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AZ-900
| Question | Answer |
|---|---|
| What is Elasticity? | Ability to increase or decrease the instance count or size of existing resources based on fluctuations in traffic, load, or resource workload. |
| What is Low Latency? | The ability of a cloud service to be accessed quickly from any location via the internet. |
| What is PaaS and what is its primary use? | Platform as a Service. Primarily used for development and business analysis. Client controls only the applications and data, the infrastructure is owned and controlled by the cloud service provider. |
| What is economy of scale? | The ability to do things more efficiently or at a lower cost per unit when operating on a larger scale. The more you buy of something the less it costs. |
| What is SaaS and what is its primary use? | Software as a Service. Primarily used for applications. Completely controlled by the provider, users log in via the internet with a login ID and password and use it as needed. |
| What is IaaS and what is its primary use? | Infrastructure as a Service. Primarily used as virtual data centers. Provider controls the physical hardware, but the client controls the applications, operating systems, and configurations. |
| Microsoft Office 365 is an example of which cloud service? | Software as a Service (SaaS) |
| What is Fault Tolerance? | The concept of ensuring that servers are available if a single data center goes offline. |
| What are the characteristics of private clouds? | High Scalability Improved Security Cap-Ex over Op-Ex Control over the Hardware Single Organization owned |
| What is Scalability? | Ability to increase the instance count or size of existing resources. |
| What is Cap-Ex? | Capital Expense. Up-front investment Creates benefits over a long period of time i.e., your own data center |
| What is the consumption based pricing model? | Pay only for what you use, no up front investment |
| What is Op-Ex? | Operating Expense. No up-front investment Creates immediate benefits i.e., using cloud services |
| What is a Hybrid Cloud? | Combination of public and private clouds i.e., your data center + Azure, Azure + AWS |
| What is a Public Cloud? | Resources in the cloud shared across multiple tenants/customers i.e., Azure, AWS, Google Cloud |
| What is Disaster Recovery (DR)? | Ability to back up and restore data/apps/resources |
| What is High Availability? | Ability to maintain acceptable continuous performance/Uptime |
| What is Business Agility? | Ability to rapidly adapt to market and environmental changes in productive and cost-effective ways. |
| What is Machine Learning? | A data science technique that allows computers to use existing data to forecast future behaviors, outcomes, and trends. |
| What is a DDoS attack? | Distributed Denial of Service attack Attacker uses many slave machines to overwhelm or disrupt traffic to victim |
| What is Azure Advisor | Analyzes your resource configuration and usage telemetry Recommends solutions to help improve the cost effectiveness, performance, security, and availability of your resources |
| What are Azure Storage Tables? | Auto-scaling No-SQL storage, based on key/value pairs |
| What is an Azure Load Balancer? | Enables you to load-balance incoming internet traffic or internal traffic to your VMs |
| What is an Internet of Things (IoT)? | Made up of one or more IoT devices and one or more back-end services running in the cloud that communicate with each other |
| What is the Azure CLI? | Command line experience for managing Azure resources. You can install it on macOS, Linux, and Windows and run it from the command line. |
| What are Resource Groups? | - Containers of related Azure services grouped together - Resources should share same lifecycle - Free |
| What is the Azure Machine Learning Studio? | Collaborative, drag-and-drop visual workspace where you can build, test, and deploy machine learning solutions without the need to write code. |
| What is an Azure VM Scale Set? | Auto-scaling pool of IaaS VMs |
| What is Azure App Service? | On-demand auto-scaling web/mobile/API app hosting |
| What are Azure Storage Files? | Fully managed file shares in the cloud that are accessible via the industry-standard Server Message Block (SMB) protocol. Mount file shares concurrently in the cloud or on-premises on Windows, Linux, and macOS. |
| What is Azure Function? | Event-driven, serverless compute resources |
| What is Azure Data Lake? | On-demand analytics job service. Easily develop and run massively parallel data transformation and processing over petabytes of data. |
| What are Azure Regions? | Groups of multiple Azure Data Centers in a geographic space |
| What is Azure IoT Central? | Fully managed SaaS solution. Easily connect, monitor, and manage your IoT devices/assets at scale. |
