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SC-300 Premium File: 490 Questions & Answers

Last Update: Sep 21, 2026

SC-300 Training Course: 43 Video Lectures

SC-300 PDF Study Guide: 599 Pages

$79.99

SC-300 Bundle gives you unlimited access to "SC-300" files. However, this does not replace the need for a .vce exam simulator. To download your .vce exam simulator click here

Microsoft SC-300 Practice Test 15

Question 140

Users possess compatible keys but registration is blocked before key attestation starts. Which root cause best explains the described result rather than merely treating its symptoms?

  1. Disabling the account and revoking refresh sessions do not guarantee every previously issued bearer access token is immediately rejected by every app.
  2. The passkey authentication method is not enabled or the pilot group is excluded from its policy.
  3. A generic Require multifactor authentication control was used instead of the appropriate authentication strength.
  4. One-time TAP and authentication-context timing limits were not accounted for during the two-phase setup.

Explanation

Correct Answer

B:

The passkey authentication method is not enabled or the pilot group is excluded from its policy. This is the causal explanation of the observed behavior: users possess compatible keys but registration is blocked before key attestation starts. Address the underlying mechanism with: enable and scope the supported passkey FIDO2 authentication methods policy, including any approved key restrictions. Then confirm: verify a pilot user can register a supported key and use it for Microsoft Entra authentication.

Incorrect Answers

A:

This diagnosis fits a separate disable compromised account and sessions incident: A blocked user cannot start a new sign-in but an already issued access token still works temporarily in an app. It does not explain this case's observed failure; the passkey authentication method is not enabled or the pilot group is excluded from its policy.

C:

This diagnosis fits a separate phishing-resistant authentication strength incident: An administrator with SMS MFA is still allowed into the portal despite a claimed phishing-resistant requirement. It does not explain this case's observed failure; the passkey authentication method is not enabled or the pilot group is excluded from its policy.

D:

This diagnosis fits a separate single-use tap enrollment timing incident: The device enrollment succeeds but the subsequent FIDO2 registration fails after the original single-use TAP and registration window have expired. It does not explain this case's observed failure; the passkey authentication method is not enabled or the pilot group is excluded from its policy.

Question 141

A pilot group has physical security keys but the Entra security-info portal does not offer key registration to its members. The initial implementation works. Which continuing control most directly prevents the same failure or drift from recurring?

  1. Monitor registered eligible strong methods and exclude emergency access identities through approved safety design.
  2. Restrict approved authentication-key types and validate registration policies when expanding to new groups.
  3. Audit who can use SSPR and avoid treating registration alone as proof of eligibility.
  4. Manage certificate issuance and revocation and validate identity mapping after certificate authority changes.

Explanation

Correct Answer

B:

Restrict approved authentication-key types and validate registration policies when expanding to new groups. This reduces future drift after the initial control is deployed: enable and scope the supported passkey FIDO2 authentication methods policy, including any approved key restrictions. Recheck the actual behavior with: verify a pilot user can register a supported key and use it for Microsoft Entra authentication.

Incorrect Answers

A:

This control manages future phishing-resistant authentication strength drift, but it does not reduce the continuing exposure in the described passkey fido2 registration policy case. The correct safeguard is: restrict approved authentication-key types and validate registration policies when expanding to new groups.

C:

This control manages future sspr user eligibility drift, but it does not reduce the continuing exposure in the described passkey fido2 registration policy case. The correct safeguard is: restrict approved authentication-key types and validate registration policies when expanding to new groups.

D:

This control manages future certificate-based authentication drift, but it does not reduce the continuing exposure in the described passkey fido2 registration policy case. The correct safeguard is: restrict approved authentication-key types and validate registration policies when expanding to new groups.

Question 142

Field technicians have managed smart-card certificates and must authenticate with their certificate identity rather than a password. Which proposed configuration or implementation directly meets the stated requirement?

