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Cisco 300-715 Practice Test 91

Question 900

A supplicant profile trusts too many root authorities and users can be exposed to lookalike network authentication. The observed failure is: Disabling server validation can permit credential disclosure or authentication with rogue infrastructure. Which remediation resolves the underlying fault while maintaining policy?

  1. The supported recovery is to replace trusted-server validation with a visible SSID name alone.
  2. The supported recovery is to tell users to accept any EAP certificate warning on corporate Wi-Fi.
  3. The supported recovery is to assume the client-issued certificate automatically validates the ISE server's hostname.
  4. The supported recovery is to correct trust and server identity settings and test approved and unapproved authentication servers.

Explanation

Correct Answer

D:

Mutual EAP-TLS requires validation of the legitimate server as well as a valid client credential. Recheck supplicant trusted server names, installed CA roots, server certificate, EAP exchange and network selection.

Incorrect Answers

A:

Replace trusted-server validation with a visible SSID name alone. This action does not repair the identified failure. Disabling server validation can permit credential disclosure or authentication with rogue infrastructure. Instead, correct trust and server identity settings and test approved and unapproved authentication servers. For the specific situation, a supplicant profile trusts too many root authorities and users can be exposed to lookalike network authentication.

B:

Tell users to accept any EAP certificate warning on corporate Wi-Fi. This action does not repair the identified failure. Disabling server validation can permit credential disclosure or authentication with rogue infrastructure. Instead, correct trust and server identity settings and test approved and unapproved authentication servers. For the specific situation, a supplicant profile trusts too many root authorities and users can be exposed to lookalike network authentication.

C:

Assume the client-issued certificate automatically validates the ISE server's hostname. This action does not repair the identified failure. Disabling server validation can permit credential disclosure or authentication with rogue infrastructure. Instead, correct trust and server identity settings and test approved and unapproved authentication servers. For the specific situation, a supplicant profile trusts too many root authorities and users can be exposed to lookalike network authentication.

Question 901

An employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status. Which administrator action is appropriate for this ISE access-control problem?

  1. Extend all BYOD certificates forever to avoid re-enrollment.
  2. Disable certificate expiry validation across every PSN.
  3. Assume changing the device registration display name renews its certificate.
  4. Configure supported certificate lifetime and controlled renewal or re-enrollment behavior for BYOD endpoints.

Explanation

Correct Answer

D:

Verify the effect through certificate not-after date, renewal task, CA issuance events, device ownership and new EAP-TLS success. For the specific situation, an employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status.

Incorrect Answers

A:

This does not implement the required control for BYOD certificate lifecycle and renewal. Expired certificates deny otherwise valid BYOD devices and poor renewal handling increases help-desk failures.

B:

Disable certificate expiry validation across every PSN. This alternative overlooks a required prerequisite or targets the wrong function. Certificate-based onboarding has a credential lifecycle independent of employee password validity. The relevant evidence is certificate not-after date, renewal task, CA issuance events, device ownership and new EAP-TLS success. For the specific situation, an employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status.

C:

Expired certificates deny otherwise valid BYOD devices and poor renewal handling increases help-desk failures. Instead the intended policy action is configure supported certificate lifetime and controlled renewal or re-enrollment behavior for BYOD endpoints.

Question 902

An employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status. Which collected records establish that the ISE decision actually took effect?

  1. A switch interface description without any live AAA request or response.
  2. An old diagram with no RADIUS, TACACS+ or endpoint-session evidence.
  3. A current login screenshot from a completely unrelated ISE deployment.
  4. Certificate not-after date, renewal task, CA issuance events, device ownership and new EAP-TLS success.

Explanation

Correct Answer

D:

These observations directly establish the result of BYOD certificate lifecycle and renewal for the described endpoint or network device. For the specific situation, an employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status.

Incorrect Answers

A:

This observation cannot verify BYOD certificate lifecycle and renewal. Check certificate not-after date, renewal task, CA issuance events, device ownership and new EAP-TLS success.

B:

This observation cannot verify BYOD certificate lifecycle and renewal. Certificate-based onboarding has a credential lifecycle independent of employee password validity.

C:

This observation cannot verify BYOD certificate lifecycle and renewal. For the specific situation, an employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status.

