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Cisco 300-710 Practice Test 17

Question 160

A Secure Firewall deployment change request reports: A routing design assumes ECMP sends every packet of one TCP connection down a random interface with no state or return-path concerns. Which TWO complementary choices provide the most appropriate corrective action and its direct independent verification? Select TWO answers.

  1. Review route table, equal-cost next hops, neighbor reachability and a set of traceable representative flows.
  2. Review inline interface-pair membership, network diagrams, packet counters on both members and permitted versus test-blocked flows.
  3. Validate a loop-free transparent insertion, appropriate switch port roles and bridge-group membership before enabling intended inspection policies.
  4. Assume every ECMP path is permanently usable because route metrics match, even when a next hop stops responding.
  5. Configure supported equal-cost paths with appropriate next-hop health and ensure a stateful-inspection-compatible return design.

Explanation

Correct Answers

A:

Direct independent How to verify: Review route table, equal-cost next hops, neighbor reachability and a set of traceable representative flows.

E:

Appropriate implementation: Configure supported equal-cost paths with appropriate next-hop health and ensure a stateful-inspection-compatible return design. Case details: A routing design assumes ECMP sends every packet of one TCP connection down a random interface with no state or return-path concerns. Governing behavior: ECMP distributes eligible flows across equal-cost routes according to platform hashing and route eligibility, not by creating unlimited failover guarantees.

Incorrect Answers

B:

That option would review inline interface-pair membership, network diagrams, packet counters on both members and permitted versus test-blocked flows, but it addresses a different concern. Governing behavior: ECMP distributes eligible flows across equal-cost routes according to platform hashing and route eligibility, not by creating unlimited failover guarantees.

C:

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: ECMP distributes eligible flows across equal-cost routes according to platform hashing and route eligibility, not by creating unlimited failover guarantees.

D:

Unsafe or unsupported shortcut for this firewall scenario: Assume every ECMP path is permanently usable because route metrics match, even when a next hop stops responding.

Question 161

An FMC policy and traffic review discovers: A backup route never activates when an upstream service link loses reachability because the connected Ethernet interface remains up. Which security configuration or operational step BEST addresses the requirement? Select ONE best answer.

  1. Assume the physical interface link being up proves the entire upstream routed path is healthy.
  2. Choose passive monitoring for out-of-band visibility or supported inline prevention for enforcement, documenting maintenance failure behavior.
  3. Create supported bridge groups with correct participating interfaces and bridge virtual interface management settings while validating the Layer 2 traffic path.
  4. Use supported static route tracking or SLA monitoring with a monitored destination and a defined fallback route when appropriate.

Explanation

Correct Answer

D:

Appropriate implementation: Use supported static route tracking or SLA monitoring with a monitored destination and a defined fallback route when appropriate.

Incorrect Answers

A:

That option would assume the physical interface link being up proves the entire upstream routed path is healthy, but it addresses a different concern. Governing behavior: A connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

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 connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

C:

That option would create supported bridge groups with correct participating interfaces and bridge virtual interface management settings while validating the Layer 2 traffic path, but it addresses a different concern. Governing behavior: A connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

Question 162

An engineer validates a Cisco Secure Firewall implementation: A backup route never activates when an upstream service link loses reachability because the connected Ethernet interface remains up. Which firewall behavior or technical principle BEST explains the observed condition? Select ONE best answer.

  1. A connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.
  2. Forwarding availability during sensor failure and continued intrusion inspection are separate outcomes that require explicit support and operational alerting.
  3. A deployment-mode conversion can materially alter network connectivity and device management, so it requires more than a cosmetic policy edit.
  4. Assume the physical interface link being up proves the entire upstream routed path is healthy.

Explanation

Correct Answer

A:

Underlying platform principle: A connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

Incorrect Answers

B:

This alternative describes a different control, Inline IPS bypass and health signaling, rather than this scenario’s Static route tracking with monitored target: Forwarding availability during sensor failure and continued intrusion inspection are separate outcomes that require explicit support and operational alerting.

