AZ-900 的考試準備筆記，精選考試重要的知識點，區別、比較，並作為知識取回的提示捷徑。
Concepts
Operational Expenditure Model / Capital Expenditure Model
- OPEX
- 使用計算服務的費用，除了預付買斷的情況外，基本上算是用多少算多少
- CAPEX
- 自己經營機房，水電、設施費用都需要納入，等價詞為 On-Premise
Region / Availability Zone / Datacenter
Azure Region
Contains one or more data centers that are connected by using a low-latency network
不是 Azure Region 每個都有 Availability Zones，可能僅由數個 Data Centers 所組成，但有 Availability Zones 的 Region ─ 很棒 😊！能夠提升服務的可用性。
雲端的服務類型 Iaas / Paas / Saas
- Iaas
- Azure Files, Virtual Machine
- Paas
- Azure SQL Database, Azure Cosmos DB
- Saas
- Microsoft intune
SLA
99.99% - 2 virtual machines and 2 availability zones
| SLA | Annual MTD |
|---|---|
| 99% | 87:36:00 |
| 99.9% | 8:45:36 |
| 99.99% | 52:34 |
| 99.999% | 5:15 |
| 99.9999% | 32 secs |
Cloud Features
Fault Tolerance / 容錯
Remains Availiable Even failure happened
Disaster Recovery / 災難復原
Recovered from failure happened
Scalability / 規模
Service perform quickly when demand increase
Low Latency / 低延遲
Service be accessed quickly
Elasticity / 彈性
App1 has low usage during the first three weeks of each month and very high usage during the last week of each month.
Private / Hybrid / Public Cloud
Solutions
- Azure Cosmos DB
- Paas Service, globally distributed database that supports NoSQL
- Azure Machine Learning Studio
- AI Solutions
- Azure API Management service
- Azure DevTest Labs
- Deploy Linux, Windows Lab Env
- Microsoft Managed Desktop / Azure Reserved Virtual Machines (VM) Instances
- VPN
- The company has users that work remotely. The remote workers require access to the VMs on VNet1: Configure a Point-to-Site (P2S) VPN
- Azure Information Protection, AIP
- You have been tasked with making sure that users who connect to Azure AD via the internet from an unidentified IP address, are automatically encouraged to change passwords.
- Azure Multi-Factor Authentication, MFA
- Network Security Groups, NSG
- Deploy numerous web servers and database servers to Azure, Should allow for connection types between the web servers and database servers to be controlled.
- Local Network Gateway
- Azure App Service
- Paas Service, host web apps
- Azure SQL databases
- Paas Service, managed relational cloud database service
- Azure Site Recovery
- Disaster Recovery
- Azure Logic App
- Management groups
- Virtual Network Gateway / Gateway subnet
- Enables the client computers on your on-premises network to communicate to the Azure virtual machines.
- Support Request
- Attempt to create several managed Microsoft SQL Server instances in an Azure environment and receive a message that you must increase your Azure subscription limits.
- Azure Event Hubs
- Collect events from multiple resources into a centralized repository
- Azure Service Health
- Be notified when Microsoft plans to perform maintenance that can affect the resources deployed to an Azure subscription
- Azure Total Cost of Ownership (TCO) calculator
- Azure Databricks
- Big Data analysis service for machine learning, Apache Spark-based analytics service
- Azure Synapse Analytics
- Fully managed warehouse, colud-based that leverages massively parallel processing to query PB level data in relational database
- Azure HDInsight
- Managed Apache Hadoop(Open-Soource) clusters in the cloud that enable you process massive(distributed) amounts of data
- Azure Data Lake Analytics
- Massively parallel processing to query PB level data
- Azure Functions
- Serverless code platform
- Azure Application Insights
- Detects and diagnoses anomalies in web apps
- Azure Monitor
- Monitor performance of on-premises computers, sned alert to Azure AD security groups
- Azure DevOps
- Integrated Solutions for the deployment of code
- Azure Advisor
- A tool that provides guidance and recommendations to improve an Azure environment
- Azure Cognitive Service
- A simplified tool to build intelligent Artificial Intelligence applications
IoT
- IoT Hub
- Managed service that provides bidirectional communication between IoT devices and Azure, Processes data from millions of sensors
- IoT Central
- Fully managed software as Service solution to connect, monitor, and manage IoT device at scale
- Azure Sphere
- Communication & Security features for IoT Devices