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Exam Code: 350-701

Exam Name Implementing and Operating Cisco Security Core Technologies

Certification Provider: Cisco

Corresponding Certifications: CCIE Security , CCNP Security

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Cisco 350-701 Practice Test 15

Question 140

During a cross-team security policy review at Prairie Health Network, engineers say that they resolved this finding: A site-to-site tunnel fails because two peers propose incompatible IKE algorithms. Which result provides the STRONGEST acceptance evidence?

  1. Authorized spoke pairs establish protected paths without routing all payload traffic through the hub.
  2. Authorized group members decrypt permitted traffic and a nonmember cannot use group keys.
  3. Both peers establish the tunnel and routing to the authorized remote prefixes works.
  4. IKE negotiation succeeds with mutually accepted secure proposals.

Explanation

Correct Answer

D:

IKE negotiation succeeds with mutually accepted secure proposals. This is the decisive evidence for the original problem: A site-to-site tunnel fails because two peers propose incompatible IKE algorithms. It verifies that the intended corrective control—Align policy proposals for IKE version, cipher, integrity or PRF, DH group, and authentication—works in the relevant environment; a completed change ticket alone would not prove the outcome at Prairie Health Network.

Incorrect Answers

A:

Authorized spoke pairs establish protected paths without routing all payload traffic through the hub. This would be relevant evidence for a different failure: A large hub-and-spoke organization needs dynamically established encrypted spoke-to-spoke paths, usually addressed by Use a supported DMVPN design with controlled NHRP and IPsec protection. It does not demonstrate that the current problem at Prairie Health Network was resolved. The specific required evidence is: IKE negotiation succeeds with mutually accepted secure proposals.

B:

Authorized group members decrypt permitted traffic and a nonmember cannot use group keys. This would be relevant evidence for a different failure: A network design requires encryption of multicast group traffic across a private WAN overlay, usually addressed by Evaluate GETVPN group-key encryption where the transport supports its required routing properties. It does not demonstrate that the current problem at Prairie Health Network was resolved. The specific required evidence is: IKE negotiation succeeds with mutually accepted secure proposals.

C:

Both peers establish the tunnel and routing to the authorized remote prefixes works. This would be relevant evidence for a different failure: Two branches require permanent routed encrypted connectivity with clear tunnel interface monitoring, usually addressed by Select route-based IPsec VPN with virtual tunnel interfaces and appropriate routing controls. It does not demonstrate that the current problem at Prairie Health Network was resolved. The specific required evidence is: IKE negotiation succeeds with mutually accepted secure proposals.

Question 141

At Northshore Hospitality, during an application modernization project, the security team is examining reservation systems and staff endpoints. The finding is: An organization needs a scalable framework integrating remote access, tunnel profiles, and IPsec policy reuse. Which action BEST addresses this specific security issue?

  1. Select route-based IPsec VPN with virtual tunnel interfaces and appropriate routing controls.
  2. Use appropriate FlexVPN virtual tunnel interfaces and IKEv2 profiles for the defined topology.
  3. Use a supported DMVPN design with controlled NHRP and IPsec protection.
  4. Use an authenticated remote-access VPN with per-user authorization and posture policy.

Explanation

Correct Answer

B:

Use appropriate FlexVPN virtual tunnel interfaces and IKEv2 profiles for the defined topology. This directly addresses the documented failure: An organization needs a scalable framework integrating remote access, tunnel profiles, and IPsec policy reuse. For the Northshore Hospitality environment, the measurable success condition is: Configured peers match the intended profile and successfully route authorized encrypted traffic. This control targets the specific failure rather than merely changing an unrelated security setting.

Incorrect Answers

A:

Select route-based IPsec VPN with virtual tunnel interfaces and appropriate routing controls. That action fits another problem: Two branches require permanent routed encrypted connectivity with clear tunnel interface monitoring. It does not directly remediate the current finding at Northshore Hospitality: An organization needs a scalable framework integrating remote access, tunnel profiles, and IPsec policy reuse. The relevant corrective control for this case is: Use appropriate FlexVPN virtual tunnel interfaces and IKEv2 profiles for the defined topology.

C:

Use a supported DMVPN design with controlled NHRP and IPsec protection. That action fits another problem: A large hub-and-spoke organization needs dynamically established encrypted spoke-to-spoke paths. It does not directly remediate the current finding at Northshore Hospitality: An organization needs a scalable framework integrating remote access, tunnel profiles, and IPsec policy reuse. The relevant corrective control for this case is: Use appropriate FlexVPN virtual tunnel interfaces and IKEv2 profiles for the defined topology.

