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Cisco 300-715 Practice Test 32

Question 310

A conference room hub connects multiple endpoints and the design requires separate authorization per endpoint. The observed failure is: Using single-host where multiple identities are required can force a device off the port or apply incorrect policy. What recovery action restores supported network-access behavior?

  1. The supported recovery is to correct host mode and test the phone plus workstation with independently expected policies.
  2. The supported recovery is to add the phone to an AD group and claim the switch host mode changed.
  3. The supported recovery is to use multi-host unconditional authorization as a substitute for per-device security.
  4. The supported recovery is to assume every port automatically distinguishes phone and desktop with no host-mode settings.

Explanation

Correct Answer

A:

This restores the intended operational behavior for Host modes for phone and PC on one port. For the specific situation, a conference room hub connects multiple endpoints and the design requires separate authorization per endpoint.

Incorrect Answers

B:

Add the phone to an AD group and claim the switch host mode changed. This action does not repair the identified failure. Using single-host where multiple identities are required can force a device off the port or apply incorrect policy. Instead, correct host mode and test the phone plus workstation with independently expected policies. For the specific situation, a conference room hub connects multiple endpoints and the design requires separate authorization per endpoint.

C:

Use multi-host unconditional authorization as a substitute for per-device security. This action does not repair the identified failure. Using single-host where multiple identities are required can force a device off the port or apply incorrect policy. Instead, correct host mode and test the phone plus workstation with independently expected policies. For the specific situation, a conference room hub connects multiple endpoints and the design requires separate authorization per endpoint.

D:

Assume every port automatically distinguishes phone and desktop with no host-mode settings. This action does not repair the identified failure. Using single-host where multiple identities are required can force a device off the port or apply incorrect policy. Instead, correct host mode and test the phone plus workstation with independently expected policies. For the specific situation, a conference room hub connects multiple endpoints and the design requires separate authorization per endpoint.

Question 311

A legacy printer has no 802.1X supplicant but must obtain limited printing service using ISE. What action addresses this authenticated network-access scenario?

  1. Make all MAB clients full administrators on the network.
  2. Use a supported MAB fallback with a registered endpoint identity and narrowly scoped authorization.
  3. Assume a MAC identifier cannot be copied by another device.
  4. Disable all authentication logs for printer ports.

Explanation

Correct Answer

B:

MAB authenticates a MAC identifier as a weaker device-identity signal rather than a cryptographic endpoint credential. For the specific situation, a legacy printer has no 802.1X supplicant but must obtain limited printing service using ISE.

Incorrect Answers

A:

This does not implement the required control for MAC Authentication Bypass for headless printers. Treating an observed MAC as proof of a trustworthy device can admit spoofed endpoints.

C:

Assume a MAC identifier cannot be copied by another device. This alternative overlooks a required prerequisite or targets the wrong function. MAB authenticates a MAC identifier as a weaker device-identity signal rather than a cryptographic endpoint credential. The relevant evidence is switch MAB exchange, endpoint MAC entry, matched auth rule, dACL and resulting access. For the specific situation, a legacy printer has no 802.1X supplicant but must obtain limited printing service using ISE.

D:

Treating an observed MAC as proof of a trustworthy device can admit spoofed endpoints. For the specific situation, a legacy printer has no 802.1X supplicant but must obtain limited printing service using ISE.

Question 312

A legacy printer has no 802.1X supplicant but must obtain limited printing service using ISE. What verification should the engineer use before declaring success?

  1. Switch MAB exchange, endpoint MAC entry, matched auth rule, dACL and resulting access.
  2. A successful ICMP echo that does not test the required identity-service workflow.
  3. A browser theme label without a current authorization trace.
  4. An old diagram with no RADIUS, TACACS+ or endpoint-session evidence.

Explanation

Correct Answer

A:

MAB authenticates a MAC identifier as a weaker device-identity signal rather than a cryptographic endpoint credential. These observations directly establish the result of MAC Authentication Bypass for headless printers for the described endpoint or network device.

Incorrect Answers

B:

This observation cannot verify MAC Authentication Bypass for headless printers. MAB authenticates a MAC identifier as a weaker device-identity signal rather than a cryptographic endpoint credential.

C:

This observation cannot verify MAC Authentication Bypass for headless printers. For the specific situation, a legacy printer has no 802.1X supplicant but must obtain limited printing service using ISE.

D:

This observation cannot verify MAC Authentication Bypass for headless printers. Check switch MAB exchange, endpoint MAC entry, matched auth rule, dACL and resulting access.

Question 313

A legacy printer has no 802.1X supplicant but must obtain limited printing service using ISE. Which underlying service behavior supports the proposed solution?

  1. All Cisco ISE administration and policy personas perform exactly the same service.
  2. A captive portal page automatically changes network authorization on every active NAD session without signaling.
  3. MAB authenticates a MAC identifier as a weaker device-identity signal rather than a cryptographic endpoint credential.
  4. A MAC address is a cryptographic proof of endpoint device ownership.

