Main Test Flashcards
Describe High Availability regarding cloud service:
- Agreed level of uptime
- Specified in SLA
High Availability is achieved by using(select one):
- lots of servers
- multiple locations
- redundancy
- redundancy
Describe two forms of scalability using cloud service:
- Scaling up(vertical): more CPU cores, memory, disks
- Scaling out(horizontal): more Servers
Describe elasticity:
- ability to quickly expand/decrease computer processing, memory and storage
Describe Agility:
- how fast Azure can allocate/deallocate resources
Describe Fault Tolerance:
- continuing to provide a service to underlying application even after the failure of one/more components in any layer
Describe Disaster Recovery:
- Backups, screenshots
- to retain multiple copies of data
Describe Economies of Scale regarding Cloud Providers:
- Ability to do things more efficiently at a larger scale
- Providers find ways to lower cost (i.e. discounts from govt regarding tax savings, low electricity rates
Any product will inevitably have a ____ cost as the product becomes more of a commodity.
- core
What is Capital Expenditure(CapEx)?
- upfront costs for all the hardware
- tax is deducted over time
- Think of ‘Value that decreases over time
What is Operational Expenditure(OpEx)?
- spending money on services/products now, and being billed for it now
- pay for product as you use it
- NO upfront cost
Give examples of CapEx computing costs?
- server
- storage
- network
- data infrastructure ( warehouse.. etc)
- think of on-premise cost
Give Examples of OpEx computing costs?
- cloud-based server (pay-per-use model)
- leasing software
- scaling chargers based on usage/demands (CPU
usage time) - think of off-premise cost
List some benefits of CapEx?
- fixed costs
- works best with a fixed budget
List some benefits of OpEx?
- pay-per-use costs
- works best with fluctuating demands based upon
services
