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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 12

Question 110

At Seabright Municipal Works, a team reports that it corrected the following problem affecting public service networks and records: A NAT gateway changes IPsec peer addresses and native ESP traffic fails through the path. Which observation BEST verifies that the correction actually worked?

  1. Credential storage contains salted adaptive hashes rather than plaintext or fast unsalted digests.
  2. The negotiated security associations protect bidirectional traffic and are visible in VPN status.
  3. A controlled pilot negotiates supported algorithms and documents rollback and interoperability.
  4. A tunnel behind NAT establishes and carries protected traffic without ESP being dropped.

Explanation

Correct Answer

D:

A tunnel behind NAT establishes and carries protected traffic without ESP being dropped. This is the decisive evidence for the original problem: A NAT gateway changes IPsec peer addresses and native ESP traffic fails through the path. It verifies that the intended corrective control—Use supported IPsec NAT traversal with UDP encapsulation and matching peer configuration—works in the relevant environment; a completed change ticket alone would not prove the outcome at Seabright Municipal Works.

Incorrect Answers

A:

Credential storage contains salted adaptive hashes rather than plaintext or fast unsalted digests. This would be relevant evidence for a different failure: A security team assumes a fast general-purpose hash can safely protect stored user passwords by itself, usually addressed by Use an adaptive password-hashing function with unique salts and suitable work factors. It does not demonstrate that the current problem at Seabright Municipal Works was resolved. The specific required evidence is: A tunnel behind NAT establishes and carries protected traffic without ESP being dropped.

B:

The negotiated security associations protect bidirectional traffic and are visible in VPN status. This would be relevant evidence for a different failure: Two remote offices require confidentiality and authenticated integrity for traffic traversing the public Internet, usually addressed by Configure standards-based IPsec using appropriate IKE authentication and encryption proposals. It does not demonstrate that the current problem at Seabright Municipal Works was resolved. The specific required evidence is: A tunnel behind NAT establishes and carries protected traffic without ESP being dropped.

C:

A controlled pilot negotiates supported algorithms and documents rollback and interoperability. This would be relevant evidence for a different failure: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment, usually addressed by Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration. It does not demonstrate that the current problem at Seabright Municipal Works was resolved. The specific required evidence is: A tunnel behind NAT establishes and carries protected traffic without ESP being dropped.

Question 111

A security engineer at Frostline Distribution reviews warehouse and transport operations as part of a planned service expansion. The observed problem is: A NAT gateway changes IPsec peer addresses and native ESP traffic fails through the path. What is the BEST corrective action?

  1. Use a cryptographic digest and verified digital signature for integrity and publisher authenticity.
  2. Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration.
  3. Deploy a valid certificate chain for the service name and enforce normal certificate validation.
  4. Use supported IPsec NAT traversal with UDP encapsulation and matching peer configuration.

Explanation

Correct Answer

D:

Use supported IPsec NAT traversal with UDP encapsulation and matching peer configuration. This directly addresses the documented failure: A NAT gateway changes IPsec peer addresses and native ESP traffic fails through the path. For the Frostline Distribution environment, the measurable success condition is: A tunnel behind NAT establishes and carries protected traffic without ESP being dropped. This control targets the specific failure rather than merely changing an unrelated security setting.

Incorrect Answers

A:

Use a cryptographic digest and verified digital signature for integrity and publisher authenticity. That action fits another problem: A file integrity workflow uses reversible encryption as its only proof that a downloaded update was unmodified. It does not directly remediate the current finding at Frostline Distribution: A NAT gateway changes IPsec peer addresses and native ESP traffic fails through the path. The relevant corrective control for this case is: Use supported IPsec NAT traversal with UDP encapsulation and matching peer configuration.

B:

Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration. That action fits another problem: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment. It does not directly remediate the current finding at Frostline Distribution: A NAT gateway changes IPsec peer addresses and native ESP traffic fails through the path. The relevant corrective control for this case is: Use supported IPsec NAT traversal with UDP encapsulation and matching peer configuration.

C:

Deploy a valid certificate chain for the service name and enforce normal certificate validation. That action fits another problem: A site serves TLS with a certificate from an untrusted issuer and clients bypass warnings. It does not directly remediate the current finding at Frostline Distribution: A NAT gateway changes IPsec peer addresses and native ESP traffic fails through the path. The relevant corrective control for this case is: Use supported IPsec NAT traversal with UDP encapsulation and matching peer configuration.

Question 112

During a planned service expansion at Frostline Distribution, engineers say that they resolved this finding: A NAT gateway changes IPsec peer addresses and native ESP traffic fails through the path. Which result provides the STRONGEST acceptance evidence?

