AWS-Certified-Developer-Associate Exam
Tips to Pass AWS-Certified-Developer-Associate Exam (51 to 60)
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Q51. ExamKiIIer (with AWS account ID H1122223333) has created 50 IAM users for its orgAMzation’s employees. ExamKiI|er wants to make the AWS console login URL for all IAM users like: https://examki||er.signin.aws.amazon.com/consoIe/. How can this be configured?
A. The user needs to use Route 53 to map the examkiller domain and IAM URL
B. Create an IAM AWS account alias with the name examkiller
C. It is not possible to have a personalized IAM login URL
D. Create an IAM hosted zone Identity for the domain examkiller
Answer: B
Explanation:
If a user wants the URL of the AWS IAM sign-in page to have a company name instead of the AWS account ID, he can create an alias for his AWS account ID.
Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/AccountAIias.html
Q52. A user is planning to host MS SQL on an EBS volume. It was recommended to use the AWS RDS. What advantages will the user have if he uses RDS in comparison to an EBS based DB?
A. Better throughput with PIOPS
B. Automated backup
C. NIS SQL is not supported with RDS
D. High availability with multi AZs
Answer: B
Explanation:
Comparing with on-premises or EC2 based NIS SQL, RDS provides an automated backup feature. PIOPS is available with both RDS and EBS. However, HA is not available with NIS SQL.
Reference: https://aws.amazon.com/rds/faqs/
Q53. When you create a table with a hash-and-range key, you must define one or more secondary indexes on that table.
A. False, hash-range key is another name for secondary index
B. False, it is optional
C. True
D. False, when you have Hash-Range key you cannot define Secondary index
Answer: B
Explanation:
When you create a table with a hash-and-range key in DynamoDB, you can also define one or more secondary indexes on that table.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/LSI.htmI
Q54. A user has launched a MySQL RDS. The user wants to plan for the DR and automate the snapshot. Which of the below mentioned functionality offers this option with RDS?
A. Copy snapshot
B. Automated synchronization
C. Snapshot
D. Automated backup
Answer: D
Explanation:
Amazon RDS provides two different methods for backing up and restoring the Amazon DB instances: automated backups and DB snapshots. Automated backups automatically back up the DB instance during a specific, user-definable backup window, and keep the backups for a limited, user-specified period of time.
Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Overview.BackingUpAndRestoringAmazonR DSInstances.htmI
Q55. What is the maximum time messages can be stored in SQS?
A. 14 days
B. one month
C. 4 days
D. 7 days
Answer: A
Explanation:
A message can be stored in the Simple Queue Service (SQS) from 1 minute up to a maximum of 14 days. Reference: http://aws.amazon.com/sqs/faqs/#How_Iong_can_I_keep_my_messages_in_Amazon_SQS_queues
Q56. A user is accessing an EC2 instance on the SSH port for IP 10.20.30.40. Which one is a secure way to
configure that the instance can be accessed only from this IP?
A. In the security group, open port 22 for IP 1020.30.40/0
B. In the security group, open port 22 for IP 10.20.30.40/32
C. In the security group, open port 22 for IP 10.20.30.40/24
D. In the security group, open port 22 for IP 10.20.30.40
Answer: B
Explanation:
In AWS EC2, while configuring a security group, the user needs to specify the IP address in CIDR notation. The CIDR IP range 10.20.30.40/32 says it is for a single IP 10.20.30.40. If the user specifies the IP as 10.20.30.40 only, the security group will not accept and ask it in a CIRD format.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-network-security.html
Q57. When a user is detaching an EBS volume from a running instance and attaching it to a new instance, which of the below mentioned options should be followed to avoid file system damage?
A. Unmount the volume first
B. Stop all the I/O of the volume before processing
C. Take a snapshot of the volume before detaching
D. Force Detach the volume to ensure that all the data stays intact
Answer: A
Explanation:
When a user is trying to detach an EBS volume, the user can either terminate the instance or explicitly remove the volume. It is a recommended practice to unmount the volume first to avoid any file system damage.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-detaching-volume.html
Q58. A user has developed an application which is required to send the data to a NoSQL database. The user wants to decouple the data sending such that the application keeps processing and sending data but
does not wait for an acknowledgement of DB. Which of the below mentioned applications helps in this scenario?
A. AWS Simple Notification Service
B. AWS Simple Workflow
C. AWS Simple Query Service
D. AWS Simple Queue Service
Answer: D
Explanation:
Amazon Simple Queue Service (SQS) is a fast, reliable, scalable, and fully managed message queuing service. SQS provides a simple and cost-effective way to decouple the components of an application. In this case, the user can use AWS SQS to send messages which are received from an application and sent to DB. The application can continue processing data without waiting for any acknowledgement from DB. The user can use SQS to transmit any volume of data without losing messages or requiring other services to always be available.
Reference: http://aws.amazon.com/sqs/
Q59. Regarding Amazon SNS, you can send notification messages to mobile devices through any of the following supported push notification services, EXCEPT:
A. Google Cloud Messaging for Android (GCM)
B. Apple Push Notification Service (APNS)
C. Amazon Device Messaging (ADM)
D. Microsoft Windows Mobile Messaging (MWMM)
Answer: D
Explanation:
In Amazon SNS, you have the ability to send notification messages directly to apps on mobile devices. Notification messages sent to a mobile endpoint can appear in the mobile app as message alerts, badge updates, or even sound alerts. Microsoft Windows MobiIe Messaging (MWMM) doesn’t exist and is not supported by Amazon SNS.
Reference: http://docs.aws.amazon.com/sns/latest/dg/SNSMobiIePush.htmI
Q60. Can you configure an RDS Read Replica using CIoudFormation templates?
A. Yes, provided that you have root access.
B. Yes, when you create a new CIoudFormation template
C. Yes, but not for all Regions.
D. No, you can add the ReadRepIica only when the resource is made available by CIoudFormation
Answer: B
Explanation:
AWS CIoudFormation gives developers and systems administrators an easy way to create and manage collections of AWS resources. You can now set Read Replicas for your databases with RDS when you create a new C|oudFormation tempIate.You can start using it with the sample template of C|oudFormation.
Reference:
https://s3.amazonaws.com/cloudformation-templates-us-east-1/RDS_MySQL_With_Read_RepIica.tempI