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Cisco 300-710 Practice Test 42

Question 410

An engineer validates a Cisco Secure Firewall implementation: An engineer replaces a device certificate but does not include the appropriate trusted issuing chain or check validity dates. Which TWO complementary choices provide the most appropriate corrective action and its direct independent verification? Select TWO answers.

  1. Install a supported identity certificate with correct hostname and issuing trust chain, then verify secure management connections.
  2. Inspect certificate subject and SAN, issuer chain, expiry and secure handshake diagnostics on the relevant management endpoint.
  3. Review user authorization, VPN group policy, client routes, relevant posture integration and application connection results.
  4. Define appropriately scoped correlation rules with relevant event inputs, thresholding and response evaluation.
  5. Assume a certificate is trusted merely because it was imported into a firewall management interface.

Explanation

Correct Answers

A:

Appropriate implementation: Install a supported identity certificate with correct hostname and issuing trust chain, then verify secure management connections. Case details: An engineer replaces a device certificate but does not include the appropriate trusted issuing chain or check validity dates. Governing behavior: Certificate trust validates issuer, validity and identity; installing any certificate file does not automatically establish peer trust.

B:

Direct independent How to verify: Inspect certificate subject and SAN, issuer chain, expiry and secure handshake diagnostics on the relevant management endpoint.

Incorrect Answers

C:

That option would review user authorization, VPN group policy, client routes, relevant posture integration and application connection results, but it addresses a different concern. Governing behavior: Certificate trust validates issuer, validity and identity; installing any certificate file does not automatically establish peer trust.

D:

This alternative describes a different control, Correlation policies for related security events, rather than this scenario’s Device certificates management and trust chains: Define appropriately scoped correlation rules with relevant event inputs, thresholding and response evaluation.

E:

Unsafe or unsupported shortcut for this firewall scenario: Assume a certificate is trusted merely because it was imported into a firewall management interface.

Question 411

A security operations incident describes: A Threat Defense node has exhausted disk resources while FMC health alerts remain disabled and event ingestion degrades. Which security configuration or operational step BEST addresses the requirement? Select ONE best answer.

  1. Assume security events being visible proves that all sensor resources and management processes are healthy.
  2. Define and review reusable network or host objects with scoped references and test impacted policies before edits.
  3. Configure supported health policies and actionable alerts, correlate symptoms with baseline metrics and perform scoped remediation.
  4. Use supported application identification or custom detector methods based on recognizable traffic attributes and validate on controlled samples.

Explanation

Correct Answer

C:

Appropriate implementation: Configure supported health policies and actionable alerts, correlate symptoms with baseline metrics and perform scoped remediation.

Incorrect Answers

A:

Unsafe or unsupported shortcut for this firewall scenario: Assume security events being visible proves that all sensor resources and management processes are healthy. It cannot establish the stated security outcome.

B:

That option would define and review reusable network or host objects with scoped references and test impacted policies before edits, but it addresses a different concern. Governing behavior: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.

D:

That option would use supported application identification or custom detector methods based on recognizable traffic attributes and validate on controlled samples, but it addresses a different concern. Governing behavior: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.

Question 412

During a firewall implementation acceptance test: A Threat Defense node has exhausted disk resources while FMC health alerts remain disabled and event ingestion degrades. Which firewall behavior or technical principle BEST explains the observed condition? Select ONE best answer.

  1. Network discovery can infer assets from observed traffic but only for monitored coverage and with potentially incomplete or stale attributes.
  2. Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.
  3. Assume security events being visible proves that all sensor resources and management processes are healthy.
  4. Encrypted traffic may expose less application detail than decrypted traffic, while URL category and application detectors use different identification inputs.

Explanation

Correct Answer

B:

Underlying platform principle: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.

Incorrect Answers

A:

This alternative describes a different control, Network discovery and host profiling scope, rather than this scenario’s Platform health monitoring thresholds and remediation: Network discovery can infer assets from observed traffic but only for monitored coverage and with potentially incomplete or stale attributes.

C:

Unsafe or unsupported shortcut for this firewall scenario: Assume security events being visible proves that all sensor resources and management processes are healthy. It cannot establish the stated security outcome.

