The billing process for Amazon EC2 instances was updated as of October 2, 2017. Which of the following statements is true regarding how you pay for Amazon EC2 instances? (Choose two.)
BD
Previously, if you launched an instance for 5 minutes, you would pay for 1 hour. If you launched an instance for 45 minutes, you would also pay for 1 hour. This means that partial hours cost as much as one full hour. Pricing is per instance-hour consumed for each instance, from the time an instance is launched until it is terminated or stopped. Each partial instance-hour consumed will be billed as a full hour.
With EC2 services now billed per-second in some cases, as well as per-hour in others as of October 2, 2017, there is more to consider. Amazon AWS is still based on the concept of pay-as-you-go. You pay Amazon EC2 instances by the second for all instance types except Dedicated Host, which is still billed per instance-hour. You are billed per second when using Linux operating systems with no separate hourly charge, and billed per hour when using Windows operating systems.
Reference:
http://aws.amazon.com/ec2/pricing/
When an instance terminates, Amazon EC2 uses the value of the _____ attribute for each attached Amazon EBS volume to determine whether to preserve or delete the volume.
B
When an instance terminates, Amazon EC2 uses the value of the DeleteOnTermination attribute for each attached Amazon EBS volume to determine whether to preserve or delete the volume.
Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/terminating-instances.html
What does Amazon RDS perform?
C
Amazon RDS manages the work involved in setting up a relational database: from provisioning the infrastructure capacity you request to installing the database software.
Reference:
http://aws.amazon.com/rds/faqs/#1
What was the recommended use case for S3 Reduced Redundancy storage before its deprecation was planned?
B
Explanation -
Reduced Redundancy Storage (RRS) was introduced in order to reduce storage costs. When first developed, you could use reduced redundancy storage for noncritical, reproducible data at lower levels of redundancy than Amazon S3 provides with standard storage. Now Standard is a more af-fordable from a cost perspective, because Amazon is deprecating RRS and has changed the pricing structure.
Reference:
http://docs.aws.amazon.com/AmazonS3/latest/dev/UsingRRS.html
____________ is a fast, flexible, fully managed pub/sub messaging service.
D
Amazon Simple Notification Service (Amazon SNS) is a fast, flexible, fully managed push messag-ing service. Amazon SNS makes it simple and cost-effective to push to mobile devices such as iPh-one, iPad, Android, Kindle Fire, and internet connected smart devices, as well as pushing to other distributed services.
Reference:
http://aws.amazon.com/sns/?nc1=h_l2_as
Does AWS offer any web-based graphic user interface to access and manage EC2 instances?
C
You can access and manage Amazon Web Services through a simple and intuitive web-based user interface known as the AWS Management Console.
Reference:
http://aws.amazon.com/console/
What is the maximum size of an object in Amazon S3?
C
5TB is the maximum size of an object in Amazon S3.
The total volume of data and number of objects you can store are unlimited. Individual Amazon S3 objects can range in size from a minimum of 0 bytes to a maximum of 5 terabytes. The largest object that can be uploaded in a single PUT is 5 gigabytes. For objects larger than 100 megabytes, custom-ers should consider using the Multipart Upload capability.
Reference:
http://aws.amazon.com/s3/faqs/#How_much_data_can_I_store
Amazon EBS provides the ability to create backups of any Amazon EC2 volume into what is known as _____.
A
Amazon allows you to backup the data stored in your EBS volumes with snapshots that can later be used to create a new EBS volume.
Reference:
http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/Storage.html
Which of the following size ranges is true of Individual Amazon S3 objects?
B
The total volume of data and number of objects you can store are unlimited. Individual Amazon S3 objects can range in size from 0 bytes to 5 terabytes.
Reference:
https://aws.amazon.com/s3/faqs/
What is a security group in Amazon AWS?
C
A security group acts as a virtual firewall that controls the traffic for one or more instances. When you launch an instance, you associate one or more security groups with the instance. You add rules to each security group that allow traffic to or from its associated instances. You can modify the rules for a security group at any time; the new rules are automatically applied to all instances that are associated with the security group. When we decide whether to allow traffic to reach an instance, we evaluate all the rules from all the security groups that are associated with the instance.
Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-network-security.html