Explanation

Correct Answer

C:

The supported implementation is to use a supported MAB fallback with a registered endpoint identity and narrowly scoped authorization. For the specific situation, a legacy printer has no 802.1X supplicant but must obtain limited printing service using ISE.

Incorrect Answers

A:

This generalization is not valid for MAC Authentication Bypass for headless printers. Instead mAB authenticates a MAC identifier as a weaker device-identity signal rather than a cryptographic endpoint credential.

B:

This generalization is not valid for MAC Authentication Bypass for headless printers. For the specific situation, a legacy printer has no 802.1X supplicant but must obtain limited printing service using ISE.

D:

This generalization is not valid for MAC Authentication Bypass for headless printers. Verify the actual state using switch MAB exchange, endpoint MAC entry, matched auth rule, dACL and resulting access.

Question 314

A legacy printer has no 802.1X supplicant but must obtain limited printing service using ISE. An operator proposes the following incorrect shortcut: Make all MAB clients full administrators on the network. 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 justified least-privilege ACL caused every unrelated network authentication fault.
  4. Treating an observed MAC as proof of a trustworthy device can admit spoofed endpoints.

Explanation

Correct Answer

D:

The shortcut is unsuitable because mAB authenticates a MAC identifier as a weaker device-identity signal rather than a cryptographic endpoint credential. For the specific situation, a legacy printer has no 802.1X supplicant but must obtain limited printing service using ISE.

Incorrect Answers

A:

This unrelated assertion does not explain the MAC Authentication Bypass for headless printers problem. The relevant risk is that treating an observed MAC as proof of a trustworthy device can admit spoofed endpoints.

B:

This unrelated assertion does not explain the MAC Authentication Bypass for headless printers problem. For the specific situation, a legacy printer has no 802.1X supplicant but must obtain limited printing service using ISE.

C:

This unrelated assertion does not explain the MAC Authentication Bypass for headless printers problem. Check switch MAB exchange, endpoint MAC entry, matched auth rule, dACL and resulting access.

Question 315

A legacy printer has no 802.1X supplicant but must obtain limited printing service using ISE. The observed failure is: Treating an observed MAC as proof of a trustworthy device can admit spoofed endpoints. What recovery action restores supported network-access behavior?

  1. Assume a MAC identifier cannot be copied by another device.
  2. Disable all authentication logs for printer ports.
  3. Make all MAB clients full administrators on the network.
  4. Constrain MAB endpoints to least privilege and migrate capable systems to EAP-TLS.

Explanation

Correct Answer

D:

MAB authenticates a MAC identifier as a weaker device-identity signal rather than a cryptographic endpoint credential. This restores the intended operational behavior for MAC Authentication Bypass for headless printers.

Incorrect Answers

A:

Assume a MAC identifier cannot be copied by another device. This action does not repair the identified failure. Treating an observed MAC as proof of a trustworthy device can admit spoofed endpoints. Instead, constrain MAB endpoints to least privilege and migrate capable systems to EAP-TLS. For the specific situation, a legacy printer has no 802.1X supplicant but must obtain limited printing service using ISE.

B:

Disable all authentication logs for printer ports. This action does not repair the identified failure. Treating an observed MAC as proof of a trustworthy device can admit spoofed endpoints. Instead, constrain MAB endpoints to least privilege and migrate capable systems to EAP-TLS. For the specific situation, a legacy printer has no 802.1X supplicant but must obtain limited printing service using ISE.

C:

Make all MAB clients full administrators on the network. This action does not repair the identified failure. Treating an observed MAC as proof of a trustworthy device can admit spoofed endpoints. Instead, constrain MAB endpoints to least privilege and migrate capable systems to EAP-TLS. For the specific situation, a legacy printer has no 802.1X supplicant but must obtain limited printing service using ISE.

Question 316

An IoT thermostat repeatedly times out on EAP and is expected to use a controlled alternate authentication method. What is the BEST supported ISE implementation or corrective action?

  1. In this case, assume a MAC identifier cannot be copied by another device.
  2. In this case, disable all authentication logs for printer ports.
  3. In this case, make all MAB clients full administrators on the network.
  4. In this case, use a supported MAB fallback with a registered endpoint identity and narrowly scoped authorization.

Explanation

Correct Answer

D:

MAB authenticates a MAC identifier as a weaker device-identity signal rather than a cryptographic endpoint credential. For the specific situation, an IoT thermostat repeatedly times out on EAP and is expected to use a controlled alternate authentication method.

Incorrect Answers

A:

Assume a MAC identifier cannot be copied by another device. This alternative overlooks a required prerequisite or targets the wrong function. MAB authenticates a MAC identifier as a weaker device-identity signal rather than a cryptographic endpoint credential. The relevant evidence is switch MAB exchange, endpoint MAC entry, matched auth rule, dACL and resulting access. For the specific situation, an IoT thermostat repeatedly times out on EAP and is expected to use a controlled alternate authentication method.

B:

Treating an observed MAC as proof of a trustworthy device can admit spoofed endpoints. Instead the intended policy action is use a supported MAB fallback with a registered endpoint identity and narrowly scoped authorization.