  1. Configure the supported Microsoft Entra Kerberos trust and matching Windows Hello for Business or cloud Kerberos prerequisites.
  2. Deploy a supported Windows Hello for Business policy and ensure identity/device prerequisites are met for the pilot.
  3. Enable and scope the supported passkey FIDO2 authentication methods policy, including any approved key restrictions.
  4. Configure Microsoft Entra certificate-based authentication with appropriate trust chain, user binding and policy scope.

Explanation

Correct Answer

D:

Configure Microsoft Entra certificate-based authentication with appropriate trust chain, user binding and policy scope. The solution acts at the intended identity, policy or application scope. A successful result is testable: attempt sign-in using a mapped certificate and confirm the resulting authentication method in the sign-in details. The competing configuration error is: certificate user binding or trusted issuer configuration does not align with the presented credential.

Incorrect Answers

A:

That action implements the separate microsoft entra kerberos for hybrid authentication decision. It is appropriate when hybrid users need supported cloud Kerberos-based access to an approved on-premises resource without prompting for a second password in the planned scenario. The present case instead requires the specific certificate-based authentication change: configure Microsoft Entra certificate-based authentication with appropriate trust chain, user binding and policy scope.

B:

That action implements the separate windows hello for business enrollment decision. It is appropriate when company Windows devices should use per-device, key-based Windows Hello for Business sign-in rather than a shared reusable PIN across accounts. The present case instead requires the specific certificate-based authentication change: configure Microsoft Entra certificate-based authentication with appropriate trust chain, user binding and policy scope.

C:

That action implements the separate passkey fido2 registration policy decision. It is appropriate when a pilot group has physical security keys but the Entra security-info portal does not offer key registration to its members. The present case instead requires the specific certificate-based authentication change: configure Microsoft Entra certificate-based authentication with appropriate trust chain, user binding and policy scope.

Question 143

Field technicians have managed smart-card certificates and must authenticate with their certificate identity rather than a password. The proposed change is: Configure Microsoft Entra certificate-based authentication with appropriate trust chain, user binding and policy scope. After applying the intended configuration, which observation most directly proves that the required behavior works?

  1. Obtain a supported Kerberos ticket from a pilot device and confirm access to the intended legacy resource.
  2. Confirm the user signs in during TAP validity, registers a passkey and then authenticates with the new passkey.
  3. Complete a pilot enrollment that takes more than ten minutes and confirm the second authorized authentication can register the passkey.
  4. Attempt sign-in using a mapped certificate and confirm the resulting authentication method in the sign-in details.

Explanation

Correct Answer

D:

Attempt sign-in using a mapped certificate and confirm the resulting authentication method in the sign-in details. This directly tests the effective outcome, not merely that a configuration exists. It establishes whether the intended change works: configure Microsoft Entra certificate-based authentication with appropriate trust chain, user binding and policy scope. Failure would be evident in this case: a valid smart-card certificate fails because Entra cannot map its certificate identity to the intended cloud user.

Incorrect Answers

A:

The proposed observation checks the different microsoft entra kerberos for hybrid authentication scenario. Even a successful test would not establish the requested outcome here: attempt sign-in using a mapped certificate and confirm the resulting authentication method in the sign-in details.

B:

The proposed observation checks the different temporary access pass bootstrap scenario. Even a successful test would not establish the requested outcome here: attempt sign-in using a mapped certificate and confirm the resulting authentication method in the sign-in details.

C:

The proposed observation checks the different single-use tap enrollment timing scenario. Even a successful test would not establish the requested outcome here: attempt sign-in using a mapped certificate and confirm the resulting authentication method in the sign-in details.

Question 144

A valid smart-card certificate fails because Entra cannot map its certificate identity to the intended cloud user. Which root cause best explains the described result rather than merely treating its symptoms?

  1. The on-premises password protection agents or enforcement configuration have not been deployed or activated.
  2. The TAP authentication method policy does not include that user or is disabled, even though a pass was issued.
  3. Certificate user binding or trusted issuer configuration does not align with the presented credential.
  4. A generic Require multifactor authentication control was used instead of the appropriate authentication strength.

