100% Correct AWS-Certified-Developer-Associate Dumps 2021

NEW QUESTION 1
Which EC2 API call would you use to retrieve a list of Amazon Machine Images (AMIs)?

• A. Descnbelnstances
• B. DescribeAMIs
• C. Describelmages
• D. GetAMIs
• E. You cannot retrieve a list of AMIs as there are over 10,000 AMIs

Answer: E

NEW QUESTION 2
Which one of the following statements is NOT an advantage of DyanamoDB being built on Solid State Drives:

• A. serve high-scale request workloads
• B. low request pricing
• C. high I/O performance of WebApp on EC2 instance
• D. low-latency response times

Answer: C

Explanation: In DynamoDB, SSDs help achieve design goals of predictable low-latency response times for storing and accessing data at any scale. The high I/O performance of SSDs also enables to serve high-scale request workloads cost efficiently, and to pass this efficiency along in low request pricing.
Reference: http://aws.amazon.com/dynamodb/faqs/

NEW QUESTION 3
A user has enabled the automated backup, but not specified the backup window. What will RDS do in this case?

• A. Will throw an error on instance launch
• B. RDS will take 3 AM — 3:30 AM as the default window
• C. RDS assigns a random time period based on the region
• D. Will not allow to launch a DB instance

Answer: C

Explanation: If the user does not specify a preferred backup window while enabling an automated backup, Amazon RDS assigns a default 30-minute backup window which is selected at random from an 8-hour block of
time per region. Reference:
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Overview.BackingUpAndRestoringAmazonR DSInstances.htmI

NEW QUESTION 4
A user is launching an instance with EC2. Which of the below mentioned options does the user need to consider before launching an instance?

• A. Select the region where the instance is being launched.
• B. Select the instance type.
• C. All the options listed should be considered..
• D. Select the OS of the AM

Answer: C

Explanation: Regarding Amazon EC2, when launching an instance, the user needs to select the region the instance would be launched from. While launching, the user needs to plan for the instance type and the OS of the instance.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-Iaunch-instance_|inux.htmI

NEW QUESTION 5
A user has launched an RDS instance. The user has created 3 databases on the same server. What can the maximum size be for each database?

• A. The size of each DB cannot be more than 3 TB
• B. It is not possible to have more than one DB on a single instance
• C. The total instance storage size cannot be more than 3 TB
• D. The size of each DB cannot be more than 1 TB

Answer: C

Explanation: The AWS RDS DB instance is an isolated DB environment provided by AWS in which the user can create more than 1 database. The maximum size ofthe instance should be between 5 GB and 3 TB. The size of each DB can be anything in this range.
Reference: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Welcome.html

NEW QUESTION 6
A user has created a blank EBS volume in the US-East-1 region. The user is unable to attach the volume to a running instance in the same region. What could be the possible reason for this?

• A. The instance must be in a running stat
• B. It is required to stop the instance to attach volume
• C. The AZ for the instance and volume are different
• D. The instance is from an instance store backed AMI
• E. The instance has enabled the volume attach protection

Answer: B

Explanation: An EBS volume provides persistent data storage. The user can attach a volume to any instance provided they are both in the same AZ. Even if they are in the same region but in a different AZ, it will not be able to attach the volume to that instance.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AmazonEBS.htmI

NEW QUESTION 7
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/

NEW QUESTION 8
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 9
After launching an instance that you intend to serve as a NAT (Network Address Translation) device in a public subnet you modify your route tables to have the NAT device be the target of internet bound traffic of your private subnet. When you try and make an outbound connection to the Internet from an instance in the private subnet, you are not successful.
Which of the following steps could resolve the issue?

• A. Attaching a second Elastic Network interface (ENI) to the NAT instance, and placing it in the private subnet
• B. Attaching a second Elastic Network Interface (ENI) to the instance in the private subnet, and placing it in the public subnet
• C. Disabling the Source/Destination Check attribute on the NAT instance
• D. Attaching an Elastic IP address to the instance in the private subnet

Answer: C

NEW QUESTION 10
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 11
In AWS Elastic Beanstalk, you can update your deployed application even while it is part of a running environment. For a Java application, you can also use to update your deployed application.