Question 903

An employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status. Which statement about the relevant technology is correct?

  1. A captive portal page automatically changes network authorization on every active NAD session without signaling.
  2. Certificate-based onboarding has a credential lifecycle independent of employee password validity.
  3. A successful switch port link signal always proves the device identity and policy were verified.
  4. Every RADIUS Access-Accept grants unrestricted access to all applications.

Explanation

Correct Answer

B:

Verify using certificate not-after date, renewal task, CA issuance events, device ownership and new EAP-TLS success. For the specific situation, an employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status.

Incorrect Answers

A:

A captive portal page automatically changes network authorization on every active NAD session without signaling. This generalization is not valid for BYOD certificate lifecycle and renewal. Instead certificate-based onboarding has a credential lifecycle independent of employee password validity. Verify the actual state using certificate not-after date, renewal task, CA issuance events, device ownership and new EAP-TLS success. For the specific situation, an employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status.

C:

A successful switch port link signal always proves the device identity and policy were verified. This generalization is not valid for BYOD certificate lifecycle and renewal. Instead certificate-based onboarding has a credential lifecycle independent of employee password validity. Verify the actual state using certificate not-after date, renewal task, CA issuance events, device ownership and new EAP-TLS success. For the specific situation, an employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status.

D:

Every RADIUS Access-Accept grants unrestricted access to all applications. This generalization is not valid for BYOD certificate lifecycle and renewal. Instead certificate-based onboarding has a credential lifecycle independent of employee password validity. Verify the actual state using certificate not-after date, renewal task, CA issuance events, device ownership and new EAP-TLS success. For the specific situation, an employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status.

Question 904

An employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status. An operator proposes the following incorrect shortcut: Extend all BYOD certificates forever to avoid re-enrollment. What specific security or operational failure should be anticipated?

  1. Reading the authentication event report caused the original network access outage.
  2. The only result is an unrelated portal background color change.
  3. Accurate device accounting automatically created every earlier failed EAP exchange.
  4. Expired certificates deny otherwise valid BYOD devices and poor renewal handling increases help-desk failures.

Explanation

Correct Answer

D:

The shortcut is unsuitable because certificate-based onboarding has a credential lifecycle independent of employee password validity. For the specific situation, an employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status.

Incorrect Answers

A:

This unrelated assertion does not explain the BYOD certificate lifecycle and renewal problem. The relevant risk is that expired certificates deny otherwise valid BYOD devices and poor renewal handling increases help-desk failures.

B:

This unrelated assertion does not explain the BYOD certificate lifecycle and renewal problem. Check certificate not-after date, renewal task, CA issuance events, device ownership and new EAP-TLS success.

C:

This unrelated assertion does not explain the BYOD certificate lifecycle and renewal problem. For the specific situation, an employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status.

Question 905

An employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status. The observed failure is: Expired certificates deny otherwise valid BYOD devices and poor renewal handling increases help-desk failures. Which remediation resolves the underlying fault while maintaining policy?

  1. Repair eligible renewal or re-enroll securely then verify the new certificate chain and identity.
  2. Disable certificate expiry validation across every PSN.
  3. Assume changing the device registration display name renews its certificate.
  4. Extend all BYOD certificates forever to avoid re-enrollment.

Explanation

Correct Answer

A:

Recheck certificate not-after date, renewal task, CA issuance events, device ownership and new EAP-TLS success. For the specific situation, an employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status.

Incorrect Answers

B:

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, an employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status.

C:

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, an employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status.

D:

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, an employee's personal laptop loses access when the issued BYOD certificate expires despite valid user account status.

Question 906

Certificate auto-renewal never occurs because the original enrollment identity was disabled or its renewal service is unreachable. What action addresses this authenticated network-access scenario?

  1. In this case, disable certificate expiry validation across every PSN.
  2. In this case, configure supported certificate lifetime and controlled renewal or re-enrollment behavior for BYOD endpoints.
  3. In this case, assume changing the device registration display name renews its certificate.
  4. In this case, extend all BYOD certificates forever to avoid re-enrollment.

