New DVA-C01 dumps contains 635 exam questions and answers that cover all objectives of the DVA-C01 AWS Certified Developer – Associate exam in-depth, so you can prepare for any question on the DVA-C01 AWS Certified Developer – Associate exam.
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Read the latest DVA-C01 Dumps exam questions and answers online (Q14-26):
|Number of exam questions||Exam name||From||Release time||PDF Download||Previous issue|
|13||AWS Certified Developer – Associate (DVA-C01)||Lead4Pass||Oct 31, 2022||DVA-C01 PDF Free||DVA-C01 Exam questions and answers 1-13|
NEW QUESTION 14:
A developer is creating a role to access Amazon S3 buckets. To create the role, the developer uses the AWS CLI create-role command.
Which policy should be added to allow the Amazon EC2 service to assume the role?
A. Managed policy
B. Trust policy
C. Inline policy
D. Service control policy (SCP)
Correct Answer: B
NEW QUESTION 15:
A Developer is building a serverless application using AWS Lambda and must create a REST API using an HTTP GET method.
What needs to be defined to meet this requirement? (Choose two.)
A. A Lambda@Edge function
B. An Amazon API Gateway with a Lambda function
C. An exposed GET method in an Amazon API Gateway
D. An exposed GET method in the Lambda function
E. An exposed GET method in Amazon Route 53
Correct Answer: BC
NEW QUESTION 16:
A company is using Amazon API Gateway to manage its public-facing API. The CISO requires that the APIs be used by test account users only.
What is the MOST secure way to restrict API access to users of this particular AWS account?
A. Client-side SSL certificates for authentication
B. API Gateway resource policies
C. Cross-origin resource sharing (CORS)
D. Usage plans
Correct Answer: B
NEW QUESTION 17:
A developer is building an application integrating an Amazon API Gateway with an AWS Lambda function. When calling the API, the developer receives the following error.
Wed Nov 03 01:13:00 UTC 2017 :
Method completed with status:
502 What should the developer do to resolve the error?
A. Change the HTTP endpoint of the API to an HTTPS endpoint.
B. Change the format of the payload sent to the API Gateway.
C. Change the format of the Lambda function response to the API call
D. Change the authorization header in the API call to access the Lambda function
Correct Answer: C
NEW QUESTION 18:
A developer is working on a serverless application that needs lo process any changes to an Amazon DynamoDB table with an AWS Lambda function
How should the developer configure the Lambda function to detect changes to the DynamoDB tabled
A. Create an Amazon Kinesis data stream, and attach it to the DynamoDB table Create a trigger to connect the data stream to the Lambda function
B. Create an Amazon EventBridge (Amazon CloudWatch Events) rule to invoke the Lambda function on a regular schedule Connect to the DynamoDB table from the Lambda function to detect changes
C. Enable DynamoDB Streams on the table Create a trigger to connect the DynamoDB stream to the Lambda function
D. Create an Amazon Kinesis Data Firehose delivery stream, and attach it to the DynamoDB table Configure the delivery stream destination as the Lambda function
Correct Answer: C
NEW QUESTION 19:
A developer is writing an application that will process data delivered into an Amazon S3 bucket. The data is delivered approximately 10 times a day, and the developer expects the data will be processed in less than 1 minute, on average.
How can the developer deploy and invoke the application with the lowest cost and lowest latency?
A. Deploy the application as an AWS Lambda function and invoke it with an Amazon CloudWatch alarm triggered by an S3 object upload.
B. Deploy the application as an AWS Lambda function and invoke it with S3 event notification.
C. Deploy the application as an AWS Lambda function and invoke it with an Amazon CloudWatch scheduled event.
D. Deploy the application onto an Amazon EC2 instance and have it poll the S3 bucket for new objects.
Correct Answer: B
NEW QUESTION 20:
A company runs its APIs using Amazon API Gateway in front of AWS Lambda functions. The company wants to add logging at the API level. Each API must have production and development environments. The developer wants to enable different logging levels in both environments.
How can these requirements be met?
A. Set up a stage for each environment. In each stage, point to different Lambda functions that implement the logging logic in the code. Access the logs in Amazon CloudWatch Logs.
B. Set up a stage for each environment. In each stage, define a different logging level according to the logging requirements. Access the logs in Amazon CloudWatch Logs.
C. Set up a stage and use the same Lambda functions. In Amazon CloudWatch Logs, set up a filter based on the log level according to the logging requirements.
D. Set up a stage for each environment. In each stage, define a variable for the log level. Set the value according to the logging requirements.
