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Cisco 300-710 Practice Test 8

Question 70

A firewall service owner escalates the following: A change board approves a firewall insertion based on a lab using different interface modes and does not retest policies after switching the production deployment mode. Which TWO complementary choices provide the most appropriate corrective action and its direct independent verification? Select TWO answers.

  1. Assume every routed-mode NAT operation and route-dependent feature can be transplanted unchanged to any transparent device.
  2. Validate a loop-free transparent insertion, appropriate switch port roles and bridge-group membership before enabling intended inspection policies.
  3. Check platform release documentation, deployability warnings, mode-specific settings and end-to-end translated versus untranslated packet traces.
  4. Verify the chosen Threat Defense version and deployment mode support the proposed NAT and inspection features, then redesign and retest unsupported configurations.
  5. Inspect approved runbook, prechange snapshots, recovery access, lab cutover results and reachability tests after each step.

Explanation

Correct Answers

C:

Direct independent How to verify: Check platform release documentation, deployability warnings, mode-specific settings and end-to-end translated versus untranslated packet traces.

D:

Appropriate implementation: Verify the chosen Threat Defense version and deployment mode support the proposed NAT and inspection features, then redesign and retest unsupported configurations. Case details: A change board approves a firewall insertion based on a lab using different interface modes and does not retest policies after switching the production deployment mode. Governing behavior: Feature support and forwarding semantics may differ by routed or transparent mode, so copying configuration objects is not proof of equivalent functionality.

Incorrect Answers

A:

Unsafe or unsupported shortcut for this firewall scenario: Assume every routed-mode NAT operation and route-dependent feature can be transplanted unchanged to any transparent device.

B:

That option would validate a loop-free transparent insertion, appropriate switch port roles and bridge-group membership before enabling intended inspection policies, but it addresses a different concern. Governing behavior: Feature support and forwarding semantics may differ by routed or transparent mode, so copying configuration objects is not proof of equivalent functionality.

E:

That option would inspect approved runbook, prechange snapshots, recovery access, lab cutover results and reachability tests after each step, but it addresses a different concern. Governing behavior: Feature support and forwarding semantics may differ by routed or transparent mode, so copying configuration objects is not proof of equivalent functionality.

Question 71

An approved maintenance window surfaces this issue: A team changes interface mode on a remote firewall without planning management reachability and loses access before the policy deployment is completed. Which security configuration or operational step BEST addresses the requirement? Select ONE best answer.

  1. Perform a staged change plan with out-of-band recovery, configuration backups, validated target interface setup and explicit failback criteria.
  2. Configure Layer 3 interfaces, appropriate security zones and forward and return routing, then deploy the intended policy after validating topology.
  3. Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks.
  4. Verify the chosen Threat Defense version and deployment mode support the proposed NAT and inspection features, then redesign and retest unsupported configurations.

Explanation

Correct Answer

A:

Appropriate implementation: Perform a staged change plan with out-of-band recovery, configuration backups, validated target interface setup and explicit failback criteria.

Incorrect Answers

B:

That option would configure Layer 3 interfaces, appropriate security zones and forward and return routing, then deploy the intended policy after validating topology, but it addresses a different concern. Governing behavior: A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.

C:

That option would treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks, but it addresses a different concern. Governing behavior: A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.

D:

That option would verify the chosen Threat Defense version and deployment mode support the proposed NAT and inspection features, then redesign and retest unsupported configurations, but it addresses a different concern. Governing behavior: A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.

Question 72

A Secure Firewall deployment change request reports: A team changes interface mode on a remote firewall without planning management reachability and loses access before the policy deployment is completed. Which firewall behavior or technical principle BEST explains the observed condition? Select ONE best answer.

  1. Passive sensing and inline enforcement differ in packet path and potential availability impact; neither automatically provides the other's capability.
  2. Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks.
  3. A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.
  4. A transparent firewall inspects traffic across a Layer 2 segment but must coexist with correct MAC learning and a non-looping switched topology.