C:

This alternative describes a different control, Change control when converting firewall deployment mode, rather than this scenario’s Static route tracking with monitored target: 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 the physical interface link being up proves the entire upstream routed path is healthy, but it addresses a different concern. Approved action: Use supported static route tracking or SLA monitoring with a monitored destination and a defined fallback route when appropriate.

Question 163

A security operations incident describes: A backup route never activates when an upstream service link loses reachability because the connected Ethernet interface remains up. Which specific evidence is MOST useful to confirm the real root cause? Select ONE best answer.

  1. Inspect probe target, tracking status, route installation and actual forward path before and after a simulated upstream failure.
  2. Examine interface membership and BVI addressing, adjacent switches' MAC learning, policy deployment state and authorized management access.
  3. Assume the physical interface link being up proves the entire upstream routed path is healthy.
  4. Inspect SPAN or TAP source selection, observed flow directions, sensor receive counters and inspection events under a permitted test.

Explanation

Correct Answer

A:

Direct independent verification: Inspect probe target, tracking status, route installation and actual forward path before and after a simulated upstream failure.

Incorrect Answers

B:

This alternative describes a different control, Transparent firewall bridge groups and BVI design, rather than this scenario’s Static route tracking with monitored target: Examine interface membership and BVI addressing, adjacent switches' MAC learning, policy deployment state and authorized management access.

C:

Unsafe or unsupported shortcut for this firewall scenario: Assume the physical interface link being up proves the entire upstream routed path is healthy. It cannot establish the stated security outcome.

D:

That option would inspect SPAN or TAP source selection, observed flow directions, sensor receive counters and inspection events under a permitted test, but it addresses a different concern. Governing behavior: A connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

Question 164

During a firewall implementation acceptance test: A backup route never activates when an upstream service link loses reachability because the connected Ethernet interface remains up. Which observed result BEST confirms that the change meets the intended security requirement? Select ONE best answer.

  1. The device returns to managed healthy service and user flows traverse the intended new topology without an unmanaged outage.
  2. A qualified standby assumes traffic handling upon monitored failure within the approved recovery objective.
  3. The preferred route withdraws on a qualifying monitored failure and returns predictably after recovery.
  4. Assume the physical interface link being up proves the entire upstream routed path is healthy.

Explanation

Correct Answer

C:

Required acceptance evidence: The preferred route withdraws on a qualifying monitored failure and returns predictably after recovery.

Incorrect Answers

A:

This alternative describes a different control, Change control when converting firewall deployment mode, rather than this scenario’s Static route tracking with monitored target: The device returns to managed healthy service and user flows traverse the intended new topology without an unmanaged outage.

B:

This alternative describes a different control, HA active standby roles and failover triggers, rather than this scenario’s Static route tracking with monitored target: A qualified standby assumes traffic handling upon monitored failure within the approved recovery objective.

D:

Unsafe or unsupported shortcut for this firewall scenario: Assume the physical interface link being up proves the entire upstream routed path is healthy. It cannot establish the stated security outcome.

Question 165

A CCNP Security practice scenario presents this condition: A backup route never activates when an upstream service link loses reachability because the connected Ethernet interface remains up. Which misleading assumption MOST directly causes this issue and must be rejected? Select ONE best answer.

  1. Assume the physical interface link being up proves the entire upstream routed path is healthy.
  2. Assume the presence of two powered-on firewalls guarantees synchronized policies and seamless continuity for every session.
  3. Assume every ECMP path is permanently usable because route metrics match, even when a next hop stops responding.
  4. Assume every interface name automatically creates the correct security-zone mapping for all inherited access rules.

Explanation

Correct Answer

A:

Reject the scenario-specific unsafe assumption: Assume the physical interface link being up proves the entire upstream routed path is healthy. The stated shortcut conflicts with the intended control and its documented verification.

