Cisco 300-710 Practice Test 35
Question 340
During a firewall implementation acceptance test: An analyst trusts an old host operating-system fingerprint even after the asset was rebuilt and reassigned. Which TWO complementary choices provide the most appropriate corrective action and its direct independent verification? Select TWO answers.
- Inspect feed health, update timestamp, matched indicators, relevant connection blocks and approved exception records.
- Configure appropriate network discovery scope and review observed host attributes, data age and privacy boundaries.
- Assume enabling host discovery makes every unreachable or unobserved endpoint immediately and perfectly inventoried.
- Inspect discovery settings, capture visibility, host profile freshness and current packet or endpoint data.
- Define and review reusable network or host objects with scoped references and test impacted policies before edits.
Explanation
Correct Answers
B:Appropriate implementation: Configure appropriate network discovery scope and review observed host attributes, data age and privacy boundaries. Case details: An analyst trusts an old host operating-system fingerprint even after the asset was rebuilt and reassigned. Governing behavior: Network discovery can infer assets from observed traffic but only for monitored coverage and with potentially incomplete or stale attributes.
D:Direct independent How to verify: Inspect discovery settings, capture visibility, host profile freshness and current packet or endpoint data.
Incorrect Answers
A:That option would inspect feed health, update timestamp, matched indicators, relevant connection blocks and approved exception records, but it addresses a different concern. Governing behavior: 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 enabling host discovery makes every unreachable or unobserved endpoint immediately and perfectly inventoried.
E:This alternative describes a different control, Network and host object definition reuse, rather than this scenario’s Network discovery and host profiling scope: Define and review reusable network or host objects with scoped references and test impacted policies before edits.
Question 341
A CCNP Security practice scenario presents this condition: An internal application uses a nonstandard protocol and appears only as unknown traffic, causing an access rule to miss it. Which security configuration or operational step BEST addresses the requirement? Select ONE best answer.
- Use supported application identification or custom detector methods based on recognizable traffic attributes and validate on controlled samples.
- Choose supported URL and application matching with explicit TLS decryption or metadata limitations and test exception scope.
- Assign management domains and policy ownership deliberately, accounting for inherited settings and shared object scope.
- Assume all TCP port 443 traffic is the same application and no application-level identification is required.
Explanation
Correct Answer
A:Appropriate implementation: Use supported application identification or custom detector methods based on recognizable traffic attributes and validate on controlled samples.
Incorrect Answers
B:That option would choose supported URL and application matching with explicit TLS decryption or metadata limitations and test exception scope, but it addresses a different concern. Governing behavior: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
C:That option would assign management domains and policy ownership deliberately, accounting for inherited settings and shared object scope, but it addresses a different concern. Governing behavior: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
D:That option would assume all TCP port 443 traffic is the same application and no application-level identification is required, but it addresses a different concern. Governing behavior: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
Question 342
A firewall service owner escalates the following: An internal application uses a nonstandard protocol and appears only as unknown traffic, causing an access rule to miss it. Which firewall behavior or technical principle BEST explains the observed condition? Select ONE best answer.
- Encrypted traffic may expose less application detail than decrypted traffic, while URL category and application detectors use different identification inputs.
- Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
- Assume all TCP port 443 traffic is the same application and no application-level identification is required.
- A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
Explanation
Correct Answer
D:Underlying platform principle: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
Incorrect Answers
A:This alternative describes a different control, URL category application and TLS policy interplay, rather than this scenario’s Application detector tuning and custom signatures: Encrypted traffic may expose less application detail than decrypted traffic, while URL category and application detectors use different identification inputs.
B:This alternative describes a different control, Identity-based rule mapping and directory sources, rather than this scenario’s Application detector tuning and custom signatures: Identity-aware policy requires reliable association of network sessions to users or groups rather than inferring identity from an IP address alone.
C:Unsafe or unsupported shortcut for this firewall scenario: Assume all TCP port 443 traffic is the same application and no application-level identification is required. It cannot establish the stated security outcome.
Question 343
An approved maintenance window surfaces this issue: An internal application uses a nonstandard protocol and appears only as unknown traffic, causing an access rule to miss it. Which specific evidence is MOST useful to confirm the real root cause? Select ONE best answer.
- Assume all TCP port 443 traffic is the same application and no application-level identification is required.
- Inspect application event classification, protocol samples, detector definition and policy match results.
- Inspect selected network analysis policy, protocol diagnostics, event evidence and controlled traffic samples.
- Inspect effective role assignments, domains, device scope and actual attempted view versus edit actions using test accounts.
Explanation
Correct Answer
B:Direct independent verification: Inspect application event classification, protocol samples, detector definition and policy match results.
Incorrect Answers
A:Unsafe or unsupported shortcut for this firewall scenario: Assume all TCP port 443 traffic is the same application and no application-level identification is required. It cannot establish the stated security outcome.
C:This alternative describes a different control, Network analysis policy protocol preprocessing, rather than this scenario’s Application detector tuning and custom signatures: Inspect selected network analysis policy, protocol diagnostics, event evidence and controlled traffic samples.
