentials and pass them to the APIs for authentication and authorization
- CUse Amazon DynamoDB to store user credentials and have the application retrieve temporary credentials from AWS STS. Make API calls by passing user credentials to the APIs for authentication and authorization
- DBuild an OpenID token broker with Amazon and Facebook. Users will authenticate with these identify providers and pass the JSON Web Token to the API to authenticate each API call
53A company has implemented AWS CodePipeline to automate its release pipelines. The Development team is writing an AWS Lambda function that will send notifications for state changes of each of the actions in the stages.
Which steps must be taken to associate the Lambda function with the event source?- ACreate an Amazon CloudWatch Events rule that uses CodePipeline as an event source
- BCreate a trigger that invokes the Lambda function from the Lambda console by selecting CodePipeline as the event source
- CCreate an event trigger and specify the Lambda function from the CodePipeline console
- DCreate an Amazon CloudWatch alarm that monitors status changes in CodePipeline and triggers the Lambda function
54A Developer has created a task definition that includes the following JSON code:
"placementStrategy": [
{
"field": "attribute:ecs.availability-zone",
"type": "spread"
},
{
"field": "instanceId",
"type": "spread"
}
]
What is the effect of this task placement strategy?- AIt distributes tasks evenly across Availability Zones and then distributes tasks evenly across the instances within each Availability Zone
- BIt distributes tasks evenly across Availability Zones and then bin packs tasks based on memory within each Availability Zone
- CIt distributes tasks evenly across Availability Zones and then distributes tasks evenly across distinct instances within each Availability Zone
- DIt distributes tasks evenly across Availability Zones and then distributes tasks randomly across instances within each Availability Zone
55A Developer is writing a serverless application that will process data uploaded to a file share. The Developer has created an AWS Lambda function and requires the function to be invoked every 15 minutes to process the data.
What is an automated and serverless way to trigger the functio- ACreate an Amazon CloudWatch Events rule that triggers on a regular schedule to invoke the Lambda function
- BDeploy an Amazon EC2 instance based on Linux, and edit it’s /etc/crontab file by adding a command to periodically invoke the Lambda function
- CConfigure an environment variable named PERIOD for the Lambda function. Set the value at 600
- DCreate an Amazon SNS topic that has a subscription to the Lambda function with a 600-second timer
56An application on-premises uses Linux servers and a relational database using PostgreSQL. The company will be migrating the application to AWS and require a managed service that will take care of capacity provisioning, load balancing, and auto-scaling.
Which combination of services should the Developer use? (Select TWO.)- AAWS Elastic Beanstalk
- BAmazon RDS with PostrgreSQL
- CAmazon EC2 with Auto Scaling
- DAmazon EC2 with PostgreSQL
- EAWS Lambda with CloudWatch Events
57A Development team is involved with migrating an on-premises MySQL database to Amazon RDS. The database usage is very read-heavy. The Development team wants re-factor the application code to achieve optimum read performance for queries.
How can this objective be met?- AAdd a connection string to use an Amazon RDS read replica for read queries
- BAdd database retries to the code and vertically scale the Amazon RDS database
- CUse Amazon RDS with a multi-AZ deployment
- DAdd a connection string to use a read replica on an Amazon EC2 instance
58A company is deploying an on-premise application server that will connect to several AWS services. What is the BEST way to provide the application server with permissions to authenticate to AWS services?
- ACreate an IAM user and generate access keys. Create a credentials file on the application server
- BCreate an IAM role with the necessary permissions and assign it to the application server
- CCreate an IAM group with the necessary permissions and add the on-premise application server to the group
- DCreate an IAM user and generate a key pair. Use the key pair in API calls to AWS services
59A company is deploying a static website hosted from an Amazon S3 bucket. The website must support encryption in-transit for website visitors.
Which combination of actions must the Developer take to meet this requirement? (Select TWO.)- ACreate an Amazon CloudFront distribution. Set the S3 bucket as an origin
- BConfigure an Amazon CloudFront distribution with an SSL/TLS certificate
- CCreate an AWS WAF WebACL with a secure listener
- DConfigure an Amazon CloudFront distribution with an AWS WAF WebACL
- EConfigure the S3 bucket with an SSL/TLS certificate
60An application deployed on AWS Elastic Beanstalk experienced increased error rates during deployments of new application versions, resulting in service degradation for users. The Development team believes that this is because of the reduction in capacity during the deployment steps. The team would like to change the deployment policy configuration of the environment to an option that maintains full capacity during deployment while using the existing instances.
Which deployment policy will meet these requirements while using the existing instances?- ARolling with additional batch
- BAll at once
- CImmutable
- DRolling
61A Developer is creating a web application that will be used by employees working from home. The company uses a SAML directory on-premises for storing user information. The Developer must integrate with the SAML directory and authorize each employee to access only their own data when using the application.
Which approach should the Developer take?- AUse an Amazon Cognito identity pool, federate with the SAML provider, and use a trust policy with an IAM condition key to limit employee access
- BUse Amazon Cognito user pools, federate with the SAML provider, and use user pool groups with an IAM policy
- CCreate the application within an Amazon VPC and use a VPC endpoint with a trust policy to grant access to the employees
- DCreate a unique IAM role for each employee and have each employee assume the role to access the application so they can access their personal data only
62A company is deploying an Amazon Kinesis Data Streams application that will collect streaming data from a gaming application. Consumers will run on Amazon EC2 instances.
In this architecture, what can be deployed on consumers to act as an intermediary between the record processing logic and Kinesis Data Streams and instantiate a record processor for each shard?- AAmazon Kinesis Client Library (KCL)
- BAmazon Kinesis API
- CAWS CLI
- DAmazon Kinesis CLI
63A company is setting up a Lambda function that will process events from a DynamoDB stream. The Lambda function has been created and a stream has been enabled. What else needs to be done for this solution to work?
- AAn event-source mapping must be created on the Lambda side to associate the DynamoDB stream with the Lambda function
- BAn alarm should be created in CloudWatch that sends a notification to Lambda when a new entry is added to the DynamoDB stream
- CAn event-source mapping must be created on the DynamoDB side to associate the DynamoDB stream with the Lambda function
- DUpdate the CloudFormation template to map the DynamoDB stream to the Lambda function
64An X-Ray daemon is being used on an Amazon ECS cluster to assist with debugging stability issues. A developer requires more detailed timing information and data related to downstream calls to AWS services.
What should the developer use to obtain this extra detail?- ASubsegments
- BAnnotations
- CMetadata
- DFilter expressions
65A company will be uploading several terabytes of data to Amazon S3. What is the SIMPLEST solution to ensure that the data is encrypted before it is sent to S3 and whilst in transit?
- AUse client-side encryption with a KMS managed CMK and SSL
- BUse server-side encryption with client provided keys
- CUse client-side encryption and a hardware VPN to a VPC and an S3 endpoint
- DUse server-side encryption with S3 managed keys and SSL
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- Otro AWS Quiz on AWS Certified Developer Associate Practice Exam Questions 1, created by Susana Martin on 16/12/2021.
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