Which of the following statements about SQS is true?

Messages will be delivered one or more times and message delivery order is indeterminate

Messages will be delivered exactly once and messages will be delivered in First in, First out order

Messages will be delivered exactly once and message delivery order is indeterminate

Messages will be delivered one or more times and messages will be delivered in First in, First out order

Messages will be delivered one or more times and message delivery order is indeterminate

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

The application authenticates against LDAP, and retrieves the name of an IAM role associated with the user. The application then calls the IAM Security Token Service to assume that IAM Role. The application can use the temporary credentials to access the appropriate S3 bucket.

Develop an identity broker which authenticates against LDAP, and then calls IAM Security Token Service to get IAM federated user credentials. The application calls the identity broker to get IAM federated user credentials with access to the appropriate S3 bucket.

The application authenticates against LDAP. The application then calls the IAM Security Service to login to IAM using the LDAP credentials. The application can use the IAM temporary credentials to access the appropriate S3 bucket.

The application authenticates against LDAP, and retrieves the name of an IAM role associated with the user. The application then calls the IAM Security Token Service to assume that IAM Role. The application can use the temporary credentials to access the appropriate S3 bucket.

The application authenticates against IAM Security Token Service using the LDAP credentials. The application uses those temporary AWS security credentials to access the appropriate S3 bucket.

Develop an identity broker which authenticates against LDAP, and then calls IAM Security Token Service to get IAM federated user credentials. The application calls the identity broker to get IAM federated user credentials with access to the appropriate S3 bucket.

Develop an identity broker which authenticates against IAM Security Token Service to assume an IAM Role to get temporary AWS security credentials. The application calls the identity broker to get AWS temporary security credentials with access to the appropriate S3 bucket.

Company B provides an online image recognition service and utilizes SQS to decouple system components for scalability The SQS consumers poll the imaging queue as often as possible to keep end-to-end throughput as high as possible. However, Company B is realizing that polling in tight loops is burning CPU cycles and increasing costs with empty responses. How can Company B reduce the number of empty responses?

Set the Imaging queue ReceiveMessageWaitTimeSeconds attribute to 20 seconds

Set the imaging queue visibility Timeout attribute to 20 seconds

Set the Imaging queue ReceiveMessageWaitTimeSeconds attribute to 20 seconds

Set the imaging queue MessageRetentionPeriod attribute to 20 seconds

Set the DelaySeconds parameter of a message to 20 seconds

An Amazon S3 bucket, "myawsbucket” is configured with website hosting in Tokyo region, what is the region-specific website endpoint?

myawsbucket.s3-website-ap-northeast-1.amazonawscom

www.myawsbucket.ap-northeast-1.amazonaws.com

myawsbucket.s3-website-ap-northeast-1.amazonawscom

myawsbucket.tokyo.amazonaws.com

You are inserting 1000 new items every second in a DynamoDB table. Once an hour these items are analyzed and then are no longer needed. You need to minimize provisioned throughput, storage, and API calls. Given these requirements, what is the most efficient way to manage these Items after the analysis?

Delete the table and create a new table per hour

Retain the items in a single table

Delete items individually over a 24 hour period

Delete the table and create a new table per hour

You have written an application that uses the Elastic Load Balancing service to spread traffic to several web servers. Your users complain that they are sometimes forced to login again in the middle of using your application, after they have already logged in. This is not behavior you have designed.What is a possible solution to prevent this happening?

Use ElastiCache to save session state.

Use instance memory to save session state.

Use instance storage to save session state.

Use ElastiCache to save session state.

Use Glacier to save session slate.

You run an ad-supported photo sharing website using S3 to serve photos to visitors of your site. At some point you find out that other sites have been linking to the photos on your site, causing loss to your business. What is an effective method to mitigate this?

Remove public read access and use signed URLs with expiry dates.

Store photos on an EBS volume of the web server

Remove public read access and use signed URLs with expiry dates.

Use CloudFront distributions for static content.

Block the IPs of the offending websites in Security Groups.

Which statements about DynamoDB are true? Choose 2 answers

DynamoDB uses optimistic concurrency control

DynamoDB uses conditional writes for consistency

DynamoDB uses a pessimistic locking model

DynamoDB uses optimistic concurrency control

DynamoDB uses conditional writes for consistency

DynamoDB restricts item access during reads

DynamoDB restricts item access during writes

You are providing AWS consulting services for a company developing a new mobile application that will be leveraging Amazon SNS Mobile Push for push notifications. In order to send direct notification messages to individual devices each device registration identifier or token needs to be registered with SNS; however the developers are not sure of the best way to do this. You advise them to:

Call the CreatePlatformEndPoint API function to register multiple device tokens.

Bulk upload the device tokens contained in a CSV file via the AWS Management Console.

Let the push notification service (e.g. Amazon Device Messaging) handle the registration.

Implement a token vending service to handle the registration.

Call the CreatePlatformEndPoint API function to register multiple device tokens.