D:

This alternative describes a different control, URL category application and TLS policy interplay, rather than this scenario’s Platform health monitoring thresholds and remediation: Encrypted traffic may expose less application detail than decrypted traffic, while URL category and application detectors use different identification inputs.

Question 413

A CCNP Security practice scenario presents this condition: A Threat Defense node has exhausted disk resources while FMC health alerts remain disabled and event ingestion degrades. Which specific evidence is MOST useful to confirm the real root cause? Select ONE best answer.

  1. Inspect CPU and memory trends, disk and process health, FMC health events and impact on inspection or telemetry.
  2. Compare deployed policy, logging settings, event timestamps, rule identifiers and the actual source and destination tuple.
  3. Inspect system time and NTP reachability, DNS lookups, update attempts and health messages in FMC.
  4. Assume security events being visible proves that all sensor resources and management processes are healthy.

Explanation

Correct Answer

A:

Direct independent verification: Inspect CPU and memory trends, disk and process health, FMC health events and impact on inspection or telemetry.

Incorrect Answers

B:

That option would compare deployed policy, logging settings, event timestamps, rule identifiers and the actual source and destination tuple, but it addresses a different concern. Governing behavior: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.

C:

That option would inspect system time and NTP reachability, DNS lookups, update attempts and health messages in FMC, but it addresses a different concern. Governing behavior: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.

D:

Unsafe or unsupported shortcut for this firewall scenario: Assume security events being visible proves that all sensor resources and management processes are healthy. Case details: A Threat Defense node has exhausted disk resources while FMC health alerts remain disabled and event ingestion degrades. Governing behavior: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.

Question 414

A firewall service owner escalates the following: A Threat Defense node has exhausted disk resources while FMC health alerts remain disabled and event ingestion degrades. Which observed result BEST confirms that the change meets the intended security requirement? Select ONE best answer.

  1. Known malicious domain queries receive the intended security action while authorized internal names still resolve correctly.
  2. Updated objects reflect approved networks and dependent rules continue to enforce the intended segmentation.
  3. Sustained degradations trigger meaningful alerts and corrected resource conditions restore expected policy and event operation.
  4. Assume security events being visible proves that all sensor resources and management processes are healthy.

Explanation

Correct Answer

C:

Required acceptance evidence: Sustained degradations trigger meaningful alerts and corrected resource conditions restore expected policy and event operation.

Incorrect Answers

A:

This alternative describes a different control, DNS policy sinkhole and domain security controls, rather than this scenario’s Platform health monitoring thresholds and remediation: Known malicious domain queries receive the intended security action while authorized internal names still resolve correctly.

B:

This alternative describes a different control, Network and host object definition reuse, rather than this scenario’s Platform health monitoring thresholds and remediation: Updated objects reflect approved networks and dependent rules continue to enforce the intended segmentation.

D:

Unsafe or unsupported shortcut for this firewall scenario: Assume security events being visible proves that all sensor resources and management processes are healthy. Case details: A Threat Defense node has exhausted disk resources while FMC health alerts remain disabled and event ingestion degrades. Governing behavior: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified. Approved action: Configure supported health policies and actionable alerts, correlate symptoms with baseline metrics and perform scoped remediation. Independent evidence: Inspect CPU and memory trends, disk and process health, FMC health events and impact on inspection or telemetry. Acceptance criterion: Sustained degradations trigger meaningful alerts and corrected resource conditions restore expected policy and event operation.

Question 415

An approved maintenance window surfaces this issue: A Threat Defense node has exhausted disk resources while FMC health alerts remain disabled and event ingestion degrades. Which misleading assumption MOST directly causes this issue and must be rejected? Select ONE best answer.

  1. Assume simply enabling correlation automatically identifies all multi-stage incidents even when its event conditions are absent.
  2. Assume every firewall decision produces a complete connection event regardless of logging configuration.
  3. Assume placing a specific block rule anywhere in an ordered access list overrides earlier matching allow rules.
  4. Assume security events being visible proves that all sensor resources and management processes are healthy.