Explanation

Correct Answer

C:

Certificate user binding or trusted issuer configuration does not align with the presented credential. This is the causal explanation of the observed behavior: a valid smart-card certificate fails because Entra cannot map its certificate identity to the intended cloud user. Address the underlying mechanism with: configure Microsoft Entra certificate-based authentication with appropriate trust chain, user binding and policy scope. Then confirm: attempt sign-in using a mapped certificate and confirm the resulting authentication method in the sign-in details.

Incorrect Answers

A:

This diagnosis fits a separate entra password protection on premises incident: A prohibited word is rejected by cloud password changes but still accepted by on-premises AD DS domain controllers. It does not explain this case's observed failure; certificate user binding or trusted issuer configuration does not align with the presented credential.

B:

This diagnosis fits a separate temporary access pass bootstrap incident: A TAP is created for a user but the user gets a method-not-allowed error when trying to sign in with it. It does not explain this case's observed failure; certificate user binding or trusted issuer configuration does not align with the presented credential.

D:

This diagnosis fits a separate phishing-resistant authentication strength incident: An administrator with SMS MFA is still allowed into the portal despite a claimed phishing-resistant requirement. It does not explain this case's observed failure; certificate user binding or trusted issuer configuration does not align with the presented credential.

Question 145

Field technicians have managed smart-card certificates and must authenticate with their certificate identity rather than a password. The initial implementation works. Which continuing control most directly prevents the same failure or drift from recurring?

  1. Define short TAP validity and secure issuance procedures; avoid retaining the one-time pass as a standing credential.
  2. Coordinate app revocation and Continuous Access Evaluation behavior and monitor remaining token exposure.
  3. Manage certificate issuance and revocation and validate identity mapping after certificate authority changes.
  4. Monitor agent health and audit-mode findings before enforcement changes across all domain controllers.

Explanation

Correct Answer

C:

Manage certificate issuance and revocation and validate identity mapping after certificate authority changes. This reduces future drift after the initial control is deployed: configure Microsoft Entra certificate-based authentication with appropriate trust chain, user binding and policy scope. Recheck the actual behavior with: attempt sign-in using a mapped certificate and confirm the resulting authentication method in the sign-in details.

Incorrect Answers

A:

This control manages future temporary access pass bootstrap drift, but it does not reduce the continuing exposure in the described certificate-based authentication case. The correct safeguard is: manage certificate issuance and revocation and validate identity mapping after certificate authority changes.

B:

This control manages future disable compromised account and sessions drift, but it does not reduce the continuing exposure in the described certificate-based authentication case. The correct safeguard is: manage certificate issuance and revocation and validate identity mapping after certificate authority changes.

D:

This control manages future entra password protection on premises drift, but it does not reduce the continuing exposure in the described certificate-based authentication case. The correct safeguard is: manage certificate issuance and revocation and validate identity mapping after certificate authority changes.

Question 146

A helpdesk wants nonadmin employees to reset forgotten passwords by self-service, using approved verification methods, while high-privilege accounts use distinct controls. Which proposed configuration or implementation directly meets the stated requirement?

  1. Configure the supported Microsoft Entra Kerberos trust and matching Windows Hello for Business or cloud Kerberos prerequisites.
  2. Enable SSPR for the intended eligible users and configure authentication methods and registration requirements.
  3. Apply a Conditional Access authentication strength that requires supported phishing-resistant methods to the intended privileged app and administrators.
  4. Configure Microsoft Entra certificate-based authentication with appropriate trust chain, user binding and policy scope.

Explanation

Correct Answer

B:

Enable SSPR for the intended eligible users and configure authentication methods and registration requirements. The solution acts at the intended identity, policy or application scope. A successful result is testable: test password reset for an included employee and exclusion for an out-of-scope account. The competing configuration error is: the self-service password reset policy scope excludes the user or is disabled.

