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Q1. In regard to DynamoDB, what is the Global secondary index?
A. An index with a hash and range key that can be different from those on the table.
B. An index that has the same range key as the table, but a different hash key
C. An index that has the same hash key and range key as the table
D. An index that has the same hash key as the table, but a different range key
Answer: A
Explanation:
Global secondary index - an index with a hash and range key that can be different from those on the table.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataModel.html
Q2. True or False: In DynamoDB, Scan operations are always eventually consistent.
A. No, scan is like Query operation
B. Yes
C. No, scan is strongly consistent by default
D. No, you can optionally request strongly consistent scan.
Answer: B
Explanation:
In DynamoDB, Scan operations are always eventually consistent.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/APISummary.htmI
Q3. In relation to Amazon Simple Workflow Service (Amazon SWF),what is an "ActMty Worker"?
A. An indMdual task undertaken by a workflow
B. The automation of a business process
C. A piece of software that implements tasks
D. All answers listed are correct
Answer: C
Explanation:
In relation to Amazon Simple Workflow Service (Amazon SWF), an actMty worker is a program that receives actMty tasks, performs them, and provides results back. Which translates to a piece of software that implements tasks.
Reference: http://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dg-develop-actMty.html
Q4. A user is trying to share a video file with all his friends. Which of the below mentioned AWS services will be cheapest and easy to use?
A. AWS S3
B. AWS EC2
C. AWS RRS
D. AWS Glacier
Answer: C
Explanation:
AWS RRS provides the same functionality as AWS S3, but at a cheaper rate. It is ideally suited for non mission critical applications. It provides less durability than S3, but is a cheaper option.
Reference: http://docs.aws.amazon.com/AmazonS3/Iatest/dev/UsingRRS.htmI
Q5. A user is planning to host a mobile game on EC2 which sends notifications to active users on either high score or the addition of new features. The user should get this notification when he is online on his mobile device. Which of the below mentioned AWS services can help achieve this functionality?
A. AWS Simple Notification Service.
B. AWS Simple Queue Service.
C. AWS Mobile Communication Service.
D. AWS Simple Email Service.
Answer: A
Explanation:
Amazon Simple Notification Service (Amazon SNS) is a fast, filexible, and fully managed push messaging service. Amazon SNS makes it simple and cost-effective to push to mobile devices, such as iPhone, iPad, Android, Kindle Fire, and internet connected smart devices, as well as pushing to other distributed services.
Reference: http://aws.amazon.com/sns
Q6. Is there a limit to how much throughput you can get out of a single table in DynamoDB?
A. Yes, not more than 1,000 writes/second or 1,000 reads/second
B. No
C. Yes, not more than 10,000 writes/second or 10,000 reads/second
D. No, but If you wish to exceed throughput rates of 10,000 writes/second or 10,000 reads/second, you must first contact AWS.
Answer: D
Explanation:
In DynamoDB, you can increase the throughput you have provisioned for your table using UpdateTabIe API or in the AWS Management Console. If you wish to exceed throughput rates of 10,000 writes/second or 10,000 reads/second, you must first contact AWS.
Reference: http://aws.amazon.com/dynamodb/
Q7. In AWS Elastic Beanstalk, you can update your deployed application even while it is part of a running environment. For a Java application, you can also use to update your deployed application.
A. the AWS Toolkit for Eclipse
B. the AWS Toolkit for Visual Studio
C. the AWS Toolkit for JVM
D. the AWS Toolkit for Netbeans
Answer: A
Explanation:
In AWS Elastic Beanstalk, you can update your deployed application, even while it is part of a running environment. For a Java application, you can also use the AWS Toolkit for Eclipse to update your deployed application.
Reference: http://docs.aws.amazon.com/elasticbeanstaIk/latest/dg/GettingStarted.WaIkthrough.htmI
Q8. A user is using an EBS backed instance. Which of the below mentioned statements is true?
