Microsoft Azure Fundamentals (AZ-900) practice test 2024 latest update

What is Cloud Computing? - A model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services). - Can be rapidly provisioned and released with minimal management effort or service provider interaction. What are the benefits of using cloud services? - High Availability: The ability of a system to respond to users; uptime closer to 100%. - Scalability: The ability of a system to handle growth of users or work. - Elasticity: The ability for a system to automatically grow and shrink based on application demand. - Agility: The ability to change rapidly based on changes to market or environment. - Fault Tolerance: The ability of a system to handle faults like power, networking, or hardware failure. - Disaster Recovery: The ability for a system to recover from failure within a period of time, and how much data is lost. - Economies of Scale: It's cheaper for Microsoft to run a server than you can ever achieve yourself. - Capital Expenditure (CapEx): The money invested in assets (like computers) that return investment over time. - Operational Expenditure (OpEx): Money spent everyday on operational expenses; money that can be immediately deducted from income to reduce your taxable expenses. - Consumption-Based Model: Pay per minute, pay per hour, pay per execution. What are the different service types for cloud? - Iaas (Infrastructure as a Service) - PaaS (Platform as a Service - SaaS (Software as a Service) What is IaaS? - Infrastructure as a Service - Ex. Virtual machines, networking, load balancing, FWs. What is PaaS? - Platform as a Service - Upload code packages and have them run, without access to the hardware. - Devs can test on the backend. - Ex. PostgreSQL DBs, Oracle DBs, etc. What is SaaS? - Software as a Service - Access to configuration only - Ex. Google, Facebook, Twitter, etc. How does IaaS, PaaS, & SaaS compare when building a traditional on-premise server? - Traditional IT: You manager everything - IaaS: You manage applications, data, runtime, middleware, and OS. - PaaS: You manage applications, data. - SaaS: You manage nothing What are the different cloud concepts? - Public cloud - Private cloud - Hybrid cloud What is a Public Cloud? - Computing services offered over the public internet; anyone can sign up. - 100% of resources/infrastructure are hosted by the cloud provider. - Only pay for resources needed. What is a Private Cloud? - Computing services offered to only select users; internal or corporate cloud. - 100% of resources/infrastructure is hosted on-premise. What is a Hybrid Cloud? - Combination of public and private clouds; scale private infrastructure to the cloud. - Some resources/infrastructure are hosted on-premise and some are hosted by the cloud provider. What are the 5 key characteristics of Cloud Computing? - On-demand self-service - Broad network access - Resource pooling - Rapid elasticity - Measured service What does the key characteristic of Cloud Computing, On-Demand Self-Service mean? - Customer can select the resource needed. - Customer can access at anytime and from anywhere. - Customer can upgrade/downgrade services anytime. What does the key characteristic of Cloud Computing, Rapid Elasticity mean? - Customer's resource scalability (horizontal & vertical). + Horizontal Scaling: Scaling in & out (Ex. server CPU threshold exceeded, more servers are added.). + Vertical Scaling: Scaling up & down (Ex. Power off server to increase storage from 2GB to 4GB). - Customer's resource flexibility. What does the key characteristic of Cloud Computing, Measured Service mean? - Pay as you go. - No rental. - Financial control over business process. What does the key characteristic of Cloud Computing, Resource Pooling mean? - Scale up/down resources based on customer/business. - Achieve multi-tenancy (multiple tenants sharing resources). What does the key characteristic of Cloud Computing, Broad Network Access mean? - Any network, anytime, any location. - Internet is the backbone. - Any web-enabled device. What are the core Azure architectural components that serve as the building blocks for any Azure solution? - Azure Regions - Azure Availability Zones - Azure Resource Groups (RG) - Azure Resource Manager (ARM)