Explanation

Correct Answer

B:

Verify the effect through 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:

Disable certificate expiry validation across every PSN. This alternative overlooks a required prerequisite or targets the wrong function. Certificate-based onboarding has a credential lifecycle independent of employee password validity. The relevant evidence is 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.

C:

Expired certificates deny otherwise valid BYOD devices and poor renewal handling increases help-desk failures. For the specific situation, certificate auto-renewal never occurs because the original enrollment identity was disabled or its renewal service is unreachable.

D:

This does not implement the required control for BYOD certificate lifecycle and renewal. For the specific situation, certificate auto-renewal never occurs because the original enrollment identity was disabled or its renewal service is unreachable.

Question 907

Certificate auto-renewal never occurs because the original enrollment identity was disabled or its renewal service is unreachable. What verification should the engineer use before declaring success?

  1. The supporting evidence is certificate not-after date, renewal task, CA issuance events, device ownership and new EAP-TLS success.
  2. The supporting evidence is a successful ICMP echo that does not test the required identity-service workflow.
  3. The supporting evidence is a switch interface description without any live AAA request or response.
  4. The supporting evidence is an old diagram with no RADIUS, TACACS+ or endpoint-session evidence.

Explanation

Correct Answer

A:

These observations directly establish the result of BYOD certificate lifecycle and renewal for the described endpoint or network device. For the specific situation, certificate auto-renewal never occurs because the original enrollment identity was disabled or its renewal service is unreachable.

Incorrect Answers

B:

This observation cannot verify BYOD certificate lifecycle and renewal. For the specific situation, certificate auto-renewal never occurs because the original enrollment identity was disabled or its renewal service is unreachable.

C:

This observation cannot verify BYOD certificate lifecycle and renewal. A switch interface description without any live AAA request or response.

D:

This observation cannot verify BYOD certificate lifecycle and renewal. An old diagram with no RADIUS, TACACS+ or endpoint-session evidence.

Question 908

Certificate auto-renewal never occurs because the original enrollment identity was disabled or its renewal service is unreachable. Which underlying service behavior supports the proposed solution?

  1. The governing principle is that every RADIUS Access-Accept grants unrestricted access to all applications.
  2. The governing principle is that a captive portal page automatically changes network authorization on every active NAD session without signaling.
  3. The governing principle is that certificate-based onboarding has a credential lifecycle independent of employee password validity.
  4. The governing principle is that a MAC address is a cryptographic proof of endpoint device ownership.

Explanation

Correct Answer

C:

Verify using 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:

This generalization is not valid for BYOD certificate lifecycle and renewal. Verify the actual state using certificate not-after date, renewal task, CA issuance events, device ownership and new EAP-TLS success.

B:

This generalization is not valid for BYOD certificate lifecycle and renewal. For the specific situation, certificate auto-renewal never occurs because the original enrollment identity was disabled or its renewal service is unreachable.

D:

This generalization is not valid for BYOD certificate lifecycle and renewal. Instead certificate-based onboarding has a credential lifecycle independent of employee password validity.

Question 909

Certificate auto-renewal never occurs because the original enrollment identity was disabled or its renewal service is unreachable. An operator proposes the following incorrect shortcut: Extend all BYOD certificates forever to avoid re-enrollment. Why does that proposed shortcut not satisfy the requirement?

  1. The material consequence is that accurate device accounting automatically created every earlier failed EAP exchange.
  2. The material consequence is that inspecting a correct endpoint certificate generated the original directory outage.
  3. The material consequence is that expired certificates deny otherwise valid BYOD devices and poor renewal handling increases help-desk failures.
  4. The material consequence is that the only result is an unrelated portal background color change.

Explanation

Correct Answer

C:

The shortcut is unsuitable because certificate-based onboarding has a credential lifecycle independent of employee password validity. 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:

This unrelated assertion does not explain the BYOD certificate lifecycle and renewal problem. For the specific situation, certificate auto-renewal never occurs because the original enrollment identity was disabled or its renewal service is unreachable.

B:

This unrelated assertion does not explain the BYOD certificate lifecycle and renewal problem. Inspecting a correct endpoint certificate generated the original directory outage.

D:

This unrelated assertion does not explain the BYOD certificate lifecycle and renewal problem. The only result is an unrelated portal background color change.

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.

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