Cisco 300-710 Practice Test 45
Question 440
A Secure Firewall deployment change request reports: An administrator adds a static route on the firewall but ignores dynamic routing learned over an alternate link, causing wrong egress. Which TWO complementary choices provide the most appropriate corrective action and its direct independent verification? Select TWO answers.
- Inspect system time and NTP reachability, DNS lookups, update attempts and health messages in FMC.
- Inspect route table, egress interface, DSCP handling, policy counters and representative throughput and latency.
- Assume a firewall QoS policy can increase physical link capacity or fix any routing error by itself.
- Align supported routing selection and QoS policies with documented egress, markings and bandwidth behavior.
- Define appropriately scoped correlation rules with relevant event inputs, thresholding and response evaluation.
Explanation
Correct Answers
B:Direct independent How to verify: Inspect route table, egress interface, DSCP handling, policy counters and representative throughput and latency.
D:Appropriate implementation: Align supported routing selection and QoS policies with documented egress, markings and bandwidth behavior. Case details: An administrator adds a static route on the firewall but ignores dynamic routing learned over an alternate link, causing wrong egress. Governing behavior: Routing determines an eligible forwarding path, while QoS classification and queuing require suitable policy and actual congestion context.
Incorrect Answers
A: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: Routing determines an eligible forwarding path, while QoS classification and queuing require suitable policy and actual congestion context.
C:Unsafe or unsupported shortcut for this firewall scenario: Assume a firewall QoS policy can increase physical link capacity or fix any routing error by itself.
E:That option would define appropriately scoped correlation rules with relevant event inputs, thresholding and response evaluation, but it addresses a different concern. Governing behavior: Routing determines an eligible forwarding path, while QoS classification and queuing require suitable policy and actual congestion context.
Question 441
An FMC policy and traffic review discovers: A branch VPN establishes an IKE security association but no protected application traffic crosses because the traffic selectors disagree. Which security configuration or operational step BEST addresses the requirement? Select ONE best answer.
- Define and review reusable network or host objects with scoped references and test impacted policies before edits.
- Align peer authentication, supported proposals, crypto selectors and routes, and test protected flows in both directions.
- Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted.
- Manage supported security intelligence objects and feeds with validation, refresh monitoring and documented exception governance.
Explanation
Correct Answer
B:Appropriate implementation: Align peer authentication, supported proposals, crypto selectors and routes, and test protected flows in both directions.
Incorrect Answers
A: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: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
C:That option would assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted, but it addresses a different concern. Governing behavior: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
D:This alternative describes a different control, Security intelligence and dynamic feed objects, rather than this scenario’s Site-to-site IPsec tunnel negotiation and selectors: Manage supported security intelligence objects and feeds with validation, refresh monitoring and documented exception governance.
Question 442
An engineer validates a Cisco Secure Firewall implementation: A branch VPN establishes an IKE security association but no protected application traffic crosses because the traffic selectors disagree. Which firewall behavior or technical principle BEST explains the observed condition? Select ONE best answer.
- Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted.
- Object reuse improves policy consistency but changes to shared groups propagate to every policy that references them.
- Encrypted Visibility Engine can infer characteristics of encrypted flows from observable attributes; metadata analytics is distinct from full payload decryption.
- IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
Explanation
Correct Answer
D:Underlying platform principle: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
Incorrect Answers
A:That option would assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted, but it addresses a different concern. Approved action: Align peer authentication, supported proposals, crypto selectors and routes, and test protected flows in both directions.
B:This alternative describes a different control, Network and host object definition reuse, rather than this scenario’s Site-to-site IPsec tunnel negotiation and selectors: Object reuse improves policy consistency but changes to shared groups propagate to every policy that references them.
C:This alternative describes a different control, Encrypted Visibility Engine TLS metadata analysis, rather than this scenario’s Site-to-site IPsec tunnel negotiation and selectors: Encrypted Visibility Engine can infer characteristics of encrypted flows from observable attributes; metadata analytics is distinct from full payload decryption.
Question 443
A security operations incident describes: A branch VPN establishes an IKE security association but no protected application traffic crosses because the traffic selectors disagree. Which specific evidence is MOST useful to confirm the real root cause? Select ONE best answer.
- Inspect IKE and IPsec negotiation state, peer identity, selectors, packet encapsulation counters and return routes.
- Inspect DNS policy order, query events, resolver path and lookup outcomes for both blocked and approved domains.
- Inspect feed health, update timestamp, matched indicators, relevant connection blocks and approved exception records.
- Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted.
Explanation
Correct Answer
A:Direct independent verification: Inspect IKE and IPsec negotiation state, peer identity, selectors, packet encapsulation counters and return routes.
