Describe the benefits of using cloud service

Question 1

What are two of the largest considerations when building or deploying a cloud application?

Answer 1

uptime (availability)
the ability to handle demand (for scale)

Question 2

Define high availability

Answer 2

ensures maximum availability regardless of any disruptions that could occur

Question 3

What is an SLA?

Answer 3

Service level agreement
- former agreement between consumer and provider.
think of a detailed contract

Question 4

True or False
Each Azure service has its own SLA (service level agreement)?

Answer 4

True

Question 5

Are uptime and downtime listed in SLAs?

Answer 5

Yes, as well as any credit that may be accounted for if SLA requirements are not met.

Question 6

True or Fale
More availability is more costly

Answer 6

True

Question 7

True or False
99% and 99.9% availability have roughly the same amount of downtime.

Answer 7

False

Question 8

If a system has 99.9% availability, what kind of down time are they looking at?

Answer 8

10mins per week and 43.2 mins per month

Question 9

What are the two styles of scalability?

Answer 9

Horizontal and Vertical

Question 10

Define scalability

Answer 10

the ability to adjust resources to meet demand

Question 11

Define vertical scaling

Answer 11

focused on increasing or decreasing the capabilities of resources.
EX: add more processing power, add CPUs or RAM to VM, or scale it back by removing.

Question 12

Define horizontal scaling

Answer 12

adding or subtracting the number of resources.
EX: deployed resources could be scaled out - add VM or containers if demand was needed or scale in if there’s a drop in demand. —- these can be done both manually and automatically

Question 13

Define Reliability

Answer 13

ability to recover from failures and continue to function

Question 14

Does Azure take advantage of open regions if needed? What does this mean?

Answer 14

Yes. If one region is being overloaded, traffic will be directed to a less stressed area.

Question 15

Define predictability

Answer 15

predicts the resources need to deliver a positive experience for your customers

Question 16

What are some services that can be used to ensure predictability?

Answer 16

Load Balancing - direct traffic to less stressed areas
Autoscaling - can deploy additional resources as well as scale back
High availability

Question 17

What are two ways to help predict cost?

Answer 17

Pricing calculator
Total cost ownership (TCO)

Question 18

True or False
You can track cost in real time

Answer 18

True