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Last Update: Oct 18, 2026

SC-100 Training Course: 168 Video Lectures

SC-100 PDF Study Guide: 436 Pages

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Microsoft SC-100 Practice Test 3

Question 20

A multinational enterprise reports this risk: A high-privilege application credential appears in a public repository and the response team plans only to delete the commit. Which change MOST directly mitigates the design gap?

  1. Correlate role audit events to approvals and investigate unexplained elevation.
  2. Rehearse emergency access under controlled monitoring and document safe credential custody.
  3. Revoke and rotate the exposed credential, then investigate its use and effective grants.
  4. Revoke active sessions and review delegated app tokens in addition to disabling the account.

Explanation

Correct Answer

C:

Repository removal does not invalidate a secret that attackers may have copied. This choice directly fits the stated architecture requirement.

Incorrect Answers

A:

This recommendation fits a different scenario: A security review finds administrative role changes with no change ticket or recorded business purpose. Privileged authorization needs traceability between approvals and actual assignment. It does not solve the specified case, for which Revoke and rotate the exposed credential, then investigate its use and effective grants. is appropriate.

B:

This recommendation fits a different scenario: A security team wants to test emergency access without leaving a highly privileged account active in daily workflows. Recovery readiness depends on tested access and careful operational protection. It does not solve the specified case, for which Revoke and rotate the exposed credential, then investigate its use and effective grants. is appropriate.

D:

This recommendation fits a different scenario: An incident commander suspends a compromised administrator but leaves an active privileged cloud session untouched. Session containment may require actions beyond account state changes. It does not solve the specified case, for which Revoke and rotate the exposed credential, then investigate its use and effective grants. is appropriate.

Question 21

An architecture approval board must resolve this concern: A privileged insider can export an entire regulated dataset despite only needing aggregate reports. Which architecture recommendation BEST addresses the case?

  1. Implement time-bound entitlements with periodic access reviews and automatic deprovisioning.
  2. Scope third-party application permissions and establish rapid revocation and monitoring of delegated grants.
  3. Combine least-privilege data roles, sensitive-data monitoring and governed exfiltration controls.
  4. Design phishing-resistant MFA and context-aware Conditional Access for sensitive operations.

Explanation

Correct Answer

C:

Restricting broad read access and detecting risky movement reduce insider-data exposure. This choice directly fits the stated architecture requirement.

Incorrect Answers

A:

This recommendation fits a different scenario: A contractor's access remains active after their approved business engagement ends. External identity access must track business sponsorship and contract lifecycle. It does not solve the specified case, for which Combine least-privilege data roles, sensitive-data monitoring and governed exfiltration controls. is appropriate.

B:

This recommendation fits a different scenario: A supply-chain incident compromises a trusted vendor integration that has tenant-wide API permissions. Vendor compromise impact depends on the permissions and persistence granted to the integration. It does not solve the specified case, for which Combine least-privilege data roles, sensitive-data monitoring and governed exfiltration controls. is appropriate.

D:

This recommendation fits a different scenario: An external attacker obtains one employee password and can access several administrative interfaces without a new check. Strong authentication and risk evaluation limit credential replay across privileged surfaces. It does not solve the specified case, for which Combine least-privilege data roles, sensitive-data monitoring and governed exfiltration controls. is appropriate.

Question 22

A security engineering lead describes the following problem: An Azure Function needs to read a single storage container but currently stores the account access key. Which action is MOST appropriate for the stated need?

  1. Move workload authentication to supported federated credentials or managed identity with controlled rotation.
  2. Design supported workload identity federation and Key Vault data permissions for that pod.
  3. Validate token audience, issuer and intended resource authorization in the application trust design.
  4. Grant its managed identity scoped Azure RBAC for the required storage data operations.

Explanation

Correct Answer

D:

Scoped managed identity eliminates reusable account keys and narrows permitted operations. This choice directly fits the stated architecture requirement.

Incorrect Answers

A:

This recommendation fits a different scenario: A scheduled job authenticates with a certificate embedded inside a container image copied to every environment. Image distribution must not spread persistent private keys across deployments. It does not solve the specified case, for which Grant its managed identity scoped Azure RBAC for the required storage data operations. is appropriate.

