DVA-C01 | Improved DVA-C01 Training For AWS Certified Developer Associate Exam Certification

NEW QUESTION 1
An orgAMzation has enabled a strict password policy for its IAM users. The orgAMzation is taking help from the IAM console to set the password policy. Which of the below mentioned rules cannot be specified by the user as a part of the policy?

• A. Allow at least one lower case letter
• B. Allow at least one number
• C. Allow at least one non-alphanumeric character
• D. Do not allow the user to use the password from the last three passwords

Answer: D

Explanation:
AWS IAM allows an orgAMzation to create multiple users and provide them access to various AWS services. By default when the user is created, he does not have password enabled and can not login to AWS console. If the orgAMzation wants to allow the users to login to AWS console, they can enable password for each user. It is required that IAM users follow certain guidelines to set their IAM login password. For this IAM provides root account owner to setup passwrod policy. The password policy also lets the specify whether all IAM users can change their own passwords. As part of policy, orgAMzation can specify that passwords for IAM users must be of a certain minimum length, must include certain characters, and a few more criteria such as below.
One upper/ lower or both letters One alpha numeric
One number
Reference: http://docs.aws.amazon.com/|AM/Iatest/UserGuide/Using_ManagingPasswordPoIicies.htm|

NEW QUESTION 2
AWS Elastic Load Balancer supports SSL termination.

• A. Tru
• B. For specific availability zones only.
• C. False
• D. Tru
• E. For specific regions only
• F. Tru
• G. 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

NEW QUESTION 3
Which of the following services are included at no additional cost with the use of the AWS platform? Choose 2 answers

• A. Simple Storage Service
• B. Elastic Compute Cloud
• C. Auto Scaling
• D. Elastic Load Balancing
• E. CIoudFormation
• F. Simple Workflow Service

Answer: CE

NEW QUESTION 4
Does Amazon DynamoDB support both increment and decrement atomic operations?

• A. No, neither increment nor decrement operations.
• B. Only increment, since decrement are inherently impossible with DynamoDB's data model.
• C. Only decrement, since increment are inherently impossible with DynamoDB's data model.
• D. Yes, both increment and decrement operation

Answer: D

Explanation:
Amazon DynamoDB supports increment and decrement atomic operations.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/APISummary.html

NEW QUESTION 5
How long can you keep your Amazon SQS messages in Amazon SQS queues?

• A. From 120 secs up to 4 weeks
• B. From 10 secs up to 7 days
• C. From 60 secs up to 2 weeks
• D. From 30 secs up to 1 week

Answer: C

Explanation:
The SQS message retention period is configurable and can be set anywhere from 1 minute to 2 weeks. The default is 4 days and once the message retention limit is reached your messages will be automatically deleted. The option for longer message retention provides greater filexibility to allow for longer intervals between message production and consumption.
Reference: https://aws.amazon.com/sqs/faqs/

NEW QUESTION 6
You cannot access your AWS console, so you revert to using the CLI that you are not familiar with. Which of the following commands is not a valid CLI command for EC2 instances?

• A. ec2-allocate-address
• B. ec2-attach-internet-gateway
• C. ec2-associate-route-table
• D. ec2-allocate-interface

Answer: D

Explanation:
You can use the CLI tools to manage your Amazon EC2 resources (such as instances, security groups, and volumes) and your Amazon VPC resources (such as VPCs, subnets, route tables, and Internet gateways). Before you can start using the tools, you must download and configure them.
The following are valid CLI commands for EC2 instances: ec2-accept-vpc-peering-connection
ec2-allocate-address
ec2-assign-private-ip-addresses ec2-associate-address
ec2-associate-dhcp-options ec2-associate-route-table
ec2-attach-internet-gateway
ec2-attach-network-interface (not ec2-allocate-interface) Reference:
http://docs.aws.amazon.com/AWSEC2/latest/CommandLineReference/command-reference.html

NEW QUESTION 7
A user has launched an EBS backed Linux instance. How can a user detach the root device and attach it to another instance as a secondary volume?

• A. Unmount the root volume first and then detach it
• B. It is not possible to mount the root volume to some other instance
• C. Stop the first instance and then attach instance’s root volume as a new volume to the other instance
• D. It is not possible to mount the root device as a secondary volume on the other instance

Answer: C

Explanation:
If an Amazon EBS volume is the root device of an instance, it cannot be detached unless the instance is in the stopped state.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-detaching-volume.html

NEW QUESTION 8
Which code snippet below returns the URL of a load balanced web site created in CIoudFormation with an AWS::EIasticLoadBaIancing::LoadBaIancer resource name "EIasticLoad BaIancer"?

