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?

You need a persistent and durable storage to trace call activity of an IVR (Interactive Voice Response) system.
Call duration is mostly in the 2-3 minutes timeframe. Each traced call can be either active or terminated. An
external application needs to know each minute the list of currently active calls, which are usually a few
calls/second. Put once per month there is a periodic peak up to 1000 calls/second for a few hours The system
is open 24/7 and any downtime should be avoided. Historical data is periodically archived to files. Cost saving
is a priority for this project.
What database implementation would better fit this scenario, keeping costs as low as possible?

A web design company currently runs several FTP servers that their 250 customers use to upload and
download large graphic files They wish to move this system to AWS to make it more scalable, but they wish to
maintain customer privacy and Keep costs to a minimum.
What AWS architecture would you recommend?

You have been asked to design the storage layer for an application. The application requires disk performance
of at least 100,000 IOPS in addition, the storage layer must be able to survive the loss of an individual disk. EC2
instance, or Availability Zone without any data loss. The volume you provide must have a capacity of at least 3
TB.Which of the following designs will meet these objectives’?

You would like to create a mirror image of your production environment in another region for disaster
recovery purposes. Which of the following AWS resources do not need to be recreated in the second region?
(Choose 2 answers)

Your company runs a customer facing event registration site This site is built with a 3-tier architecture with
web and application tier servers and a MySQL database The application requires 6 web tier servers and 6
application tier servers for normal operation, but can run on a minimum of 65% server capacity and a single
MySQL database. When deploying this application in a region with three availability zones (AZs) which
architecture provides high availability?

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?

You are responsible for a legacy web application whose server environment is approaching end of life You
would like to migrate this application to AWS as quickly as possible, since the application environment
currently has the following limitations:
The VM’s single 10GB VMDK is almost full

Me virtual network interface still uses the 10Mbps driver, which leaves your 100Mbps WAN connection
completely underutilized
It is currently running on a highly customized. Windows VM within a VMware environment:
You do not have me installation media
This is a mission critical application with an RTO (Recovery Time Objective) of 8 hours. RPO (Recovery Point
Objective) of 1 hour. How could you best migrate this application to AWS while meeting your business
continuity requirements?

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?

Refer to the architecture diagram above of a batch processing solution using Simple Queue Service (SOS) to set
up a message queue between EC2 instances which are used as batch processors Cloud Watch monitors the
number of Job requests (queued messages) and an Auto Scaling group adds or deletes batch servers
automatically based on parameters set in Cloud Watch alarms. You can use this architecture to implement
which of the following features in a cost effective and efficient manner?