D:

Use an authenticated remote-access VPN with per-user authorization and posture policy. That action fits another problem: A remote employee must connect individually to private applications while traveling, not to a fixed site gateway. It does not directly remediate the current finding at Northshore Hospitality: An organization needs a scalable framework integrating remote access, tunnel profiles, and IPsec policy reuse. The relevant corrective control for this case is: Use appropriate FlexVPN virtual tunnel interfaces and IKEv2 profiles for the defined topology.

Question 142

At Northshore Hospitality, a team reports that it corrected the following problem affecting reservation systems and staff endpoints: An organization needs a scalable framework integrating remote access, tunnel profiles, and IPsec policy reuse. Which observation BEST verifies that the correction actually worked?

  1. Both peers establish the tunnel and routing to the authorized remote prefixes works.
  2. Authorized spoke pairs establish protected paths without routing all payload traffic through the hub.
  3. An approved user connects to intended private resources and an unauthorized device is denied.
  4. Configured peers match the intended profile and successfully route authorized encrypted traffic.

Explanation

Correct Answer

D:

Configured peers match the intended profile and successfully route authorized encrypted traffic. This is the decisive evidence for the original problem: An organization needs a scalable framework integrating remote access, tunnel profiles, and IPsec policy reuse. It verifies that the intended corrective control—Use appropriate FlexVPN virtual tunnel interfaces and IKEv2 profiles for the defined topology—works in the relevant environment; a completed change ticket alone would not prove the outcome at Northshore Hospitality.

Incorrect Answers

A:

Both peers establish the tunnel and routing to the authorized remote prefixes works. This would be relevant evidence for a different failure: Two branches require permanent routed encrypted connectivity with clear tunnel interface monitoring, usually addressed by Select route-based IPsec VPN with virtual tunnel interfaces and appropriate routing controls. It does not demonstrate that the current problem at Northshore Hospitality was resolved. The specific required evidence is: Configured peers match the intended profile and successfully route authorized encrypted traffic.

B:

Authorized spoke pairs establish protected paths without routing all payload traffic through the hub. This would be relevant evidence for a different failure: A large hub-and-spoke organization needs dynamically established encrypted spoke-to-spoke paths, usually addressed by Use a supported DMVPN design with controlled NHRP and IPsec protection. It does not demonstrate that the current problem at Northshore Hospitality was resolved. The specific required evidence is: Configured peers match the intended profile and successfully route authorized encrypted traffic.

C:

An approved user connects to intended private resources and an unauthorized device is denied. This would be relevant evidence for a different failure: A remote employee must connect individually to private applications while traveling, not to a fixed site gateway, usually addressed by Use an authenticated remote-access VPN with per-user authorization and posture policy. It does not demonstrate that the current problem at Northshore Hospitality was resolved. The specific required evidence is: Configured peers match the intended profile and successfully route authorized encrypted traffic.

Question 143

A security engineer at Willowbrook Education reviews student collaboration platforms as part of a privileged access assessment. The observed problem is: An organization needs a scalable framework integrating remote access, tunnel profiles, and IPsec policy reuse. What is the BEST corrective action?

  1. Evaluate GETVPN group-key encryption where the transport supports its required routing properties.
  2. Use appropriate FlexVPN virtual tunnel interfaces and IKEv2 profiles for the defined topology.
  3. Align policy proposals for IKE version, cipher, integrity or PRF, DH group, and authentication.
  4. Use a supported DMVPN design with controlled NHRP and IPsec protection.

Explanation

Correct Answer

B:

Use appropriate FlexVPN virtual tunnel interfaces and IKEv2 profiles for the defined topology. This directly addresses the documented failure: An organization needs a scalable framework integrating remote access, tunnel profiles, and IPsec policy reuse. For the Willowbrook Education environment, the measurable success condition is: Configured peers match the intended profile and successfully route authorized encrypted traffic. This control targets the specific failure rather than merely changing an unrelated security setting.

Incorrect Answers

A:

Evaluate GETVPN group-key encryption where the transport supports its required routing properties. That action fits another problem: A network design requires encryption of multicast group traffic across a private WAN overlay. It does not directly remediate the current finding at Willowbrook Education: An organization needs a scalable framework integrating remote access, tunnel profiles, and IPsec policy reuse. The relevant corrective control for this case is: Use appropriate FlexVPN virtual tunnel interfaces and IKEv2 profiles for the defined topology.

