Your website is serving on-demand training videos to your workforce. Videos are uploaded monthly in high
resolution MP4 format. Your workforce is distributed globally often on the move and using company-provided
tablets that require the HTTP Live Streaming (HLS) protocol to watch a video. Your company has no video
transcoding expertise and it required you may need to pay for a consultant.
How do you implement the most cost-efficient architecture without compromising high availability and quality of
video delivery’?

You deployed your company website using Elastic Beanstalk and you enabled log file rotation to S3. An Elastic
Map Reduce job is periodically analyzing the logs on S3 to build a usage dashboard that you share with your
CIO. You recently improved overall performance of the website using Cloud Front for dynamic content delivery
and your website as the origin
After this architectural change, the usage dashboard shows that the traffic on your website dropped by an order
of magnitude. How do you fix your usage dashboard’?

Your application is using an ELB in front of an Auto Scaling group of web/application servers deployed across
two AZs and a Multi-AZ RDS Instance for data persistence.
The database CPU is often above 80% usage and 90% of I/O operations on the database are reads. To
improve performance you recently added a single-node Memcached ElastiCache Cluster to cache frequent DB
query results. In the next weeks the overall workload is expected to grow by 30%.
Do you need to change anything in the architecture to maintain the high availability or the application with the
anticipated additional load’* Why?

An International company has deployed a multi-tier web application that relies on DynamoDB in a single region
For regulatory reasons they need disaster recovery capability In a separate region with a Recovery Time
Objective of 2 hours and a Recovery Point Objective of 24 hours They should synchronize their data on a
regular basis and be able to provision me web application rapidly using CloudFormation.
The objective is to minimize changes to the existing web application, control the throughput of DynamoDB used
for the synchronization of data and synchronize only the modified elements.
Which design would you choose to meet these requirements?

A customer has established an AWS Direct Connect connection to AWS. The link is up and routes are being
advertised from the customer’s end, however the customer is unable to connect from EC2 instances inside its
VPC to servers residing in its datacenter.
Which of the following options provide a viable solution to remedy this situation? (Choose 2 answers)

An enterprise wants to use a third-party SaaS application. The SaaS application needs to have access to issueseveral API commands to discover Amazon EC2 resources running within the enterprise’s account The
enterprise has internal security policies that require any outside access to their environment must conform to
the principles of least privilege and there must be controls in place to ensure that the credentials used by the
SaaS vendor cannot be used by any other third party. Which of the following would meet all of these
conditions?

An administrator is using Amazon CloudFormation to deploy a three tier web application that consists of a web
tier and application tier that will utilize Amazon DynamoDB for storage when creating the CloudFormation
template which of the following would allow the application instance access to the DynamoDB tables without
exposing API credentials?

You are developing a new mobile application and are considering storing user preferences in AWS.2w This
would provide a more uniform cross-device experience to users using multiple mobile devices to access the
application. The preference data for each user is estimated to be 50KB in size Additionally 5 million customers
are expected to use the application on a regular basis. The solution needs to be cost-effective, highly available,
scalable and secure, how would you design a solution to meet the above requirements?

Your company is in the process of developing a next generation pet collar that collects biometric information to
assist families with promoting healthy lifestyles for their pets Each collar will push 30kb of biometric data In
JSON format every 2 seconds to a collection platform that will process and analyze the data providing health
trending information back to the pet owners and veterinarians via a web portal Management has tasked you to
architect the collection platform ensuring the following requirements are met.
Provide the ability for real-time analytics of the inbound biometric data
Ensure processing of the biometric data is highly durable. Elastic and parallel
The results of the analytic processing should be persisted for data mining
Which architecture outlined below win meet the initial requirements for the collection platform?

To serve Web traffic for a popular product your chief financial officer and IT director have purchased 10 ml
large heavy utilization Reserved Instances (RIs) evenly spread across two availability zones: Route 53 is used
to deliver the traffic to an Elastic Load Balancer (ELB). After several months, the product grows even more
popular and you need additional capacity As a result, your company purchases two C3.2xlarge medium
utilization Ris You register the two c3 2xlarge instances with your ELB and quickly find that the ml large
instances are at 100% of capacity and the c3 2xlarge instances have significant capacity that’s unused Which
option is the most cost effective and uses EC2 capacity most effectively?