A. The user will be charged for volume and instance only when the instance is running
B. The user will be charged for the volume even if the instance is stopped
C. The user will be charged only for the instance running cost
D. The user will not be charged for the volume if the instance is stopped
Answer: B
Explanation:
If a user has launched an EBS backed instance, the user will be charged for the EBS volume even though the instance is in a stopped state. The instance will be charged for the EC2 hourly cost only when it is running.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-detaching-volume.html
Q9. A user has enabled the automated backup, but not specified the backup window. What will RDS do in this case?
A. Will throw an error on instance launch
B. RDS will take 3 AM — 3:30 AM as the default window
C. RDS assigns a random time period based on the region
D. Will not allow to launch a DB instance
Answer: C
Explanation:
If the user does not specify a preferred backup window while enabling an automated backup, Amazon RDS assigns a default 30-minute backup window which is selected at random from an 8-hour block of
time per region. Reference:
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Overview.BackingUpAndRestoringAmazonR DSInstances.htmI
Q10. A user wants to configure AutoScaIing which scales up when the CPU utilization is above 70% and scales down when the CPU utilization is below 30%. How can the user configure AutoScaIing for the above mentioned condition?
A. Use AutoScaIing with a schedule
B. Configure ELB to notify AutoScaIing on load increase or decrease
C. Use dynamic AutoScaIing with a policy
D. Use AutoScaIing by manually modifying the desired capacity during a condition
Answer: C
Explanation:
The user can configure the AutoScaIing group to automatically scale up and then scale down based on the specified conditions. To configure this, the user must setup policies which will get triggered by the C|oudWatch alarms.
Reference:
http://docs.aws.amazon.com/AutoScaling/latest/DeveIoperGuide/as-scaIe-based-on-demand.html
Q11. Can a user get a notification of each instance start / terminate configured with Auto Scaling?
A. Yes, always
B. No
C. Yes, if configured with the Auto Scaling group
D. Yes, if configured with the Launch Config
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/AutoScaIing/latest/DeveIoperGuide/GettingStartedTutoriaI.html
Q12. AWS Elastic Load Balancer supports SSL termination.
A. True. For specific availability zones only.
B. False
C. True. For specific regions only
D. True. For all regions
Answer: D
Explanation:
You can configure your load balancer in ELB (Elastic Load Balancing) to use a SSL certificate in order to improve your system security.The load balancer uses the certificate to terminate and then decrypt requests before sending them to the back-end instances. Elastic Load Balancing uses AWS Identity and Access Management (IAM) to upload your certificate to your load balancer.
Reference: http://docs.aws.amazon.com/EIasticLoadBaIancing/latest/DeveIoperGuide/US_SettingUpLoadBaIancerH TTPS.htmI
Q13. A user has attached one RDS security group with 5 RDS instances. The user has changed the ingress rule for the security group. What will be the initial status of the ingress rule?
A. Approving
B. Implementing
C. Authorizing
D. It is not possible to assign a single group to multiple DB instances
Answer: C
Explanation:
When the user makes any changes to the RDS security group the rule status will be authorizing for some time until the changes are applied to all instances that the group is connected with. Once the changes are propagated the rule status will change to authorized.
Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_WorkingWithSecurityGroups.html
Q14. In regard to AWS CIoudFormation, what is a stack?
A. The set of AWS templates that are created and managed as a template
B. The set of AWS resources that are created and managed as a template
C. The set of AWS resources that are created and managed as a single unit
D. The set of AWS templates that are created and managed as a single unit
Answer: C
Explanation:
A stack is the set of AWS resources that are created and managed as a single unit when AWS C|oudFormation initiates a template.
Reference: http://docs.aws.amazon.com/AWSCIoudFormation/latest/UserGuide/concept-stack.html
Q15. A user is trying to find the state of an S3 bucket with respect to versioning. Which of the below mentioned states AWS will not return when queried?
A. versioning-enabled
B. versioning-suspended
C. unversioned
D. versioned
Answer: D
Explanation:
S3 buckets can be in one of the three states: unversioned (the default), versioning-enabled or versioning-suspended. The bucket owner can configure the versioning state of a bucket. The versioning state applies to all (never some) of the objects in that bucket. The first time owner enables a bucket for versioning, objects in it are thereafter always versioned and given a unique version ID.
Reference: http://docs.aws.amazon.com/AmazonS3/Iatest/dev/Versioning.htmI