| What is Azure Powershell? | Set of PowerShell cmdlets for managing Azure resources. Uses .NET standard, making it available for Windows, macOS, and Linux. |
| What is Azure HDInsight? | Open-source framework for distributed processing and analysis of Big Data sets on clusters. |
| What is Azure Cloud Shell? | Interactive, browser-accessible shell that runs Bash or PowerShell. |
| What is Azure Cosmos DB? | Globally distributed, multi-model NoSQL database |
| What is Azure Blob Storage? | Object store for unstructured data |
| What is the Azure Portal? | Build, manage, and monitor every Azure resource in a single, unified console. |
| What is an Azure VM? | On-demand IaaS compute resources - Virtual Machine |
| What is Azure Event Grid? | Fully managed event routing service. |
| What is an Azure Virtual Network (vnet)? | Enables Azure resources to securely communicate with each other, the internet, and on-premises networks. |
| What is the Azure Machine Learning Service? | Provides a cloud-based environment you can use to prep data and train, test, deploy, manage, and track machine learning models. |
| What is Azure Disk Storage? | Persistent, highly-secure, cost-effective SSD/HDD options to support Azure Virtual Machines |
| What is the Azure Logic Apps? | Visual designer for automating and orchestrating serverless tasks, processes, and workflows. Connect 100+ Azure and third-party services. |
| What is the Azure Content Delivery Network (CDN)? | Efficiently delivers web content from locations that are close to end users to minimize latency. |
| What is Azure Storage Queue? | Message queue to decouple applications |
| What is Azure IoT Hub? | Core Azure PaaS messaging service used by Azure IoT Central. Enables reliable and secure bidirectional communications between millions of IoT devices and a cloud solution. |
| What is Azure SQL Database? | Relational database management system IaaS - SQL server on Azure Virtual Machines PaaS - Fully managed SQL database engine |
| What are Azure Initiatives? | A collection of policy definitions that are tailored towards achieving a singular overarching goal |
| What is Azure SQL Data Warehouse? | Cloud-based Enterprise Data Warehouse (EDW). Leverages massively parallel processing (MPP) to quickly run complex queries across petabytes of data. |
| What is Azure Database Migration Service? | Enables seamless migrations from multiple database sources to Azure data platforms with minimal downtime. |
| What is Azure Resource Manager (ARM)? | The Azure deployment and management service |
| What is Azure Service Health? | Provides a view of service issues, planned maintenance, and health advisories for Azure services and regions |
| What is Azure Monitor? | Collects granular performance and utilization data, activity and diagnostics logs, and notifications from your Azure resources all in one place |
| What is Azure App Gateway? | A web traffic load balancer that is even more customizable than Azure Load Balancer. |
| What is the General Data Protection Regulation (GDPR)? | A regulation in EU law on data protection and privacy for all individuals within the European Union and the European Economic Area |
| What is Authorization? | Specifies what data you're allowed to access and what you can do with it |
| What is Azure Firewall? | Centrally create, enforce, and log application and network connectivity policies across subscriptions and virtual networks |
| What is Microsoft Compliance Manager? | Part of the Microsoft Service Trust Portal, fully managed solution that helps you manage the end-to-end regulation-to-audit compliance process |
| What is Resource Locking? | Locks can be set to prevent deletion only, or to prevent modifications and deletion of Azure resource |
| What is Microsoft Trust Center? | Information you need to be confident that the Azure platform on which you run your services is secure |
| What is the National Institute of Standards and Technology (NIST)? | Provides the set of standards for recommended security controls for information systems at federal agencies |
| What is Azure Information Protection (AIP)? | Cloud-based solution to classify and protect documents and emails, using 80+ built-in data types (credit card numbers, ID/SSN numbers, etc.) |
| What is Azure Advanced Threat Protection (ATP)? | Identifies, detects, and helps you investigate advanced threats, compromised identities, and malicious insider actions, using data from Azure Active Directory (Azure AD), Azure Monitor logs, and Azure Security Center |
| What is the International Organization for Standardization (ISO)? | International standard-setting body composed of representatives from various national standards organizations |
| What is the Principle of Least Privilege? | Limit each user's access rights to the bare minimum permissions they need to perform their work |
