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What Topics Are Covered in AWS DVA-C01 Certification Exam?
- AWS services development - the third section can be considered the most important as it has the biggest weight in the total number of questions, which is 30%. Here, candidates will learn how to write codes with the help of serverless applications. Also, they will become familiar with the strategies of translating functional requirements into different apps design. Another essential element included in this part handles application design implementation and shows candidates how to put it into application code. Last but not least, future examinees will learn how to write code that will interact correctly with AWS services and make use of APIs, AWS CLI, or SDKs.
This exam is split into five distinct domains. Each of them covers a specific area of AWS core services and helps the applicant get the necessary knowledge to succeed in the official test. Let's take them one by one:
- Refactoring - within the refactoring topic, candidates will learn two major concepts. They will start by understanding how to optimize apps by making the best use of AWS features and services. Practically, this section shows the candidate the importance of each feature and opens his/her mind to handle it properly to improve business processes. The second subtopic will treat migration issues. Thus, candidates will learn more about how to move existing app codes to AWS platforms in a fast and effective way. Overall, only 10% of all exam questions are dedicated to this domain.
- Security - this topic covers 26% of the questions and it's the second most important topic in the overall structure of this exam. It focuses on ensuring the highest level of security. Therefore, candidates will learn how to develop authenticated calls with the help of AWS services. Also, they will learn about encryption and how to implement its principles in using AWS features. Finally, the third subsection is dedicated to application authentication and authorization and how they can be achieved by using AWS services.
- Troubleshooting and monitoring - last but not least, the troubleshooting and monitoring topic takes up 12% of the exam content and is essential as candidates need to know how to solve different situations that they might encounter while using AWS services and features. For example, they will learn about how to monitor processes by writing different codes that serve this purpose. Also, they will understand how to develop a clear and efficient route cause analysis and find immediately the faults that made processes not work properly. This section will take them through different trial and error examples and share the best solutions identified by using AWS features and services.
Conclusion
The IT professionals who pass DVA-C01 exam can work in big firms as developers. They will also get a decent salary after achieving the AWS Certified Developer – Associate certification. Enroll in the training courses offered by AWS and grab the study guides from Amazon mentioned above to have the best guidance. You might need to put extra effort into the preparation for this test, meanwhile, it will lead you to success. Get ready for the exam with such valuable resources and advance your career!
The Amazon DVA-C01 exam covers a wide range of domains, which are enumerated below:
- Development with AWS Service – 30%
This subject area is dedicated to measuring the professionals’ skills in implementing application design into an application code, writing code for serverless applications as well as code that interacts with the AWS services using AWS CLI APIs, and translating the functional requirements into application designs.
- Deployment – 22%
The first exam part evaluates the test takers’ expertise in deploying the written code in Amazon Webs Services using CD/CI pipelines patterns as well as deploying serverless applications. It is also important that the candidates possess knowledge of how to get ready the deployment package applications so that they can be deployed into AWS and how to deploy applications using Elean Beanstalk.
- Monitoring and Troubleshooting – 12%
The last objective is all about the individuals’ skills required to identify faults as well as how to monitor them. The examinees need to have the expertise in performing root cause analysis on all the faults found during production or testing as well as writing code to get it monitored.
- Refactoring – 10%
This topic is focused on the students’ knowledge of AWS services as well as the features that are included in it. They also have to demonstrate their competence in optimizing the applications for using the best features of AWS services and migrating the existing application code to run on AWS.
- Security – 26%
This domain validates the applicants’ understanding of encryption and authentication methods. They have to be good at implementing encryption using AWS services, implementing applications for authentication authorization, as well as making authenticated calls to Amazon Web Services.
Amazon AWS Certified Developer - Associate Sample Questions (Q54-Q59):
NEW QUESTION # 54
AWS Elastic Beanstalk will change the health status of a web server environment tier to gray color when:
- A. Your application's health status is unknown because status is reported when the application is not in the ready state.
- B. AWS Elastic Beanstalk detects other problems with the environment that are known to make the application unavailable
- C. Your application hasn't responded to the application health check URL within the last one hour.
- D. Your application hasn't responded to the application health check URL within the last five minutes.
Answer: A
Explanation:
AWS Elastic Beanstalk will change the health status of a web server environment tier to gray color when your application's health status is unknown (because status is reported when the application is not in the ready state).
Reference: http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/using-features.healthstatus.html
NEW QUESTION # 55
A Developer has published an update to an application that is served to a global user base using Amazon CloudFront. After deploying the application, users are not able to see the updated changes.
How can the Developer resolve this issue?
- A. Disable forwarding of query strings and request headers from the CloudFront distribution configuration.
- B. Invalidate all the application objects from the edge caches.
- C. Disable the CloudFront distribution and enable it again to update all the edge locations.
- D. Remove the origin from the CloudFront configuration and add it again.
Answer: B
Explanation:
At a cost AWS can invalidate the CloudFront caches to clear the old data. Better solution would be to reduce the TTL to 0 on CloudFront.
NEW QUESTION # 56
Which header received at the EC2 instance identifies the port used by the client while requesting ELB?
- A. X-Forwarded-Port
- B. X-Requested-Port
- C. X-Requested-Proto
- D. X-Forwarded-Proto
Answer: A
Explanation:
The X-Forwarded-Port request header helps the user identify the port used by the client while sending a request to ELB.
Reference:
http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/TerminologyandKeyConcepts.
html
NEW QUESTION # 57
An application has hundreds of users. Each user may use multiple devices to access the application. The Developer wants to assign unique identifiers to these users regardless of the device they use. Which of the following methods should be used to obtain unique identifiers?
- A. Create a user table in Amazon DynamoDB as key-value pairs of users and their devices. Use these keys as unique identifiers.
- B. Assign IAM users and roles to the users. Use the unique IAM resource ID as the unique identifier.
- C. Use IAM-generated access key IDs for the users as the unique identifier, but do not store secret keys.
- D. Implement developer-authenticated identities by using Amazon Cognito, and get credentials for these identities.
Answer: D
NEW QUESTION # 58
An application is using Amazon DynamoDB as its data store, and should be able to read 100 items per second as strongly consistent reads. Each item is 5 KB in size.
To what value should the table's provisioned read throughput be set?
- A. 200 read capacity units
- B. 50 read capacity units
- C. 100 read capacity units
- D. 500 read capacity unitsc
Answer: A
NEW QUESTION # 59
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