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?

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?

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?

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
two.)

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’?

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 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?

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 have recently joined a startup company building sensors to measure street noise and air quality in urban
areas. The company has been running a pilot deployment of around 100 sensors for 3 months each sensor
uploads 1KB of sensor data every minute to a backend hosted on AWS.
During the pilot, you measured a peak or 10 IOPS on the database, and you stored an average of 3GB of
sensor data per month in the database.
The current deployment consists of a load-balanced auto scaled Ingestion layer using EC2 instances and a
PostgreSQL RDS database with 500GB standard storage.
The pilot is considered a success and your CEO has managed to get the attention or some potential investors.
The business plan requires a deployment of at least 100K sensors which needs to be supported by the
backend. You also need to store sensor data for at least two years to be able to compare year over year
Improvements.
To secure funding, you have to make sure that the platform meets these requirements and leaves room for
further scaling. Which setup win meet the requirements?

You have launched an EC2 instance with four (4) 500 GB EBS Provisioned IOPS volumes attached The EC2
Instance Is EBS-Optimized and supports 500 Mbps throughput between EC2 and EBS The two EBS volumes
are configured as a single RAID o device, and each Provisioned IOPS volume is provisioned with 4.000 IOPS
(4 000 16KB reads or writes) for a total of 16.000 random IOPS on the instance The EC2 Instance initially
delivers the expected 16 000 IOPS random read and write performance Sometime later in order to increase the
total random I/O performance of the instance, you add an additional two 500 GB EBS Provisioned IOPS
volumes to the RAID Each volume Is provisioned to 4.000 IOPs like the original four for a total of 24.000 IOPS
on the EC2 instance Monitoring shows that the EC2 instance CPU utilization increased from 50% to 70%. but
the total random IOPS measured at the instance level does not increase at all.
What is the problem and a valid solution?