Correct Answer: B
NEW QUESTION 21:
A developer has built an application using Amazon Cognito for authentication and authorization. After a user is successfully logged in to the application, the application creates a user record in an Amazon DynamoDB table.
What is the correct flow to authenticate the user and create a record in the DynamoDB table?
A. Authenticate and get a token from an Amazon Cognito user pool. Use the token to access DynamoDB.
B. Authenticate and get a token from an Amazon Cognito identity pool. Use the token to access DynamoDB.
C. Authenticate and get a token from an Amazon Cognito user pool. Exchange the token for AWS credentials with an Amazon Cognito identity pool. Use the credentials to access DynamoDB.
D. Authenticate and get a token from an Amazon Cognito identity pool. Exchange the token for AWS credentials with an Amazon Cognito user pool. Use the credentials to access DynamoDB.
Correct Answer: C
“You can enable your users to sign in with a user pool, and then access AWS services using an identity pool. After a successful authentication, your web or mobile app will receive user pool tokens from Amazon Cognito. You can use those tokens to retrieve AWS credentials that allow your app to access other AWS services” Cognito User pool is for authentication and the Identity pool is for authorization.
NEW QUESTION 22:
A large e-commerce site is being designed to deliver static objects from Amazon S3. The Amazon S3 bucket wills serve more than 300 GET requests per second. What should be done to optimize performance? (Select TWO.)
A. Integrate Amazon CloudFront with Amazon S3.
B. Enable Amazon S3 cross-region replication.
C. Delete expired Amazon S3 server log files.
D. Configure Amazon S3 lifecycle rules.
E. Randomize Amazon S3 key name prefixes.
Correct Answer: AE
CloudWatch definitely. Random key prefixes are still a valid method of improving performance by using parallel reads. It doesn\’t mentions prefix hashing. For instance prefixes, 1/,2/,3/,4,5/ could provide 5 x parallel streams for S3 as opposed to all objects being in a single folder/prefix e.g. dev/ https:// docs.aws.amazon.com/AmazonS3/latest/dev/optimizing-performance.html “There are no limits to the number of prefixes in a bucket.
You can increase your read or write performance by parallelizing reads. For example, if you create 10 prefixes in an Amazon S3 bucket to parallelize reads, you could scale your read performance to 55,000 read requests per second.” The assumption that prefixes don’t matter is incorrect, as described by “Amazon S3 performance guidelines recommended randomizing prefix naming with hashed characters to optimize performance for frequent data retrievals. You no longer have to randomize prefix naming for performance, and can use sequential date-based naming for your prefixes”
NEW QUESTION 23:
A Development team wants to instrument their code to provide more detailed information to AWS X-Ray than simple outgoing and incoming requests. This will generate large amounts of data, so the Development team wants to implement indexing so they can filter the data.
What should the Development team do to achieve this?
A. Add annotations to the segmented document and the code
B. Add metadata to the segmented document and the code
C. Configure the necessary X-Ray environment variables
D. Install required plugins for the appropriate AWS SDK
Correct Answer: A
NEW QUESTION 24:
A photo-sharing website gets millions of new images every week The images are stored in Amazon S3 under a formatted date prefix A developer wants to move images to a few S3 buckets for analysis and further processing Images are not required to be moved in real-time What is the MOST efficient method for performing this task?
A. Use S3 PutObject events to Invoke AWS Lambda Then Lambda will copy the files to the other objects
B. Create an AWS Lambda function that will pull a day of Images from the origin bucket and copy them to the other buckets.
C. Use S3 Batch Operations to create jobs for images to be copied to each Individual bucket.
D. Use Amazon EC2 to batch-pull images from multiple days and copy them to the other buckets
Correct Answer: D
NEW QUESTION 25:
A 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 causing the duplicate entries?
A. The S3 bucket name was specified incorrectly.
B. The Lambda function failed, and the Lambda service retired the invocation with a delay.
C. There was an S3 outage, which caused duplicate entries of the sale log file.
D. The application stopped intermittently and then resumed.
Correct Answer: B
NEW QUESTION 26:
An AWS Lambda function must read data from an Amazon RDS MySQL database in a VPC and also reach a public endpoint over the internet to get additional data.
Which steps must be taken to allow the function to access both the RDS resource and the public endpoint? (Select TWO.)
A. Modify the default configuration for the Lambda function to associate it with an Amazon VPC private subnet.
B. Modify the default network access control list to allow outbound traffic.
C. Add a NAT Gateway to the VPC.
D. Modify the default configuration of the Lambda function to associate it with a VPC public subnet.
E. Add an environmental variable to the Lambda function to allow outbound internet access.
Correct Answer: AC
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