B:

This recommendation fits a different scenario: A Kubernetes pod receives cluster admin privileges to access one Azure Key Vault secret. Access to a cloud secret does not require Kubernetes control-plane administration. It does not solve the specified case, for which Grant its managed identity scoped Azure RBAC for the required storage data operations. is appropriate.

C:

This recommendation fits a different scenario: A service-to-service request succeeds with an OAuth token that belongs to the wrong audience. A valid token for one API does not authorize access to a different service. It does not solve the specified case, for which Grant its managed identity scoped Azure RBAC for the required storage data operations. is appropriate.

Question 23

A governance team has raised this design requirement: A financial services tenant receives executive impersonation messages and only basic bulk-spam filtering is configured. What should the cybersecurity architect recommend?

  1. Evaluate Safe Attachments detonation and disposition policy for protected recipient groups.
  2. Design approved Threat Explorer investigation and scoped post-delivery remediation workflows.
  3. Design targeted anti-phishing impersonation protection using Defender for Office 365.
  4. Include Defender for Office 365 Safe Links time-of-click protection for eligible workloads.

Explanation

Correct Answer

C:

Impersonation controls address targeted sender deception beyond generic spam volume. This choice directly fits the stated architecture requirement.

Incorrect Answers

A:

This recommendation fits a different scenario: The organization requires suspicious attachments analyzed before employees open them. Dynamic attachment analysis can detect threats that simple filename or signature checks miss. It does not solve the specified case, for which Design targeted anti-phishing impersonation protection using Defender for Office 365. is appropriate.

B:

This recommendation fits a different scenario: A SOC can identify malicious email but lacks a governed process to remove matching messages from other mailboxes. Campaign-level investigation should lead to controlled response across actual affected recipients. It does not solve the specified case, for which Design targeted anti-phishing impersonation protection using Defender for Office 365. is appropriate.

D:

This recommendation fits a different scenario: Employees often click links that become malicious after a message was delivered. URL risk can change between delivery and user interaction, so click-time inspection provides a separate protection opportunity. It does not solve the specified case, for which Design targeted anti-phishing impersonation protection using Defender for Office 365. is appropriate.

Question 24

A regulated organization needs a safer design because: A SOC tries to isolate a compromised endpoint but the device has been offline since yesterday. Which change MOST directly mitigates the design gap?

  1. Reconcile device identities and retire stale endpoint records using supported lifecycle procedures.
  2. Alert on missing sensor check-in and integrity anomalies as security signals.
  3. Define remediation verification that inspects persistence and related credential compromise.
  4. Design containment verification and an alternate response path for unreachable devices.

Explanation

Correct Answer

D:

A remote isolation request may remain pending without endpoint connectivity. This choice directly fits the stated architecture requirement.

Incorrect Answers

A:

This recommendation fits a different scenario: A reimaged laptop appears under three device records and skews threat inventory counts. Accurate inventory is required for meaningful exposure and coverage metrics. It does not solve the specified case, for which Design containment verification and an alternate response path for unreachable devices. is appropriate.

B:

This recommendation fits a different scenario: An attacker disables endpoint telemetry, and the operations team interprets no alerts as no compromise. Telemetry loss can hide attacks and should itself be investigated. It does not solve the specified case, for which Design containment verification and an alternate response path for unreachable devices. is appropriate.

C:

This recommendation fits a different scenario: A client malware alert is closed when the process exits but persistence tasks remain installed. A stopped process does not prove a threat is fully eradicated if persistence mechanisms and related identities remain compromised. It does not solve the specified case, for which Design containment verification and an alternate response path for unreachable devices. is appropriate.

Question 25

A cybersecurity architect is evaluating the following business requirement: A partner organization needs access to one project application but should retain its own identity administration. Which architecture recommendation BEST addresses the case?

  1. Automate guest access expiration and sponsor-backed access reviews across effective memberships.
  2. Evaluate supported verifiable credential issuance and presentation with minimum disclosed claims.
  3. Separate identity proof verification from application authorization and Conditional Access evaluation.
  4. Use a governed Microsoft Entra B2B cross-tenant collaboration design with scoped resource grants.

Explanation

Correct Answer

D:

B2B collaboration preserves independent home identities while limiting access to approved resources. This choice directly fits the stated architecture requirement.

