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Cisco 300-715 Practice Test 92

Question 910

Certificate auto-renewal never occurs because the original enrollment identity was disabled or its renewal service is unreachable. The observed failure is: Expired certificates deny otherwise valid BYOD devices and poor renewal handling increases help-desk failures. What recovery action restores supported network-access behavior?

  1. The supported recovery is to assume changing the device registration display name renews its certificate.
  2. The supported recovery is to extend all BYOD certificates forever to avoid re-enrollment.
  3. The supported recovery is to repair eligible renewal or re-enroll securely then verify the new certificate chain and identity.
  4. The supported recovery is to disable certificate expiry validation across every PSN.

Explanation

Correct Answer

C:

Recheck certificate not-after date, renewal task, CA issuance events, device ownership and new EAP-TLS success. For the specific situation, certificate auto-renewal never occurs because the original enrollment identity was disabled or its renewal service is unreachable.

Incorrect Answers

A:

Assume changing the device registration display name renews its certificate. This action does not repair the identified failure. Expired certificates deny otherwise valid BYOD devices and poor renewal handling increases help-desk failures. Instead, repair eligible renewal or re-enroll securely then verify the new certificate chain and identity. For the specific situation, certificate auto-renewal never occurs because the original enrollment identity was disabled or its renewal service is unreachable.

B:

Extend all BYOD certificates forever to avoid re-enrollment. This action does not repair the identified failure. Expired certificates deny otherwise valid BYOD devices and poor renewal handling increases help-desk failures. Instead, repair eligible renewal or re-enroll securely then verify the new certificate chain and identity. For the specific situation, certificate auto-renewal never occurs because the original enrollment identity was disabled or its renewal service is unreachable.

D:

Disable certificate expiry validation across every PSN. This action does not repair the identified failure. Expired certificates deny otherwise valid BYOD devices and poor renewal handling increases help-desk failures. Instead, repair eligible renewal or re-enroll securely then verify the new certificate chain and identity. For the specific situation, certificate auto-renewal never occurs because the original enrollment identity was disabled or its renewal service is unreachable.

Question 911

A stolen employee phone has an unexpired issued certificate and must be barred from future access. What action addresses this authenticated network-access scenario?

  1. Assume a signed certificate is valid forever regardless of revocation.
  2. Use supported certificate revocation and endpoint block controls consistent with policy and verify denial.
  3. Give the recovered phone's certificate to another employee to retain access.
  4. Delete the guest portal theme to revoke a corporate BYOD certificate.

Explanation

Correct Answer

B:

A certificate can be revoked before expiry and must be evaluated by the intended access policy. For the specific situation, a stolen employee phone has an unexpired issued certificate and must be barred from future access.

Incorrect Answers

A:

This does not implement the required control for BYOD revoked certificate enforcement. For the specific situation, a stolen employee phone has an unexpired issued certificate and must be barred from future access.

C:

Give the recovered phone's certificate to another employee to retain access. This alternative overlooks a required prerequisite or targets the wrong function. A certificate can be revoked before expiry and must be evaluated by the intended access policy. The relevant evidence is certificate serial and issuer, CRL or OCSP status, My Devices block state, EAP failure and NAD session. For the specific situation, a stolen employee phone has an unexpired issued certificate and must be barred from future access.

D:

Delete the guest portal theme to revoke a corporate BYOD certificate. This leaves the original requirement unresolved. A lost device may continue authenticating with a valid-looking certificate if revocation is ignored. Instead the intended policy action is use supported certificate revocation and endpoint block controls consistent with policy and verify denial. For the specific situation, a stolen employee phone has an unexpired issued certificate and must be barred from future access.

Question 912

A stolen employee phone has an unexpired issued certificate and must be barred from future access. What verification should the engineer use before declaring success?

  1. A successful ICMP echo that does not test the required identity-service workflow.
  2. A browser theme label without a current authorization trace.
  3. Certificate serial and issuer, CRL or OCSP status, My Devices block state, EAP failure and NAD session.
  4. An old diagram with no RADIUS, TACACS+ or endpoint-session evidence.

Explanation

Correct Answer

C:

A certificate can be revoked before expiry and must be evaluated by the intended access policy. These observations directly establish the result of BYOD revoked certificate enforcement for the described endpoint or network device.

