AZ-900 Glossary

Question 1

TCO

Answer 1

Total Cost of Ownership (TCO) - Cost predictability tool

Question 2

Autoscaling

Answer 2

Predictability - performance. If you suddenly need more resources, autoscaling can deploy additional resources to meet the demand, and then scale back when the demand drops

Question 3

Load Balancing

Answer 3

Predictability - performance. If the traffic is heavily focused on one area, load balancing will help redirect some of the overload to less stressed areas.

Question 4

Cloud-based auditing

Answer 4

Helps flag any resource that’s out of compliance with your corporate standards and provides mitigation strategies. Depending on your operating model, software patches and updates may also automatically be applied, which helps with both governance and security.

Question 5

Analytics or business intelligence

Answer 5

Tools provided as a service with PaaS allow organizations to analyze and mine their data, finding insights and patterns and predicting outcomes to improve forecasting, product design decisions, investment returns, and other business decisions.

Question 6

Virtual machine scale sets

Answer 6

Allow you to centrally manage, configure, and update a large number of VMs in minutes. The number of VM instances can automatically increase or decrease in response to demand, or you can set it to scale based on a defined schedule. Virtual machine scale sets also automatically deploy a load balancer to make sure that your resources are being used efficiently. With virtual machine scale sets, you can build large-scale services for areas such as compute, big data, and container workloads.

Question 7

Virtual machine availability sets

Answer 7

Availability sets are designed to ensure that VMs stagger updates and have varied power and network connectivity, preventing you from losing all your VMs with a single network or power failure.

Question 8

Update domain

Answer 8

The update domain groups VMs that can be rebooted at the same time. This allows you to apply updates while knowing that only one update domain grouping will be offline at a time. All of the machines in one update domain will be updated. An update group going through the update process is given a 30-minute time to recover before maintenance on the next update domain starts.

Question 9

Fault domain

Answer 9

The fault domain groups your VMs by common power source and network switch. By default, an availability set will split your VMs across up to three fault domains. This helps protect against a physical power or networking failure by having VMs in different fault domains (thus being connected to different power and networking resources).

Question 10

Microsoft Sentinel

Answer 10

Security and Security Information and Event Manager (SIEV) / Security orchestration, automation, and response (SOAR) that can analyze data across the enterprise to identify potential threats. Use case: Build a baseline behavioral profile of organizational identities to identify anomalous activity

Question 11

Azure Key Vault

Answer 11

Allows you to securely store and access cryptographic keys, passwords, certificates. Use case: securely store a database connection string to avoid accidental use in a web sites source code.

Question 12

Azure Firewall

Answer 12

Deny traffic from known malicious IP addresses.

Question 13

Azure Monitor

Answer 13

Monitoring solution that can collect telemetry from resources to analyze performance, create alerts, build dashboards, with health system overview.