Dec-2021 Realistic AWS-Developer Exam Dumps with Accurate & Updated Questions
AWS-Developer Exam Dumps - PDF Questions and Testing Engine
The Amazon AWS Certified Developer – Associate exam is developed to evaluate the professionals’ knowledge and skills in developing, deploying, and debugging the applications that are based on Cloud by using AWS as well as its basic architecture. This test is designed to help the candidates effectively develop their knowledge of core devices of Amazon Web Services (AWS) and have best practices in AWS architecture.
NEW QUESTION 191
A Developer has created an S3 bucket s3://mycoolapp and has enabled server across logging that points to the folder s3://mycoolapp/logs. The Developer moved 100 KB of Cascading Style Sheets (CSS) documents to the folder s3://mycoolapp/css, and then stopped work. When the developer came back a few days later, the bucket was 50 GB.
What is the MOST likely cause of this situation?
- A. The CSS files were not compressed and S3 versioning was enabled.
- B. An S3 lifecycle policy has moved the entire CSS file to S3 Infrequent Access.
- C. Logging into the same bucket caused exponential log growth.
- D. S3 replication was enabled on the bucket.
Answer: C
Explanation:
Explanation
Refer AWS documentation - S3 Server logs
To turn on log delivery, you provide the following logging configuration information:
* The name of the target bucket where you want Amazon S3 to save the access logs as objects. You can have logs delivered to any bucket that you own that is in the same Region as the source bucket, including the source bucket itself.We recommend that you save access logs in a different bucket so that you can easily manage the logs. If you choose to save access logs in the source bucket, we recommend that you specify a prefix for all log object keys so that the object names begin with a common string and the log objects are easier to identify.When your source bucket and target bucket are the same bucket, additional logs are created for the logs that are written to the bucket. This behavior might not be ideal for your use case because it could result in a small increase in your storage billing. In addition, the extra logs about logs might make it ha re looking for.
NEW QUESTION 192
A website's page load times are gradually increasing as more users access the system at the same time.
Analysis indicates that a user profile is being loaded from a database in all the web pages being visited by each user and this is increasing the database load and the page load latency. To address this issue the Developer decides to cache the user profile data.
Which caching strategy will address this situation MOST efficiently?
- A. Create an Amazon ElastiCache cluster to cache the user profile data. Use a cache-aside caching strategy.
- B. Create a new Amazon EC2 Instance and run a NoSQL database on it. Cache the profile data within this database using the write-through caching strategy.
- C. Use a dedicated Amazon RDS instance for caching profile data. Use a write-through caching strategy.
- D. Create an ElastiCache cluster to cache the user profile data. Use a write-through caching strategy.
Answer: A
Explanation:
Explanation
https://docs.aws.amazon.com/AmazonElastiCache/latest/mem-ug/Strategies.html
NEW QUESTION 193
A user is enabling logging on a particular bucket. Which of the below mentioned options may be best
suitable to allow access to the log bucket?
- A. Create an IAM Role which has access to the log bucket
- B. It is not possible to enable logging on the S3 bucket
- C. Create an IAM policy and allow log access
- D. Provide ACL for the logging group
Answer: D
Explanation:
The only recommended use case for the S3 bucket ACL is to grant the write permission to the Amazon S3
Log Delivery group to write access log objects to the user's bucket.
Reference: http://docs.aws.amazon.com/AmazonS3/latest/dev/access-policy-alternatives-guidelines.html
NEW QUESTION 194
A user is setting up an Elastic Load Balancer(ELB). Which of the below parameters should the user
consider so as the instance gets registered with the ELB?
- A. Security group
- B. IP address
- C. ELB IP
- D. ELB DNS
Answer: B
Explanation:
The EC2 instances are registered with the load balancer using the IP addresses associated with the
instances. When an instance is stopped and then started, the IP address associated with the instance
changes. This prevents the load balancer from routing traffic to the restarted instance. When the user
stops and then starts registered EC2 instances, it is recommended that to de-register the stopped
instance from load balancer, and then register the restarted instance. Failure to do so may prevent the
load balancer from performing health checks and routing the traffic to the restarted instance.
Question No:
Reference:
http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/TerminologyandKeyConcepts.
html
NEW QUESTION 195
A user has created an EBS instance in the US-East-1a AZ. The user has a volume of 30 GB in the US-East-1b zone. How can the user attach the volume to an instance?
- A. Use the volume replicate function to create a new volume in the US-East-1a and attach that to the volume
- B. Take a snapshot of the volume. Create a new volume in the USEast-1a and attach that to the instance
- C. Use the volume migrate function to move the volume from one AZ to another and attach to the instance
- D. Since both the volume and the instance are in the same region, the user can attach the volume
Answer: B
Explanation:
If an EBS volume is not in the same AZ of an EC2 instance, it cannot be attached to the instance. The only option is to take a snapshot of the volume and create a new volume in the instance's AZ.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSSnapshots.html
NEW QUESTION 196
A user is enabling a static website hosting on an S3 bucket. Which of the below mentioned parameters
cannot be configured by the user?