Incorrect Answers

A:

This recommendation fits a different scenario: A vendor engagement ends, but B2B guest users remain members of multiple security groups. Removing one shared link may leave app and group permissions intact, so the full guest entitlement inventory must be reviewed. It does not solve the specified case, for which Use a governed Microsoft Entra B2B cross-tenant collaboration design with scoped resource grants. is appropriate.

B:

This recommendation fits a different scenario: A team wants to rely on a verifiable credential to attest a training qualification without copying the holder's complete identity file. Decentralized credentials can convey attestations without unnecessary personal-data transfer. It does not solve the specified case, for which Use a governed Microsoft Entra B2B cross-tenant collaboration design with scoped resource grants. is appropriate.

C:

This recommendation fits a different scenario: A security architect assumes that verification of an external credential automatically grants access to every company application. Proving an attribute does not override resource-specific permissions. It does not solve the specified case, for which Use a governed Microsoft Entra B2B cross-tenant collaboration design with scoped resource grants. is appropriate.

Question 26

A hybrid-cloud design review identifies this security gap: A regulated database is directly exposed to internet clients despite only internal applications needing connections. Which action is MOST appropriate for the stated need?

  1. Design private endpoints and controlled network routing for the database service.
  2. Segment workloads with least-privilege network security group and firewall rules.
  3. Include private DNS resolution and forwarding in the hybrid network design.
  4. Test effective routing symmetry and firewall state handling for hub-and-spoke inspection.

Explanation

Correct Answer

A:

Limiting public reachability reduces exposure of sensitive data-plane interfaces. This choice directly fits the stated architecture requirement.

Incorrect Answers

B:

This recommendation fits a different scenario: Multiple application tiers use a single broad network security group allowing all east-west traffic. Explicit flow restrictions reduce lateral movement between tiers. It does not solve the specified case, for which Design private endpoints and controlled network routing for the database service. is appropriate.

C:

This recommendation fits a different scenario: A hybrid application requires private connectivity but its on-premises network cannot resolve the private endpoint's DNS name. Private connectivity depends on routing and correct name resolution together. It does not solve the specified case, for which Design private endpoints and controlled network routing for the database service. is appropriate.

D:

This recommendation fits a different scenario: An enterprise deploys two regional hubs but forgets to validate asymmetric return traffic through inspection appliances. Inconsistent forward and return paths can break stateful filtering or bypass expected controls. It does not solve the specified case, for which Design private endpoints and controlled network routing for the database service. is appropriate.

Question 27

During a security architecture workshop, the team learns that: An Azure subscription has hundreds of unused Owner roles assigned to service principals. What should the cybersecurity architect recommend?

  1. Reduce its effective permissions to diagnostics-read operations at the smallest practical resource scope.
  2. Incorporate activity evidence and resource criticality into cloud entitlement reviews.
  3. Review effective cloud entitlements and remove unnecessary standing role grants.
  4. Normalize entitlement risk across providers while retaining provider-specific authorization evaluation.

Explanation

Correct Answer

C:

Excess cloud permissions create takeover paths for dormant identities. This choice directly fits the stated architecture requirement.

Incorrect Answers

A:

This recommendation fits a different scenario: A managed identity can change production network routing despite only needing to read telemetry. Workload identity privileges should be aligned to functions rather than environment ownership. It does not solve the specified case, for which Review effective cloud entitlements and remove unnecessary standing role grants. is appropriate.

B:

This recommendation fits a different scenario: The security team sees role assignments but cannot tell whether users actually exercise their entitlements. Permission presence and actual use both inform the risk of persistent access. It does not solve the specified case, for which Review effective cloud entitlements and remove unnecessary standing role grants. is appropriate.

D:

This recommendation fits a different scenario: A project uses identical privilege reports for Azure and AWS while ignoring provider-specific permission semantics. Multicloud access review needs comparable exposure without assuming the role models are identical. It does not solve the specified case, for which Review effective cloud entitlements and remove unnecessary standing role grants. is appropriate.

Question 28

A multinational enterprise reports this risk: A tabletop exercise tests backup retrieval but never identifies who can authorize a regulated-data restoration. Which change MOST directly mitigates the design gap?

  1. Trigger resilience reassessment after material architecture changes and maintain current runbooks.
  2. Assign incident recovery decision rights and approval gates for sensitive data access.
  3. Establish a single incident command workflow with explicit containment and recovery handoffs.
  4. Include business-process owners and freshness acceptance criteria in disaster-recovery testing.