Incorrect Answers
B:That option would inspect DNS policy order, query events, resolver path and lookup outcomes for both blocked and approved domains, but it addresses a different concern. Governing behavior: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
C: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: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
D:Unsafe or unsupported shortcut for this firewall scenario: Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted. It cannot establish the stated security outcome.
Question 444
During a firewall implementation acceptance test: A branch VPN establishes an IKE security association but no protected application traffic crosses because the traffic selectors disagree. Which observed result BEST confirms that the change meets the intended security requirement? Select ONE best answer.
- Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted.
- The documented private subnets exchange protected application traffic through a correctly authenticated tunnel.
- An analyst can review authorized events without modifying policies or viewing unrelated restricted infrastructure.
- Documented blocked categories are enforced and approved business destinations remain available within visibility constraints.
Explanation
Correct Answer
B:Required acceptance evidence: The documented private subnets exchange protected application traffic through a correctly authenticated tunnel.
Incorrect Answers
A:Unsafe or unsupported shortcut for this firewall scenario: Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted. It cannot establish the stated security outcome.
C:This alternative describes a different control, FMC user roles and management authorization, rather than this scenario’s Site-to-site IPsec tunnel negotiation and selectors: An analyst can review authorized events without modifying policies or viewing unrelated restricted infrastructure.
D:This alternative describes a different control, URL category application and TLS policy interplay, rather than this scenario’s Site-to-site IPsec tunnel negotiation and selectors: Documented blocked categories are enforced and approved business destinations remain available within visibility constraints.
Question 445
A CCNP Security practice scenario presents this condition: A branch VPN establishes an IKE security association but no protected application traffic crosses because the traffic selectors disagree. Which misleading assumption MOST directly causes this issue and must be rejected? Select ONE best answer.
- Assume a firewall always knows a session's Active Directory group merely from its source IPv4 address.
- Assume enabling host discovery makes every unreachable or unobserved endpoint immediately and perfectly inventoried.
- Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted.
- Assume all TCP port 443 traffic is the same application and no application-level identification is required.
Explanation
Correct Answer
C:Reject the scenario-specific unsafe assumption: Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted. The stated shortcut conflicts with the intended control and its documented verification.
Incorrect Answers
A:That option would assume a firewall always knows a session's Active Directory group merely from its source IPv4 address, but it addresses a different concern. Governing behavior: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
B: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: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
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: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
Question 446
A firewall service owner escalates the following: A VPN cutover fails after peer certificates rotate and operators edit access-control rules instead of validating IKE authentication. Which security configuration or operational step BEST addresses the requirement? Select ONE best answer.
- Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted.
- Align peer authentication, supported proposals, crypto selectors and routes, and test protected flows in both directions.
- Configure appropriate network discovery scope and review observed host attributes, data age and privacy boundaries.
- Configure supported identity sources and mapping methods with suitable user or group rules and verification of mapping freshness.
Explanation
Correct Answer
B:Appropriate implementation: Align peer authentication, supported proposals, crypto selectors and routes, and test protected flows in both directions.
Incorrect Answers
A:Unsafe or unsupported shortcut for this firewall scenario: Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted. 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: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
D:That option would configure supported identity sources and mapping methods with suitable user or group rules and verification of mapping freshness, but it addresses a different concern. Governing behavior: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
Question 447
An approved maintenance window surfaces this issue: A VPN cutover fails after peer certificates rotate and operators edit access-control rules instead of validating IKE authentication. Which firewall behavior or technical principle BEST explains the observed condition? Select ONE best answer.
- IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
- Multidomain management enables delegated administration, but inheritance and shared definitions can affect multiple managed areas.
- Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted.
- Object reuse improves policy consistency but changes to shared groups propagate to every policy that references them.
Explanation
Correct Answer
A:Underlying platform principle: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
Incorrect Answers
B:This alternative describes a different control, FMC domain hierarchy and configuration ownership, rather than this scenario’s Site-to-site IPsec tunnel negotiation and selectors: Multidomain management enables delegated administration, but inheritance and shared definitions can affect multiple managed areas.
C:Unsafe or unsupported shortcut for this firewall scenario: Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted. Case details: A VPN cutover fails after peer certificates rotate and operators edit access-control rules instead of validating IKE authentication. Governing behavior: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
D:This alternative describes a different control, Network and host object definition reuse, rather than this scenario’s Site-to-site IPsec tunnel negotiation and selectors: Object reuse improves policy consistency but changes to shared groups propagate to every policy that references them. Case details: A VPN cutover fails after peer certificates rotate and operators edit access-control rules instead of validating IKE authentication. Governing behavior: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors. Approved action: Align peer authentication, supported proposals, crypto selectors and routes, and test protected flows in both directions. Independent evidence: Inspect IKE and IPsec negotiation state, peer identity, selectors, packet encapsulation counters and return routes. Acceptance criterion: The documented private subnets exchange protected application traffic through a correctly authenticated tunnel.