- A. Conditional redirection on object name
- B. Index document
- C. Conditional error on object name
- D. Error document
Answer: C
Explanation:
To host a static website, the user needs to configure an Amazon S3 bucket for website hosting and then
upload the website contents to the bucket. The user can configure the index, error document as well as
configure the conditional routing of on object name.
Reference: http://docs.aws.amazon.com/AmazonS3/latest/dev/HowDoIWebsiteConfiguration.html
NEW QUESTION 197
What is the maximum number of tags that a user can assign to an EC2 instance?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
Explanation:
To help manage EC2 instances as well as their usage in a better way, the user can tag the instances. The tags are metadata assigned by the user which consists of a key and a value.
One resource can have a maximum of 10 tags.
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/Using_Tags.html
NEW QUESTION 198
An account owner has created an IAM user with the name examkiller. The account owner wants to give
EC2 access of only the US West region to that IAM user. How can the owner configure this?
- A. Create an IAM user in the US West region and give access to EC2
- B. It is not possible to provide access based on the region
- C. While creating a policy provide the region as a part of the resources
- D. Create an IAM policy and define the region in the condition
Answer: D
Explanation:
The IAM policy is never region specific. If the user wants to configure the region specific setting, he needs
to provide conditions as part of the policy.
Reference: http://awspolicygen.s3.amazonaws.com/policygen.html
NEW QUESTION 199
A startup s photo-sharing site is deployed in a VPC. An ELB distributes web traffic across two subnets.
ELB session stickiness is configured to use the AWS-generated session cookie, with a session TTL of 5
minutes. The webserver Auto Scaling Group is configured as: min-size=4, max-size=4.
The startups preparing for a public launch, by running load-testing software installed on a single EC2
instance running in us-west-2a. After 60 minutes of load-testing, the webserver logs show:
Which recommendations can help ensure load-testing HTTP requests are evenly distributed across the
four webservers? Choose 2 answers
- A. Configure ELB and Auto Scaling to distribute across us-west-2a and us-west-2c.
- B. Re-configure the load-testing software to re-resolve DNS for each web request.
- C. Launch and run the load-tester EC2 instance from us-east-1 instead.
- D. Use a 3rd-party load-testing service which offers globally-distributed test clients.
- E. Configure ELB session stickiness to use the app-specific session cookie.
Answer: B,E
NEW QUESTION 200
A company has an internet-facing application that uses Web Identity Federation to obtain a temporary credential from AWS Security Token Service (AWS STS). The app then uses the token to access AWS services.
Review the following response:
Based on the response displayed what permissions are associated with the call from the application?
- A. Permissions associated with the account that owns the AWS service
- B. Permissions associated with the default role used when the AWS service was built
- C. Permission associated with the IAM principal that owns the AccessKeyID ASgeIAIOSFODNN7EXAMPLE
- D. Permissions associated with the role AROACLKWSDQRAOEXAMPLE:app1
Answer: C
NEW QUESTION 201
Can you configure an RDS Read Replica using CloudFormation templates?
- A. Yes, when you create a new CloudFormation template
- B. Yes, provided that you have root access.
- C. No, you can add the ReadReplica only when the resource is made available by CloudFormation
- D. Yes, but not for all Regions.
Answer: A
Explanation:
AWS CloudFormation gives developers and systems administrators an easy way to create and manage
collections of AWS resources. You can now set Read Replicas for your databases with RDS when you
create a new CloudFormation template.You can start using it with the sample template of
CloudFormation.
Reference:
https://s3.amazonaws.com/cloudformation-templates-us-east-1/RDS_MySQL_With_Read_Replica.template
NEW QUESTION 202
You attempt to store an object in the US-STANDARD region in Amazon S3, and receive a confirmation
that it has been successfully stored. You then immediately make another API call and attempt to read this
object. S3 tells you that the object does not exist
What could explain this behavior?
- A. US-STANDARD imposes a 1 second delay before new objects are readable.
- B. Objects in Amazon S3 do not become visible until they are replicated to a second region.
- C. You exceeded the bucket object limit, and once this limit is raised the object will be visible.
- D. US-STANDARD uses eventual consistency and it can take time for an object to be readable in a bucket
Answer: D
NEW QUESTION 203
A Developer created a Lambda function for a web application backend. When testing the Lambda function from the AWS Lambda console, the Developer can see that the function is being executed, but there is no log data being generated in Amazon CloudWatch Logs, even after several minutes.
What could cause this situation?
- A. The Lambda function is missing a target CloudWatch Log group.
- B. The execution role for the Lambda function is missing permissions to write log data to the CloudWatch Logs.
- C. The Lambda function is missing CloudWatch Logs as a source trigger to send log data.
- D. The Lambda function does not have any explicit log statements for the log data to send it to CloudWatch Logs.
Answer: B
NEW QUESTION 204
An organization is storing large files in Amazon S3, and is writing a web application to display meta-data about the files to end-users. Based on the metadata a user selects an object to download. The organization needs a mechanism to index the files and provide single-digit millisecond latency retrieval for the metadata.
