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QUESTION NO: 1
In the context of IAM roles for Amazon EC2, which of the following NOT true about delegating permission to make API requests?
A. You can define which accounts or AWS services can assume the role.
B. You cannot create an IAM role.
C. You can specify the role when you launch your instances.
D. You can have the application retrieve a set of temporary credentials and use them.
Answer: B
Explanation:
Amazon designed IAM roles so that your applications can securely make API requests from your instances, without requiring you to manage the security credentials that the applications use.
Instead of creating and distributing your AWS credentials, you can delegate permission to make API requests using IAM roles as follows: Create an IAM role. Define which accounts or AWS services can assume the role. Define which API actions and resources the application can use after assuming the role. Specify the role when you launch your instances. Have the application retrieve a set of temporary credentials and use them.
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/iam-roles-for-amazon-ec2.html
QUESTION NO: 2
AWS _______ supports __________ environments as one of the AWS resource types.
A. CloudFormation; CloudFormation application
B. CloudFormation; Elastic Beanstalk application
C. Elastic Beanstalk ; CloudFormation application
D. Elastic Beanstalk; Elastic Beanstalk application
Answer: B
Explanation:
AWS CloudFormation and AWS Elastic Beanstalk services are designed to complement each other.
AWS CloudFormation supports Elastic Beanstalk application environments as one of the AWS resource types.
http://aws.amazon.com/cloudformation/faqs/
QUESTION NO: 3
An organization is hosting a scalable web application using AWS. The organization has configured internet facing ELB and Auto Scaling to make the application scalable. Which of the below mentioned statements is required to be followed when the application is planning to host a web application on VPC?
A. The ELB must be in a public subnet of the VPC to face the internet traffic.
B. The ELB must not be in any subnet; instead it should face the internet directly.
C. The ELB can be in a public or a private subnet but should have the ENI which is attached to an elastic IP.
D. The ELB can be in a public or a private subnet but must have routing tables attached to divert the internet traffic to it.
Answer: A
Explanation:
The Amazon Virtual Private Cloud (Amazon VPC) allows the user to define a virtual networking environment in a private, isolated section of the Amazon Web Services (AWS) cloud. The user has complete control over the virtual networking environment. Within this virtual private cloud, the user can launch AWS resources, such as an ELB, and EC2 instances. There are two ELBs available with VPC:
internet facing and internal (private) ELB. For internet facing ELB it is required that ELB should be in a public subnet.
After the user creates the public subnet, he should ensure to associate the route table of the public subnet with the internet gateway to enable the load balancer in the subnet to connect with the internet.
http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/CreateVPCForELB.ht ml
QUESTION NO: 4
A company needs to cost-effectively persist small data records (up to 1 KiB) for up to 30 days.
The data is read rarely. When reading the data, a 5-minute delay is acceptable.
Which of the following solutions achieve this goal? (Choose two.)
A. Use an AWS Lambda function invoked via Amazon API Gateway to collect data for 5 minutes.
Write data to Amazon S3 just before the Lambda execution stops.
B. Use Amazon S3 to collect multiple records in one S3 object. Use a lifecycle configuration to move data to Amazon Glacier immediately after write. Use expedited retrievals when reading the data.
C. Write the records to Amazon Kinesis Data Firehose and configure Kinesis Data Firehose to deliver the data to Amazon S3 after 5 minutes. Set an expiration action at 30 days on the S3 bucket.
D. Write the records to an Amazon ElastiCache for Redis. Configure the Redis append-only file (AOF) persistence logs to write to Amazon S3. Recover from the log if the ElastiCache instance has failed.
E. Write the records to Amazon DynamoDB configured with a Time To Live (TTL) of 30 days. Read data using the GetItem or BatchGetItem call.
Answer: C,E
Explanation:
A: After 30 days the data should be deleted instead of storing it.
B: When an object reaches the end of its lifetime, Amazon S3 queues it for removal and removes it asynchronously. There may be a delay between the expiration date and the date at which Amazon S3 removes an object. You are not charged for storage time associated with an object that has expired.
C: Does not address the 30 days deletion.
D: https://aws.amazon.com/blogs/aws/new-manage-dynamodb-items-using-time-to-live-ttl/ E: This is for cache and not suitable for this use case.
https://docs.aws.amazon.com/AmazonS3/latest/dev/lifecycle-expire-general-considerations.html
QUESTION NO: 5
In CloudFormation, if you want to map an Amazon Elastic Block Store to an Amazon EC2 instance, ______.
A. you reference the instance IDs of the block store along with the resource properties
B. you reference the logical IDs to associate the block stores with the instance
C. you reference the physical IDs of the instance along with the resource type
D. you reference the physical IDs of both the block stores and the instance
Answer: B
Explanation:
In AWS CloudFormation, if you want to map an Amazon Elastic Block Store to an Amazon EC2 instance, you reference the logical IDs to associate the block stores with the instance.
http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/concept-resources.html
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Updated: May 28, 2022