You are writing to a DynamoDB table and receive the following exception:" ProvisionedThroughputExceededException". though according to your Cloudwatch metrics for the table, you are not exceeding your provisioned throughput. What could be an explanation for this?

You're exceeding your capacity on a particular Hash Key

You haven't provisioned enough DynamoDB storage instances

You're exceeding your capacity on a particular Range Key

You're exceeding your capacity on a particular Hash Key

You're exceeding your capacity on a particular Sort Key

Your application is trying to upload a 6 GB file to Simple Storage Service and receive a “Your proposed upload exceeds the maximum allowed object size." error message. What is a possible solution for this?

Use the multi-part upload API for this object

None, Simple Storage Service objects are limited to 5 GB

Use the multi-part upload API for this object

Use the large object upload API for this object

Contact support to increase your object size limit

Games-R-Us is launching a new game app for mobile devices. Users will log into the game using their existing Facebook account and the game will record player data and scoring information directly to a DynamoDB table. What is the most secure approach for signing requests to the DynamoDB API?

Request temporary security credentials using web identity federation to sign the requests

Create an IAM user with access credentials that are distributed with the mobile app to sign the requests

Distribute the AWS root account access credentials with the mobile app to sign the requests

Request temporary security credentials using web identity federation to sign the requests

Establish cross account access between the mobile app and the DynamoDB table to sign the requests

Company C has recently launched an online commerce site for bicycles on AWS. They have a "Product" DynamoDB table that stores details for each bicycle, such as, manufacturer, color, price, quantity and size to display in the online store. Due to customer demand, they want to include an image for each bicycle along with the existing details. Which approach below provides the least impact to provisioned throughput on the "Product" table?

Store the images in Amazon S3 and add an S3 URL pointer to the "Product" table item for each image

Serialize the image and store it in multiple DynamoDB tables

Create an "Images" DynamoDB table to store the Image with a foreign key constraint to the "Product” table

Add an image data type to the "Product" table to store the images in binary format

Store the images in Amazon S3 and add an S3 URL pointer to the "Product" table item for each image

Which DynamoDB limits can be raised by contacting AWS support? Choose 2 answers

The number of tables per account

The number of provisioned throughput units per account

The number of hash keys per account

The maximum storage used per account

The number of tables per account

The number of local secondary indexes per account

The number of provisioned throughput units per account

When a Simple Queue Service message triggers a task that takes 5 minutes to complete, which process below will result in successful processing of the message and remove it from the queue while minimizing the chances of duplicate processing?

Retrieve the message with an increased visibility timeout, process the message, delete the message from the queue

Retrieve the message with an increased visibility timeout, delete the message from the queue, process the message

Retrieve the message with increased DelaySeconds, process the message, delete the message from the queue

Retrieve the message with increased DelaySeconds, delete the message from the queue, process the message

Company A has an S3 bucket containing premier content that they intend to make available to only paid subscribers of their website. The S3 bucket currently has default permissions of all objects being private to prevent inadvertent exposure of the premier content to non-paying website visitors.How can Company A provide only paid subscribers the ability to download a premier content file in the S3 bucket?

Generate a pre-signed object URL for the premier content file when a paid subscriber requests a download

Apply a bucket policy that grants anonymous users to download the content from the S3 bucket

Generate a pre-signed object URL for the premier content file when a paid subscriber requests a download

Add a bucket policy that requires Multi-Factor Authentication for requests to access the S3 bucket objects

Enable server-side encryption on the S3 bucket for data protection against the non-paying website visitors

Which of the following is an example of a good DynamoDB hash key schema for provisioned throughput efficiency?

User ID, where the application has many different users.

Status Code where most status codes are the same

Device ID, where one is by far more popular than all the others.

Game Type, where there are three possible game types

An application stores payroll information nightly in DynamoDB for a large number of employees across hundreds of offices. Item attributes consist of individual name, office identifier, and cumulative daily hours. Managers run reports for ranges of names working in their office. One query is. "Return all Items in this office for names starting with A through E". Which table configuration will result in the lowest impact on provisioned throughput for this query?

Configure the table to have a range index on the name attribute, and a hash index on the office identifier

Configure the table to have a hash index on the name attribute, and a range index on the office identifier

Configure the table to have a range index on the name attribute, and a hash index on the office identifier

Configure a hash index on the name attribute and no range index

Configure a hash index on the office Identifier attribute and no range index

What is one key difference between an Amazon EBS-backed and an instance-store backed instance?

Amazon EBS-backed instances can be stopped and restarted

Virtual Private Cloud requires EBS backed instances

Amazon EBS-backed instances can be stopped and restarted

Auto scaling requires using Amazon EBS-backed instances.

Instance-store backed instances can be stopped and restarted.

How can you secure data at rest on an EBS volume?

Use an encrypted file system on top of the BBS volume.

Attach the volume to an instance using EC2's SSL interface.

Write the data randomly instead of sequentially.

Use an encrypted file system on top of the BBS volume.

