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Q57. In DynamoDB, could you use IAM to grant access to Amazon DynamoDB resources and API actions?
A. Yes
B. Depended to the type of access
C. In DynamoDB there is no need to grant access
D. No
Answer: A
Explanation:
Amazon DynamoDB integrates with AWS Identity and Access Management (IAM). You can use AWS IAM to grant access to Amazon DynamoDB resources and API actions. To do this, you first write an AWS IAM policy, which is a document that explicitly lists the permissions you want to grant. You then attach that policy to an AWS IAM user or role.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/UsingIAMWithDDB.htmI
Q58. A user has setup Multi AZ with the MS SQL RDS instance. Which of the below mentioned functionalities can be achieved by the user?
A. High availability
B. Scalability
C. MS SQL does not support Multi AZ
D. Disaster recovery
Answer: C
Explanation:
The Multi AZ feature allows the user to achieve High Availability. MS SQL does not support Multi AZ. Reference: https://aws.amazon.com/rds/faqs/#36
Q59. In relation to Amazon Simple Workflow Service (Amazon SWF),what is an "ActMty Worker"?
A. An indMdual task undertaken by a workflow
B. The automation of a business process
C. A piece of software that implements tasks
D. All answers listed are correct
Answer: C
Explanation:
In relation to Amazon Simple Workflow Service (Amazon SWF), an actMty worker is a program that receives actMty tasks, performs them, and provides results back. Which translates to a piece of software that implements tasks.
Reference: http://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dg-develop-actMty.html
Q60. When you register an actMty in Amazon SWF, you provide the following information, except:
A. a name
B. timeout values
C. a domain
D. version
Answer: C
Explanation:
When designing an Amazon SWF workflow, you precisely define each of the required actMties. You then register each actMty with Amazon SWF as an actMty type. When you register the actMty, you provide information such as a name and version, and some timeout values based on how long you expect the actMty to take.
Reference: http://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dg-intro-to-swf.html
Q61. 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
Q62. A user is planning to host a mobile game on EC2 which sends notifications to active users on either high score or the addition of new features. The user should get this notification when he is online on his mobile device. Which of the below mentioned AWS services can help achieve this functionality?
A. AWS Simple Notification Service.
B. AWS Simple Queue Service.
C. AWS Mobile Communication Service.
D. AWS Simple Email Service.
Answer: A
Explanation:
Amazon Simple Notification Service (Amazon SNS) is a fast, filexible, and fully managed push messaging service. Amazon SNS makes it simple and cost-effective to push to mobile devices, such as iPhone, iPad, Android, Kindle Fire, and internet connected smart devices, as well as pushing to other distributed services.
Reference: http://aws.amazon.com/sns
Q63. 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/
Q64. In regards to Amazon SQS how can you secure the messages in your queues?
A. You can't
B. Amazon SQS uses either your Access Key ID or an X.509 certificate to authenticate your identity
C. Through your IAM access keys
D. Don't use root access
Answer: B
Explanation:
Authentication mechAMsms are provided to ensure that messages stored in Amazon SQS queues are secured against unauthorized access. Only the AWS account owners can access the queues they create. Amazon SQS uses proven cryptographic methods to authenticate your identity, either through the use of your Access Key ID and request signature, or through the use of an X.509 certificate.
Reference: https://aws.amazon.com/sqs/faqs/