Explanation

Correct Answer

B:

Governance controls establish who can use recovery material and preserve accountability during emergencies. This choice directly fits the stated architecture requirement.

Incorrect Answers

A:

This recommendation fits a different scenario: A business continuity plan has no schedule to re-test after the organization moves its primary data platform to another cloud. Recovery documentation becomes unreliable when topology and dependencies evolve without corresponding drills. It does not solve the specified case, for which Assign incident recovery decision rights and approval gates for sensitive data access. is appropriate.

C:

This recommendation fits a different scenario: Two response teams execute contradictory network isolation and service restoration commands during the same ransomware drill. Coordinated authority prevents responders from undoing each other's actions under crisis conditions. It does not solve the specified case, for which Assign incident recovery decision rights and approval gates for sensitive data access. is appropriate.

D:

This recommendation fits a different scenario: Recovery tests meet infrastructure RTOs but fail business-user sign-off because downstream reports lack recent data. Resilience success requires restored business outcomes, not solely server availability. It does not solve the specified case, for which Assign incident recovery decision rights and approval gates for sensitive data access. is appropriate.

Question 29

An architecture approval board must resolve this concern: Facilities deploy thousands of smart building sensors with default passwords and no central device registry. Which architecture recommendation BEST addresses the case?

  1. Require unique device identity, credential provisioning and asset inventory for IoT onboarding.
  2. Design authenticated encrypted transport and gateway authorization for IoT telemetry.
  3. Specify secure update capability and controlled end-of-life replacement for embedded devices.
  4. Segment IoT networks and limit gateway-to-enterprise traffic to defined protocols.

Explanation

Correct Answer

A:

Device identity controls prevent shared default credentials from scaling into systemic exposure. This choice directly fits the stated architecture requirement.

Incorrect Answers

B:

This recommendation fits a different scenario: A device gateway accepts unencrypted readings from field sensors across untrusted networks. Protected communication mitigates impersonation and disclosure along sensor paths. It does not solve the specified case, for which Require unique device identity, credential provisioning and asset inventory for IoT onboarding. is appropriate.

C:

This recommendation fits a different scenario: An IoT fleet cannot be patched remotely and no one has documented expected service life or retirement. Unpatchable devices accumulate risk that must be managed through lifecycle planning. It does not solve the specified case, for which Require unique device identity, credential provisioning and asset inventory for IoT onboarding. is appropriate.

D:

This recommendation fits a different scenario: A retail sensor network shares routing with payment processing servers despite no operational dependency. Network isolation reduces lateral movement from less-managed devices to sensitive services. It does not solve the specified case, for which Require unique device identity, credential provisioning and asset inventory for IoT onboarding. is appropriate.

Question 30

A security engineering lead describes the following problem: A partner API receives legitimate requests but cannot distinguish which partner is allowed to call a sensitive operation. Which action is MOST appropriate for the stated need?

  1. Redact credentials and personal content in API telemetry and restrict diagnostic access.
  2. Design authenticated partner identities and per-API authorization in Azure API Management.
  3. Configure appropriate API Management rate and quota limits aligned to business contracts.
  4. Design governed API versioning and staged deprecation for breaking changes.

Explanation

Correct Answer

B:

Gateway policies can enforce caller-specific API access rather than only route traffic. This choice directly fits the stated architecture requirement.

Incorrect Answers

A:

This recommendation fits a different scenario: A gateway logs full bearer tokens and sensitive request payloads to an unrestricted workspace. Observability should not leak the secrets and data it is intended to protect. It does not solve the specified case, for which Design authenticated partner identities and per-API authorization in Azure API Management. is appropriate.

C:

This recommendation fits a different scenario: An API gateway accepts unlimited requests from every subscription and the backend repeatedly exhausts capacity. Traffic governance protects availability and enforces fair resource consumption. It does not solve the specified case, for which Design authenticated partner identities and per-API authorization in Azure API Management. is appropriate.

D:

This recommendation fits a different scenario: An architect publishes an API without a revision or version policy, breaking all consumers when its contract changes. Explicit version lifecycle protects dependent applications during interface evolution. It does not solve the specified case, for which Design authenticated partner identities and per-API authorization in Azure API Management. is appropriate.


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