Incorrect Answers

B:

That option would assume the presence of two powered-on firewalls guarantees synchronized policies and seamless continuity for every session, but it addresses a different concern. Governing behavior: A connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

C:

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 connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

D:

That option would assume every interface name automatically creates the correct security-zone mapping for all inherited access rules, but it addresses a different concern. Governing behavior: A connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

Question 166

A firewall service owner escalates the following: An administrator replaces floating static routes with two equal-priority routes and expects destination health tracking without configuring any probe. Which security configuration or operational step BEST addresses the requirement? Select ONE best answer.

  1. Use supported static route tracking or SLA monitoring with a monitored destination and a defined fallback route when appropriate.
  2. Verify the chosen Threat Defense version and deployment mode support the proposed NAT and inspection features, then redesign and retest unsupported configurations.
  3. Validate a loop-free transparent insertion, appropriate switch port roles and bridge-group membership before enabling intended inspection policies.
  4. Assume the physical interface link being up proves the entire upstream routed path is healthy.

Explanation

Correct Answer

A:

Appropriate implementation: Use supported static route tracking or SLA monitoring with a monitored destination and a defined fallback route when appropriate.

Incorrect Answers

B:

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 connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

C:

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 connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

D:

Unsafe or unsupported shortcut for this firewall scenario: Assume the physical interface link being up proves the entire upstream routed path is healthy. It cannot establish the stated security outcome.

Question 167

An approved maintenance window surfaces this issue: An administrator replaces floating static routes with two equal-priority routes and expects destination health tracking without configuring any probe. Which firewall behavior or technical principle BEST explains the observed condition? Select ONE best answer.

  1. Transparent mode forwards between bridge-group member interfaces without becoming the conventional Layer 3 hop for bridged user traffic; a BVI can provide relevant routed management reachability.
  2. Assume the physical interface link being up proves the entire upstream routed path is healthy.
  3. HA peers use role and health information to determine failover, and monitoring scope influences whether a path failure triggers takeover.
  4. A connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

Explanation

Correct Answer

D:

Underlying platform principle: A connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

Incorrect Answers

A:

This alternative describes a different control, Transparent firewall bridge groups and BVI design, rather than this scenario’s Static route tracking with monitored target: Transparent mode forwards between bridge-group member interfaces without becoming the conventional Layer 3 hop for bridged user traffic; a BVI can provide relevant routed management reachability.

B:

Unsafe or unsupported shortcut for this firewall scenario: Assume the physical interface link being up proves the entire upstream routed path is healthy. Case details: An administrator replaces floating static routes with two equal-priority routes and expects destination health tracking without configuring any probe. Governing behavior: A connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

C:

This alternative describes a different control, HA active standby roles and failover triggers, rather than this scenario’s Static route tracking with monitored target: HA peers use role and health information to determine failover, and monitoring scope influences whether a path failure triggers takeover.

Question 168

A Secure Firewall deployment change request reports: An administrator replaces floating static routes with two equal-priority routes and expects destination health tracking without configuring any probe. Which specific evidence is MOST useful to confirm the real root cause? Select ONE best answer.

  1. Assume the physical interface link being up proves the entire upstream routed path is healthy.
  2. Inspect probe target, tracking status, route installation and actual forward path before and after a simulated upstream failure.
  3. Review logical packet path, appliance mode, interface fail-open or bypass support and controlled downtime tests.
  4. Inspect switch MAC movement, spanning-tree state, bridge-group interfaces and hop-by-hop packet captures under a controlled test.

Explanation

Correct Answer

B:

Direct independent verification: Inspect probe target, tracking status, route installation and actual forward path before and after a simulated upstream failure.

Incorrect Answers

A:

Unsafe or unsupported shortcut for this firewall scenario: Assume the physical interface link being up proves the entire upstream routed path is healthy. Case details: An administrator replaces floating static routes with two equal-priority routes and expects destination health tracking without configuring any probe. Governing behavior: A connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe. Approved action: Use supported static route tracking or SLA monitoring with a monitored destination and a defined fallback route when appropriate. Independent evidence: Inspect probe target, tracking status, route installation and actual forward path before and after a simulated upstream failure. Acceptance criterion: The preferred route withdraws on a qualifying monitored failure and returns predictably after recovery.