Explanation

Correct Answer

C:

Underlying platform principle: A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.

Incorrect Answers

A:

This alternative describes a different control, Passive versus inline inspection disruption planning, rather than this scenario’s Change control when converting firewall deployment mode: Passive sensing and inline enforcement differ in packet path and potential availability impact; neither automatically provides the other's capability.

B:

That option would treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks, but it addresses a different concern. Acceptance criterion: The device returns to managed healthy service and user flows traverse the intended new topology without an unmanaged outage.

D:

This alternative describes a different control, Transparent firewall Layer 2 adjacency and MAC learning, rather than this scenario’s Change control when converting firewall deployment mode: A transparent firewall inspects traffic across a Layer 2 segment but must coexist with correct MAC learning and a non-looping switched topology.

Question 73

An FMC policy and traffic review discovers: A team changes interface mode on a remote firewall without planning management reachability and loses access before the policy deployment is completed. Which specific evidence is MOST useful to confirm the real root cause? Select ONE best answer.

  1. Examine interface membership and BVI addressing, adjacent switches' MAC learning, policy deployment state and authorized management access.
  2. Compare supported sizing and license state with measured CPU, memory, concurrent sessions and actual feature use.
  3. Inspect approved runbook, prechange snapshots, recovery access, lab cutover results and reachability tests after each step.
  4. Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks.

Explanation

Correct Answer

C:

Direct independent verification: Inspect approved runbook, prechange snapshots, recovery access, lab cutover results and reachability tests after each step.

Incorrect Answers

A:

This alternative describes a different control, Transparent firewall bridge groups and BVI design, rather than this scenario’s Change control when converting firewall deployment mode: Examine interface membership and BVI addressing, adjacent switches' MAC learning, policy deployment state and authorized management access.

B:

That option would compare supported sizing and license state with measured CPU, memory, concurrent sessions and actual feature use, but it addresses a different concern. Governing behavior: A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.

D:

Unsafe or unsupported shortcut for this firewall scenario: Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks. It cannot establish the stated security outcome.

Question 74

An engineer validates a Cisco Secure Firewall implementation: A team changes interface mode on a remote firewall without planning management reachability and loses access before the policy deployment is completed. Which observed result BEST confirms that the change meets the intended security requirement? Select ONE best answer.

  1. Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks.
  2. The sensor reports complete expected mirrored sessions while production traffic continues independently of sensor availability.
  3. Established sessions retain correct state and both directions follow a supported inspected path under normal and failover routing.
  4. The device returns to managed healthy service and user flows traverse the intended new topology without an unmanaged outage.

Explanation

Correct Answer

D:

Required acceptance evidence: The device returns to managed healthy service and user flows traverse the intended new topology without an unmanaged outage.

Incorrect Answers

A:

Unsafe or unsupported shortcut for this firewall scenario: Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks. It cannot establish the stated security outcome.

B:

This alternative describes a different control, Passive NGIPS SPAN traffic visibility, rather than this scenario’s Change control when converting firewall deployment mode: The sensor reports complete expected mirrored sessions while production traffic continues independently of sensor availability.

C:

This alternative describes a different control, Traffic flow through routed interfaces with asymmetric return, rather than this scenario’s Change control when converting firewall deployment mode: Established sessions retain correct state and both directions follow a supported inspected path under normal and failover routing.

Question 75

A security operations incident describes: A team changes interface mode on a remote firewall without planning management reachability and loses access before the policy deployment is completed. Which misleading assumption MOST directly causes this issue and must be rejected? Select ONE best answer.

  1. Assume standby status alone proves a peer can safely take over any workload during an unplanned upgrade.
  2. Assume stateful connection inspection never depends on return-path behavior when forward routes appear valid.
  3. Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks.
  4. Assume every ECMP path is permanently usable because route metrics match, even when a next hop stops responding.

Explanation

Correct Answer

C:

Reject the scenario-specific unsafe assumption: Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks. The stated shortcut conflicts with the intended control and its documented verification.

