AZ-900 Basic 2 — Questions and Answers
Question 1: What is the primary benefit of cloud computing's 'elasticity'?
- Resources scale up or down to match demand (Correct answer)
- Data is stored on physical tapes
- Servers never need patching
- Networking is disabled by default
Correct answer: Resources scale up or down to match demand
Elasticity lets you automatically add or remove resources to match changing workload demand.
Question 2: Which cloud model gives you the MOST control over the underlying operating system?
- SaaS
- PaaS
- IaaS (Correct answer)
- FaaS
Correct answer: IaaS
Infrastructure as a Service provides virtual machines where you manage the OS yourself.
Question 3: What does 'CapEx' refer to in cloud economics?
- Upfront capital spending on physical assets (Correct answer)
- Ongoing pay-as-you-go operating costs
- A type of Azure virtual network
- A compliance certification
Correct answer: Upfront capital spending on physical assets
CapEx is the upfront capital expenditure on physical infrastructure like servers and data centers.
Question 4: Moving from CapEx to OpEx is a key financial advantage of which approach?
- On-premises datacenters
- Cloud computing (Correct answer)
- Mainframe hosting
- Tape backup
Correct answer: Cloud computing
Cloud computing shifts spending from upfront capital to consumption-based operating expenses.
Question 5: Which characteristic describes the ability to quickly provision resources on demand?
- High latency
- Agility (Correct answer)
- Vendor lock-in
- Manual procurement
Correct answer: Agility
Agility is the ability to rapidly provision and deprovision cloud resources as needed.
Question 6: In the shared responsibility model for IaaS, who is responsible for the physical datacenter security?
- The customer
- The cloud provider (Correct answer)
- A third-party auditor
- The end user
Correct answer: The cloud provider
The cloud provider is always responsible for physical security of datacenters.
Question 7: What is a key benefit of cloud 'high availability'?
- Lower internet bandwidth
- Applications stay accessible despite failures (Correct answer)
- No need for backups
- Free software licenses
Correct answer: Applications stay accessible despite failures
High availability keeps applications running and accessible even when components fail.
AZ-900 Basic 2
What is the primary benefit of cloud computing's 'elasticity'?