| What is the Microsoft Privacy Statement? | Explains the personal data Microsoft processes, how Microsoft processes it, and for what purposes |
| What are Network Security Groups (NSGs)? | Security rules that allow or deny inbound network traffic to, or outbound network traffic from, several types of Azure resources |
| What is Authentication? | Proving who you are, usually with a username and password |
| What is Azure Multi-Factor Authentication (MFA)? | Requires two or more authentication methods |
| What is the Azure Security Center? | Sends data from the Microsoft Monitoring Agent to the security analytics engine, which provides threat detection alerts and recommendations for securing |
| What is Role-Based Access Control (RBAC)? | An authorization system built on Azure Resource Manager that provides fine-grained access management of Azure resources |
| What is an Azure VPN Gateway? | Used to send encrypted traffic between an Azure virtual network and an on-premises location or between Azure virtual networks |
| What is Azure DDoS Protection? | Continuous monitoring, alerting, and mitigation of Distributed Denial of Service attacks |
| What is Azure Active Directory (AAD)? | Fully managed identity service — Main objects are Users (pay per user) and Groups (free) |
| What is the Azure Key Vault? | Encrypt and safeguard authentication keys, storage account keys, data encryption keys, certificates, and passwords |
| What is the Microsoft Service Trust Portal? | Part of the Microsoft Trust Center, provides a variety of content, tools and other resources about Microsoft security, privacy, and compliance practices |
| What are Public and Private Preview Features? | Pre-Release Azure products and service for Microsoft to obtain feedback and for evaluation purposes. |
| What are Additional Azure Support Channels? | Azure Knowledge Center, MSDN forums, Stack Overflow forums |
| Where can you find the SLA for Azure Products and Services? | The Azure SLA landing page: |
| How can you purchase Azure products and services? | Directly from Microsoft or through a Microsoft Partner |
| What are Azure Government Services? | Isolated private cloud just for US federal, state, and local governments, and their partners |
| What are the characteristics of the Azure Free Account? | One-time offer per account for free access to many Azure products and a $200 credit to spend in the first 30 days. |
| What are the Azure Support Plan types? | Basic, Developer, Standard, Professional Direct, Premier |
| Where can you monitor Azure Feature Updates? | Azure Updates landing page: |
| What is an Azure Subscription? | Where you can manage resources using resource groups, they serve as a capacity, administration, and billing container |
| What are Azure Germany Services? | Microsoft partnered with German companies to comply with all German regulations, building 2 distinct data centers for a German-only part of Azure - As of 2018, being phased out by Microsoft - no longer accepting new users |
| What is an Azure subscription offer? | Type of subscription, such as Enterprise Agreement, Certified Solution Partner, Pay-As-You-Go, etc. |
| What are Azure Reservations? | Discounts for committing to 1-3 years of Azure products and services |
| What are Azure Billing Zones? | For data transfer in/out of Azure, regions correspond to different Azure Billing Zones and charge different prices. |
| What are the Azure Storage Blob Tiers? | Hot - high cost/fast retrieval Cool - lower cost/slower retrieval Archive - low cost/slow retrieval |
| What is the Azure Cost Management tool? | Helps you analyze costs, create and manage budgets, export data, and review and act on optimization recommendations to save money. |
| What is the Azure Total Cost of Ownership (TCO) Calculator? | Estimate the cost savings you can have by migrating your workloads to Azure. |
| Where can you access Preview Features? | Try any preview features using the Azure Portal: |
| What is the Azure Pricing Calculator? | Estimate your Azure consumption for each product or service in your solution. |
| What is General Availability (GA)? | Officially released Azure product or service |
| What are Azure Service Level Agreements (SLAs)? | Expressed as a percentage of the total time per month that the service is guaranteed to be up. Uptime is guaranteed (not performance, bandwidth, or feature availability). |
| What is the Azure Marketplace? | An online applications and services marketplace with over 8,000 listings. Offers SaaS applications, Virtual Machines, Solution Templates, and Azure Managed Applications. |
| Where do you open an Azure support ticket? | Azure Portal (portal.azure.com) |
| What is the Azure Knowledge Center? | Get answers to common support questions. |
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