Incorrect Answers

A:

A successful ICMP echo that does not test the required identity-service workflow. This observation cannot verify BYOD revoked certificate enforcement. Check certificate serial and issuer, CRL or OCSP status, My Devices block state, EAP failure and NAD session. A certificate can be revoked before expiry and must be evaluated by the intended access policy. For the specific situation, a stolen employee phone has an unexpired issued certificate and must be barred from future access.

B:

A browser theme label without a current authorization trace. This observation cannot verify BYOD revoked certificate enforcement. Check certificate serial and issuer, CRL or OCSP status, My Devices block state, EAP failure and NAD session. A certificate can be revoked before expiry and must be evaluated by the intended access policy. For the specific situation, a stolen employee phone has an unexpired issued certificate and must be barred from future access.

D:

An old diagram with no RADIUS, TACACS+ or endpoint-session evidence. This observation cannot verify BYOD revoked certificate enforcement. Check certificate serial and issuer, CRL or OCSP status, My Devices block state, EAP failure and NAD session. A certificate can be revoked before expiry and must be evaluated by the intended access policy. For the specific situation, a stolen employee phone has an unexpired issued certificate and must be barred from future access.

Question 913

A stolen employee phone has an unexpired issued certificate and must be barred from future access. Which underlying service behavior supports the proposed solution?

  1. All Cisco ISE administration and policy personas perform exactly the same service.
  2. A certificate can be revoked before expiry and must be evaluated by the intended access policy.
  3. A captive portal page automatically changes network authorization on every active NAD session without signaling.
  4. A MAC address is a cryptographic proof of endpoint device ownership.

Explanation

Correct Answer

B:

The supported implementation is to use supported certificate revocation and endpoint block controls consistent with policy and verify denial. For the specific situation, a stolen employee phone has an unexpired issued certificate and must be barred from future access.

Incorrect Answers

A:

This generalization is not valid for BYOD revoked certificate enforcement. Instead a certificate can be revoked before expiry and must be evaluated by the intended access policy.

C:

This generalization is not valid for BYOD revoked certificate enforcement. For the specific situation, a stolen employee phone has an unexpired issued certificate and must be barred from future access.

D:

This generalization is not valid for BYOD revoked certificate enforcement. Verify the actual state using certificate serial and issuer, CRL or OCSP status, My Devices block state, EAP failure and NAD session.

Question 914

A stolen employee phone has an unexpired issued certificate and must be barred from future access. An operator proposes the following incorrect shortcut: Assume a signed certificate is valid forever regardless of revocation. Why does that proposed shortcut not satisfy the requirement?

  1. Accurate device accounting automatically created every earlier failed EAP exchange.
  2. Inspecting a correct endpoint certificate generated the original directory outage.
  3. A lost device may continue authenticating with a valid-looking certificate if revocation is ignored.
  4. A justified least-privilege ACL caused every unrelated network authentication fault.

Explanation

Correct Answer

C:

The shortcut is unsuitable because a certificate can be revoked before expiry and must be evaluated by the intended access policy. For the specific situation, a stolen employee phone has an unexpired issued certificate and must be barred from future access.

Incorrect Answers

A:

This unrelated assertion does not explain the BYOD revoked certificate enforcement problem. The relevant risk is that a lost device may continue authenticating with a valid-looking certificate if revocation is ignored.

B:

This unrelated assertion does not explain the BYOD revoked certificate enforcement problem. For the specific situation, a stolen employee phone has an unexpired issued certificate and must be barred from future access.

D:

This unrelated assertion does not explain the BYOD revoked certificate enforcement problem. Check certificate serial and issuer, CRL or OCSP status, My Devices block state, EAP failure and NAD session.

Question 915

A stolen employee phone has an unexpired issued certificate and must be barred from future access. The observed failure is: A lost device may continue authenticating with a valid-looking certificate if revocation is ignored. What recovery action restores supported network-access behavior?

  1. Give the recovered phone's certificate to another employee to retain access.
  2. Delete the guest portal theme to revoke a corporate BYOD certificate.
  3. Revoke the appropriate credential and invalidate active access then test the denied device.
  4. Assume a signed certificate is valid forever regardless of revocation.

Explanation

Correct Answer

C:

A certificate can be revoked before expiry and must be evaluated by the intended access policy. This restores the intended operational behavior for BYOD revoked certificate enforcement.