What AWS service should be used to accomplish this?
- A. Amazon DynamoDB
- B. AWS Lambda
- C. Amazon RDS
- D. Amazon EC2
Answer: A
Explanation:
Explanation
Amazon DynamoDB is a fast and flexible NoSQL database service for all applications that need consistent, single-digit millisecond latency at any scale. It is a fully managed database and supports both document and key-value data models. Its flexible data model and reliable performance make it a great fit for mobile, web, gaming, ad-tech, Internet of Things (IoT), and many other applications.
References:
NEW QUESTION 205
If a message is retrieved from a queue in Amazon SQS, how long is the message inaccessible to other users by default?
- A. 30 seconds
- B. 0 seconds
- C. forever
- D. 1 hour
- E. 1 day
Answer: A
NEW QUESTION 206
Which of the following notification endpoints or clients does Amazon Simple Notification Service support?
Choose 2 answers
- A. Simple Network Management Protocol
- B. Short Message Service
- C. File Transfer Protocol
- D. CloudFront distribution
- E. Email
Answer: B,E
NEW QUESTION 207
You have written an application that uses the Elastic Load Balancing service to spread traffic to several web servers Your users complain that they are sometimes forced to login again in the middle of using your application, after they have already togged in. This is not behavior you have designed. What is a possible solution to prevent this happening?
- A. Use ElastiCache to save session state.
- B. Use instance memory to save session state.
- C. Use Glacier to save session slate.
- D. Use EBS to save session state
- E. Use instance storage to save session state.
Answer: A
NEW QUESTION 208
A company is running a custom application on a set of on-premises Linux servers that are accessed using Amazon API Gateway. AWS X-Ray tracing has been enabled on the API test stage
How can a developer enable X-Ray tracing on the on-premises servers with the LEAST amount of configuration''
- A. Capture incoming requests on-premises and configure an AWS Lambda function to pull, process, and relay relevant data to X-Ray using the PutTraceSegments API call
- B. Install and run the X-Ray daemon on the on-premises servers to capture and relay the data to the X-Ray service
- C. Capture incoming requests on-premises and configure an AWS Lambda function to pull, process, and relay relevant data to X-Ray using the PutTelemetryRecords API call.
- D. Install and run the X-Ray SDK on the on-premises servers to capture and relay the data to the X-Ray service.
Answer: B
NEW QUESTION 209
A Developer will be using the AWS CLI on a local development server to manage AWS services.
What can be done to ensure that the CLI uses the Developer's IAM permissions when making commands?
- A. Run the aws configureCLI command, and provide the Developer's IAM access key ID and secret access key.
- B. Use the Developer's IAM role when making the CLI command.
- C. Specify the Developer's IAM user name and password as parameters for each CLI command.
- D. Specify the Developer's IAM access key ID and secret access key as parameters for each CLI command.
Answer: A
Explanation:
Explanation/Reference: https://aws.amazon.com/premiumsupport/knowledge-center/iam-assume-role-cli/
NEW QUESTION 210
True or False: In DynamoDB, Scan operations are always eventually consistent.
- A. No, you can optionally request strongly consistent scan.
- B. No, scan is strongly consistent by default
- C. No, scan is like Query operation
- D. Yes
Answer: D
Explanation:
In DynamoDB, Scan operations are always eventually consistent.
http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/APISummary.html
NEW QUESTION 211
A front-end web application is using Amazon Cognito user pools to handle the user authentication flow. A developer is integrating Amazon DynamoDB into the application using the AWS SDK for JavaScript
How would the developer securely call the API without exposing the access or secret keys?
- A. Use Amazon Cognito user pool JSON Web Tokens (JWTs) to access the DynamoDB APIs.
- B. Hardcode the credentials use Amazon S3 to host the web application, and enable server-side encryption
- C. Run the web application in an Amazon EC2 instance with the instance profile configured
- D. Configure Amazon Cognito identity pools and exchange the JSON Web Token (JWT) for temporary credentials
Answer: B
NEW QUESTION 212
Which of the following programming languages have an officially supported AWS SDK? Choose 2 answers
- A. PHP
- B. Perl
- C. SQL
- D. Java
- E. Pascal
Answer: A,D
NEW QUESTION 213
What is the data model of DynamoDB?
- A. "Table", a collection of Items; "Items", with Keys and one or more Attribute; and "Attribute", with Name and Value.
- B. "Database", a collection of Tables; "Tables", with Keys and one or more Attribute; and
"Attribute", with Name and Value. - C. "Database", which is a set of "Tables", which is a set of "Items", which is a set of "Attributes".
- D. "Items", with Keys and one or more Attribute; and "Attribute", with Name and Value.
Answer: A
Explanation:
The data model of DynamoDB is:
"Table", a collection of Items;
"Items", with Keys and one or more Attribute;
"Attribute", with Name and Value.
http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataModel.html
NEW QUESTION 214
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