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Question 243 of 249 from exam PCA: Professional Cloud Architect


QUESTION 243 OF 249 FROM EXAM PCA: PROFESSIONAL CLOUD ARCHITECT




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QUESTION

Dress4Win is a web-based company that helps their users organize and manage
their personal wardrobe using a website and mobile application.

The company also cultivates an active social network that connects their users
with designers and retailers.

They monetize their services through advertising, e-commerce, referrals, and a
premium app model.

Company Background - Dress4Win's application has grown from a few servers in the
founder's garage to several hundred servers and appliances in a collocated data
center.

However, the capacity of their infrastructure is now insufficient for the
application's rapid growth.

Because of this growth and the company's desire to innovate faster, Dress4Win is
committing to a full migration to a public cloud.

Solution Concept - For the first phase of their migration to the cloud,
Dress4Win is considering moving their development and test environments.

They are also considering building a disaster recovery site, because their
current infrastructure is at a single location.

They are not sure which components of their architecture they can migrate as is
and which components they need to change before migrating them.

Existing Technical Environment - The Dress4Win application is served out of a
single data center location.Databases: - MySQL - user data, inventory, static
data - Redis - metadata, social graph, cachingApplication servers: - Tomcat -
Java micro-services - Nginx - static content - Apache Beam - Batch
processingStorage appliances: - iSCSI for VM hosts - Fiber channel SAN - MySQL
databases - NAS - image storage, logs, backupsApache Hadoop/Spark servers: -
Data analysis - Real-time trending calculationsMQ servers: - Messaging - Social
notifications - EventsMiscellaneous servers: - Jenkins, monitoring, bastion
hosts, security scanners Business Requirements - Build a reliable and
reproducible environment with scaled parity of production.



Improve security by defining and adhering to a set of security and Identity and
Access Management (IAM) best practices for cloud.Improve business agility and
speed of innovation through rapid provisioning of new resources.Analyze and
optimize architecture for performance in the cloud.Migrate fully to the cloud if
all other requirements are met.

Technical Requirements -Evaluate and choose an automation framework for
provisioning resources in cloud.Support failover of the production environment
to cloud during an emergency.Identify production services that can migrate to
cloud to save capacity.Use managed services whenever possible.Encrypt data on
the wire and at rest.Support multiple VPN connections between the production
data center and cloud environment.

CEO Statement - Our investors are concerned about our ability to scale and
contain costs with our current infrastructure.

They are also concerned that a new competitor could use a public cloud platform
to offset their up-front investment and freeing them to focus on developing
better features.

CTO Statement - We have invested heavily in the current infrastructure, but much
of the equipment is approaching the end of its useful life.

We are consistently waiting weeks for new gear to be racked before we can start
new projects.

Our traffic patterns are highest in the mornings and weekend evenings; during
other times, 80% of our capacity is sitting idle.

CFO Statement - As of a future evaluation and optimizing for performance in the
cloud, Dresss4Win wants to distribute its system architecture to multiple
locations when Google cloud platform.

Which approach should they use?


ANSWERS

A. Use regional managed instance groups and a global load balancer to increase
performance because the regional managed instance group can grow instances in
each region separately based on traffic.
B. Use a global load balancer with a set of virtual machines that forward the
requests to a closer group of virtual machines managed by your operations team.
C. Use regional managed instance groups and a global load balancer to increase
reliability by providing automatic failover between zones in different regions.
D. Use a global load balancer with a set of virtual machines that forward the
requests to a closer group of virtual machines as part of a separate managed
instance groups.
Show Answer


EXPLANATIONS

Click on the arrows to vote for the correct answer

A. B. C. D.

A.


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