Incorrect Answers

A:

That action implements the separate microsoft entra kerberos for hybrid authentication decision. It is appropriate when hybrid users need supported cloud Kerberos-based access to an approved on-premises resource without prompting for a second password in the planned scenario. The present case instead requires the specific sspr user eligibility change: enable SSPR for the intended eligible users and configure authentication methods and registration requirements.

C:

That action implements the separate phishing-resistant authentication strength decision. It is appropriate when a privileged portal must accept only phishing-resistant sign-in methods rather than any SMS or push-based multifactor completion. The present case instead requires the specific sspr user eligibility change: enable SSPR for the intended eligible users and configure authentication methods and registration requirements.

D:

That action implements the separate certificate-based authentication decision. It is appropriate when field technicians have managed smart-card certificates and must authenticate with their certificate identity rather than a password. The present case instead requires the specific sspr user eligibility change: enable SSPR for the intended eligible users and configure authentication methods and registration requirements.

Question 147

A helpdesk wants nonadmin employees to reset forgotten passwords by self-service, using approved verification methods, while high-privilege accounts use distinct controls. The proposed change is: Enable SSPR for the intended eligible users and configure authentication methods and registration requirements. After applying the intended configuration, which observation most directly proves that the required behavior works?

  1. Attempt a new sign-in and test a previously issued refresh token after revocation while recording any access-token limitations.
  2. Change a test AD DS password to an intentionally prohibited company term and confirm the expected rejection and logs.
  3. Enroll a test device and confirm a user-bound key and approved local biometric/PIN unlock path works.
  4. Test password reset for an included employee and exclusion for an out-of-scope account.

Explanation

Correct Answer

D:

Test password reset for an included employee and exclusion for an out-of-scope account. This directly tests the effective outcome, not merely that a configuration exists. It establishes whether the intended change works: enable SSPR for the intended eligible users and configure authentication methods and registration requirements. Failure would be evident in this case: a user registered methods but sees that password reset isn't enabled for their account.

Incorrect Answers

A:

The proposed observation checks the different disable compromised account and sessions scenario. Even a successful test would not establish the requested outcome here: test password reset for an included employee and exclusion for an out-of-scope account.

B:

The proposed observation checks the different entra password protection on premises scenario. Even a successful test would not establish the requested outcome here: test password reset for an included employee and exclusion for an out-of-scope account.

C:

The proposed observation checks the different windows hello for business enrollment scenario. Even a successful test would not establish the requested outcome here: test password reset for an included employee and exclusion for an out-of-scope account.

Question 148

A user registered methods but sees that password reset isn't enabled for their account. Which root cause best explains the described result rather than merely treating its symptoms?

  1. The on-premises password protection agents or enforcement configuration have not been deployed or activated.
  2. The self-service password reset policy scope excludes the user or is disabled.
  3. The TAP authentication method policy does not include that user or is disabled, even though a pass was issued.
  4. The Entra Kerberos server/trust or device prerequisite is incomplete despite successful cloud authentication.

Explanation

Correct Answer

B:

The self-service password reset policy scope excludes the user or is disabled. This is the causal explanation of the observed behavior: a user registered methods but sees that password reset isn't enabled for their account. Address the underlying mechanism with: enable SSPR for the intended eligible users and configure authentication methods and registration requirements. Then confirm: test password reset for an included employee and exclusion for an out-of-scope account.

Incorrect Answers

A:

This diagnosis fits a separate entra password protection on premises incident: A prohibited word is rejected by cloud password changes but still accepted by on-premises AD DS domain controllers. It does not explain this case's observed failure; the self-service password reset policy scope excludes the user or is disabled.

C:

This diagnosis fits a separate temporary access pass bootstrap incident: A TAP is created for a user but the user gets a method-not-allowed error when trying to sign in with it. It does not explain this case's observed failure; the self-service password reset policy scope excludes the user or is disabled.

