AWS-Certified-Developer-Associate Exam
Tips to Pass AWS-Certified-Developer-Associate Exam (41 to 50)
Simulation of AWS-Certified-Developer-Associate exam fees materials and dump for Amazon certification for IT candidates, Real Success Guaranteed with Updated AWS-Certified-Developer-Associate pdf dumps vce Materials. 100% PASS AWS Certified Developer Associate exam Today!
Q41. A user is accessing an EC2 instance on the SSH port for IP 10.20.30.40. Which one is a secure way to
configure that the instance can be accessed only from this IP?
A. In the security group, open port 22 for IP 1020.30.40/0
B. In the security group, open port 22 for IP 10.20.30.40/32
C. In the security group, open port 22 for IP 10.20.30.40/24
D. In the security group, open port 22 for IP 10.20.30.40
Answer: B
Explanation:
In AWS EC2, while configuring a security group, the user needs to specify the IP address in CIDR notation. The CIDR IP range 10.20.30.40/32 says it is for a single IP 10.20.30.40. If the user specifies the IP as 10.20.30.40 only, the security group will not accept and ask it in a CIRD format.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-network-security.html
Q42. When should a user try to Force Detach an EBS volume?
A. If the volume is stuck in a detaching state
B. If the volume is not accessible from the instance
C. If the volume is not unmounted and the user still wants to detach
D. If the volume is a root volume
Answer: A
Explanation:
If an EBS volume stays in the detaching state, the user can force the detachment by clicking Force Detach. Forcing the detachment can lead to either data loss or a corrupted file system. The user should use this option only as a last resort to detach a volume from a failed instance or if he is detaching a volume with the intention of deleting it.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-detaching-volume.html
Q43. Which one of the following operations is NOT a DynamoDB operation?
A. BatchWrite|tem
B. DescribeTabIe
C. BatchGetItem
D. BatchDeIeteItem
Answer: D
Explanation:
In DynamoDB, Deleteltem deletes a single item in a table by primary key, but BatchDeIeteItem doesn’t exist.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/operationIist.htmI
Q44. A user wants to access RDS from an EC2 instance using IP addresses. Both RDS and EC2 are in the same region, but different AZs. Which of the below mentioned options help configure that the instance is accessed faster?
A. Configure the Private IP of the Instance in RDS security group
B. Security group of EC2 allowed in the RDS security group
C. Configuring the elastic IP of the instance in RDS security group
D. Configure the Public IP of the instance in RDS security group
Answer: A
Explanation:
If the user is going to specify an IP range in RDS security group, AWS recommends using the private IP address of the Amazon EC2 instance. This provides a more direct network route from the Amazon EC2 instance to the Amazon RDS DB instance, and does not incur network charges for the data sent outside of the Amazon network.
Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_WorkingWithSecurityGroups.html
Q45. A user is trying to create a policy for an IAM user from the AWS console. Which of the below mentioned options is not available to the user while configuring policy?
A. Use policy generator to create policy
B. Use custom policy to create policy
C. Use policy simulator to create policy
D. Assign No permission
Answer: C
Explanation:
When a user is trying to create a policy from the AWS console, it will have options such as create policy from templates or use a policy generator. The user can also define a custom policy or chose the option to have no permission. The policy simulator is not available in the console.
Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/IAMBestPractices.html
Q46. A user has created an application which sends data to a log file. The server hosting the log files can be unavailable due to any reason. The user wants to make it so that whenever the log server is up it should be receMng the messages. Which of the below mentioned AWS services helps achieve this functionality?
A. AWS Simple Workflow
B. AWS Simple Task Service
C. AWS Simple Notification Service
D. AWS Simple Queue Service
Answer: D
Explanation:
Amazon Simple Queue Service (SQS) is a fast, reliable, scalable, and fully managed message queuing service. SQS provides a simple and cost-effective way to decouple the components of an application. The user can use SQS to transmit any volume of data without losing messages or requiring other services to always be available. Using SQS, the application has to just send the data to SQS and SQS transmits it to the log file whenever it is available.
Reference: http://aws.amazon.com/sqs/
Q47. can be used to bootstrap both the Chef Server and Chef Client software on your EC2 instances.
A. AWS CIoudFormation
B. AWS Elastic Beanstalk
C. AWS OpsWorks
D. Amazon Glacier
Answer: A
Explanation:
AWS CIoudFormation can be used to bootstrap both the Chef Server and Chef Client software on your EC2 instances.
Reference: http://aws.amazon.com/c|oudformation/faqs/
Q48. What happens if your application performs more reads or writes than your provisioned capacity?
A. Nothing
B. requests above your provisioned capacity will be performed but you will receive 400 error codes.
C. requests above your provisioned capacity will be performed but you will receive 200 error codes.
D. requests above your provisioned capacity will be throttled and you will receive 400 error codes.
Answer: D
Explanation:
Speaking about DynamoDB, if your application performs more reads/second or writes/second than your tabIe’s provisioned throughput capacity allows, requests above your provisioned capacity will be throttled and you will receive 400 error codes.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/ProvisionedThroughputlntro.htmI
Q49. Which of the below mentioned options can be a good use case for storing content in AWS RRS?
A. Storing mission critical data Files
B. Storing infrequently used log files
C. Storing a video file which is not reproducible
D. Storing image thumbnails
Answer: D
Explanation:
AWS RRS provides the same functionality as AWS S3, but at a cheaper rate. It is ideally suited for non-mission, critical applications, such as files which can be reproduced.
Reference: http://docs.aws.amazon.com/AmazonS3/Iatest/dev/UsingRRS.htmI
Q50. A user has an S3 object in the US Standard region with the content "coIor=red". The user updates the object with the content as "coIor="white". If the user tries to read the value 1 minute after it was uploaded, what will S3 return?
A. It will return "coIor=white"
B. It will return "coIor=red"
C. It will return an error saying that the object was not found
D. It may return either "coIor=red" or "color=white" i.e. any of the value
Answer: D
Explanation:
AWS S3 follows the eventual consistent model in the US Standard Region. Once the object is updated it
may return the new value or the old value based on whether all the content is replicated across multiple servers until it becomes consistent (eventual).
Reference: http://docs.aws.amazon.com/AmazonS3/Iatest/dev/Introduction.htmI