Incorrect Answers

A:

Give the recovered phone's certificate to another employee to retain access. This action does not repair the identified failure. A lost device may continue authenticating with a valid-looking certificate if revocation is ignored. Instead, revoke the appropriate credential and invalidate active access then test the denied device. For the specific situation, a stolen employee phone has an unexpired issued certificate and must be barred from future access.

B:

Delete the guest portal theme to revoke a corporate BYOD certificate. This action does not repair the identified failure. A lost device may continue authenticating with a valid-looking certificate if revocation is ignored. Instead, revoke the appropriate credential and invalidate active access then test the denied device. For the specific situation, a stolen employee phone has an unexpired issued certificate and must be barred from future access.

D:

Assume a signed certificate is valid forever regardless of revocation. This action does not repair the identified failure. A lost device may continue authenticating with a valid-looking certificate if revocation is ignored. Instead, revoke the appropriate credential and invalidate active access then test the denied device. For the specific situation, a stolen employee phone has an unexpired issued certificate and must be barred from future access.

Question 916

A BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled. What is the BEST supported ISE implementation or corrective action?

  1. In this case, use supported certificate revocation and endpoint block controls consistent with policy and verify denial.
  2. In this case, give the recovered phone's certificate to another employee to retain access.
  3. In this case, delete the guest portal theme to revoke a corporate BYOD certificate.
  4. In this case, assume a signed certificate is valid forever regardless of revocation.

Explanation

Correct Answer

A:

A certificate can be revoked before expiry and must be evaluated by the intended access policy. For the specific situation, a BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled.

Incorrect Answers

B:

Give the recovered phone's certificate to another employee to retain access. This alternative overlooks a required prerequisite or targets the wrong function. A certificate can be revoked before expiry and must be evaluated by the intended access policy. The relevant evidence is certificate serial and issuer, CRL or OCSP status, My Devices block state, EAP failure and NAD session. For the specific situation, a BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled.

C:

Delete the guest portal theme to revoke a corporate BYOD certificate. This leaves the original requirement unresolved. A lost device may continue authenticating with a valid-looking certificate if revocation is ignored. Instead the intended policy action is use supported certificate revocation and endpoint block controls consistent with policy and verify denial. For the specific situation, a BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled.

D:

This does not implement the required control for BYOD revoked certificate enforcement. For the specific situation, a BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled.

Question 917

A BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled. Which evidence BEST verifies the intended operational outcome?

  1. The supporting evidence is a device hostname alone without the policy result or authenticated source.
  2. The supporting evidence is certificate serial and issuer, CRL or OCSP status, My Devices block state, EAP failure and NAD session.
  3. The supporting evidence is a successful ICMP echo that does not test the required identity-service workflow.
  4. The supporting evidence is a browser theme label without a current authorization trace.

Explanation

Correct Answer

B:

A certificate can be revoked before expiry and must be evaluated by the intended access policy. Certificate serial and issuer, CRL or OCSP status, My Devices block state, EAP failure and NAD session.

Incorrect Answers

A:

A device hostname alone without the policy result or authenticated source. This observation cannot verify BYOD revoked certificate enforcement. Check certificate serial and issuer, CRL or OCSP status, My Devices block state, EAP failure and NAD session. A certificate can be revoked before expiry and must be evaluated by the intended access policy. For the specific situation, a BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled.

C:

A successful ICMP echo that does not test the required identity-service workflow. This observation cannot verify BYOD revoked certificate enforcement. Check certificate serial and issuer, CRL or OCSP status, My Devices block state, EAP failure and NAD session. A certificate can be revoked before expiry and must be evaluated by the intended access policy. For the specific situation, a BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled.

D:

A browser theme label without a current authorization trace. This observation cannot verify BYOD revoked certificate enforcement. Check certificate serial and issuer, CRL or OCSP status, My Devices block state, EAP failure and NAD session. A certificate can be revoked before expiry and must be evaluated by the intended access policy. For the specific situation, a BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled.

Question 918

A BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled. Which technical principle BEST explains the required decision?

  1. The governing principle is that a MAC address is a cryptographic proof of endpoint device ownership.
  2. The governing principle is that a certificate can be revoked before expiry and must be evaluated by the intended access policy.
  3. The governing principle is that all Cisco ISE administration and policy personas perform exactly the same service.
  4. The governing principle is that a policy display name alone is the complete source of enforcement state.