D:That option would inspect effective role assignments, domains, device scope and actual attempted view versus edit actions using test accounts, but it addresses a different concern. Governing behavior: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
Question 344
A Secure Firewall deployment change request reports: An internal application uses a nonstandard protocol and appears only as unknown traffic, causing an access rule to miss it. Which observed result BEST confirms that the change meets the intended security requirement? Select ONE best answer.
- Updated objects reflect approved networks and dependent rules continue to enforce the intended segmentation.
- Current authorized indicators are applied with reversible controls and legitimate destinations are not broadly blocked by unreviewed stale data.
- Assume all TCP port 443 traffic is the same application and no application-level identification is required.
- Representative sessions are attributed to the intended application without misclassifying unrelated traffic on the same port.
Explanation
Correct Answer
D:Required acceptance evidence: Representative sessions are attributed to the intended application without misclassifying unrelated traffic on the same port.
Incorrect Answers
A:This alternative describes a different control, Network and host object definition reuse, rather than this scenario’s Application detector tuning and custom signatures: Updated objects reflect approved networks and dependent rules continue to enforce the intended segmentation.
B:This alternative describes a different control, Security intelligence and dynamic feed objects, rather than this scenario’s Application detector tuning and custom signatures: Current authorized indicators are applied with reversible controls and legitimate destinations are not broadly blocked by unreviewed stale data.
C:Unsafe or unsupported shortcut for this firewall scenario: Assume all TCP port 443 traffic is the same application and no application-level identification is required. Case details: An internal application uses a nonstandard protocol and appears only as unknown traffic, causing an access rule to miss it. Governing behavior: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
Question 345
An FMC policy and traffic review discovers: An internal application uses a nonstandard protocol and appears only as unknown traffic, causing an access rule to miss it. Which misleading assumption MOST directly causes this issue and must be rejected? Select ONE best answer.
- Assume all TCP port 443 traffic is the same application and no application-level identification is required.
- Assume changing a shared network object affects only the specific rule currently displayed in the editor.
- Assume enabling host discovery makes every unreachable or unobserved endpoint immediately and perfectly inventoried.
- Assume every HTTPS session exposes its complete URL path to any firewall policy without TLS decryption.
Explanation
Correct Answer
A:Reject the scenario-specific unsafe assumption: Assume all TCP port 443 traffic is the same application and no application-level identification is required. The stated shortcut conflicts with the intended control and its documented verification.
Incorrect Answers
B:That option would assume changing a shared network object affects only the specific rule currently displayed in the editor, but it addresses a different concern. Governing behavior: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
C:That option would assume enabling host discovery makes every unreachable or unobserved endpoint immediately and perfectly inventoried, but it addresses a different concern. Governing behavior: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
D:That option would assume every HTTPS session exposes its complete URL path to any firewall policy without TLS decryption, but it addresses a different concern. Governing behavior: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
Question 346
An engineer validates a Cisco Secure Firewall implementation: An engineer matches a well-known destination port as proof of application identity despite an intentionally repurposed port. Which security configuration or operational step BEST addresses the requirement? Select ONE best answer.
- Manage supported security intelligence objects and feeds with validation, refresh monitoring and documented exception governance.
- Use supported application identification or custom detector methods based on recognizable traffic attributes and validate on controlled samples.
- Review supported Snort intrusion rule conditions and select narrowly scoped tuning, suppression or rule-state changes with tests.
- Assume all TCP port 443 traffic is the same application and no application-level identification is required.
Explanation
Correct Answer
B:Appropriate implementation: Use supported application identification or custom detector methods based on recognizable traffic attributes and validate on controlled samples.
Incorrect Answers
A:This alternative describes a different control, Security intelligence and dynamic feed objects, rather than this scenario’s Application detector tuning and custom signatures: Manage supported security intelligence objects and feeds with validation, refresh monitoring and documented exception governance.
C:That option would review supported Snort intrusion rule conditions and select narrowly scoped tuning, suppression or rule-state changes with tests, but it addresses a different concern. Governing behavior: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
D:Unsafe or unsupported shortcut for this firewall scenario: Assume all TCP port 443 traffic is the same application and no application-level identification is required. It cannot establish the stated security outcome.
Question 347
A security operations incident describes: An engineer matches a well-known destination port as proof of application identity despite an intentionally repurposed port. Which firewall behavior or technical principle BEST explains the observed condition? Select ONE best answer.
- A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
- Assume all TCP port 443 traffic is the same application and no application-level identification is required.
- DNS security decisions operate on name resolution and are not interchangeable with application-layer URL path inspection.
- Certificate trust validates issuer, validity and identity; installing any certificate file does not automatically establish peer trust.
Explanation
Correct Answer
A:Underlying platform principle: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
Incorrect Answers
B:Unsafe or unsupported shortcut for this firewall scenario: Assume all TCP port 443 traffic is the same application and no application-level identification is required. Case details: An engineer matches a well-known destination port as proof of application identity despite an intentionally repurposed port. Governing behavior: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
C:This alternative describes a different control, DNS policy sinkhole and domain security controls, rather than this scenario’s Application detector tuning and custom signatures: DNS security decisions operate on name resolution and are not interchangeable with application-layer URL path inspection.