Encrypt the volume using the S3 server-side encryption service.

Create an IAM policy that restricts read and write access to the volume.

Which of the following statements about SWF are true? Choose 3 answers

SWF tasks are assigned once and never duplicated

SWF workflow executions can last up to a year

SWF uses deciders and workers to complete tasks

SWF tasks are assigned once and never duplicated

SWF requires an S3 bucket for workflow storage

SWF workflow executions can last up to a year

SWF triggers SNS notifications on task assignment

SWF uses deciders and workers to complete tasks

SWF requires at least 1 EC2 instance per domain

A startup s photo-sharing site is deployed in a VPC. An ELB distributes web traffic across two subnets. ELB session stickiness is configured to use the AWS-generated session cookie, with a session TTL of 5 minutes. The webserver Auto Scaling Group is configured as: min-size=4, max-size=4. The startups preparing for a public launch, by running load-testing software installed on a single EC2 instance running in us-west-2 a. After 60 minutes of load-testing, the webserver logs show:Which recommendations can help ensure load-testing HTTP requests are evenly distributed across the four webservers? Choose 2 answers

Use a 3rd-party load-testing service which offers globally-distributed test clients.

Configure ELB session stickiness to use the app-specific session cookie.

Launch and run the load-tester EC2 instance from us-east-1 instead.

Re-configure the load-testing software to re-resolve DNS for each web request.

Use a 3rd-party load-testing service which offers globally-distributed test clients.

Configure ELB and Auto Scaling to distribute across us-west-2a and us-west-2c.

Configure ELB session stickiness to use the app-specific session cookie.

How is provisioned throughput affected by the chosen consistency model when reading data from a DynamoDB table?

Strongly consistent reads use more throughput than eventually consistent reads.

Strongly consistent reads use the same amount of throughput as eventually consistent reads

Strongly consistent reads use more throughput than eventually consistent reads.

Strongly consistent reads use less throughput than eventually consistent reads

Strongly consistent reads use variable throughput depending on read activity

How can software determine the public and private IP addresses of the Amazon EC2 instance that it is running on?

Query the local instance metadata.

Query the appropriate Amazon CloudWatch metric.

Use ipconfig or ifconfig command.

Query the local instance userdata.

Query the local instance metadata.

EC2 instances are launched from Amazon Machine images (AMIs). A given public AMI can:

only be used to launch EC2 instances in the same AWS region as the AMI is stored.

be used to launch EC2 Instances in any AWS region.

only be used to launch EC2 instances in the same country as the AMI is stored.

only be used to launch EC2 instances in the same AWS region as the AMI is stored.

only be used to launch EC2 instances in the same AWS availability zone as the AMI is stored

Which EC2 API call would you use to retrieve a list of Amazon Machine Images (AMIs)?

You cannot retrieve a list of AMIs as there are over 10,000 AMIs

In AWS, which security aspects are the customer’s responsibility? Choose 4 answers

Life-cycle management of IAM credentials

Security Group and ACL (Access Control List) settings

Encryption of EBS (Elastic Block Storage) volumes

Patch management on the EC2 instance’s operating system

Life-cycle management of IAM credentials

Decommissioning storage devices

Security Group and ACL (Access Control List) settings

Encryption of EBS (Elastic Block Storage) volumes

Controlling physical access to compute resources

Patch management on the EC2 instance’s operating system

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

Set a smaller page size for the scan

Define a range index on the table

Prewarm the table by updating all items

Company D is running their corporate website on Amazon S3 accessed from http//www.companyd.com. Their marketing team has published new web fonts to a separate S3 bucket accessed by the S3 endpoint https://s3-us-west- 1.amazonaws.com/cdfonts. While testing the new web fonts, Company D recognized the web fonts are being blocked by the browser. What should Company D do to prevent the web fonts from being blocked by the browser?

Configure the cdfonts bucket to allow cross-origin requests by creating a CORS configuration

Enable versioning on the cdfonts bucket for each web font

Create a policy on the cdfonts bucket to enable access to everyone

Add the Content-MD5 header to the request for webfonts in the cdfonts bucket from the website

Configure the cdfonts bucket to allow cross-origin requests by creating a CORS configuration

Amazon DVA-C01 Practice Test 1 - Free Online Exam Prep & Questions

Company C is currently hosting their corporate site in an Amazon S3 bucket with Static Website Hosting enabled. Currently, when visitors go to http://www.companyc.com the index.html page is returned. Company C now would like a new page welcome.html to be returned when a visitor enters http://www.companyc.com in the browser.

Which of the following steps will allow Company C to meet this requirement? Choose 2 answers

A.

Upload an html page named welcome.html to their S3 bucket

B.

Create a welcome subfolder in their S3 bucket

C.

Set the Index Document property to welcome.html

D.

Move the index.html page to a welcome subfolder

E.

Set the Error Document property to welcome.html

Amazon DVA-C01 Practice Test 1

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Amazon DVA-C01 Practice Tests

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