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Question 130
A campus distribution pair should survive one uplink without Layer 2 loops during recovery. What should the team inspect to confirm the result?
- Compare effective configuration and member software before and after an election
- Confirm member ID, software and expected port profiles after it rejoins
- Test a planned building-level power failure and verify alternate gateway and path availability
- Inspect active bundle members and blocked/forwarding STP states while changing links
Explanation
Correct Answer
D:These states reveal whether the physical backup is correctly controlled. Redundancy needs deterministic forwarding and loop prevention.
Incorrect Answers
A:A new conductor should not silently lose edge security settings. It would not resolve the documented symptom; these states reveal whether the physical backup is correctly controlled.
B:Hardware presence alone does not confirm the logical port numbering. In this situation, these states reveal whether the physical backup is correctly controlled.
C:Device-level failover cannot prove building-level recovery. By contrast, these states reveal whether the physical backup is correctly controlled.
Question 131
A campus distribution pair should survive one uplink without Layer 2 loops during recovery. Which misconception is most likely to obstruct a correct fix?
- Disable all peer-liveness checks merely to clear an operational alarm
- Assume two access VLANs alone provide separate routing tables within one default VRF
- Connect both uplinks as independent forwarding trunks without loop protection
- Assign two unrelated virtual MACs to what is supposed to be one VSX active gateway
Explanation
Correct Answer
C:Parallel bridges can create a broadcast loop. Redundancy needs deterministic forwarding and loop prevention.
Incorrect Answers
A:Suppressing detection can increase split-brain risk. The relevant technical distinction is that parallel bridges can create a broadcast loop.
B:VLAN segmentation need not separate L3 forwarding contexts. It would not resolve the documented symptom; parallel bridges can create a broadcast loop.
D:Inconsistent gateway identity may cause client neighbor changes and outages. By contrast, parallel bridges can create a broadcast loop.
Question 132
A campus distribution pair should survive one uplink without Layer 2 loops during recovery. What precaution is most important before the change is expanded?
- Test failover with observed MAC relearning and application reachability
- Keep a labeled spare and verified configuration backup before swapping hardware
- Spread critical APs across members or provide alternate coverage where feasible
- Stage new members with matched firmware and a backup of the stack configuration
Explanation
Correct Answer
A:Recovery should occur without flooding storms or long service disruption. These states reveal whether the physical backup is correctly controlled.
Incorrect Answers
B:A documented spare path shortens user downtime. By contrast, recovery should occur without flooding storms or long service disruption.
C:Power-domain diversity limits a single member's impact. The relevant technical distinction is that recovery should occur without flooding storms or long service disruption.
D:Controlled joining lowers the risk of disrupting existing ports. Here, however, recovery should occur without flooding storms or long service disruption.
Question 133
A VSF stack changes the elected conductor after a power event and access policies drift. Which configuration decision most directly resolves the situation?
- Review the shared active-gateway virtual IP/MAC and SVI configuration on both peers
- Review stack election priorities, software compatibility and synchronized configuration
- Follow the supported member replacement and stack-identity restoration steps
- Verify the LAG or STP configuration that controls uplink redundancy
Explanation
Correct Answer
B:Stable leadership and matching software reduce inconsistent stack state. A new conductor should not silently lose edge security settings.
Incorrect Answers
A:Consistent gateway parameters let either peer forward for the subnet. Here, however, stable leadership and matching software reduce inconsistent stack state.
C:A correctly provisioned replacement rejoins without overwriting the surviving stack. The relevant technical distinction is that stable leadership and matching software reduce inconsistent stack state.
D:The forwarding state may be deliberate under loop-prevention rules. In this situation, stable leadership and matching software reduce inconsistent stack state.
Question 134
A VSF stack changes the elected conductor after a power event and access policies drift. Which check most directly demonstrates the desired network behavior?
- Check ARP/neighbor resolution and client gateway traffic on each peer separately
- Check each VRF route table and allowed cross-VRF flow in a live test
- Compare effective configuration and member software before and after an election
- Inspect active bundle members and blocked/forwarding STP states while changing links
Explanation
Correct Answer
C:A new conductor should not silently lose edge security settings. Stable leadership and matching software reduce inconsistent stack state.
Incorrect Answers
A:A reachable VIP on one node does not prove resilient first-hop operation. In this situation, a new conductor should not silently lose edge security settings.
B:Distinct route entries prove isolation beyond VLAN tagging. It would not resolve the documented symptom; a new conductor should not silently lose edge security settings.
D:These states reveal whether the physical backup is correctly controlled. Here, however, a new conductor should not silently lose edge security settings.
Question 135
A VSF stack changes the elected conductor after a power event and access policies drift. Which assumption would be most misleading when investigating this situation?
- Assume a healthy keepalive link replaces the data synchronization functions of the ISL
- Assume all newly inserted stack members inherit every configuration before joining completes
- Assume virtualized routing contexts provide independent physical backplanes
- Assume VSX high availability guarantees zero application loss under every upgrade condition
Explanation
Correct Answer
B:A joining device can be incompatible or in recovery state. Stable leadership and matching software reduce inconsistent stack state.