  1. Clients reject an untrusted chain while the correct service certificate succeeds.
  2. A controlled pilot negotiates supported algorithms and documents rollback and interoperability.
  3. A tunnel behind NAT establishes and carries protected traffic without ESP being dropped.
  4. A tampered update fails signature validation while the authentic package validates.

Explanation

Correct Answer

C:

A tunnel behind NAT establishes and carries protected traffic without ESP being dropped. This is the decisive evidence for the original problem: A NAT gateway changes IPsec peer addresses and native ESP traffic fails through the path. It verifies that the intended corrective control—Use supported IPsec NAT traversal with UDP encapsulation and matching peer configuration—works in the relevant environment; a completed change ticket alone would not prove the outcome at Frostline Distribution.

Incorrect Answers

A:

Clients reject an untrusted chain while the correct service certificate succeeds. This would be relevant evidence for a different failure: A site serves TLS with a certificate from an untrusted issuer and clients bypass warnings, usually addressed by Deploy a valid certificate chain for the service name and enforce normal certificate validation. It does not demonstrate that the current problem at Frostline Distribution was resolved. The specific required evidence is: A tunnel behind NAT establishes and carries protected traffic without ESP being dropped.

B:

A controlled pilot negotiates supported algorithms and documents rollback and interoperability. This would be relevant evidence for a different failure: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment, usually addressed by Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration. It does not demonstrate that the current problem at Frostline Distribution was resolved. The specific required evidence is: A tunnel behind NAT establishes and carries protected traffic without ESP being dropped.

D:

A tampered update fails signature validation while the authentic package validates. This would be relevant evidence for a different failure: A file integrity workflow uses reversible encryption as its only proof that a downloaded update was unmodified, usually addressed by Use a cryptographic digest and verified digital signature for integrity and publisher authenticity. It does not demonstrate that the current problem at Frostline Distribution was resolved. The specific required evidence is: A tunnel behind NAT establishes and carries protected traffic without ESP being dropped.

Question 113

At Boreal Foods, during a privileged access assessment, the security team is examining supplier systems and production operations. The finding is: A security team assumes a fast general-purpose hash can safely protect stored user passwords by itself. Which action BEST addresses this specific security issue?

  1. Use an adaptive password-hashing function with unique salts and suitable work factors.
  2. Use a cryptographic digest and verified digital signature for integrity and publisher authenticity.
  3. Use supported IPsec NAT traversal with UDP encapsulation and matching peer configuration.
  4. Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration.

Explanation

Correct Answer

A:

Use an adaptive password-hashing function with unique salts and suitable work factors. This directly addresses the documented failure: A security team assumes a fast general-purpose hash can safely protect stored user passwords by itself. For the Boreal Foods environment, the measurable success condition is: Credential storage contains salted adaptive hashes rather than plaintext or fast unsalted digests. This control targets the specific failure rather than merely changing an unrelated security setting.

Incorrect Answers

B:

Use a cryptographic digest and verified digital signature for integrity and publisher authenticity. That action fits another problem: A file integrity workflow uses reversible encryption as its only proof that a downloaded update was unmodified. It does not directly remediate the current finding at Boreal Foods: A security team assumes a fast general-purpose hash can safely protect stored user passwords by itself. The relevant corrective control for this case is: Use an adaptive password-hashing function with unique salts and suitable work factors.

C:

Use supported IPsec NAT traversal with UDP encapsulation and matching peer configuration. That action fits another problem: A NAT gateway changes IPsec peer addresses and native ESP traffic fails through the path. It does not directly remediate the current finding at Boreal Foods: A security team assumes a fast general-purpose hash can safely protect stored user passwords by itself. The relevant corrective control for this case is: Use an adaptive password-hashing function with unique salts and suitable work factors.

D:

Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration. That action fits another problem: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment. It does not directly remediate the current finding at Boreal Foods: A security team assumes a fast general-purpose hash can safely protect stored user passwords by itself. The relevant corrective control for this case is: Use an adaptive password-hashing function with unique salts and suitable work factors.

Question 114

At Boreal Foods, a team reports that it corrected the following problem affecting supplier systems and production operations: A security team assumes a fast general-purpose hash can safely protect stored user passwords by itself. Which observation BEST verifies that the correction actually worked?

  1. A controlled pilot negotiates supported algorithms and documents rollback and interoperability.
  2. A tunnel behind NAT establishes and carries protected traffic without ESP being dropped.
  3. A tampered update fails signature validation while the authentic package validates.
  4. Credential storage contains salted adaptive hashes rather than plaintext or fast unsalted digests.