D:This alternative describes a different control, Device certificates management and trust chains, rather than this scenario’s Application detector tuning and custom signatures: Certificate trust validates issuer, validity and identity; installing any certificate file does not automatically establish peer trust.
Question 348
During a firewall implementation acceptance test: An engineer matches a well-known destination port as proof of application identity despite an intentionally repurposed port. Which specific evidence is MOST useful to confirm the real root cause? Select ONE best answer.
- Assume all TCP port 443 traffic is the same application and no application-level identification is required.
- Inspect selected network analysis policy, protocol diagnostics, event evidence and controlled traffic samples.
- Inspect application event classification, protocol samples, detector definition and policy match results.
- Inspect selected management domain, object ownership, inherited policies and test permissions in the intended child domain.
Explanation
Correct Answer
C:Direct independent verification: Inspect application event classification, protocol samples, detector definition and policy match results.
Incorrect Answers
A:Unsafe or unsupported shortcut for this firewall scenario: Assume all TCP port 443 traffic is the same application and no application-level identification is required. Case details: An engineer matches a well-known destination port as proof of application identity despite an intentionally repurposed port. Governing behavior: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints. Approved action: Use supported application identification or custom detector methods based on recognizable traffic attributes and validate on controlled samples. Independent evidence: Inspect application event classification, protocol samples, detector definition and policy match results. Acceptance criterion: Representative sessions are attributed to the intended application without misclassifying unrelated traffic on the same port.
B:This alternative describes a different control, Network analysis policy protocol preprocessing, rather than this scenario’s Application detector tuning and custom signatures: Inspect selected network analysis policy, protocol diagnostics, event evidence and controlled traffic samples.
D:That option would inspect selected management domain, object ownership, inherited policies and test permissions in the intended child domain, but it addresses a different concern. Governing behavior: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
Question 349
A CCNP Security practice scenario presents this condition: An engineer matches a well-known destination port as proof of application identity despite an intentionally repurposed port. Which observed result BEST confirms that the change meets the intended security requirement? Select ONE best answer.
- Assume all TCP port 443 traffic is the same application and no application-level identification is required.
- Documented blocked categories are enforced and approved business destinations remain available within visibility constraints.
- Representative sessions are attributed to the intended application without misclassifying unrelated traffic on the same port.
- Updated objects reflect approved networks and dependent rules continue to enforce the intended segmentation.
Explanation
Correct Answer
C:Required acceptance evidence: Representative sessions are attributed to the intended application without misclassifying unrelated traffic on the same port.
Incorrect Answers
A:Unsafe or unsupported shortcut for this firewall scenario: Assume all TCP port 443 traffic is the same application and no application-level identification is required.
B:This alternative describes a different control, URL category application and TLS policy interplay, rather than this scenario’s Application detector tuning and custom signatures: Documented blocked categories are enforced and approved business destinations remain available within visibility constraints.
D:This alternative describes a different control, Network and host object definition reuse, rather than this scenario’s Application detector tuning and custom signatures: Updated objects reflect approved networks and dependent rules continue to enforce the intended segmentation. Case details: An engineer matches a well-known destination port as proof of application identity despite an intentionally repurposed port. Governing behavior: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints. Approved action: Use supported application identification or custom detector methods based on recognizable traffic attributes and validate on controlled samples. Independent evidence: Inspect application event classification, protocol samples, detector definition and policy match results. Acceptance criterion: Representative sessions are attributed to the intended application without misclassifying unrelated traffic on the same port.
Question 350
A firewall service owner escalates the following: An engineer matches a well-known destination port as proof of application identity despite an intentionally repurposed port. Which TWO complementary choices provide the most appropriate corrective action and its direct independent verification? Select TWO answers.
- Define appropriately scoped correlation rules with relevant event inputs, thresholding and response evaluation.
- Inspect system time and NTP reachability, DNS lookups, update attempts and health messages in FMC.
- Assume all TCP port 443 traffic is the same application and no application-level identification is required.
- Inspect application event classification, protocol samples, detector definition and policy match results.
- Use supported application identification or custom detector methods based on recognizable traffic attributes and validate on controlled samples.
Explanation
Correct Answers
D:Direct independent How to verify: Inspect application event classification, protocol samples, detector definition and policy match results.
E:Appropriate implementation: Use supported application identification or custom detector methods based on recognizable traffic attributes and validate on controlled samples. Case details: An engineer matches a well-known destination port as proof of application identity despite an intentionally repurposed port. Governing behavior: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
Incorrect Answers
A:That option would define appropriately scoped correlation rules with relevant event inputs, thresholding and response evaluation, but it addresses a different concern. Governing behavior: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
B: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: A service port does not by itself prove the application protocol; application detectors use traffic characteristics with visibility constraints.
C:Unsafe or unsupported shortcut for this firewall scenario: Assume all TCP port 443 traffic is the same application and no application-level identification is required.