Incorrect Answers

A:

That option would assume standby status alone proves a peer can safely take over any workload during an unplanned upgrade, but it addresses a different concern. Governing behavior: A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.

B:

That option would assume stateful connection inspection never depends on return-path behavior when forward routes appear valid, but it addresses a different concern. Governing behavior: A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.

D:

That option would assume every ECMP path is permanently usable because route metrics match, even when a next hop stops responding, but it addresses a different concern. Governing behavior: A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.

Question 76

During a firewall implementation acceptance test: A production cutover changes from transparent bridging to routed segmentation but skips validation of addresses, routes and impacted rules. Which security configuration or operational step BEST addresses the requirement? Select ONE best answer.

  1. Validate a loop-free transparent insertion, appropriate switch port roles and bridge-group membership before enabling intended inspection policies.
  2. Perform a staged change plan with out-of-band recovery, configuration backups, validated target interface setup and explicit failback criteria.
  3. Verify the chosen Threat Defense version and deployment mode support the proposed NAT and inspection features, then redesign and retest unsupported configurations.
  4. Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks.

Explanation

Correct Answer

B:

Appropriate implementation: Perform a staged change plan with out-of-band recovery, configuration backups, validated target interface setup and explicit failback criteria.

Incorrect Answers

A:

That option would validate a loop-free transparent insertion, appropriate switch port roles and bridge-group membership before enabling intended inspection policies, but it addresses a different concern. Governing behavior: A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.

C:

This alternative describes a different control, Mode-specific NAT and policy assumptions, rather than this scenario’s Change control when converting firewall deployment mode: Verify the chosen Threat Defense version and deployment mode support the proposed NAT and inspection features, then redesign and retest unsupported configurations.

D:

Unsafe or unsupported shortcut for this firewall scenario: Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks. It cannot establish the stated security outcome.

Question 77

A CCNP Security practice scenario presents this condition: A production cutover changes from transparent bridging to routed segmentation but skips validation of addresses, routes and impacted rules. Which firewall behavior or technical principle BEST explains the observed condition? Select ONE best answer.

  1. Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks.
  2. Stateful inspection expects the session and relevant response traffic to be correlated, and unsupported asymmetry can cause drops despite individually valid routes.
  3. ECMP distributes eligible flows across equal-cost routes according to platform hashing and route eligibility, not by creating unlimited failover guarantees.
  4. A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.

Explanation

Correct Answer

D:

Underlying platform principle: A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.

Incorrect Answers

A:

Unsafe or unsupported shortcut for this firewall scenario: Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks. Case details: A production cutover changes from transparent bridging to routed segmentation but skips validation of addresses, routes and impacted rules. Governing behavior: A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.

B:

This alternative describes a different control, Traffic flow through routed interfaces with asymmetric return, rather than this scenario’s Change control when converting firewall deployment mode: Stateful inspection expects the session and relevant response traffic to be correlated, and unsupported asymmetry can cause drops despite individually valid routes.

C:

This alternative describes a different control, ECMP equal-cost multipath routing control, rather than this scenario’s Change control when converting firewall deployment mode: ECMP distributes eligible flows across equal-cost routes according to platform hashing and route eligibility, not by creating unlimited failover guarantees.

Question 78

A firewall service owner escalates the following: A production cutover changes from transparent bridging to routed segmentation but skips validation of addresses, routes and impacted rules. Which specific evidence is MOST useful to confirm the real root cause? Select ONE best answer.

  1. Compare both-direction next-hop paths, connection entries, interface counters, captures and route lookup for representative session tuples.
  2. Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks.
  3. Review logical packet path, appliance mode, interface fail-open or bypass support and controlled downtime tests.
  4. Inspect approved runbook, prechange snapshots, recovery access, lab cutover results and reachability tests after each step.

Explanation

Correct Answer

D:

Direct independent verification: Inspect approved runbook, prechange snapshots, recovery access, lab cutover results and reachability tests after each step.