• A. the AWS Toolkit for Eclipse
• B. the AWS Toolkit for Visual Studio
• C. the AWS Toolkit for JVM
• D. the AWS Toolkit for Netbeans

Answer: A

Explanation: In AWS Elastic Beanstalk, you can update your deployed application, even while it is part of a running environment. For a Java application, you can also use the AWS Toolkit for Eclipse to update your deployed application.
Reference: http://docs.aws.amazon.com/elasticbeanstaIk/latest/dg/GettingStarted.WaIkthrough.htmI

NEW QUESTION 12
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/

NEW QUESTION 13
A user has configured a website and launched it using the Apache web server on port 80. The user is using ELB with the EC2 instances for Load Balancing. What should the user do to ensure that the EC2 instances accept requests only from ELB?

• A. Open the port for an ELB static IP in the EC2 security group
• B. Configure the security group of EC2, which allows access to the ELB source security group
• C. Configure the EC2 instance so that it only listens on the ELB port
• D. Configure the security group of EC2, which allows access only to the ELB listener

Answer: B

Explanation: When a user is configuring ELB and registering the EC2 instances with it, ELB will create a source security group. If the user wants to allow traffic only from ELB, he should remove all the rules set for the other requests and open the port only for the ELB source security group.
Reference:
http://docs.aws.amazon.com/EIasticLoadBaIancing/latest/DeveIoperGuide/using-elb-security-groups.htmI

NEW QUESTION 14
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 15
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?

• A. None, Simple Storage Service objects are limited to 5 GB
• B. Use the multi-part upload API for this object
• C. Use the large object upload API for this object
• D. Contact support to increase your object size limit
• E. Upload to a different region

Answer: B

NEW QUESTION 16
A user has launched an EC2 instance and installed a website with the Apache webserver. The webserver is running but the user is not able to access the website from the internet. What can be the possible reason for this failure?

• A. The security group of the instance is not configured properly.
• B. The instance is not configured with the proper key-pairs.
• C. The Apache website cannot be accessed from the internet.
• D. Instance is not configured with an elastic I

Answer: A

Explanation: In Amazon Web Services, when a user has configured an instance with Apache, the user needs to ensure that the ports in the security group are opened as configured in Apache config. E.g. If Apache is running on port 80, the user should open port 80 in the security group.
Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-network-security.html

NEW QUESTION 17
ExamKiIIer (with AWS account ID 111122223333) has created 50 IAM users for its orgAMzation’s employees. What will be the AWS console URL for these associates?

• A. https:// 111122223333.signin.aws.amazon.com/conso|e/
• B. https:// signin.aws.amazon.com/consoIe/
• C. https://signin.aws.amazon.com/111122223333/conso|e/
• D. https://signin.aws.amazon.com/console/111122223333/

Answer: A

Explanation: When an orgAMzation is using AWS IAM for creating various users and manage their access rights, the IAM user cannot use the login URL http://aws.amazon.com/console to access AWS management console. The console login URL for the IAM user will have AWS account ID of that orgAMzation to identify the IAM user belongs to particular account. The AWS console login URL for the IAM user will be https://
<AWS_Account_|D>.signin.aws.amazon.com/consoIe/. In this case it will be https:// 111122223333.signin.aws.amazon.com/consoIe/
Reference: http://docs.aws.amazon.com/IAM/latest/UserGuide/AccountAIias.html

NEW QUESTION 18
An orgAMzation has 10 departments. The orgAMzation wants to track the AWS usage of each department. Which of the below mentioned options meets the requirement?

• A. Setup IAM groups for each department and track their usage
• B. Create separate accounts for each department, but use consolidated billing for payment and tracking
• C. Create separate accounts for each department and track them separately
• D. Setup IAM users for each department and track their usage

Answer: B

Explanation: The cost of an IAM user or groups can never be tracked separately for the purpose of billing. The best solution in this case is to create a separate account for each department and use consolidated billing. Reference: http://docs.aws.amazon.com/IAM/|atest/UserGuide/|AM_|ntroduction.htmI

NEW QUESTION 19
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