What Best Quality DVA-C01 Vce Is

NEW QUESTION 1
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 2
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 3
A user is creating multiple IAM users. What advice should be given to him to enhance the security?

• A. Grant least prMleges to the indMdual user
• B. Grant all higher prMleges to the group
• C. Grant less prMleges for user, but higher prMleges for the group
• D. Grant more prMleges to the user, but least prMleges to the group

Answer: A

Explanation:
It is a recommended rule that the root user should grant the least prMleges to the IAM user or the group. The higher the prMleges, the more problems it can create.
Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/IAMBestPractices.htmI

NEW QUESTION 4
Regarding Amazon SWF, the coordination logic in a workflow is contained in a software program called a

• A. Handler
• B. Decider
• C. Cordinator
• D. Worker

Answer: B

Explanation:
In Amazon SWF, the coordination logic in a workflow is contained in a software program called a decider. The decider schedules actMty tasks, provides input data to the actMty workers, processes events that arrive while the workflow is in progress, and ultimately ends (or closes) the workflow when the objective has been completed.
Reference: http://docs.aws.amazon.com/amazonswf/latest/developerguide/swf-dg-intro-to-swf.html

NEW QUESTION 5
A user wants to achieve High Availability with PostgreSQL DB. Which of the below mentioned functionalities helps achieve HA?

• A. Read Replica
• B. Multi AZ
• C. Multi region
• D. PostgreSQL does not support HA

Answer: B

Explanation:
The Multi AZ feature allows the user to achieve High Availability. For Mu|ti AZ, Amazon RDS
automatically provisions and maintains a synchronous "standby" replica in a different Availability Zone. Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Welcome.html

NEW QUESTION 6
A corporate web application is deployed within an Amazon VPC, and is connected to the corporate data center via IPSec VPN. The application must authenticate against the on-premise LDAP server. Once authenticated, logged-in users can only access an S3 keyspace specific to the user.
Which two approaches can satisfy the objectives? Choose 2 answers

• A. The application authenticates against LDA
• B. The application then calls the IAM Security Service to login to IAM using the LDAP credential
• C. The application can use the IAM temporary credentials to access the appropriate S3 bucket.
• D. The application authenticates against LDAP, and retrieves the name of an IAM role associated with the use
• E. The application then calls the IAM Security Token Service to assume that IAM Rol
• F. The application can use the temporary credentials to access the appropriate S3 bucket.
• G. The application authenticates against IAM Security Token Service using the LDAP credential
• H. The application uses those temporary AWS security credentials to access the appropriate S3 bucket.
• I. Develop an identity broker which authenticates against LDAP, and then calls IAM Security Token Service to get IAM federated user credential
• J. The application calls the identity broker to get IAM federated user credentials with access to the appropriate S3 bucket.
• K. Develop an identity broker which authenticates against IAM Security Token Service to assume an IAM Role to get temporary AWS security credential
• L. The application calls the identity broker to get AWS temporary security credentials with access to the appropriate S3 bucket.

Answer: BD

NEW QUESTION 7
When using a large Scan operation in DynamoDB, what technique can be used to minimize the impact of a scan on a tabIe's provisioned throughput?

• A. Set a smaller page size for the scan
• B. Use parallel scans
• C. Define a range index on the table
• D. Prewarm the table by updating all items

Answer: C

NEW QUESTION 8
A user is planning to host a scalable dynamic web application on AWS. Which of the services may not be required by the user to achieve automated scalability?

• A. CIoudWatch
• B. S3
• C. AutoScaIing
• D. AWS EC2 instances

Answer: B

Explanation:
The user can achieve automated scaling by launching different EC2 instances and making them a part of an ELB. Cloudwatch will be used to monitor the resources and based on the scaling need it will trigger policies. AutoScaIing is then used to scale up or down the instances.
Reference: http://docs.aws.amazon.com/AutoScaIing/latest/DeveIoperGuide/\NhatIsAutoScaIing.htmI

NEW QUESTION 9
How many types of block devices does Amazon EC2 support?

• A. 5
• B. 1
• C. 2
• D. 4

Answer: C

Explanation:
Amazon EC2 supports 2 types of block devices. Reference:
http://docs.amazonwebservices.com/AWSEC2/latest/UserGuide/block-device-mapping-concepts.html

NEW QUESTION 10
What is the maximum number of S3 Buckets available per AWS account?

• A. 100 per region
• B. there is no limit
• C. 100 per account
• D. 500 per account
• E. 100 per IAM user

Answer: C

NEW QUESTION 11
How long are the messages kept on an SQS queue by default?

• A. If a message is not read, it is never deleted
• B. 2 weeks
• C. 1 day
• D. 4 days

Answer: D

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 12
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

NEW QUESTION 13
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 14
A user has launched five instances with ELB. How can the user add the sixth EC2 instance to ELB?

• A. The user can add the sixth instance on the fly.
• B. The user must stop the ELB and add the sixth instance.
• C. The user can add the instance and change the ELB config file.
• D. The ELB can only have a maximum of five instance

Answer: A

Explanation:
Elastic Load Balancing automatically distributes incoming traffic across multiple EC2 instances. You create a load balancer and register instances with the load balancer in one or more Availability Zones. The load balancer serves as a single point of contact for clients. This enables you to increase the availability of your application. You can add and remove EC2 instances from your load balancer as your needs change, without disrupting the overall flow of information.
Reference: http://docs.aws.amazon.com/E|asticLoadBaIancing/latest/DeveIoperGuide/Svclntro.htm|

NEW QUESTION 15
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

Answer: A

Explanation:
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

NEW QUESTION 16
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