• A. "Fn::Join" : [ '‘'‘ . ["http://", {"Fn::GetAtr" : ["EIasticLoadBalancer","DNSName"]}]]
• B. "Fn::Join" : [ '‘'‘ . ["http://", {"Fn::GetAtr" : ["E|asticLoadBa|ancer","Ur|"]}]]
• C. "Fn::Join" : [ '‘'‘ . ["http://", {"Ref" : "EIasticLoadBaIancerUr|"}]]
• D. "Fn::Join" : ["http://", {"Ref" : "EIasticLoadBaIancerDNSName"}]]

Answer: B

NEW QUESTION 9
A root AWS account owner has created three IAM users: Bob, John and Michael. Michael is the IAM administrator. Bob and John are not the superpower users, but users with some pre-defined policies. John does not have access to modify his password. Thus, he asks Bob to change his password. How can Bob change John’s password?

• A. This statement is fals
• B. It should be Michael who changes the password for John
• C. It is not possible that John cannot modify his password
• D. Provided Bob is the manager of John
• E. Provided Michael has added Bob to a group, which has permissions to modify the IAM passwords

Answer: D

Explanation:
Generally with IAM users, the password can be modified in two ways. The first option is to define the IAM level policy which allows each user to modify their own passwords. The other option is to create a group and create a policy for the group which can change the passwords of various IAM users.
Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/HowToPwdIAMUser.htmI

NEW QUESTION 10
Which of the following groups is AWS Elastic Beanstalk best suited for?

• A. Those who want to deploy and manage their applications within minutes in the AWS cloud
• B. Those who want to privately store and manage Git repositories in the AWS cloud.
• C. Those who want to automate the deployment of applications to instances and to update the applications as required
• D. Those who want to model, visualize, and automate the steps required to release software

Answer: A

Explanation:
AWS Elastic Beanstalk is best suited for those groups who want to deploy and manage their applications within minutes in the AWS cloud. As a bonus, you don’t even need experience with cloud computing to get started.
Reference: https://aws.amazon.com/elasticbeansta|k/faqs/

NEW QUESTION 11
In DynamoDB, to get a detailed listing of secondary indexes on a table, you can use the action.

• A. DescribeTabIe
• B. BatchGetItem
• C. Getltem
• D. TabIeName

Answer: A

Explanation:
In DynamoDB, DescribeTab|e returns information about the table, including the current status ofthe table, when it was created, the primary key schema, and any indexes on the table.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Secondarylndexes.htmI

NEW QUESTION 12
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

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

NEW QUESTION 13
In DynamoDB, could you use IAM to grant access to Amazon DynamoDB resources and API actions?

• A. Yes
• B. Depended to the type of access
• C. In DynamoDB there is no need to grant access
• D. No

Answer: A

Explanation:
Amazon DynamoDB integrates with AWS Identity and Access Management (IAM). You can use AWS IAM to grant access to Amazon DynamoDB resources and API actions. To do this, you first write an AWS IAM policy, which is a document that explicitly lists the permissions you want to grant. You then attach that policy to an AWS IAM user or role.
Reference: http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/UsingIAMWithDDB.htmI

NEW QUESTION 14
What is the maximum size for messages stored in SQS?

• A. 256KB
• B. 128KB
• C. 1024KB
• D. 64KB

Answer: A

Explanation:
By default, SQS queues allow you to send the largest supported payload size, currently 256KB. You can choose to specify a limit on how many bytes can be sent per payload, using the lVIaximumlVIessageSize attribute of the SetQueueAttributes method.
Reference: http://aws.amazon.com/sqs/faqs/

NEW QUESTION 15
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

NEW QUESTION 16
You have a number of image files to encode. In an Amazon SQS worker queue, you create an Amazon SQS message for each file specifying the command (jpeg-encode) and the location of the file in Amazon S3. Which of the following statements best describes the functionality of Amazon SQS?

• A. Amazon SQS is for single-threaded sending or receMng speeds.
• B. Amazon SQS is a non-distributed queuing system.
• C. Amazon SQS is a distributed queuing system that is optimized for horizontal scalability, not for single-threaded sending or receMng speeds.
• D. Amazon SQS is a distributed queuing system that is optimized for vertical scalability and for single-threaded sending or receMng speeds.

Answer: C

Explanation:
Amazon SQS is a distributed queuing system that is optimized for horizontal scalability, not for
single-threaded sending or receMng speeds. A single client can send or receive Amazon SQS messages at a rate of about 5 to 50 messages per second. Higher receive performance can be achieved by requesting multiple messages (up to 10) in a single call. It may take several seconds before a message that has been to a queue is available to be received.
Reference: http://media.amazonwebservices.com/AWS_Storage_Options.pdf

NEW QUESTION 17
When you register an actMty in Amazon SWF, you provide the following information, except:

• A. a name
• B. timeout values
• C. a domain
• D. version

Answer: C

Explanation:
When designing an Amazon SWF workflow, you precisely define each of the required actMties. You then register each actMty with Amazon SWF as an actMty type. When you register the actMty, you provide information such as a name and version, and some timeout values based on how long you expect the actMty to take.
Reference: http://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dg-intro-to-swf.html

NEW QUESTION 18
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