Cloud Computing: From Discovery to Expertise

1. Microsoft 365 or Salesforce are examples of:

IaaS PaaS SaaS Private Cloud

2. What is the goal of 'Auto-scaling'?

Changing server names Automatically adjusting the number of instances based on metrics (CPU, traffic) Installing updates Reducing the bill

3. What is the principle of 'Serverless' (FaaS)?

There are no more physical servers The user does not manage any infrastructure and only pays for the execution time of the code It is a cloud without an Internet connection It is reserved for file storage

Chapter Migration, costs and practices

4. What is the main architectural difference between a VM and a Container?

The VM is lighter The container shares the host OS kernel, the VM embeds its own full OS Containers only work on Linux There is no difference

5. A 'Hybrid Cloud' is a combination of:

Windows and Linux IaaS and PaaS Public cloud and private infrastructure (on-premise) AWS and Azure only

6. What does 'Cloud Native' mean?

An application born on a laptop An approach to building applications that fully exploit Cloud advantages (containers, microservices) An employee working in the Cloud A server that only works on the Internet

7. In the IaaS model, which layer remains the responsibility of the customer?

Virtualization Physical hardware Operating System (OS) Datacenter cooling

8. What is the main difference between Scalability and Elasticity?

It is the same thing Scalability is the ability to support growth, elasticity is the automation of this adaptation Elasticity is manual Scalability only concerns storage

9. Congratulations! What is the main advantage for a company moving to the Cloud?

It is always cheaper Agility and speed of innovation (Time to Market) No more need for IT professionals Servers never crash

10. What is Edge Computing?

A very powerful cloud Data processing as close to the source as possible (e.g., IoT sensors) to reduce latency Microsoft's cloud A disk backup technique

11. What does the acronym SLA stand for?

Service Level Agreement Security Layer Access System Logic Analysis Software License Authorization

12. What does 'On-premise' mean?

In the public cloud Infrastructure installed locally on the company's premises A messaging service A sales promise

13. Which practice aims to optimize and control financial costs in the Cloud?

DevOps FinOps SysOps DataOps

14. If a service has 'three nines' (99.9%) availability, what is the maximum tolerated annual downtime?

5 minutes 8 hours 45 minutes 3 days 24 hours

15. What is the capacity of a system to automatically adapt its resources based on demand called?

Virtualization Elasticity Multi-tenancy Provisioning

16. What does the acronym IaaS stand for?

Information as a Service Infrastructure as a Service Interface as a Service Integration as a Service

17. In the Disaster Recovery Plan (DRP), what does RTO mean?

Recovery Time Objective (Maximum time to restore service) Recovery Point Objective (Maximum acceptable data loss) Return To Office Remote Technology Operation

Chapter Migration, costs and practices

18. What does the acronym CaaS stand for?

Computing as a Service Container as a Service Capacity as a Service Control as a Service

19. In the 'Shared Responsibility Model', who is responsible for OS patch management in PaaS mode?

The customer The cloud provider Both No one

20. What is a Hypervisor?

A cloud administrator The software that allows creating and managing virtual machines (VMs) A type of firewall Google's search engine