C:

Align policy proposals for IKE version, cipher, integrity or PRF, DH group, and authentication. That action fits another problem: A site-to-site tunnel fails because two peers propose incompatible IKE algorithms. It does not directly remediate the current finding at Willowbrook Education: An organization needs a scalable framework integrating remote access, tunnel profiles, and IPsec policy reuse. The relevant corrective control for this case is: Use appropriate FlexVPN virtual tunnel interfaces and IKEv2 profiles for the defined topology.

D:

Use a supported DMVPN design with controlled NHRP and IPsec protection. That action fits another problem: A large hub-and-spoke organization needs dynamically established encrypted spoke-to-spoke paths. It does not directly remediate the current finding at Willowbrook Education: An organization needs a scalable framework integrating remote access, tunnel profiles, and IPsec policy reuse. The relevant corrective control for this case is: Use appropriate FlexVPN virtual tunnel interfaces and IKEv2 profiles for the defined topology.

Question 144

During a privileged access assessment at Willowbrook Education, engineers say that they resolved this finding: An organization needs a scalable framework integrating remote access, tunnel profiles, and IPsec policy reuse. Which result provides the STRONGEST acceptance evidence?

  1. IKE negotiation succeeds with mutually accepted secure proposals.
  2. Configured peers match the intended profile and successfully route authorized encrypted traffic.
  3. Authorized spoke pairs establish protected paths without routing all payload traffic through the hub.
  4. Authorized group members decrypt permitted traffic and a nonmember cannot use group keys.

Explanation

Correct Answer

B:

Configured peers match the intended profile and successfully route authorized encrypted traffic. This is the decisive evidence for the original problem: An organization needs a scalable framework integrating remote access, tunnel profiles, and IPsec policy reuse. It verifies that the intended corrective control—Use appropriate FlexVPN virtual tunnel interfaces and IKEv2 profiles for the defined topology—works in the relevant environment; a completed change ticket alone would not prove the outcome at Willowbrook Education.

Incorrect Answers

A:

IKE negotiation succeeds with mutually accepted secure proposals. This would be relevant evidence for a different failure: A site-to-site tunnel fails because two peers propose incompatible IKE algorithms, usually addressed by Align policy proposals for IKE version, cipher, integrity or PRF, DH group, and authentication. It does not demonstrate that the current problem at Willowbrook Education was resolved. The specific required evidence is: Configured peers match the intended profile and successfully route authorized encrypted traffic.

C:

Authorized spoke pairs establish protected paths without routing all payload traffic through the hub. This would be relevant evidence for a different failure: A large hub-and-spoke organization needs dynamically established encrypted spoke-to-spoke paths, usually addressed by Use a supported DMVPN design with controlled NHRP and IPsec protection. It does not demonstrate that the current problem at Willowbrook Education was resolved. The specific required evidence is: Configured peers match the intended profile and successfully route authorized encrypted traffic.

D:

Authorized group members decrypt permitted traffic and a nonmember cannot use group keys. This would be relevant evidence for a different failure: A network design requires encryption of multicast group traffic across a private WAN overlay, usually addressed by Evaluate GETVPN group-key encryption where the transport supports its required routing properties. It does not demonstrate that the current problem at Willowbrook Education was resolved. The specific required evidence is: Configured peers match the intended profile and successfully route authorized encrypted traffic.

Question 145

At Silverline Labs, during a scheduled security controls review, the security team is examining product testing and research networks. The finding is: Analysts receive raw indicators with no context, confidence, or lifetime and overblock legitimate domains. Which action BEST addresses this specific security issue?

  1. Package sanitized indicators and relevant context into a controlled STIX/TAXII sharing workflow.
  2. Normalize indicator type, source confidence, timestamps, and expiry before applying policy.
  3. Enforce indicator TTL and automated expiration with safe review of exceptions.
  4. Use trust scoring and analyst validation before promoting indicators to blocking actions.

Explanation

Correct Answer

B:

Normalize indicator type, source confidence, timestamps, and expiry before applying policy. This directly addresses the documented failure: Analysts receive raw indicators with no context, confidence, or lifetime and overblock legitimate domains. For the Silverline Labs environment, the measurable success condition is: Expired or low-confidence indicators are reviewed and high-confidence malicious indicators are enforced. This control targets the specific failure rather than merely changing an unrelated security setting.

