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To be eligible for the AWS Certified Developer - Associate certification exam, you should have at least one year of experience developing AWS applications using AWS services, and be proficient in at least one programming language, such as Python, Java, or Ruby. AWS-Developer Exam consists of 65 multiple-choice and multiple-response questions, and you have 130 minutes to complete it. AWS-Developer exam is available in English, Japanese, Korean, and Simplified Chinese.

The AWS Certified Developer-Associate Certification Exam is a highly sought-after certification in the field of cloud computing. AWS Certified Developer Associate Exam (DVA-C02) certification is specifically designed for developers who have experience working with Amazon Web Services (AWS) and are looking to validate their skills and knowledge in this area. It is an entry-level certification that is intended for individuals who are just getting started with AWS or who have some basic knowledge of the platform.

Amazon AWS Certified Developer Associate Exam (DVA-C02) Sample Questions (Q164-Q169):

NEW QUESTION # 164
A Developer is working on an application that tracks hundreds of millions of product reviews in an Amazon DynamoDB table. The records include the data elements shown in the table:

Which field, when used as the partition key, would result in the MOST consistent performance using DynamoDB?

A. starRating
B. comment
C. reviewID
D. productID

Answer: D

Explanation:
Explanation
Refer AWS documentation - DynamoDB Design partition key
The partition key portion of a table's primary key determines the logical partitions in which a table's data is stored. This in turn affects the underlying physical partitions. Provisioned I/O capacity for the table is divided evenly among these physical partitions. Therefore a partition key design that doesn't distribute I/O requests evenly can create "hot" partitions that result in throttling and use your provisioned I/O capacity inefficiently.
The optimal usage of a table's provisioned throughput depends not only on the workload patterns of individual items, but also on the partition-key design. This doesn't mean that you must access all partition key values to achieve an efficient throughput level, or even that the percentage of accessed partition key values must be high. It does mean that the more distinct partition key values that your workload accesses, the more those requests will be spread across the partitioned space. In general, you will use your provisioned throughput more efficiently as the ratio of partition key values accessed to the total number of partition key values increases.

NEW QUESTION # 165
A company has a production environment running on Amazon RDS for SQL Server with an in-house web application as the front end. During the last application maintenance window, new functionality was added to the web application to enhance the reporting capabilities for management. Since the update, the application is slow to respond to some reporting queries.
How should the company identify the source of the problem?

A. Use AWS X-Ray deployed with Amazon RDS to track query system traces.
B. Install and configure Amazon CloudWatch Application Insights for Microsoft .NET and Microsoft SQL Server. Use a CloudWatch dashboard to identify the root cause.
C. Enable RDS Performance Insights and determine which query is creating the problem. Request changes to the query to address the problem.
D. Create a support request and work with AWS Support to identify the source of the issue.

Answer: C

NEW QUESTION # 166
Can a user get a notification of each instance start / terminate configured with Auto Scaling?

A. Yes, if configured with the Launch Config
B. No
C. Yes, if configured with the Auto Scaling group
D. Yes, always

Answer: C

Explanation:
The user can get notifications using SNS if he has configured the notifications while creating the Auto Scaling group.
http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/GettingStartedTutorial.html

NEW QUESTION # 167
The Security Engineer is managing a traditional three-tier web application that is running on Amazon EC2 instances. The application has become the target of increasing numbers of malicious attacks from the Internet.
What steps should the Security Engineer take to check for known vulnerabilities and limit the attack surface? (Choose two.)

A. Use AWS Key Management Services to encrypt all the traffic between the client and application servers.
B. Use AWS Certificate Manager to encrypt all traffic between the client and application servers.
C. Use Elastic Load Balancing to offload Secure Sockets Layer encryption.
D. Use Amazon Inspector to periodically scan the backend instances.
E. Review the application security groups to ensure that only the necessary ports are open.

Answer: D,E

NEW QUESTION # 168
EC2 instances are launched from Amazon Machine images (AMIS).
A given public AMI can:

A. only be used to launch EC2 instances in the same AWS availability zone as the AMI is stored
B. only be used to launch EC2 instances in the same AWS region as the AMI is stored.
C. be used to launch EC2 Instances in any AWS region.
D. only be used to launch EC2 instances in the same country as the AMI is stored.

Answer: B

NEW QUESTION # 169
......

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