Just a place to put
some notes on the “AWS Certified Solutions Architect -
Associate (New!)” course from https://linuxacademy.com
Essential Certified
Solutions Architect Terminology
High Availability
refers to systems that are durable and likely to operate continuously without
failure for a long time.
For a solutions
architect this means making sure your AWS application is always available when
a user/customer tries to access it.
Fault Tolerance is
the property that enables a system to continue operating properly in the event
of the failure of one or more of its components.
A fault tolerant
AWS application would be one where one of its web servers can fail, and it still
serves traffic to visitors (even repair itself.)
Scalability is the
ability of a system to easily increase in size and capacity in a cost effective
way (usually based on usage demand.)
Elasticity is the
ability of a system to increase and decrease in size (usually based on usage
demand).
In architecting
applications, it usually refers to the ability of an application to increase
and decrease server capacity on demand.
Cost Efficient: choosing
the correct options to make a system as inexpensive as possible.
Secure: following proper
security guidelines and best practices to secure a system.
AWS Best Practices
is a set of guidelines outlined by AWS that should be followed when provisioning and using their
services.
Quiz: Account
& Physical Organization
T: Each Availability Zone has at least one AWS data
center and sometimes up to 5 or 6 data centers.
T: Availability Zones do NOT span across regions.
Availability zones DO provide for highly available and fault tolerant
architecture, but an AZ is contained within a region.
Q: What are the main benefits of AWS regions?
A: Regions allow you to place AWS resources in the area
of the world closest to your customers who access those resources.
A: Regions allow you to design applications to conform to
specific laws and regulations for specific parts of the world.
Q: What are the benefits of an Availability Zone?
A: Each Availability Zone is isolated from each other to
ensure fault tolerance.
A: Availability Zones have direct, low latency
connections to each other.
Q: Besides regions and their included Availability Zones,
which of the following is another “regional” data center location used for
content distribution?
A: Edge Location*
Q: What best describes the concept of elasticity?
A: The ability of a system to increase and decrease in
size
T: Fault Tolerance is a system ability allowing the
system to continue to operate even when one of its components fail.
Q: What best describes the concept of High Availability?
A: A durable system that can operate for long periods of
time without failure.
Q: What are the two primary ways that AWS users interface
with AWS?
A: AWS CLI
A: AWS Console
*An Edge Location
is an AWS datacenter which does not contain AWS services.
It is used to
deliver content to parts of the world (e.g. CloudFront)
Image: AWS Edge
Location
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