Explanation

Correct Answer

D:

Reject the scenario-specific unsafe assumption: Assume security events being visible proves that all sensor resources and management processes are healthy. The stated shortcut conflicts with the intended control and its documented verification.

Incorrect Answers

A:

That option would assume simply enabling correlation automatically identifies all multi-stage incidents even when its event conditions are absent, but it addresses a different concern. Governing behavior: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.

B:

That option would assume every firewall decision produces a complete connection event regardless of logging configuration, but it addresses a different concern. Governing behavior: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.

C:

That option would assume placing a specific block rule anywhere in an ordered access list overrides earlier matching allow rules, but it addresses a different concern. Governing behavior: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.

Question 416

A Secure Firewall deployment change request reports: A managed firewall reports high CPU during a scan and operators treat a single spike as proof of a persistent hardware fault. Which security configuration or operational step BEST addresses the requirement? Select ONE best answer.

  1. Configure supported health policies and actionable alerts, correlate symptoms with baseline metrics and perform scoped remediation.
  2. Assume security events being visible proves that all sensor resources and management processes are healthy.
  3. Configure appropriate network discovery scope and review observed host attributes, data age and privacy boundaries.
  4. Manage supported security intelligence objects and feeds with validation, refresh monitoring and documented exception governance.

Explanation

Correct Answer

A:

Appropriate implementation: Configure supported health policies and actionable alerts, correlate symptoms with baseline metrics and perform scoped remediation.

Incorrect Answers

B:

Unsafe or unsupported shortcut for this firewall scenario: Assume security events being visible proves that all sensor resources and management processes are healthy. It cannot establish the stated security outcome.

C:

That option would configure appropriate network discovery scope and review observed host attributes, data age and privacy boundaries, but it addresses a different concern. Governing behavior: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.

D:

This alternative describes a different control, Security intelligence and dynamic feed objects, rather than this scenario’s Platform health monitoring thresholds and remediation: Manage supported security intelligence objects and feeds with validation, refresh monitoring and documented exception governance.

Question 417

An FMC policy and traffic review discovers: A managed firewall reports high CPU during a scan and operators treat a single spike as proof of a persistent hardware fault. Which firewall behavior or technical principle BEST explains the observed condition? Select ONE best answer.

  1. Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.
  2. Multidomain management enables delegated administration, but inheritance and shared definitions can affect multiple managed areas.
  3. Encrypted Visibility Engine can infer characteristics of encrypted flows from observable attributes; metadata analytics is distinct from full payload decryption.
  4. Assume security events being visible proves that all sensor resources and management processes are healthy.

Explanation

Correct Answer

A:

Underlying platform principle: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.

Incorrect Answers

B:

This alternative describes a different control, FMC domain hierarchy and configuration ownership, rather than this scenario’s Platform health monitoring thresholds and remediation: Multidomain management enables delegated administration, but inheritance and shared definitions can affect multiple managed areas.

C:

This alternative describes a different control, Encrypted Visibility Engine TLS metadata analysis, rather than this scenario’s Platform health monitoring thresholds and remediation: Encrypted Visibility Engine can infer characteristics of encrypted flows from observable attributes; metadata analytics is distinct from full payload decryption.

D:

Unsafe or unsupported shortcut for this firewall scenario: Assume security events being visible proves that all sensor resources and management processes are healthy. Case details: A managed firewall reports high CPU during a scan and operators treat a single spike as proof of a persistent hardware fault. Governing behavior: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.

Question 418

An engineer validates a Cisco Secure Firewall implementation: A managed firewall reports high CPU during a scan and operators treat a single spike as proof of a persistent hardware fault. Which specific evidence is MOST useful to confirm the real root cause? Select ONE best answer.

  1. Inspect CPU and memory trends, disk and process health, FMC health events and impact on inspection or telemetry.
  2. Assume security events being visible proves that all sensor resources and management processes are healthy.
  3. Inspect ordered rules, source and destination zones, network and port conditions and matching connection events.
  4. Inspect EVE policy, TLS handshake metadata, connection correlation and independent endpoint or intrusion evidence.

Explanation

Correct Answer

A:

Direct independent verification: Inspect CPU and memory trends, disk and process health, FMC health events and impact on inspection or telemetry.

