Which of the design patterns below should they use?
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?
Which service should you use?
Your company plans to host a large donation website on Amazon Web Services (AWS). You anticipate a large
and undetermined amount of traffic that will create many database writes. To be certain that you do not drop
any writes to a database hosted on AWS. Which service should you use?
Which of these options would allow you to encrypt your …
Your company policies require encryption of sensitive data at rest. You are considering the possible options for
protecting data while storing it at rest on an EBS data volume, attached to an EC2 instance. Which of these
options would allow you to encrypt your data at rest? (Choose 3 answers)
What is the problem and a valid solution?
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 0 device, and each Provisioned IOPS volume is provisioned with 4,000 IOPS
(4000 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?
how do you build the database architecture in order to …
Your company has HQ in Tokyo and branch offices all over the world and is using a logistics software with a
multi-regional deployment on AWS in Japan, Europe and USA. The logistic software has a 3-tier architecture
and currently uses MySQL 5.6 for data persistence. Each region has deployed its own database
In the HQ region you run an hourly batch process reading data from every region to compute cross-regional
reports that are sent by email to all offices this batch process must be completed as fast as possible to quickly
optimize logistics how do you build the database architecture in order to meet the requirements’?
Which setup win meet the requirements?
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?
How would you do this while minimizing costs?
Your company currently has a 2-tier web application running in an on-premises data center. You have
experienced several infrastructure failures in the past two months resulting in significant financial losses. Your
CIO is strongly agreeing to move the application to AWS. While working on achieving buy-in from the other
company executives, he asks you to develop a disaster recovery plan to help improve Business continuity in the
short term. He specifies a target Recovery Time Objective (RTO) of 4 hours and a Recovery Point Objective
(RPO) of 1 hour or less. He also asks you to implement the solution within 2 weeks. Your database is 200GB in
size and you have a 20Mbps Internet connection. How would you do this while minimizing costs?
Which architecture outlined below win meet the initial …
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?
What is the way to configure AWS Direct connect for acc…
You are implementing AWS Direct Connect. You intend to use AWS public service end points such as Amazon
S3, across the AWS Direct Connect link. You want other Internet traffic to use your existing link to an Internet
Service Provider.
What is the way to configure AWS Direct connect for access to services such as Amazon S3?
What database implementation would better fit this scen…
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?