MS-900 Microsoft 365 Fundamentals Cloud Computing Concepts 4 — Questions and Answers
Question 1: Under the shared responsibility model for SaaS, who is responsible for managing the underlying infrastructure and application code?
- The customer
- A third-party auditor
- The cloud provider (Correct answer)
- The end user
Correct answer: The cloud provider
In SaaS, the cloud provider manages all infrastructure, platform, and application layers; the customer only manages their data and user access.
Question 2: Which cloud concept ensures that a service continues operating even when one or more components fail?
- Scalability
- Fault tolerance (Correct answer)
- Agility
- Elasticity
Correct answer: Fault tolerance
Fault tolerance is the ability of a system to continue functioning correctly even when individual components experience failures.
Question 3: What is the difference between scalability and elasticity in cloud computing?
- They are identical concepts with different names
- Scalability is the ability to increase capacity; elasticity adds the ability to also decrease capacity dynamically (Correct answer)
- Elasticity only applies to storage, while scalability applies to compute
- Scalability is a manual process; elasticity requires human approval
Correct answer: Scalability is the ability to increase capacity; elasticity adds the ability to also decrease capacity dynamically
Scalability means a system can grow to handle increased load, while elasticity means it can both grow and shrink automatically in real time.
Question 4: Which of the following best describes 'high availability' in Microsoft 365?
- Users can access Microsoft 365 apps without an internet connection
- Microsoft 365 services are designed to minimize downtime and remain accessible nearly all the time (Correct answer)
- Microsoft 365 stores all data locally on user devices
- High availability means unlimited storage for all users
Correct answer: Microsoft 365 services are designed to minimize downtime and remain accessible nearly all the time
High availability in Microsoft 365 means the services are engineered with redundancy so they remain operational with minimal planned or unplanned downtime.
Question 5: A hospital network wants cloud services that comply with strict regulatory requirements and are shared only among healthcare organizations. Which deployment model fits best?
- Public cloud
- Private cloud
- Community cloud (Correct answer)
- Hybrid cloud
Correct answer: Community cloud
A community cloud is shared by organizations with common concerns such as compliance requirements, and is ideal for regulated industries like healthcare.
Question 6: Microsoft 365 uses which type of update model to ensure users always have the latest features without manual upgrades?
- Perpetual licensing
- Evergreen / continuous update model (Correct answer)
- On-premises patch management
- Manual version selection by IT admin
Correct answer: Evergreen / continuous update model
Microsoft 365 uses an evergreen model where updates are pushed continuously by Microsoft, ensuring users always have the latest features and security patches.
Question 7: Which cloud characteristic allows a company to provision 100 virtual machines in minutes without calling a vendor?
- Measured service
- Broad network access
- On-demand self-service (Correct answer)
- Resource pooling
Correct answer: On-demand self-service
On-demand self-service is the NIST characteristic that allows users to provision resources automatically without requiring human interaction with the provider.
MS-900 Microsoft 365 Fundamentals Cloud Computing Concepts 4
Under the shared responsibility model for SaaS, who is responsible for managing the underlying infrastructure and application code?