Match each Azure security service to its role.
Drag a concept onto its matching description — or click a concept then click the description.
Unified security management and threat protection
Cloud-native SIEM and SOAR
Manage secrets, keys, and certificates
Protect against distributed denial-of-service attacks
Managed network firewall service
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Azure Security Center: Unified infrastructure security management system that strengthens the security posture of your data centers.
Azure Security Center provides unified security management, Azure Sentinel offers SIEM/SOAR capabilities, Azure Firewall secures network traffic, and Azure DDoS Protection mitigates DDoS attacks. Common confusions include mixing the roles of Security Center and Sentinel.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Azure Security Center: Unified infrastructure security management system that strengthens the security posture of your data centers.
Why this is correct
Azure Security Center delivers unified infrastructure security management by continuously assessing your hybrid and cloud workloads against industry standards, surfacing misconfigurations, and providing hardening recommendations. It centralizes policy compliance and security posture monitoring so you can remediate vulnerabilities before they are exploited. This is precisely the role in the match: it strengthens the security posture of your data centers through visibility, configuration management, and oversight rather than focusing on a single attack vector.
Azure Sentinel: Cloud-native SIEM and SOAR solution that provides intelligent security analytics.
Why this is correct
Azure Sentinel is a scalable, cloud-native security information and event management (SIEM) and security orchestration, automation, and response (SOAR) platform. It ingests logs and alerts from your entire organization, uses AI to correlate anomalies into incidents, and supports automated playbooks for response. This role matches the description: it provides intelligent security analytics, not infrastructure policy enforcement.
Azure Firewall: Managed, cloud-based network security service that protects your Azure Virtual Network resources.
Why this is correct
Azure Firewall is a stateful, managed firewall service that filters Layer 3–7 traffic to and from resources in Azure Virtual Networks. It enforces allow/deny rules based on network and application criteria, supports threat intelligence-based filtering, and is fully managed with built-in high availability. Its role in the match is protecting virtual network resources by controlling inbound and outbound connectivity, unlike services focused on detection or analytics.
Azure DDoS Protection: Protects Azure applications from Distributed Denial of Service (DDoS) attacks.
Why this is correct
Azure DDoS Protection continuously monitors public IP addresses for volumetric, protocol, and resource-layer DDoS attack signs, automatically absorbing or redirecting attack traffic to safeguard application availability. It is paired with standard network routing and can be combined with application-layer rules to protect specific workloads. This matches the given role exactly: defending Azure applications from DDoS attacks, a distinct and dedicated network-level mitigation service.
Azure Security Center: Protects Azure applications from DDoS attacks.
Why it's wrong here
Azure Security Center is a management and monitoring plane that evaluates configuration, compliance, and threat signals, but it does not actively mitigate network-layer DDoS traffic. DDoS attack absorbing or redirecting is performed by the dedicated Azure DDoS Protection service, which runs at the Azure edge. Attributing DDoS protection to Security Center conflates security oversight with the specialized mitigation layer; it would be a false match for the service's role.
Azure Sentinel: Unified infrastructure security management system that strengthens the security posture of your data centers.
Why it's wrong here
Azure Sentinel's purpose is to aggregate security signals from across your enterprise and turn them into actionable incidents via AI and automation, not to manage infrastructure security posture. Posture management—such as hardening configuration, policy compliance, and vulnerability assessment — is the domain of Azure Security Center (now Defender for Cloud). Thus this role describes a different service, so it is an incorrect assignment for Sentinel.
Go deeper
Learn chapter
Azure Regions and Geographies
Key term
Security
Security in IT is the practice of protecting systems, networks, and data from unauthorized access, damage, or theft.
Key term
Role
A role is a named set of permissions that can be assigned to users or groups to control access to resources in an IT environment.
About these practice questions
This AZ-900 question is part of Courseiva's 981-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AZ-900 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-900 exam.