Explanation

Correct Answer

D:

Credential storage contains salted adaptive hashes rather than plaintext or fast unsalted digests. This is the decisive evidence for the original problem: A security team assumes a fast general-purpose hash can safely protect stored user passwords by itself. It verifies that the intended corrective control—Use an adaptive password-hashing function with unique salts and suitable work factors—works in the relevant environment; a completed change ticket alone would not prove the outcome at Boreal Foods.

Incorrect Answers

A:

A controlled pilot negotiates supported algorithms and documents rollback and interoperability. This would be relevant evidence for a different failure: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment, usually addressed by Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration. It does not demonstrate that the current problem at Boreal Foods was resolved. The specific required evidence is: Credential storage contains salted adaptive hashes rather than plaintext or fast unsalted digests.

B:

A tunnel behind NAT establishes and carries protected traffic without ESP being dropped. This would be relevant evidence for a different failure: A NAT gateway changes IPsec peer addresses and native ESP traffic fails through the path, usually addressed by Use supported IPsec NAT traversal with UDP encapsulation and matching peer configuration. It does not demonstrate that the current problem at Boreal Foods was resolved. The specific required evidence is: Credential storage contains salted adaptive hashes rather than plaintext or fast unsalted digests.

C:

A tampered update fails signature validation while the authentic package validates. This would be relevant evidence for a different failure: A file integrity workflow uses reversible encryption as its only proof that a downloaded update was unmodified, usually addressed by Use a cryptographic digest and verified digital signature for integrity and publisher authenticity. It does not demonstrate that the current problem at Boreal Foods was resolved. The specific required evidence is: Credential storage contains salted adaptive hashes rather than plaintext or fast unsalted digests.

Question 115

A security engineer at Horizon Energy Services reviews remote workforce and operational IT as part of a cross-team security policy review. The observed problem is: A security team assumes a fast general-purpose hash can safely protect stored user passwords by itself. What is the BEST corrective action?

  1. Deploy a valid certificate chain for the service name and enforce normal certificate validation.
  2. Configure standards-based IPsec using appropriate IKE authentication and encryption proposals.
  3. Use a cryptographic digest and verified digital signature for integrity and publisher authenticity.
  4. Use an adaptive password-hashing function with unique salts and suitable work factors.

Explanation

Correct Answer

D:

Use an adaptive password-hashing function with unique salts and suitable work factors. This directly addresses the documented failure: A security team assumes a fast general-purpose hash can safely protect stored user passwords by itself. For the Horizon Energy Services environment, the measurable success condition is: Credential storage contains salted adaptive hashes rather than plaintext or fast unsalted digests. This control targets the specific failure rather than merely changing an unrelated security setting.

Incorrect Answers

A:

Deploy a valid certificate chain for the service name and enforce normal certificate validation. That action fits another problem: A site serves TLS with a certificate from an untrusted issuer and clients bypass warnings. It does not directly remediate the current finding at Horizon Energy Services: A security team assumes a fast general-purpose hash can safely protect stored user passwords by itself. The relevant corrective control for this case is: Use an adaptive password-hashing function with unique salts and suitable work factors.

B:

Configure standards-based IPsec using appropriate IKE authentication and encryption proposals. That action fits another problem: Two remote offices require confidentiality and authenticated integrity for traffic traversing the public Internet. It does not directly remediate the current finding at Horizon Energy Services: A security team assumes a fast general-purpose hash can safely protect stored user passwords by itself. The relevant corrective control for this case is: Use an adaptive password-hashing function with unique salts and suitable work factors.

C:

Use a cryptographic digest and verified digital signature for integrity and publisher authenticity. That action fits another problem: A file integrity workflow uses reversible encryption as its only proof that a downloaded update was unmodified. It does not directly remediate the current finding at Horizon Energy Services: A security team assumes a fast general-purpose hash can safely protect stored user passwords by itself. The relevant corrective control for this case is: Use an adaptive password-hashing function with unique salts and suitable work factors.

Question 116

During a cross-team security policy review at Horizon Energy Services, engineers say that they resolved this finding: A security team assumes a fast general-purpose hash can safely protect stored user passwords by itself. Which result provides the STRONGEST acceptance evidence?

  1. Credential storage contains salted adaptive hashes rather than plaintext or fast unsalted digests.
  2. The negotiated security associations protect bidirectional traffic and are visible in VPN status.
  3. A tampered update fails signature validation while the authentic package validates.
  4. Clients reject an untrusted chain while the correct service certificate succeeds.