Incorrect Answers

A:

That option would compare both-direction next-hop paths, connection entries, interface counters, captures and route lookup for representative session tuples, but it addresses a different concern. Governing behavior: A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.

B:

Unsafe or unsupported shortcut for this firewall scenario: Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks. Case details: A production cutover changes from transparent bridging to routed segmentation but skips validation of addresses, routes and impacted rules. Governing behavior: A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit. Approved action: Perform a staged change plan with out-of-band recovery, configuration backups, validated target interface setup and explicit failback criteria. Independent evidence: Inspect approved runbook, prechange snapshots, recovery access, lab cutover results and reachability tests after each step. Acceptance criterion: The device returns to managed healthy service and user flows traverse the intended new topology without an unmanaged outage.

C:

That option would review logical packet path, appliance mode, interface fail-open or bypass support and controlled downtime tests, but it addresses a different concern. Governing behavior: A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.

Question 79

An approved maintenance window surfaces this issue: A production cutover changes from transparent bridging to routed segmentation but skips validation of addresses, routes and impacted rules. Which observed result BEST confirms that the change meets the intended security requirement? Select ONE best answer.

  1. Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks.
  2. The chosen architecture satisfies segmentation and gateway requirements without accidental asymmetric forwarding or duplicate addresses.
  3. Permitted traffic traverses the firewall using planned routes and retains correct separation between routed security zones.
  4. The device returns to managed healthy service and user flows traverse the intended new topology without an unmanaged outage.

Explanation

Correct Answer

D:

Required acceptance evidence: The device returns to managed healthy service and user flows traverse the intended new topology without an unmanaged outage.

Incorrect Answers

A:

Unsafe or unsupported shortcut for this firewall scenario: Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks.

B:

This alternative describes a different control, Routed versus transparent insertion tradeoffs, rather than this scenario’s Change control when converting firewall deployment mode: The chosen architecture satisfies segmentation and gateway requirements without accidental asymmetric forwarding or duplicate addresses.

C:

This alternative describes a different control, Routed firewall interface addressing and routing, rather than this scenario’s Change control when converting firewall deployment mode: Permitted traffic traverses the firewall using planned routes and retains correct separation between routed security zones.

Question 80

A Secure Firewall deployment change request reports: A production cutover changes from transparent bridging to routed segmentation but skips validation of addresses, routes and impacted rules. Which TWO complementary choices provide the most appropriate corrective action and its direct independent verification? Select TWO answers.

  1. Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks.
  2. Choose passive monitoring for out-of-band visibility or supported inline prevention for enforcement, documenting maintenance failure behavior.
  3. Inspect approved runbook, prechange snapshots, recovery access, lab cutover results and reachability tests after each step.
  4. Compare both-direction next-hop paths, connection entries, interface counters, captures and route lookup for representative session tuples.
  5. Perform a staged change plan with out-of-band recovery, configuration backups, validated target interface setup and explicit failback criteria.

Explanation

Correct Answers

C:

Direct independent How to verify: Inspect approved runbook, prechange snapshots, recovery access, lab cutover results and reachability tests after each step.

E:

Appropriate implementation: Perform a staged change plan with out-of-band recovery, configuration backups, validated target interface setup and explicit failback criteria. Case details: A production cutover changes from transparent bridging to routed segmentation but skips validation of addresses, routes and impacted rules. Governing behavior: A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.

Incorrect Answers

A:

Unsafe or unsupported shortcut for this firewall scenario: Treat changing firewall deployment mode as a zero-impact label update that requires no rollback or connectivity checks.

B:

That option would choose passive monitoring for out-of-band visibility or supported inline prevention for enforcement, documenting maintenance failure behavior, but it addresses a different concern. Governing behavior: A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.

D:

This alternative describes a different control, Traffic flow through routed interfaces with asymmetric return, rather than this scenario’s Change control when converting firewall deployment mode: Compare both-direction next-hop paths, connection entries, interface counters, captures and route lookup for representative session tuples.

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