Under a single AWS account, you have set up an Auto Scaling group with a maximum capacity of 50 Amazon Elastic Compute Cloud (Amazon EC2) instances in us-west-2. When you scale out, however, it only increases to 20 Amazon EC2 instances. What is the likely cause?

• Auto Scaling has a hard limit of 20 Amazon EC2 instances.

• If not specified, the Auto Scaling group maximum capacity defaults to 20 Amazon EC2 instances.

• The Auto Scaling group desired capacity is set to 20, so Auto Scaling stopped at 20 Amazon EC2 instances.

• You have exceeded the default Amazon EC2 instance limit of 20 per region.

Elastic Load Balancing allows you to distribute traffic across which of the following?

• Only within a single Availability Zone

• Multiple Availability Zones within a region

• Multiple Availability Zones within and between regions

• Multiple Availability Zones within and between regions and on-premises virtualized instances running OpenStack Multiple Availability Zones within and between regions and on-premises virtualized instances running OpenStack

Amazon CloudWatch offers which types of monitoring plans? (Choose 2 answers)

• Basic

• Detailed

• Diagnostic

• Precognitive

• Retroactive

An Amazon Elastic Compute Cloud (Amazon EC2) instance in an Amazon Virtual Private Cloud (Amazon VPC) subnet can send and receive traffic from the Internet when which of the following conditions are met? (Choose 3 answers)

• Network Access Control Lists (ACLs) and security group rules disallow all traffic except relevant Internet traffic

• Network ACLs and security group rules allow relevant Internet traffic.

• Attach an Internet Gateway (IGW) to the Amazon VPC and create a subnet route table to send all non-local traffic to that IGW.

• Attach a Virtual Private Gateway (VPG) to the Amazon VPC and create subnet routes to send all non-local traffic to that VPG.

• The Amazon EC2 instance has a public IP address or Elastic IP (EIP) address.

If you launch five Amazon Elastic Compute Cloud (Amazon EC2) instances in an Amazon Virtual Private Cloud (Amazon VPC) without specifying a security group, the instances will be launched into a default security group that provides which of the following? (Choose 3 answers)

• The five Amazon EC2 instances can communicate with each other.

• The five Amazon EC2 instances cannot communicate with each other.

• All inbound traffic will be allowed to the five Amazon EC2 instances.

• No inbound traffic will be allowed to the five Amazon EC2 instances.

• All outbound traffic will be allowed from the five Amazon EC2 instances.

Your company wants to host its secure web application in AWS. The internal security policies consider any connections to or from the web server as insecure and require application data protection. What approaches should you use to protect data in transit for the application? (Choose 2 answers)

• Use BitLocker to encrypt data.

• Use HTTPS with server certificate authentication.

• Use an AWS Identity and Access Management (IAM) role.

• Use Secure Sockets Layer (SSL)/Transport Layer Security (TLS) for database connection.

• Use XML for data transfer from client to server. Use XML for data transfer from client to server.

You have an application that will run on an Amazon Elastic Compute Cloud (Amazon EC2) instance. The application will make requests to Amazon Simple Storage Service (Amazon S3) and Amazon DynamoDB. Using best practices, what type of AWS Identity and Access Management (IAM) identity should you create for your application to access the identified services?

• IAM role

• IAM user

• IAM group

• IAM directory

When a request is made to an AWS Cloud service, the request is evaluated to decide whether it should be allowed or denied. The evaluation logic follows which of the following rules? (Choose 3 answers)

• An explicit allow overrides any denies.

• By default, all requests are denied.

• An explicit deny overrides any allows.

• By default, all requests are allowed.

What is the data processing engine behind Amazon Elastic MapReduce (Amazon EMR)?

• Apache Hadoop

• Apache Hive

• Apache Pig

• Apache HBase

What type of AWS Elastic Beanstalk environment tier provisions resources to support a web application that handles background processing tasks?

• Web server environment tier

• Worker environment tier

• Database environment tier

• Batch environment tier