Explanation

Correct Answer

A:

Credential storage contains salted adaptive hashes rather than plaintext or fast unsalted digests. This is the decisive evidence for the original problem: A security team assumes a fast general-purpose hash can safely protect stored user passwords by itself. It verifies that the intended corrective control—Use an adaptive password-hashing function with unique salts and suitable work factors—works in the relevant environment; a completed change ticket alone would not prove the outcome at Horizon Energy Services.

Incorrect Answers

B:

The negotiated security associations protect bidirectional traffic and are visible in VPN status. This would be relevant evidence for a different failure: Two remote offices require confidentiality and authenticated integrity for traffic traversing the public Internet, usually addressed by Configure standards-based IPsec using appropriate IKE authentication and encryption proposals. It does not demonstrate that the current problem at Horizon Energy Services was resolved. The specific required evidence is: Credential storage contains salted adaptive hashes rather than plaintext or fast unsalted digests.

C:

A tampered update fails signature validation while the authentic package validates. This would be relevant evidence for a different failure: A file integrity workflow uses reversible encryption as its only proof that a downloaded update was unmodified, usually addressed by Use a cryptographic digest and verified digital signature for integrity and publisher authenticity. It does not demonstrate that the current problem at Horizon Energy Services was resolved. The specific required evidence is: Credential storage contains salted adaptive hashes rather than plaintext or fast unsalted digests.

D:

Clients reject an untrusted chain while the correct service certificate succeeds. This would be relevant evidence for a different failure: A site serves TLS with a certificate from an untrusted issuer and clients bypass warnings, usually addressed by Deploy a valid certificate chain for the service name and enforce normal certificate validation. It does not demonstrate that the current problem at Horizon Energy Services was resolved. The specific required evidence is: Credential storage contains salted adaptive hashes rather than plaintext or fast unsalted digests.

Question 117

At Oak River Energy, during an application modernization project, the security team is examining field operations and service networks. The finding is: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment. Which action BEST addresses this specific security issue?

  1. Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration.
  2. Use an adaptive password-hashing function with unique salts and suitable work factors.
  3. Use a cryptographic digest and verified digital signature for integrity and publisher authenticity.
  4. Deploy a valid certificate chain for the service name and enforce normal certificate validation.

Explanation

Correct Answer

A:

Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration. This directly addresses the documented failure: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment. For the Oak River Energy environment, the measurable success condition is: A controlled pilot negotiates supported algorithms and documents rollback and interoperability. This control targets the specific failure rather than merely changing an unrelated security setting.

Incorrect Answers

B:

Use an adaptive password-hashing function with unique salts and suitable work factors. That action fits another problem: A security team assumes a fast general-purpose hash can safely protect stored user passwords by itself. It does not directly remediate the current finding at Oak River Energy: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment. The relevant corrective control for this case is: Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration.

C:

Use a cryptographic digest and verified digital signature for integrity and publisher authenticity. That action fits another problem: A file integrity workflow uses reversible encryption as its only proof that a downloaded update was unmodified. It does not directly remediate the current finding at Oak River Energy: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment. The relevant corrective control for this case is: Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration.

D:

Deploy a valid certificate chain for the service name and enforce normal certificate validation. That action fits another problem: A site serves TLS with a certificate from an untrusted issuer and clients bypass warnings. It does not directly remediate the current finding at Oak River Energy: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment. The relevant corrective control for this case is: Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration.

Question 118

At Oak River Energy, a team reports that it corrected the following problem affecting field operations and service networks: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment. Which observation BEST verifies that the correction actually worked?

  1. Clients reject an untrusted chain while the correct service certificate succeeds.
  2. Credential storage contains salted adaptive hashes rather than plaintext or fast unsalted digests.
  3. A controlled pilot negotiates supported algorithms and documents rollback and interoperability.
  4. A tampered update fails signature validation while the authentic package validates.

Explanation

Correct Answer

C:

A controlled pilot negotiates supported algorithms and documents rollback and interoperability. This is the decisive evidence for the original problem: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment. It verifies that the intended corrective control—Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration—works in the relevant environment; a completed change ticket alone would not prove the outcome at Oak River Energy.

Incorrect Answers

A:

Clients reject an untrusted chain while the correct service certificate succeeds. This would be relevant evidence for a different failure: A site serves TLS with a certificate from an untrusted issuer and clients bypass warnings, usually addressed by Deploy a valid certificate chain for the service name and enforce normal certificate validation. It does not demonstrate that the current problem at Oak River Energy was resolved. The specific required evidence is: A controlled pilot negotiates supported algorithms and documents rollback and interoperability.

