What does RRS stand, in the context of S3 services?
D
In Amazon S3, RRS stands for Reduced Redundancy Storage. Reduced redundancy storage stores objects on multiple devices across multiple facilities, providing 400 times the durability of a typical disk drive, but it does not replicate objects as many times as Amazon S3 standard storage. In addi-tion, reduced redundancy storage is designed to sustain the loss of data in a single facility.
Reference:
http://docs.aws.amazon.com/AmazonS3/latest/dev/UsingRRS.html
Which choice is a storage option supported by Amazon EC2?
B
Amazon EC2 supports the following storage options:
Amazon Elastic Block Store (Amazon EBS)
Amazon EC2 Instance Store -
Amazon Simple Storage Service (Amazon S3)
Reference:
http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/Storage.html
Amazon EC2 provides virtual computing environments known as _____.
A
Amazon EC2 provides virtual computing environments known as instances. When you launch an instance, the instance type that you specify determines the hardware of the host computer used for your instance. Each instance type offers different compute, memory, and storage capabilities and are grouped in instance families based on these capabilities. Select an instance type based on the re-quirements of the application or software that you plan to run on your instance.
Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/concepts.html
Which of the following services is offered by CloudWatch?
C
AWS CloudWatch supports monitoring of the AWS estimated usage charges. You create an Ama-zon CloudWatch alarm that will monitor your estimated Amazon
Web Services (AWS) charges. When you enable the monitoring of estimated charges for your AWS account, the estimated charges are calculated and sent several times daily to CloudWatch as metric data.
Reference:
http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/monitor_estimated_charges_with_cloudwatch.html
The fastest way to load 300 TB of data to AWS is _____.
B
Even with high-speed Internet connections, it can take months to transfer large amounts of data.
For example, 100 terabytes of data will take more than 100 days to transfer over a dedicated 100 Mbps connection. That same transfer can be accomplished in less than one day, plus shipping time, using two Snowball appliances.
Reference:
http://aws.amazon.com/importexport/
AMIs can be ______________.
D
After you create an AMI, you can keep it private so that only you can use it, or you can share it with a specified list of AWS accounts. You can also make your custom AMI public so that the communi-ty can use it. Building a safe, secure, usable AMI for public consumption is a fairly straightforward process, if you follow a few simple guidelines.
Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AMIs.html
Can you configure multiple Load Balancers with a single Auto Scaling group?
C
Yes, you can configure more than one load balancer with an autoscaling group. Auto Scaling inte-grates with Elastic Load Balancing to enable you to attach one or more load balancers to an existing Auto Scaling group. After you attach the load balancer, it automatically registers the instances in the group and distributes incoming traffic across the instances.
Reference:
http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/AS_Concepts.html
A user is sending custom data metrics to CloudWatch. What is the allowed time stamp granularity for each data point published for the custom metric?
B
The user is allowed to send data up to one-thousandth of a second. CloudWatch aggregates the data by each minute and generates a metric for that.
Reference:
http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/publishingMetrics.html
When rebalancing, Auto Scaling launches new instances before terminating the old ones, so that re-balancing does not compromise the performance or availability of your application. Because Auto Scaling attempts to launch new instances before terminating the old ones, being at or near the speci-fied maximum capacity could impede or completely halt rebalancing activities. What does Auto Scaling do in order to avoid this problem?
C
When rebalancing, Auto Scaling launches new instances before terminating the old ones, so that re-balancing does not compromise the performance or availability of your application. Because Auto Scaling attempts to launch new instances before terminating the old ones, being at or near the speci-fied maximum capacity could impede or completely halt rebalancing activities. To avoid this prob-lem, the system can temporarily exceed the specified maximum capacity of a group by a 10 percent margin (or by a 1-instance margin, whichever is greater) during a rebalancing activity.
Reference:
http://docs.aws.amazon.com/autoscaling/latest/userguide/auto-scaling-benefits.html
What does the AWS Storage Gateway provide?
C
AWS Storage Gateway connects an on-premises software appliance with cloud-based storage to provide seamless integration with data security features between your on-premises IT environment and the Amazon Web Services (AWS) storage infrastructure.
Reference:
http://docs.aws.amazon.com/storagegateway/latest/userguide/WhatIsStorageGateway.html