Incorrect Answers
A:Keepalive and ISL serve different purposes. In this situation, a joining device can be incompatible or in recovery state.
C:Logical separation does not duplicate hardware capacity. By contrast, a joining device can be incompatible or in recovery state.
D:Network services can depend on external routing and client behavior. It would not resolve the documented symptom; a joining device can be incompatible or in recovery state.
Question 136
A VSF stack changes the elected conductor after a power event and access policies drift. Which safeguard best reduces the deployment risk in this case?
- Capacity-test the combined peak workload and define failure-mode limits
- Replace an unsupported optic in a maintenance window and verify a safe recovery sequence
- Stage new members with matched firmware and a backup of the stack configuration
- Validate the topology against the supported platform guide before modifying failover roles
Explanation
Correct Answer
C:Controlled joining lowers the risk of disrupting existing ports. A new conductor should not silently lose edge security settings.
Incorrect Answers
A:Shared resilience must be sized for the largest expected simultaneous demand. The relevant technical distinction is that controlled joining lowers the risk of disrupting existing ports.
B:A partially degraded peer pair can behave unpredictably under another failure. It would not resolve the documented symptom; controlled joining lowers the risk of disrupting existing ports.
D:Ad hoc changes to both peers can worsen an existing loop. By contrast, controlled joining lowers the risk of disrupting existing ports.
Question 137
A regional backbone uses two VSX switches but operators accidentally configure different VLANs on the peers. What is the most appropriate first technical change?
- Review the shared active-gateway virtual IP/MAC and SVI configuration on both peers
- Verify the LAG or STP configuration that controls uplink redundancy
- Design separate power domains and redundant routed campus links rather than relying only on one chassis
- Enable appropriate configuration synchronization or maintain reviewed matching objects
Explanation
Correct Answer
D:Both peers must support the same intended multi-chassis forwarding services. Divergent peer settings may appear only on one hashed path.
Incorrect Answers
A:Consistent gateway parameters let either peer forward for the subnet. The relevant technical distinction is that both peers must support the same intended multi-chassis forwarding services.
B:The forwarding state may be deliberate under loop-prevention rules. By contrast, both peers must support the same intended multi-chassis forwarding services.
C:Geographic power isolation must accompany logical path redundancy. Here, however, both peers must support the same intended multi-chassis forwarding services.
Question 138
A regional backbone uses two VSX switches but operators accidentally configure different VLANs on the peers. Which observation would best verify that the intended behavior is working?
- Compare VLAN, LAG and active-gateway parameters on each peer and test flows
- Inspect stack membership, conductor role and port availability during member removal
- Check AP uplink placement and power draw before and after member loss
- Confirm member ID, software and expected port profiles after it rejoins
Explanation
Correct Answer
A:Divergent peer settings may appear only on one hashed path. Both peers must support the same intended multi-chassis forwarding services.
Incorrect Answers
B:A healthy stack must maintain the intended surviving interfaces. In this situation, divergent peer settings may appear only on one hashed path.
C:Resilient switching requires enough live physical interfaces. The relevant technical distinction is that divergent peer settings may appear only on one hashed path.
D:Hardware presence alone does not confirm the logical port numbering. Here, however, divergent peer settings may appear only on one hashed path.
Question 139
A regional backbone uses two VSX switches but operators accidentally configure different VLANs on the peers. Which belief about the configuration should the team reject?
- Insert an unprepared device with duplicate member identity and assume ports map correctly
- Assume a shared virtual IP alone determines correct routing on each VSX node
- Assume a common VSF control plane supplies power to ports on a failed unit
- Assume all VSX configuration is automatically synchronized without enabling supported sync settings
Explanation
Correct Answer
D:Only configured sync categories are replicated. Both peers must support the same intended multi-chassis forwarding services.
Incorrect Answers
A:Identity conflict can attach users to unintended configuration. It would not resolve the documented symptom; only configured sync categories are replicated.
B:Each peer still needs valid routed interfaces and protocol state. In this situation, only configured sync categories are replicated.
C:Stacking virtualizes management, not the failed hardware's electrical outputs. Here, however, only configured sync categories are replicated.
Question 140
A regional backbone uses two VSX switches but operators accidentally configure different VLANs on the peers. What should be included in the rollout plan to limit a foreseeable failure?
- Spread critical APs across members or provide alternate coverage where feasible
- Use side-by-side peer diffs before deploying a new shared VLAN
- Keep a labeled spare and verified configuration backup before swapping hardware
- Validate the topology against the supported platform guide before modifying failover roles
Explanation
Correct Answer
B:Preflight checks prevent asymmetric blackholes in the pair. Divergent peer settings may appear only on one hashed path.
Incorrect Answers
A:Power-domain diversity limits a single member's impact. By contrast, preflight checks prevent asymmetric blackholes in the pair.
C:A documented spare path shortens user downtime. It would not resolve the documented symptom; preflight checks prevent asymmetric blackholes in the pair.
D:Ad hoc changes to both peers can worsen an existing loop. In this situation, preflight checks prevent asymmetric blackholes in the pair.
HPE Network Campus Access Professional (HPE7-A01) Practice Tests