You are responsible for a web application that consists of an Elastic Load Balancing (ELB) load balancer in
front of an Auto Scaling group of Amazon Elastic Compute Cloud (EC2) instances. For a recent deployment of
a new version of the application, a new Amazon Machine Image (AMI) was created, and the Auto Scaling group
was updated with a new launch configuration that refers to this new AMI. During the deployment, you received
complaints from users that the website was responding with errors. All instances passed the ELB health
checks.
What should you do in order to avoid errors for future deployments? (Choose 2 answer)

You are designing a connectivity solution between on-premises infrastructure and Amazon VPC. Your servers
on-premises will be communicating with your VPC instances. You will be establishing IPSec tunnels over the
Internet You will be using VPN gateways, and terminating the IPSec tunnels on AWS supported customer
gateways.
Which of the following objectives would you achieve by implementing an IPSec tunnel as outlined above?
Choose 4 answers

A company is building a voting system for a popular TV show, viewers win watch the performances then visit
the show’s website to vote for their favorite performer. It is expected that in a short period of time after the
show has finished the site will receive millions of visitors. The visitors will first login to the site using their
Amazon.com credentials and then submit their vote. After the voting is completed the page will display the vote
totals. The company needs to build the site such that can handle the rapid influx of traffic while maintaining
good performance but also wants to keep costs to a minimum. Which of the design patterns below should they
use?

You are designing a personal document-archiving solution for your global enterprise with thousands of
employee. Each employee has potentially gigabytes of data to be backed up in this archiving solution. The
solution will be exposed to the employees as an application, where they can just drag and drop their files to the
archiving system. Employees can retrieve their archives through a web interface. The corporate network has
high bandwidth AWS Direct Connect connectivity to AWS.
You have a regulatory requirement that all data needs to be encrypted before being uploaded to the cloud.
How do you implement this in a highly available and cost-efficient way?

You are migrating a legacy client-server application to AWS. The application responds to a specific DNS
domain (e.g. www.example.com) and has a 2-tier architecture, with multiple application servers and a database
server. Remote clients use TCP to connect to the application servers. The application servers need to know the
IP address of the clients in order to function properly and are currently taking that information from the TCP
socket. A Multi-AZ RDS MySQL instance will be used for the database.
During the migration you can change the application code, but you have to file a change request.
How would you implement the architecture on AWS in order to maximize scalability and high availability?

You are designing an SSUTLS solution that requires HTTPS clients to be authenticated by the Web server
using client certificate authentication. The solution must be resilient.
Which of the following options would you consider for configuring the web server infrastructure? (Choose 2
answers)

Your company produces customer commissioned one-of-a-kind skiing helmets combining nigh fashion with
custom technical enhancements Customers can show off their Individuality on the ski slopes and have access
to head-up-displays. GPS rear-view cams and any other technical innovation they wish to embed in the helmet.
The current manufacturing process is data rich and complex including assessments to ensure that the custom
electronics and materials used to assemble the helmets are to the highest standards Assessments are a
mixture of human and automated assessments you need to add a new set of assessment to model the failure
modes of the custom electronics using GPUs with CUDA, across a cluster of servers with low latency
networking.What architecture would allow you to automate the existing process using a hybrid approach and ensure that
the architecture can support the evolution of processes over time?

You have deployed a three-tier web application in a VPC with a CIDR block of 10.0.0.0/28 You initially deploy
two web servers, two application servers, two database servers and one NAT instance tor a total of seven EC2
instances The web. Application and database servers are deployed across two availability zones (AZs). You
also deploy an ELB in front of the two web servers, and use Route53 for DNS Web (raffle gradually increases in
the first few days following the deployment, so you attempt to double the number of instances in each tier of the
application to handle the new load unfortunately some of these new instances fail to launch.
Which of the following could be the root caused? (Choose 2 answers)

You require the ability to analyze a customer’s clickstream data on a website so they can do behavioral
analysis. Your customer needs to know what sequence of pages and ads their customer clicked on. This data
will be used in real time to modify the page layouts as customers click through the site to increase stickiness
and advertising click-through. Which option meets the requirements for captioning and analyzing this data?

Your company hosts a social media website for storing and sharing documents. The web application allows
user to upload large files while resuming and pausing the upload as needed. Currently, files are uploaded to
your PHP front end backed by Elastic load Balancing and an autoscaling fleet of Amazon Elastic Compute
Cloud (EC2) instances that scale upon average of bytes received (NetworkIn). After a file has been uploaded, it
is copied to Amazon Simple Storage Service (S3). Amazon EC2 instances use an AWS Identity and Access
Management (IAM) role that allows Amazon S3 uploads. Over the last six months, your user base and scale
have increased significantly, forcing you to increase the Auto Scaling group’s Max parameter a few times. Your
CFO is concerned about rising costs and has asked you to adjust the architecture where needed to better
optimize costs.
Which architecture change could you introduce to reduce costs and still keep your web application secure and
scalable?