Question 448
A Secure Firewall deployment change request reports: A VPN cutover fails after peer certificates rotate and operators edit access-control rules instead of validating IKE authentication. Which specific evidence is MOST useful to confirm the real root cause? Select ONE best answer.
- Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted.
- Inspect application event classification, protocol samples, detector definition and policy match results.
- Inspect effective SSL or TLS inspection settings, application identification and URL event fields for test sessions.
- Inspect IKE and IPsec negotiation state, peer identity, selectors, packet encapsulation counters and return routes.
Explanation
Correct Answer
D:Direct independent verification: Inspect IKE and IPsec negotiation state, peer identity, selectors, packet encapsulation counters and return routes.
Incorrect Answers
A:Unsafe or unsupported shortcut for this firewall scenario: Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted. Case details: A VPN cutover fails after peer certificates rotate and operators edit access-control rules instead of validating IKE authentication. Governing behavior: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors. Approved action: Align peer authentication, supported proposals, crypto selectors and routes, and test protected flows in both directions. Independent evidence: Inspect IKE and IPsec negotiation state, peer identity, selectors, packet encapsulation counters and return routes. Acceptance criterion: The documented private subnets exchange protected application traffic through a correctly authenticated tunnel.
B:This alternative describes a different control, Application detector tuning and custom signatures, rather than this scenario’s Site-to-site IPsec tunnel negotiation and selectors: Inspect application event classification, protocol samples, detector definition and policy match results.
C:That option would inspect effective SSL or TLS inspection settings, application identification and URL event fields for test sessions, but it addresses a different concern. Governing behavior: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
Question 449
An FMC policy and traffic review discovers: A VPN cutover fails after peer certificates rotate and operators edit access-control rules instead of validating IKE authentication. Which observed result BEST confirms that the change meets the intended security requirement? Select ONE best answer.
- The documented private subnets exchange protected application traffic through a correctly authenticated tunnel.
- Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted.
- An analyst can review authorized events without modifying policies or viewing unrelated restricted infrastructure.
- Updated objects reflect approved networks and dependent rules continue to enforce the intended segmentation.
Explanation
Correct Answer
A:Required acceptance evidence: The documented private subnets exchange protected application traffic through a correctly authenticated tunnel.
Incorrect Answers
B:Unsafe or unsupported shortcut for this firewall scenario: Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted.
C:This alternative describes a different control, FMC user roles and management authorization, rather than this scenario’s Site-to-site IPsec tunnel negotiation and selectors: An analyst can review authorized events without modifying policies or viewing unrelated restricted infrastructure. Case details: A VPN cutover fails after peer certificates rotate and operators edit access-control rules instead of validating IKE authentication. Governing behavior: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors. Approved action: Align peer authentication, supported proposals, crypto selectors and routes, and test protected flows in both directions. Independent evidence: Inspect IKE and IPsec negotiation state, peer identity, selectors, packet encapsulation counters and return routes. Acceptance criterion: The documented private subnets exchange protected application traffic through a correctly authenticated tunnel.
D:This alternative describes a different control, Network and host object definition reuse, rather than this scenario’s Site-to-site IPsec tunnel negotiation and selectors: Updated objects reflect approved networks and dependent rules continue to enforce the intended segmentation.
Question 450
An engineer validates a Cisco Secure Firewall implementation: A VPN cutover fails after peer certificates rotate and operators edit access-control rules instead of validating IKE authentication. Which TWO complementary choices provide the most appropriate corrective action and its direct independent verification? Select TWO answers.
- Inspect IKE and IPsec negotiation state, peer identity, selectors, packet encapsulation counters and return routes.
- Align peer authentication, supported proposals, crypto selectors and routes, and test protected flows in both directions.
- Inspect ordered rules, source and destination zones, network and port conditions and matching connection events.
- Assign management domains and policy ownership deliberately, accounting for inherited settings and shared object scope.
- Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted.
Explanation
Correct Answers
A:Direct independent How to verify: Inspect IKE and IPsec negotiation state, peer identity, selectors, packet encapsulation counters and return routes.
B:Appropriate implementation: Align peer authentication, supported proposals, crypto selectors and routes, and test protected flows in both directions. Case details: A VPN cutover fails after peer certificates rotate and operators edit access-control rules instead of validating IKE authentication. Governing behavior: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
Incorrect Answers
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: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
D: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: IKE control-plane establishment is distinct from successful IPsec child security associations and the actual traffic forwarding selectors.
E:Unsafe or unsupported shortcut for this firewall scenario: Assume an IKE SA in an up state proves every subnet selector and data-plane flow is successfully encrypted.