C:

This does not implement the required control for MAC Authentication Bypass for headless printers. Use the supported approach: use a supported MAB fallback with a registered endpoint identity and narrowly scoped authorization.

Question 317

An IoT thermostat repeatedly times out on EAP and is expected to use a controlled alternate authentication method. 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 switch MAB exchange, endpoint MAC entry, matched auth rule, dACL and resulting access.
  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:

MAB authenticates a MAC identifier as a weaker device-identity signal rather than a cryptographic endpoint credential. Switch MAB exchange, endpoint MAC entry, matched auth rule, dACL and resulting access.

Incorrect Answers

A:

This observation cannot verify MAC Authentication Bypass for headless printers. A device hostname alone without the policy result or authenticated source.

C:

This observation cannot verify MAC Authentication Bypass for headless printers. A successful ICMP echo that does not test the required identity-service workflow.

D:

This observation cannot verify MAC Authentication Bypass for headless printers. A browser theme label without a current authorization trace.

Question 318

An IoT thermostat repeatedly times out on EAP and is expected to use a controlled alternate authentication method. 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 mAB authenticates a MAC identifier as a weaker device-identity signal rather than a cryptographic endpoint credential.
  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 a supported MAB fallback with a registered endpoint identity and narrowly scoped authorization. For the specific situation, an IoT thermostat repeatedly times out on EAP and is expected to use a controlled alternate authentication method.

Incorrect Answers

A:

This generalization is not valid for MAC Authentication Bypass for headless printers. For the specific situation, an IoT thermostat repeatedly times out on EAP and is expected to use a controlled alternate authentication method.

C:

This generalization is not valid for MAC Authentication Bypass for headless printers. All Cisco ISE administration and policy personas perform exactly the same service.

D:

This generalization is not valid for MAC Authentication Bypass for headless printers. A policy display name alone is the complete source of enforcement state.

Question 319

An IoT thermostat repeatedly times out on EAP and is expected to use a controlled alternate authentication method. An operator proposes the following incorrect shortcut: Make all MAB clients full administrators on the network. 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 treating an observed MAC as proof of a trustworthy device can admit spoofed endpoints.
  3. The material consequence is that a correctly recorded TACACS command audit caused the preceding security violation.
  4. The material consequence is that inspecting a correct endpoint certificate generated the original directory outage.

Explanation

Correct Answer

B:

The shortcut is unsuitable because mAB authenticates a MAC identifier as a weaker device-identity signal rather than a cryptographic endpoint credential. For the specific situation, an IoT thermostat repeatedly times out on EAP and is expected to use a controlled alternate authentication method.

Incorrect Answers

A:

This unrelated assertion does not explain the MAC Authentication Bypass for headless printers problem. For the specific situation, an IoT thermostat repeatedly times out on EAP and is expected to use a controlled alternate authentication method.

C:

This unrelated assertion does not explain the MAC Authentication Bypass for headless printers problem. A correctly recorded TACACS command audit caused the preceding security violation.

D:

This unrelated assertion does not explain the MAC Authentication Bypass for headless printers problem. Inspecting a correct endpoint certificate generated the original directory outage.

Question 320

An IoT thermostat repeatedly times out on EAP and is expected to use a controlled alternate authentication method. The observed failure is: Treating an observed MAC as proof of a trustworthy device can admit spoofed endpoints. Which controlled recovery BEST restores the intended state?

  1. The supported recovery is to disable all authentication logs for printer ports.
  2. The supported recovery is to make all MAB clients full administrators on the network.
  3. The supported recovery is to assume a MAC identifier cannot be copied by another device.
  4. The supported recovery is to constrain MAB endpoints to least privilege and migrate capable systems to EAP-TLS.

Explanation

Correct Answer

D:

MAB authenticates a MAC identifier as a weaker device-identity signal rather than a cryptographic endpoint credential. Recheck switch MAB exchange, endpoint MAC entry, matched auth rule, dACL and resulting access.

Incorrect Answers

A:

Disable all authentication logs for printer ports. This action does not repair the identified failure. Treating an observed MAC as proof of a trustworthy device can admit spoofed endpoints. Instead, constrain MAB endpoints to least privilege and migrate capable systems to EAP-TLS. For the specific situation, an IoT thermostat repeatedly times out on EAP and is expected to use a controlled alternate authentication method.

B:

Make all MAB clients full administrators on the network. This action does not repair the identified failure. Treating an observed MAC as proof of a trustworthy device can admit spoofed endpoints. Instead, constrain MAB endpoints to least privilege and migrate capable systems to EAP-TLS. For the specific situation, an IoT thermostat repeatedly times out on EAP and is expected to use a controlled alternate authentication method.

C:

Assume a MAC identifier cannot be copied by another device. This action does not repair the identified failure. Treating an observed MAC as proof of a trustworthy device can admit spoofed endpoints. Instead, constrain MAB endpoints to least privilege and migrate capable systems to EAP-TLS. For the specific situation, an IoT thermostat repeatedly times out on EAP and is expected to use a controlled alternate authentication method.

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