AZ-900 Core Cloud Computing Concepts 3 — Questions and Answers
Question 1: What is the term for distributing resources across multiple separated geographic locations for resilience?
- Disaster recovery
- Geo-redundancy (Correct answer)
- Vertical scaling
- Throttling
Correct answer: Geo-redundancy
Geo-redundancy replicates resources across separate regions to protect against regional failures.
Question 2: Adding more CPU and RAM to an existing virtual machine is an example of what?
- Horizontal scaling
- Vertical scaling (Correct answer)
- Load balancing
- Sharding
Correct answer: Vertical scaling
Vertical scaling (scaling up) adds more power to an existing instance.
Question 3: Which cloud benefit lets a company deploy new applications quickly without procuring hardware?
- Agility (Correct answer)
- Compliance
- Encryption
- Auditing
Correct answer: Agility
Agility is the ability to rapidly develop and deploy applications without hardware delays.
Question 4: Which service model is best suited for developers who want to deploy code without managing servers or OS?
- IaaS
- PaaS (Correct answer)
- On-premises
- Colocation
Correct answer: PaaS
PaaS provides a managed platform so developers focus on code, not infrastructure.
Question 5: What is the primary purpose of a Service Level Agreement (SLA) in the cloud?
- To define the price of a VM
- To formally guarantee a level of service such as uptime (Correct answer)
- To list available regions
- To document the API reference
Correct answer: To formally guarantee a level of service such as uptime
An SLA is a formal commitment defining guaranteed performance metrics like uptime.
Question 6: Which OpEx advantage is gained by moving from on-premises to the cloud?
- Larger upfront hardware purchases
- Treating computing as an ongoing operating expense (Correct answer)
- Owning the physical servers
- Eliminating all costs
Correct answer: Treating computing as an ongoing operating expense
The cloud converts IT spending into ongoing operating expenses (OpEx) rather than capital purchases.
Question 7: Which deployment model is owned and used exclusively by a single organization?
- Public cloud
- Private cloud (Correct answer)
- Hybrid cloud
- Multi-tenant cloud
Correct answer: Private cloud
A private cloud is dedicated to and used by a single organization.
AZ-900 Core Cloud Computing Concepts 3
What is the term for distributing resources across multiple separated geographic locations for resilience?