AWS-Certified-Developer-Associate Amazon Exam Questions and Free Practice Test

Question 13

A user has enabled automated backup for an RDS instance. What is the longest duration for which the user can retain the automated backup?

A. 25 days

B. 15 days

C. 45 days

D. 35 days

Correct Answer:D
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. The maximum period can be 35 days.
Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Overview.BackingUpAndRestoringAmazonR DSInstances.htmI

Question 14

An orgAMzation has launched two applications: one for blogging and one for ECM on the same AWS Linux EC2 instance running in the AWS VPC. The orgAMzation has attached two private IPs (primary and secondary) to the above mentioned instance. The orgAMzation wants the instance OS to recognize the secondary IP address. How can the orgAMzation configure this?

A. Use the ec2-net-utility package which updates routing tables, uses DHCP to refresh the secondary IP and adds the network interface.

B. Use the ec2-net-utils package which will configure an additional network interface and update the routing table

C. Use the ec2-ip-update package which can configure the network interface as well as update the secondary IP with DHCP.

D. Use the ec2-ip-utility package which can update the routing tables as well as refresh the secondary IP using DHCP.

Correct Answer:B
A Virtual Private Cloud (VPC) is a virtual network dedicated to the user’s AWS account. It enables the
user to launch AWS resources into a virtual network that the user has defined. With VPC the user can specify multiple private IP addresses for his instances.
The number of network interfaces and private IP addresses that a user can specify for an instance depends on the instance type. This scenario helps when the user wants to host multiple websites on a single EC2 instance. After the user has assigned a secondary private IP address to his instance, he needs to configure the operating system on that instance to recognize the secondary private IP address. For AWS Linux, the ec2-net-utils package can take care of this step. It configures additional network interfaces that the user can attach while the instance is running, refreshes secondary IP addresses during DHCP lease renewal, and updates the related routing rules.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/MuItipIeIP.html

Question 15

AWS Elastic Beanstalk will change the health status of a web server environment tier to gray color when:

A. AWS Elastic Beanstalk detects other problems with the environment that are known to make the application unavailable

B. Your application hasn't responded to the application health check URL within the last one hour.

C. Your application hasn't responded to the application health check URL within the last five minutes.

D. Your appIication's health status is unknown because status is reported when the application is not in the ready state.

Correct Answer:D
AWS Elastic Beanstalk will change the health status of a web server environment tier to gray color when your appIication's health status is unknown (because status is reported when the application is not in the ready state).
Reference: http://docs.aws.amazon.com/elasticbeanstaIk/latest/dg/using-features.heaIthstatus.htmI

Question 16

In regard to DynamoDB, which of the following statements is correct?

A. An Item should have at least two value sets, a primary key and another attribute.

B. An Item can have more than one attributes.

C. A primary key should be single-valued.

D. An attribute can have one or several other attribute

Correct Answer:B
In Amazon DynamoDB, a database is a collection of tables. A table is a collection of items and each item
is a collection of attributes.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DataModeI.html

Question 17

A user has launched an EC2 instance. However, due to some reason the instance was terminated. If the user wants to find out the reason for termination, where can he find the details?

A. The user can get information from the AWS console, by checking the Instance description under the State transition reason label

B. The user can get information from the AWS console, by checking the Instance description under the Instance Termination reason label

C. The user can get information from the AWS console, by checking the Instance description under the Instance Status Change reason label

D. It is not possible to find the details after the instance is terminated

Correct Answer:A
An EC2 instance, once terminated, may be available in the AWS console for a while after termination. The user can find the details about the termination from the description tab under the label State transition reason. If the instance is still running, there will be no reason listed. If the user has explicitly stopped or terminated the instance, the reason will be "User initiated shutdown".
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/Using_|nstanceStraightToTerminated.html

Question 18

Regarding Amazon SNS, when you want to subscribe to a topic and receive notifications to your email, in the Protocol drop-down box, you should select .

A. Email

B. Message

C. SMTP

D. IMAP

Correct Answer:A
In Amazon SNS, when you want to subscribe to a topic and receive notifications to your email, select Email in the Protocol drop-down box. Enter an email address you can use to receive the notification in the Endpoint field.
Reference: http://docs.aws.amazon.com/sns/latest/dg/SubscribeTopic.html

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