Concepts Flashcards
What are the 5 things Trusted Advisors look at when analyzing a network
Cost optimization Performance Security Fault Tolerance Service Limits
What are the 5 pillars of a well-architected framework
Operational Excellence Security Reliability Performance Efficiency Cost Optimization
What are the design principles of the operational excellence pillar for a well-architected framework
Perform operations as code Annotate operations Make frequent, small, reversible changes Refine operations procedures frequently Anticipate failure Learn from all operational failures
AWS provides a ________ pricing model
pay as you go
Benefits of cloud computing
Replace capital expenditures with low variable costs
The Network Access Control List provides access to ______
A Subnet of a VPC
The Security Group provides access to ________
An EC2 Instance
The NACL is or is not required for a VPC
Is NOT
A Security Group is or is not required for each EC2
IS
How does a VPC and subnet in a VPC connect to the internet
Through an Internet Gateway (to the internet)
By default, all subnets within a VPC can or cannot communicate with one another
CAN
What are the three types of ELB’s
Network, Classic, Application
______ ELB has a listener to route application traffic
Application LB
______ ELB is ideal for applications that require extreme performance and has a single IP address per AZ
Network
EC2 is a managed or unmanaged service
Unmanaged
What is the cost of a VPC
It’s free
A VPC is needed to access ____ in AWS
EC2
Which ELB operates at layer 7 (OSI Model)
Application
Which ELB operates at layer 4 (OSI Model)
Network
What allows the Application ELB to route traffic
Listeners and targets
What is the limit of EC2 instances per account per region
20
What is the soft limit of VPCs per account per region
5
What service provides information to AutoScaling to increase or decrease instances
CloudWatch
What service adds or deletes instances to enabled flexibility
AutoScaler