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 connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

D:

That option would inspect switch MAC movement, spanning-tree state, bridge-group interfaces and hop-by-hop packet captures under a controlled test, but it addresses a different concern. Governing behavior: A connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

Question 169

An FMC policy and traffic review discovers: An administrator replaces floating static routes with two equal-priority routes and expects destination health tracking without configuring any probe. Which observed result BEST confirms that the change meets the intended security requirement? Select ONE best answer.

  1. Permitted traffic traverses the firewall using planned routes and retains correct separation between routed security zones.
  2. Assume the physical interface link being up proves the entire upstream routed path is healthy.
  3. The preferred route withdraws on a qualifying monitored failure and returns predictably after recovery.
  4. The device returns to managed healthy service and user flows traverse the intended new topology without an unmanaged outage.

Explanation

Correct Answer

C:

Required acceptance evidence: The preferred route withdraws on a qualifying monitored failure and returns predictably after recovery.

Incorrect Answers

A:

This alternative describes a different control, Routed firewall interface addressing and routing, rather than this scenario’s Static route tracking with monitored target: Permitted traffic traverses the firewall using planned routes and retains correct separation between routed security zones.

B:

Unsafe or unsupported shortcut for this firewall scenario: Assume the physical interface link being up proves the entire upstream routed path is healthy.

D:

This alternative describes a different control, Change control when converting firewall deployment mode, rather than this scenario’s Static route tracking with monitored target: The device returns to managed healthy service and user flows traverse the intended new topology without an unmanaged outage. Case details: An administrator replaces floating static routes with two equal-priority routes and expects destination health tracking without configuring any probe. Governing behavior: A connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe. Approved action: Use supported static route tracking or SLA monitoring with a monitored destination and a defined fallback route when appropriate. Independent evidence: Inspect probe target, tracking status, route installation and actual forward path before and after a simulated upstream failure. Acceptance criterion: The preferred route withdraws on a qualifying monitored failure and returns predictably after recovery.

Question 170

An engineer validates a Cisco Secure Firewall implementation: An administrator replaces floating static routes with two equal-priority routes and expects destination health tracking without configuring any probe. Which TWO complementary choices provide the most appropriate corrective action and its direct independent verification? Select TWO answers.

  1. Inspect probe target, tracking status, route installation and actual forward path before and after a simulated upstream failure.
  2. Use supported static route tracking or SLA monitoring with a monitored destination and a defined fallback route when appropriate.
  3. Assume the physical interface link being up proves the entire upstream routed path is healthy.
  4. Review route table, equal-cost next hops, neighbor reachability and a set of traceable representative flows.
  5. Verify HA configuration and policy synchronization, supported connection state preservation and peer software compatibility before change.

Explanation

Correct Answers

A:

Direct independent How to verify: Inspect probe target, tracking status, route installation and actual forward path before and after a simulated upstream failure.

B:

Appropriate implementation: Use supported static route tracking or SLA monitoring with a monitored destination and a defined fallback route when appropriate. Case details: An administrator replaces floating static routes with two equal-priority routes and expects destination health tracking without configuring any probe. Governing behavior: A connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

Incorrect Answers

C:

Unsafe or unsupported shortcut for this firewall scenario: Assume the physical interface link being up proves the entire upstream routed path is healthy.

D:

That option would review route table, equal-cost next hops, neighbor reachability and a set of traceable representative flows, but it addresses a different concern. Governing behavior: A connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

E:

That option would verify HA configuration and policy synchronization, supported connection state preservation and peer software compatibility before change, but it addresses a different concern. Governing behavior: A connected interface may remain up even when its upstream next hop or destination is unavailable, so route tracking needs a meaningful probe.

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