Which of the following are the customer's responsibilities, according to the AWS Shared Responsibility Security Model? (Choose two.)
AB
Reference:
https://cloudacademy.com/blog/aws-shared-responsibility-model-security/
Elastic Load Balancing automatically distributes incoming traffic across multiple _____ instances.
A
AWS provides the Elastic Load Balancing service to automatically distribute the incoming traffic across multiple Amazon Elastic Compute Cloud (Amazon EC2) instances. The load balancer serves as a single point of contact for clients, which increases the availability of your application.
You can add and remove instances from your load balancer as your needs change, without disrupt-ing the overall flow of requests to your application.
Reference:
http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/SvcIntro.html
___________ is a task coordination and state management service for cloud applications.
A
Amazon Simple Workflow (Amazon SWF) is a task coordination and state management service for cloud applications. With Amazon SWF, you can stop writing complex glue-code and state machin-ery and invest more in the business logic that makes your applications unique.
Reference:
http://aws.amazon.com/swf/
A block device is a storage device that moves data in sequences. How many types of block devices does Amazon EC2 support?
A
A block device is a storage device that moves data in sequences of bytes or bits (blocks). These de-vices support random access and generally use buffered I/O.
Examples include hard disks, CD-ROM drives, and flash drives. A block device can be physically attached to a computer or accessed remotely as if it were physically attached to the computer. Amazon EC2 supports two types of block devices:
Amazon EC2 supports two types of block devices.
Instance store volumes (virtual devices whose underlying hardware is physically attached to the host computer for the instance)
EBS volumes (remote storage devices)
The SSD, HDD and Magnetic choices are all options for the type of storage offered via EBS vol-umes. They are not types of block devices.
Reference:
http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/block-device-mapping-concepts.html
Do Amazon EBS volumes persist independently from the running life of an Amazon EC2 instance?
D
An Amazon EBS volume behaves like a raw, unformatted, external block device that you can attach to a single instance. The volume persists independently from the running life of an Amazon EC2instance.
Reference:
http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/Storage.html
Is it possible to access S3 objects from the Internet?
B
You must grant read permission on the specific objects to make them publicly accessible so that your users can view them on your website. You make objects publicly readable by using either the object ACL or by writing a bucket policy.
Reference:
https://aws.amazon.com/articles/5050
_________ is a fast, reliable, scalable, fully managed message queuing service.
C
Amazon Simple Queue Service (SQS) is a fast, reliable, scalable, fully managed message queuing service. SQS makes it simple and cost-effective to decouple the components of a cloud application.
Decoupling the components of an application -you have a queue of work items and want to track the successful completion of each item independently. Amazon
SQS tracks the ACK/FAIL results, so the application does not have to maintain a persistent checkpoint or cursor. After a configured visibility timeout, Amazon SQS deletes acknowledged messages and redelivers failed messages.
Configuring individual message delay -you have a job queue and you need to schedule individual jobs with a delay. With standard queues, you can configure individual messages to have a delay of up to 15 minutes.
Dynamically increasing concurrency or throughput at read time -you have a work queue and want to add more consumers until the backlog is cleared. Amazon
SQS requires no pre-provisioning.
Scaling transparently -your buffer requests and the load changes as a result of occasional load spikes or the natural growth of your business. Because Amazon
SQS can process each buffered request independently, Amazon SQS can scale transparently to handle the load without any provisioning instructions from you.
Reference:
http://aws.amazon.com/sqs/
What does Amazon Route53 provide?
B
Amazon Route53 provides a scalable Domain Name System. Amazon Route 53 is a highly available and scalable cloud Domain Name System (DNS) web service. It is designed to give developers and businesses an extremely reliable and cost effective way to route end users to Internet applications by translating names like www.example.com into the numeric IP addresses like 192.0.2.1 that computers use to connect to each other. Amazon Route 53 is fully compliant with
IPv6 as well.
Reference:
http://aws.amazon.com/route53/
What does Amazon VPC stand for?
A
Amazon VPC stands for Amazon Virtual Private Cloud (Amazon VPC). Amazon VPC lets you provision a logically isolated section of the Amazon Web Services
(AWS) cloud where you can launch AWS resources in a virtual network that you define. You have complete control over your virtual networking environment, including selection of your own IP address range, creation of sub-nets, and configuration of route tables and network gateways. You can also create a hardware
Vir-tual Private Network (VPN) connection between your corporate datacenter and your VPC and lev-erage the AWS cloud as an extension of your corporate datacenter.
Reference:
http://aws.amazon.com/vpc/faqs/#G1
Which of the following does Amazon S3 provide?
B
Amazon S3 provides Scalable Storage in the Cloud. Amazon Simple Storage Service (Amazon S3) is object storage with a simple web service interface to store and retrieve any amount of data from anywhere on the web. It is designed to deliver 99.999999999% durability, and scale past trillions of objects worldwide.
Reference:
https://aws.amazon.com/s3/