B:

Credential storage contains salted adaptive hashes rather than plaintext or fast unsalted digests. This would be relevant evidence for a different failure: A security team assumes a fast general-purpose hash can safely protect stored user passwords by itself, usually addressed by Use an adaptive password-hashing function with unique salts and suitable work factors. It does not demonstrate that the current problem at Oak River Energy was resolved. The specific required evidence is: A controlled pilot negotiates supported algorithms and documents rollback and interoperability.

D:

A tampered update fails signature validation while the authentic package validates. This would be relevant evidence for a different failure: A file integrity workflow uses reversible encryption as its only proof that a downloaded update was unmodified, usually addressed by Use a cryptographic digest and verified digital signature for integrity and publisher authenticity. It does not demonstrate that the current problem at Oak River Energy was resolved. The specific required evidence is: A controlled pilot negotiates supported algorithms and documents rollback and interoperability.

Question 119

A security engineer at Harbor Point Medical reviews clinical applications and enterprise endpoints as part of a privileged access assessment. The observed problem is: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment. What is the BEST corrective action?

  1. Configure standards-based IPsec using appropriate IKE authentication and encryption proposals.
  2. Deploy a valid certificate chain for the service name and enforce normal certificate validation.
  3. Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration.
  4. Use supported IPsec NAT traversal with UDP encapsulation and matching peer configuration.

Explanation

Correct Answer

C:

Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration. This directly addresses the documented failure: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment. For the Harbor Point Medical environment, the measurable success condition is: A controlled pilot negotiates supported algorithms and documents rollback and interoperability. This control targets the specific failure rather than merely changing an unrelated security setting.

Incorrect Answers

A:

Configure standards-based IPsec using appropriate IKE authentication and encryption proposals. That action fits another problem: Two remote offices require confidentiality and authenticated integrity for traffic traversing the public Internet. It does not directly remediate the current finding at Harbor Point Medical: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment. The relevant corrective control for this case is: Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration.

B:

Deploy a valid certificate chain for the service name and enforce normal certificate validation. That action fits another problem: A site serves TLS with a certificate from an untrusted issuer and clients bypass warnings. It does not directly remediate the current finding at Harbor Point Medical: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment. The relevant corrective control for this case is: Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration.

D:

Use supported IPsec NAT traversal with UDP encapsulation and matching peer configuration. That action fits another problem: A NAT gateway changes IPsec peer addresses and native ESP traffic fails through the path. It does not directly remediate the current finding at Harbor Point Medical: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment. The relevant corrective control for this case is: Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration.

Question 120

During a privileged access assessment at Harbor Point Medical, engineers say that they resolved this finding: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment. Which result provides the STRONGEST acceptance evidence?

  1. The negotiated security associations protect bidirectional traffic and are visible in VPN status.
  2. A controlled pilot negotiates supported algorithms and documents rollback and interoperability.
  3. Clients reject an untrusted chain while the correct service certificate succeeds.
  4. A tunnel behind NAT establishes and carries protected traffic without ESP being dropped.

Explanation

Correct Answer

B:

A controlled pilot negotiates supported algorithms and documents rollback and interoperability. This is the decisive evidence for the original problem: A long-lived cryptographic system has no plan for migration to quantum-resistant key establishment. It verifies that the intended corrective control—Inventory vulnerable algorithms and plan interoperable standards-based post-quantum or hybrid migration—works in the relevant environment; a completed change ticket alone would not prove the outcome at Harbor Point Medical.

Incorrect Answers

A:

The negotiated security associations protect bidirectional traffic and are visible in VPN status. This would be relevant evidence for a different failure: Two remote offices require confidentiality and authenticated integrity for traffic traversing the public Internet, usually addressed by Configure standards-based IPsec using appropriate IKE authentication and encryption proposals. It does not demonstrate that the current problem at Harbor Point Medical was resolved. The specific required evidence is: A controlled pilot negotiates supported algorithms and documents rollback and interoperability.

C:

Clients reject an untrusted chain while the correct service certificate succeeds. This would be relevant evidence for a different failure: A site serves TLS with a certificate from an untrusted issuer and clients bypass warnings, usually addressed by Deploy a valid certificate chain for the service name and enforce normal certificate validation. It does not demonstrate that the current problem at Harbor Point Medical was resolved. The specific required evidence is: A controlled pilot negotiates supported algorithms and documents rollback and interoperability.

D:

A tunnel behind NAT establishes and carries protected traffic without ESP being dropped. This would be relevant evidence for a different failure: A NAT gateway changes IPsec peer addresses and native ESP traffic fails through the path, usually addressed by Use supported IPsec NAT traversal with UDP encapsulation and matching peer configuration. It does not demonstrate that the current problem at Harbor Point Medical was resolved. The specific required evidence is: A controlled pilot negotiates supported algorithms and documents rollback and interoperability.