AWS Certified Solutions Architect - Associate题库

Question: 1

You are trying to launch an EC2 instance, however the instance seems to go into a terminated

status immediately. What would probably not be a reason that this is happening?

A. The AMI is missing a required part.

B. The snapshot is corrupt.

Explanation:

Amazon EC2 provides a virtual computing environments, known as an instance.

After you launch an instance, AWS recommends that you check its status to confirm that it goes

from the pending status to the running status, the not terminated status.

The following are a few reasons why an Amazon EBS-backed instance might immediately

terminate:

You've reached your volume limit.

The AMI is missing a required part.

The snapshot is corrupt.

You have set up an Auto Scaling group. The cool down period for the Auto Scaling group is 7

minutes. The first instance is launched after 3 minutes, while the second instance is launched

after 4 minutes. How many minutes after the first instance is launched will Auto Scaling accept

another scaling activity request?

A. 11 minutes

B. 7 minutes

C. 10 minutes

Answer: A

Explanation:

If an Auto Scaling group is launching more than one instance, the cool down period for each

instance starts after that instance is launched. The group remains locked until the last instance

that was launched has completed its cool down period. In this case the cool down period for the

first instance starts after 3 minutes and finishes at the 10th minute (3+7 cool down), while for

container instances on which you can place tasks?

A. A cluster

B. A container instance

C. A container

D. A task definition

been registered into a cluster.

definitions.

A Scheduler is the method used for placing tasks on container instances.

A Service is an Amazon ECS service that allows you to run and maintain a specified number of

instances of a task definition simultaneously.

A Task is an instantiation of a task definition that is running on a container instance.

A Container is a Linux container that was created as part of a task.

Reference: http://docs.aws.amazon.com/AmazonECS/latest/developerguide/Welcome.html

In the context of AWS support, why must an EC2 instance be unreachable for 20 minutes rather

than allowing customers to open tickets immediately?

A. Because most reachability issues are resolved by automated processes in less than 20

minutes

B. Because all EC2 instances are unreachable for 20 minutes every day when AWS does routine

maintenance

Explanation:

reachability issues are resolved by automated processes in less than 20 minutes and will not

require any action on the part of the customer. If the instance is still unreachable after this time

frame has passed, then you should open a case with support.

Reference: https://aws.amazon.com/premiumsupport/faqs/

Question: 5

Can a user get a notification of each instance start / terminate configured with Auto Scaling?

D. No

Answer: C

Explanation:

The user can get notifications using SNS if he has configured the notifications while creating the

Auto Scaling group.

Reference:

http://docs.aws.amazon.com/AutoScaling/latest/DeveloperGuide/GettingStartedTutorial.htm

known as _____.

A. snapshots

B. images

C. instance backups

that can later be used to create a new EBS volume.

Reference: http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/Storage.html

Question: 7

To specify a resource in a policy statement, in Amazon EC2, can you use its Amazon Resource

Name (ARN)?

A. Yes, you can.

Answer: A

Explanation:

created or modified by the action. To specify a resource in the statement, you need to use its

Amazon Resource Name (ARN).

Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-ug.pdf

Question: 8

Redshift. Which of the following would be a reasonable response to his request?

A. It has high performance at scale as data and query complexity grows.

B. It prevents reporting and analytic processing from interfering with the performance of OLTP

workloads.

C. You don't have the administrative burden of running your own data warehouse and dealing

with setup, durability, monitoring, scaling, and patching.

Amazon Redshift delivers fast query performance by using columnar storage technology to

improve I/O efficiency and parallelizing queries across multiple nodes. Redshift uses standard

PostgreSQL JDBC and ODBC drivers, allowing you to use a wide range of familiar SQL clients.

Data load speed scales linearly with cluster size, with integrations to Amazon S3, Amazon

DynamoDB, Amazon Elastic MapReduce, Amazon Kinesis or any SSH-enabled host.

AWS recommends Amazon Redshift for customers who have a combination of needs, such as:

. High performance at scale as data and query complexity grows

. Desire to prevent reporting and analytic processing from interfering with the performance of

OLTP workloads

. Large volumes of structured data to persist and query using standard SQL and existing BI tools

One of the criteria for a new deployment is that the customer wants to use AWS Storage Gateway.

However you are not sure whether you should use gateway-cached volumes or gateway-stored

volumes or even what the differences are. Which statement below best describes those

differences?

A. Gateway-cached lets you store your data in Amazon Simple Storage Service (Amazon S3) and

configure your on-premises gateway to store all your data locally and then asynchronously back

up point-in-time snapshots of this data to Amazon S3.