Incorrect Answers

A:

Package sanitized indicators and relevant context into a controlled STIX/TAXII sharing workflow. That action fits another problem: Security analytics generates detections but incident responders cannot share actionable findings with partner teams. It does not directly remediate the current finding at Silverline Labs: Analysts receive raw indicators with no context, confidence, or lifetime and overblock legitimate domains. The relevant corrective control for this case is: Normalize indicator type, source confidence, timestamps, and expiry before applying policy.

C:

Enforce indicator TTL and automated expiration with safe review of exceptions. That action fits another problem: A threat feed delivers repeated stale IP indicators long after infrastructure ownership changes. It does not directly remediate the current finding at Silverline Labs: Analysts receive raw indicators with no context, confidence, or lifetime and overblock legitimate domains. The relevant corrective control for this case is: Normalize indicator type, source confidence, timestamps, and expiry before applying policy.

D:

Use trust scoring and analyst validation before promoting indicators to blocking actions. That action fits another problem: External threat intelligence repeatedly causes false positives because ingestion ignores indicator provenance. It does not directly remediate the current finding at Silverline Labs: Analysts receive raw indicators with no context, confidence, or lifetime and overblock legitimate domains. The relevant corrective control for this case is: Normalize indicator type, source confidence, timestamps, and expiry before applying policy.

Question 146

At Silverline Labs, a team reports that it corrected the following problem affecting product testing and research networks: Analysts receive raw indicators with no context, confidence, or lifetime and overblock legitimate domains. Which observation BEST verifies that the correction actually worked?

  1. The expired indicator is withdrawn across consumers without losing the historical investigation.
  2. Authorized recipients ingest structured intelligence without receiving protected case data.
  3. Low-trust indicators are held for review while verified indicators retain source attribution.
  4. Expired or low-confidence indicators are reviewed and high-confidence malicious indicators are enforced.

Explanation

Correct Answer

D:

Expired or low-confidence indicators are reviewed and high-confidence malicious indicators are enforced. This is the decisive evidence for the original problem: Analysts receive raw indicators with no context, confidence, or lifetime and overblock legitimate domains. It verifies that the intended corrective control—Normalize indicator type, source confidence, timestamps, and expiry before applying policy—works in the relevant environment; a completed change ticket alone would not prove the outcome at Silverline Labs.

Incorrect Answers

A:

The expired indicator is withdrawn across consumers without losing the historical investigation. This would be relevant evidence for a different failure: A threat feed delivers repeated stale IP indicators long after infrastructure ownership changes, usually addressed by Enforce indicator TTL and automated expiration with safe review of exceptions. It does not demonstrate that the current problem at Silverline Labs was resolved. The specific required evidence is: Expired or low-confidence indicators are reviewed and high-confidence malicious indicators are enforced.

B:

Authorized recipients ingest structured intelligence without receiving protected case data. This would be relevant evidence for a different failure: Security analytics generates detections but incident responders cannot share actionable findings with partner teams, usually addressed by Package sanitized indicators and relevant context into a controlled STIX/TAXII sharing workflow. It does not demonstrate that the current problem at Silverline Labs was resolved. The specific required evidence is: Expired or low-confidence indicators are reviewed and high-confidence malicious indicators are enforced.

C:

Low-trust indicators are held for review while verified indicators retain source attribution. This would be relevant evidence for a different failure: External threat intelligence repeatedly causes false positives because ingestion ignores indicator provenance, usually addressed by Use trust scoring and analyst validation before promoting indicators to blocking actions. It does not demonstrate that the current problem at Silverline Labs was resolved. The specific required evidence is: Expired or low-confidence indicators are reviewed and high-confidence malicious indicators are enforced.

Question 147

A security engineer at Westlake Retail reviews retail inventory and order processing as part of an application modernization project. The observed problem is: Analysts receive raw indicators with no context, confidence, or lifetime and overblock legitimate domains. What is the BEST corrective action?

  1. Publish a validated indicator through a managed intelligence feed or shared exchange mechanism.
  2. Normalize indicator type, source confidence, timestamps, and expiry before applying policy.
  3. Apply observation and risk-based enforcement stages before enabling destructive feed actions.
  4. Package sanitized indicators and relevant context into a controlled STIX/TAXII sharing workflow.

