WGU D282 CLOUD FOUNDATIONS
CERTIFICATION PREPARATION GUIDE
◉ Amazon EC2 Instances Types (5).
Answer: General Purpose
Compute Optimized
Memory Optimized
Accelerated computing
Storage optimized
◉ Amazon EC2; General Purpose Instances (4).
Answer: application servers
gaming servers
backend servers for enterprise applications
small and medium databases
◉ Amazon EC2; Compute Optimized.
Answer: is ideal for compute-bound applications that benefit from
high-performance processors.
◉ Amazon EC2; Memory Optimized.
,Answer: is designed to deliver fast performance for workloads that
process large datasets/databases in memory
◉ Amazon EC2; Accelerated computing.
Answer: use hardware accelerators, or coprocessors, to perform
some functions more efficiently than is possible in software running
on CPUs
◉ Amazon EC2; Storage optimized.
Answer: designed for workloads that require high, sequential read
and write access to large datasets on local storage
◉ Amazon EC2; Pricing Types (5).
Answer: On-Demand
Reserved instances
EC2 Instance Savings Plans
Spot Instances
Dedicated Hosts
◉ Amazon EC2 Pricing; On-Demand- (3 Definition points).
Answer: *ideal for short-term, irregular workloads that cannot be
interrupted.
*No upfront costs or minimum contracts apply.
,*The instances run continuously until you stop them, and you pay
for only the compute time you use.
◉ Amazon EC2 Pricing; Reserved instances (2).
Answer: *Standard Reserved Instances
if you know the EC2 instance type and size you need for your
steady-state applications and in which AWS Region you plan to run
them.
*Convertible Reserved Instances
If you need to run your EC2 instances in different Availability Zones
or different instance types
◉ Amazon EC2 Pricing; EC2 Instance Savings Plans (Contract and
Savings %).
Answer: * 1-year or 3-year term
* 72 percent compared to On-Demand rates.
Any usage up to the commitment is charged at the discounted
Savings Plans rate
Any usage beyond the commitment is charged at regular On-
Demand rates.
◉ Amazon EC2 Pricing; Spot Instances.
, Answer: *workloads with flexible start and end times, or that can
withstand interruptions.
*use unused Amazon EC2 computing capacity and offer you cost
savings at up to 90% off of On-Demand prices.
◉ Amazon EC2 Auto Scaling Types (5).
Answer: desired capacity
predictive scaling
dynamic scaling
minimum capacity
maximum capacity
◉ Amazon EC2 Auto Scaling Definition.
Answer: enables you to automatically add or remove Amazon EC2
instances in response to changing application demand.
◉ Amazon EC2 Auto Scaling; dynamic.
Answer: esponds to changing demand.
◉ Amazon EC2 Auto Scaling; predictive.
Answer: automatically schedules the right number of Amazon EC2
instances based on predicted demand.
CERTIFICATION PREPARATION GUIDE
◉ Amazon EC2 Instances Types (5).
Answer: General Purpose
Compute Optimized
Memory Optimized
Accelerated computing
Storage optimized
◉ Amazon EC2; General Purpose Instances (4).
Answer: application servers
gaming servers
backend servers for enterprise applications
small and medium databases
◉ Amazon EC2; Compute Optimized.
Answer: is ideal for compute-bound applications that benefit from
high-performance processors.
◉ Amazon EC2; Memory Optimized.
,Answer: is designed to deliver fast performance for workloads that
process large datasets/databases in memory
◉ Amazon EC2; Accelerated computing.
Answer: use hardware accelerators, or coprocessors, to perform
some functions more efficiently than is possible in software running
on CPUs
◉ Amazon EC2; Storage optimized.
Answer: designed for workloads that require high, sequential read
and write access to large datasets on local storage
◉ Amazon EC2; Pricing Types (5).
Answer: On-Demand
Reserved instances
EC2 Instance Savings Plans
Spot Instances
Dedicated Hosts
◉ Amazon EC2 Pricing; On-Demand- (3 Definition points).
Answer: *ideal for short-term, irregular workloads that cannot be
interrupted.
*No upfront costs or minimum contracts apply.
,*The instances run continuously until you stop them, and you pay
for only the compute time you use.
◉ Amazon EC2 Pricing; Reserved instances (2).
Answer: *Standard Reserved Instances
if you know the EC2 instance type and size you need for your
steady-state applications and in which AWS Region you plan to run
them.
*Convertible Reserved Instances
If you need to run your EC2 instances in different Availability Zones
or different instance types
◉ Amazon EC2 Pricing; EC2 Instance Savings Plans (Contract and
Savings %).
Answer: * 1-year or 3-year term
* 72 percent compared to On-Demand rates.
Any usage up to the commitment is charged at the discounted
Savings Plans rate
Any usage beyond the commitment is charged at regular On-
Demand rates.
◉ Amazon EC2 Pricing; Spot Instances.
, Answer: *workloads with flexible start and end times, or that can
withstand interruptions.
*use unused Amazon EC2 computing capacity and offer you cost
savings at up to 90% off of On-Demand prices.
◉ Amazon EC2 Auto Scaling Types (5).
Answer: desired capacity
predictive scaling
dynamic scaling
minimum capacity
maximum capacity
◉ Amazon EC2 Auto Scaling Definition.
Answer: enables you to automatically add or remove Amazon EC2
instances in response to changing application demand.
◉ Amazon EC2 Auto Scaling; dynamic.
Answer: esponds to changing demand.
◉ Amazon EC2 Auto Scaling; predictive.
Answer: automatically schedules the right number of Amazon EC2
instances based on predicted demand.
