A company has a workflow that sends video files from their on-premise system to AWS for
transcoding. They use EC2 worker instances that pull transcoding jobs from SQS. Why is
SQS an appropriate service for this scenario?

What is a placement group?

A client application requires operating system privileges on a relational database server. What
is an appropriate configuration for a highly available database architecture?

A customer wants to leverage Amazon Simple Storage Service (S3) and Amazon Glacier as
part of their backup and archive infrastructure. The customer plans to use third-party software
to support this integration. Which approach will limit the access of the third party software to
only the Amazon S3 bucket named “company-backup”?

For which of the following use cases are Simple Workflow Service (SWF) and Amazon EC2
an appropriate solution? Choose 2 answers

An instance is launched into a VPC subnet with the network ACL configured to allow all
inbound traffic and deny all outbound traffic. The instance’s security group is configured to
allow SSH from any IP address and deny all outbound traffic. What changes need to be made
to allow SSH access to the instance?

How can the domain’s zone apex, for example, “myzoneapexdomain.com”, be pointed
towards an Elastic Load Balancer?

You launch an Amazon EC2 instance without an assigned AVVS identity and Access
Management (IAM) role. Later, you decide that the instance should be running with an IAM
role. Which action must you take in order to have a running Amazon EC2 instance with an
IAM role assigned to it?

You have launched an Amazon Elastic Compute Cloud (EC2) instance into a public subnet
with a primary private IP address assigned, an internet gateway is attached to the VPC, and
the public route table is configured to send all Internet-based traffic to the Internet gateway.
The instance security group is set to allow all outbound traffic but cannot access the internet.
Why is the Internet unreachable from this instance?

A company wants to implement their website in a virtual private cloud (VPC). The web tier will
use an Auto Scaling group across multiple Availability Zones (AZs). The database will use
Multi-AZ RDS MySQL and should not be publicly accessible. ‘What is the minimum number of
subnets that need to be configured in the VPC?