D:

This diagnosis fits a separate microsoft entra kerberos for hybrid authentication incident: Cloud sign-in succeeds but users cannot obtain the expected Kerberos ticket for the on-premises target. It does not explain this case's observed failure; the self-service password reset policy scope excludes the user or is disabled.

Question 149

A helpdesk wants nonadmin employees to reset forgotten passwords by self-service, using approved verification methods, while high-privilege accounts use distinct controls. The initial implementation works. Which continuing control most directly prevents the same failure or drift from recurring?

  1. Monitor registered eligible strong methods and exclude emergency access identities through approved safety design.
  2. Restrict approved authentication-key types and validate registration policies when expanding to new groups.
  3. Test ticket acquisition and on-premises connectivity when modernizing hybrid sign-in methods.
  4. Audit who can use SSPR and avoid treating registration alone as proof of eligibility.

Explanation

Correct Answer

D:

Audit who can use SSPR and avoid treating registration alone as proof of eligibility. This reduces future drift after the initial control is deployed: enable SSPR for the intended eligible users and configure authentication methods and registration requirements. Recheck the actual behavior with: test password reset for an included employee and exclusion for an out-of-scope account.

Incorrect Answers

A:

This control manages future phishing-resistant authentication strength drift, but it does not reduce the continuing exposure in the described sspr user eligibility case. The correct safeguard is: audit who can use SSPR and avoid treating registration alone as proof of eligibility.

B:

This control manages future passkey fido2 registration policy drift, but it does not reduce the continuing exposure in the described sspr user eligibility case. The correct safeguard is: audit who can use SSPR and avoid treating registration alone as proof of eligibility.

C:

This control manages future microsoft entra kerberos for hybrid authentication drift, but it does not reduce the continuing exposure in the described sspr user eligibility case. The correct safeguard is: audit who can use SSPR and avoid treating registration alone as proof of eligibility.

Question 150

Company Windows devices should use per-device, key-based Windows Hello for Business sign-in rather than a shared reusable PIN across accounts. Which proposed configuration or implementation directly meets the stated requirement?

  1. Configure the supported Microsoft Entra Kerberos trust and matching Windows Hello for Business or cloud Kerberos prerequisites.
  2. Apply a Conditional Access authentication strength that requires supported phishing-resistant methods to the intended privileged app and administrators.
  3. Configure Microsoft Entra certificate-based authentication with appropriate trust chain, user binding and policy scope.
  4. Deploy a supported Windows Hello for Business policy and ensure identity/device prerequisites are met for the pilot.

Explanation

Correct Answer

D:

Deploy a supported Windows Hello for Business policy and ensure identity/device prerequisites are met for the pilot. The solution acts at the intended identity, policy or application scope. A successful result is testable: enroll a test device and confirm a user-bound key and approved local biometric/PIN unlock path works. The competing configuration error is: windows Hello for Business keys are bound to a user/device context rather than portable reusable PIN credentials.

Incorrect Answers

A:

That action implements the separate microsoft entra kerberos for hybrid authentication decision. It is appropriate when hybrid users need supported cloud Kerberos-based access to an approved on-premises resource without prompting for a second password in the planned scenario. The present case instead requires the specific windows hello for business enrollment change: deploy a supported Windows Hello for Business policy and ensure identity/device prerequisites are met for the pilot.

B:

That action implements the separate phishing-resistant authentication strength decision. It is appropriate when a privileged portal must accept only phishing-resistant sign-in methods rather than any SMS or push-based multifactor completion. The present case instead requires the specific windows hello for business enrollment change: deploy a supported Windows Hello for Business policy and ensure identity/device prerequisites are met for the pilot.

C:

That action implements the separate certificate-based authentication decision. It is appropriate when field technicians have managed smart-card certificates and must authenticate with their certificate identity rather than a password. The present case instead requires the specific windows hello for business enrollment change: deploy a supported Windows Hello for Business policy and ensure identity/device prerequisites are met for the pilot.


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