Explanation

Correct Answer

B:

The supported implementation is to use supported certificate revocation and endpoint block controls consistent with policy and verify denial. For the specific situation, a BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled.

Incorrect Answers

A:

A MAC address is a cryptographic proof of endpoint device ownership. This generalization is not valid for BYOD revoked certificate enforcement. Instead a certificate can be revoked before expiry and must be evaluated by the intended access policy. Verify the actual state using certificate serial and issuer, CRL or OCSP status, My Devices block state, EAP failure and NAD session. For the specific situation, a BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled.

C:

All Cisco ISE administration and policy personas perform exactly the same service. This generalization is not valid for BYOD revoked certificate enforcement. Instead a certificate can be revoked before expiry and must be evaluated by the intended access policy. Verify the actual state using certificate serial and issuer, CRL or OCSP status, My Devices block state, EAP failure and NAD session. For the specific situation, a BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled.

D:

A policy display name alone is the complete source of enforcement state. This generalization is not valid for BYOD revoked certificate enforcement. Instead a certificate can be revoked before expiry and must be evaluated by the intended access policy. Verify the actual state using certificate serial and issuer, CRL or OCSP status, My Devices block state, EAP failure and NAD session. For the specific situation, a BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled.

Question 919

A BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled. An operator proposes the following incorrect shortcut: Assume a signed certificate is valid forever regardless of revocation. What material risk or failure follows from that shortcut?

  1. The material consequence is that a justified least-privilege ACL caused every unrelated network authentication fault.
  2. The material consequence is that a correctly recorded TACACS command audit caused the preceding security violation.
  3. The material consequence is that a lost device may continue authenticating with a valid-looking certificate if revocation is ignored.
  4. The material consequence is that inspecting a correct endpoint certificate generated the original directory outage.

Explanation

Correct Answer

C:

The shortcut is unsuitable because a certificate can be revoked before expiry and must be evaluated by the intended access policy. For the specific situation, a BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled.

Incorrect Answers

A:

This unrelated assertion does not explain the BYOD revoked certificate enforcement problem. For the specific situation, a BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled.

B:

This unrelated assertion does not explain the BYOD revoked certificate enforcement problem. A correctly recorded TACACS command audit caused the preceding security violation.

D:

This unrelated assertion does not explain the BYOD revoked certificate enforcement problem. Inspecting a correct endpoint certificate generated the original directory outage.

Question 920

A BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled. The observed failure is: A lost device may continue authenticating with a valid-looking certificate if revocation is ignored. Which controlled recovery BEST restores the intended state?

  1. The supported recovery is to delete the guest portal theme to revoke a corporate BYOD certificate.
  2. The supported recovery is to revoke the appropriate credential and invalidate active access then test the denied device.
  3. The supported recovery is to assume a signed certificate is valid forever regardless of revocation.
  4. The supported recovery is to give the recovered phone's certificate to another employee to retain access.

Explanation

Correct Answer

B:

A certificate can be revoked before expiry and must be evaluated by the intended access policy. Recheck certificate serial and issuer, CRL or OCSP status, My Devices block state, EAP failure and NAD session.

Incorrect Answers

A:

Delete the guest portal theme to revoke a corporate BYOD certificate. This action does not repair the identified failure. A lost device may continue authenticating with a valid-looking certificate if revocation is ignored. Instead, revoke the appropriate credential and invalidate active access then test the denied device. For the specific situation, a BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled.

C:

Assume a signed certificate is valid forever regardless of revocation. This action does not repair the identified failure. A lost device may continue authenticating with a valid-looking certificate if revocation is ignored. Instead, revoke the appropriate credential and invalidate active access then test the denied device. For the specific situation, a BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled.

D:

Give the recovered phone's certificate to another employee to retain access. This action does not repair the identified failure. A lost device may continue authenticating with a valid-looking certificate if revocation is ignored. Instead, revoke the appropriate credential and invalidate active access then test the denied device. For the specific situation, a BYOD certificate is revoked but an ISE policy keeps accepting it because revocation status checks are disabled.

Implementing and Configuring Cisco Identity Services Engine (300-715 SISE) (300-715) Practice Tests