Explanation

Correct Answer

B:

Normalize indicator type, source confidence, timestamps, and expiry before applying policy. This directly addresses the documented failure: Analysts receive raw indicators with no context, confidence, or lifetime and overblock legitimate domains. For the Westlake Retail environment, the measurable success condition is: Expired or low-confidence indicators are reviewed and high-confidence malicious indicators are enforced. This control targets the specific failure rather than merely changing an unrelated security setting.

Incorrect Answers

A:

Publish a validated indicator through a managed intelligence feed or shared exchange mechanism. That action fits another problem: A SOC identifies a confirmed malicious domain but each security product maintains a different manual blocklist. It does not directly remediate the current finding at Westlake Retail: Analysts receive raw indicators with no context, confidence, or lifetime and overblock legitimate domains. The relevant corrective control for this case is: Normalize indicator type, source confidence, timestamps, and expiry before applying policy.

C:

Apply observation and risk-based enforcement stages before enabling destructive feed actions. That action fits another problem: A team assumes every public indicator can be blocked without evaluating potential business impact. It does not directly remediate the current finding at Westlake Retail: Analysts receive raw indicators with no context, confidence, or lifetime and overblock legitimate domains. The relevant corrective control for this case is: Normalize indicator type, source confidence, timestamps, and expiry before applying policy.

D:

Package sanitized indicators and relevant context into a controlled STIX/TAXII sharing workflow. That action fits another problem: Security analytics generates detections but incident responders cannot share actionable findings with partner teams. It does not directly remediate the current finding at Westlake Retail: Analysts receive raw indicators with no context, confidence, or lifetime and overblock legitimate domains. The relevant corrective control for this case is: Normalize indicator type, source confidence, timestamps, and expiry before applying policy.

Question 148

During an application modernization project at Westlake Retail, engineers say that they resolved this finding: Analysts receive raw indicators with no context, confidence, or lifetime and overblock legitimate domains. Which result provides the STRONGEST acceptance evidence?

  1. Firewalls and DNS security consume the same current indicator and log their enforcement.
  2. Expired or low-confidence indicators are reviewed and high-confidence malicious indicators are enforced.
  3. Authorized recipients ingest structured intelligence without receiving protected case data.
  4. The pilot shows reduced false positives and blocking tied to analyst-approved confidence.

Explanation

Correct Answer

B:

Expired or low-confidence indicators are reviewed and high-confidence malicious indicators are enforced. This is the decisive evidence for the original problem: Analysts receive raw indicators with no context, confidence, or lifetime and overblock legitimate domains. It verifies that the intended corrective control—Normalize indicator type, source confidence, timestamps, and expiry before applying policy—works in the relevant environment; a completed change ticket alone would not prove the outcome at Westlake Retail.

Incorrect Answers

A:

Firewalls and DNS security consume the same current indicator and log their enforcement. This would be relevant evidence for a different failure: A SOC identifies a confirmed malicious domain but each security product maintains a different manual blocklist, usually addressed by Publish a validated indicator through a managed intelligence feed or shared exchange mechanism. It does not demonstrate that the current problem at Westlake Retail was resolved. The specific required evidence is: Expired or low-confidence indicators are reviewed and high-confidence malicious indicators are enforced.

C:

Authorized recipients ingest structured intelligence without receiving protected case data. This would be relevant evidence for a different failure: Security analytics generates detections but incident responders cannot share actionable findings with partner teams, usually addressed by Package sanitized indicators and relevant context into a controlled STIX/TAXII sharing workflow. It does not demonstrate that the current problem at Westlake Retail was resolved. The specific required evidence is: Expired or low-confidence indicators are reviewed and high-confidence malicious indicators are enforced.

D:

The pilot shows reduced false positives and blocking tied to analyst-approved confidence. This would be relevant evidence for a different failure: A team assumes every public indicator can be blocked without evaluating potential business impact, usually addressed by Apply observation and risk-based enforcement stages before enabling destructive feed actions. It does not demonstrate that the current problem at Westlake Retail was resolved. The specific required evidence is: Expired or low-confidence indicators are reviewed and high-confidence malicious indicators are enforced.

Question 149

At Elmwood Manufacturing, during a security incident tabletop exercise, the security team is examining industrial analytics and business systems. The finding is: A SOC identifies a confirmed malicious domain but each security product maintains a different manual blocklist. Which action BEST addresses this specific security issue?