Incorrect Answers

B:

Unsafe or unsupported shortcut for this firewall scenario: Assume security events being visible proves that all sensor resources and management processes are healthy. Case details: A managed firewall reports high CPU during a scan and operators treat a single spike as proof of a persistent hardware fault. Governing behavior: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified. Approved action: Configure supported health policies and actionable alerts, correlate symptoms with baseline metrics and perform scoped remediation. Independent evidence: Inspect CPU and memory trends, disk and process health, FMC health events and impact on inspection or telemetry. Acceptance criterion: Sustained degradations trigger meaningful alerts and corrected resource conditions restore expected policy and event operation.

C:

That option would inspect ordered rules, source and destination zones, network and port conditions and matching connection events, but it addresses a different concern. Governing behavior: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.

D:

That option would inspect EVE policy, TLS handshake metadata, connection correlation and independent endpoint or intrusion evidence, but it addresses a different concern. Governing behavior: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.

Question 419

A security operations incident describes: A managed firewall reports high CPU during a scan and operators treat a single spike as proof of a persistent hardware fault. Which observed result BEST confirms that the change meets the intended security requirement? Select ONE best answer.

  1. Sustained degradations trigger meaningful alerts and corrected resource conditions restore expected policy and event operation.
  2. Representative sessions are attributed to the intended application without misclassifying unrelated traffic on the same port.
  3. Assume security events being visible proves that all sensor resources and management processes are healthy.
  4. An analyst can review authorized events without modifying policies or viewing unrelated restricted infrastructure.

Explanation

Correct Answer

A:

Required acceptance evidence: Sustained degradations trigger meaningful alerts and corrected resource conditions restore expected policy and event operation.

Incorrect Answers

B:

This alternative describes a different control, Application detector tuning and custom signatures, rather than this scenario’s Platform health monitoring thresholds and remediation: Representative sessions are attributed to the intended application without misclassifying unrelated traffic on the same port.

C:

Unsafe or unsupported shortcut for this firewall scenario: Assume security events being visible proves that all sensor resources and management processes are healthy.

D:

This alternative describes a different control, FMC user roles and management authorization, rather than this scenario’s Platform health monitoring thresholds and remediation: An analyst can review authorized events without modifying policies or viewing unrelated restricted infrastructure.

Question 420

During a firewall implementation acceptance test: A managed firewall reports high CPU during a scan and operators treat a single spike as proof of a persistent hardware fault. Which TWO complementary choices provide the most appropriate corrective action and its direct independent verification? Select TWO answers.

  1. Inspect CPU and memory trends, disk and process health, FMC health events and impact on inspection or telemetry.
  2. Manage supported security intelligence objects and feeds with validation, refresh monitoring and documented exception governance.
  3. Assume security events being visible proves that all sensor resources and management processes are healthy.
  4. Inspect correlation policy inputs, event timestamps, host identities, trigger conditions and a representative test sequence.
  5. Configure supported health policies and actionable alerts, correlate symptoms with baseline metrics and perform scoped remediation.

Explanation

Correct Answers

A:

Direct independent How to verify: Inspect CPU and memory trends, disk and process health, FMC health events and impact on inspection or telemetry.

E:

Appropriate implementation: Configure supported health policies and actionable alerts, correlate symptoms with baseline metrics and perform scoped remediation. Case details: A managed firewall reports high CPU during a scan and operators treat a single spike as proof of a persistent hardware fault. Governing behavior: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.

Incorrect Answers

B:

This alternative describes a different control, Security intelligence and dynamic feed objects, rather than this scenario’s Platform health monitoring thresholds and remediation: Manage supported security intelligence objects and feeds with validation, refresh monitoring and documented exception governance.

C:

Unsafe or unsupported shortcut for this firewall scenario: Assume security events being visible proves that all sensor resources and management processes are healthy.

D:

That option would inspect correlation policy inputs, event timestamps, host identities, trigger conditions and a representative test sequence, but it addresses a different concern. Governing behavior: Health telemetry provides operating-state evidence but requires threshold context and trend review before changes are justified.

Securing Networks with Cisco Firewalls (300-710) Practice Tests