  1. Enforce indicator TTL and automated expiration with safe review of exceptions.
  2. Package sanitized indicators and relevant context into a controlled STIX/TAXII sharing workflow.
  3. Apply observation and risk-based enforcement stages before enabling destructive feed actions.
  4. Publish a validated indicator through a managed intelligence feed or shared exchange mechanism.

Explanation

Correct Answer

D:

Publish a validated indicator through a managed intelligence feed or shared exchange mechanism. This directly addresses the documented failure: A SOC identifies a confirmed malicious domain but each security product maintains a different manual blocklist. For the Elmwood Manufacturing environment, the measurable success condition is: Firewalls and DNS security consume the same current indicator and log their enforcement. This control targets the specific failure rather than merely changing an unrelated security setting.

Incorrect Answers

A:

Enforce indicator TTL and automated expiration with safe review of exceptions. That action fits another problem: A threat feed delivers repeated stale IP indicators long after infrastructure ownership changes. It does not directly remediate the current finding at Elmwood Manufacturing: A SOC identifies a confirmed malicious domain but each security product maintains a different manual blocklist. The relevant corrective control for this case is: Publish a validated indicator through a managed intelligence feed or shared exchange mechanism.

B:

Package sanitized indicators and relevant context into a controlled STIX/TAXII sharing workflow. That action fits another problem: Security analytics generates detections but incident responders cannot share actionable findings with partner teams. It does not directly remediate the current finding at Elmwood Manufacturing: A SOC identifies a confirmed malicious domain but each security product maintains a different manual blocklist. The relevant corrective control for this case is: Publish a validated indicator through a managed intelligence feed or shared exchange mechanism.

C:

Apply observation and risk-based enforcement stages before enabling destructive feed actions. That action fits another problem: A team assumes every public indicator can be blocked without evaluating potential business impact. It does not directly remediate the current finding at Elmwood Manufacturing: A SOC identifies a confirmed malicious domain but each security product maintains a different manual blocklist. The relevant corrective control for this case is: Publish a validated indicator through a managed intelligence feed or shared exchange mechanism.

Question 150

At Elmwood Manufacturing, a team reports that it corrected the following problem affecting industrial analytics and business systems: A SOC identifies a confirmed malicious domain but each security product maintains a different manual blocklist. Which observation BEST verifies that the correction actually worked?

  1. The pilot shows reduced false positives and blocking tied to analyst-approved confidence.
  2. Authorized recipients ingest structured intelligence without receiving protected case data.
  3. Firewalls and DNS security consume the same current indicator and log their enforcement.
  4. The expired indicator is withdrawn across consumers without losing the historical investigation.

Explanation

Correct Answer

C:

Firewalls and DNS security consume the same current indicator and log their enforcement. This is the decisive evidence for the original problem: A SOC identifies a confirmed malicious domain but each security product maintains a different manual blocklist. It verifies that the intended corrective control—Publish a validated indicator through a managed intelligence feed or shared exchange mechanism—works in the relevant environment; a completed change ticket alone would not prove the outcome at Elmwood Manufacturing.

Incorrect Answers

A:

The pilot shows reduced false positives and blocking tied to analyst-approved confidence. This would be relevant evidence for a different failure: A team assumes every public indicator can be blocked without evaluating potential business impact, usually addressed by Apply observation and risk-based enforcement stages before enabling destructive feed actions. It does not demonstrate that the current problem at Elmwood Manufacturing was resolved. The specific required evidence is: Firewalls and DNS security consume the same current indicator and log their enforcement.

B:

Authorized recipients ingest structured intelligence without receiving protected case data. This would be relevant evidence for a different failure: Security analytics generates detections but incident responders cannot share actionable findings with partner teams, usually addressed by Package sanitized indicators and relevant context into a controlled STIX/TAXII sharing workflow. It does not demonstrate that the current problem at Elmwood Manufacturing was resolved. The specific required evidence is: Firewalls and DNS security consume the same current indicator and log their enforcement.

D:

The expired indicator is withdrawn across consumers without losing the historical investigation. This would be relevant evidence for a different failure: A threat feed delivers repeated stale IP indicators long after infrastructure ownership changes, usually addressed by Enforce indicator TTL and automated expiration with safe review of exceptions. It does not demonstrate that the current problem at Elmwood Manufacturing was resolved. The specific required evidence is: Firewalls and DNS security consume the same current indicator and log their enforcement.