100% Latest & Updated HP HPE7-A01 Practice Test Questions, Exam Dumps & Verified Answers!
30 Days Free Updates, Instant Download!
Question 190
A campus access switch connects to a distribution switch via two cables but the LAG remains down. What should the team inspect to confirm the result?
- Check receiver joins, multicast routing state and per-VLAN forwarding
- Connect an authorized phone and PC, then a third test device, and observe violation behavior
- Measure broadcast utilization and user performance before and after moving a pilot subnet
- Review partner system IDs, LACP member status and interface error counters
Explanation
Correct Answer
D:Protocol state distinguishes incompatible bundling from a physical fault. Negotiation and common aggregation parameters are needed for a functional LAG.
Incorrect Answers
A:Membership alone does not prove end-to-end multicast delivery. It would not resolve the documented symptom; protocol state distinguishes incompatible bundling from a physical fault.
B:Both acceptance and rejection establish the effective limit. In this situation, protocol state distinguishes incompatible bundling from a physical fault.
C:Improved L2 containment should produce measurable results. By contrast, protocol state distinguishes incompatible bundling from a physical fault.
Question 191
A campus access switch connects to a distribution switch via two cables but the LAG remains down. Which misconception is most likely to obstruct a correct fix?
- Assume matching spanning-tree priority alone proves identical MST regions
- Assume enabling IGMP snooping on access switches creates multicast routes between subnets
- Set both bundle endpoints to LACP passive and expect negotiation to start
- Assume adding more IP routes will fix a MAC learning failure in the same VLAN
Explanation
Correct Answer
C:Neither side initiates protocol exchange when both are passive. Negotiation and common aggregation parameters are needed for a functional LAG.
Incorrect Answers
A:Name, revision and VLAN mapping also affect region identity. It would not resolve the documented symptom; neither side initiates protocol exchange when both are passive.
B:Snooping does not replace routed multicast configuration. By contrast, neither side initiates protocol exchange when both are passive.
D:Layer 3 route changes cannot correct a basic Layer 2 forwarding table problem. The relevant technical distinction is that neither side initiates protocol exchange when both are passive.
Question 192
A campus access switch connects to a distribution switch via two cables but the LAG remains down. What precaution is most important before the change is expanded?
- Validate identical speed and native VLAN assumptions before putting the bundle into service
- Run a representative endpoint connectivity test and preserve rollback of the port profile
- Document IPv6 control-plane trust ports and test dual-stack clients
- Limit multicast to intended receivers and test one source leaving the network
Explanation
Correct Answer
A:A LAG with mismatched port behavior can disrupt multiple VLANs. Protocol state distinguishes incompatible bundling from a physical fault.
Incorrect Answers
B:One device can expose a mapping error before a whole row of ports moves. Here, however, a LAG with mismatched port behavior can disrupt multiple VLANs.
C:Protecting only IPv4 leaves a separate attack path. By contrast, a LAG with mismatched port behavior can disrupt multiple VLANs.
D:Uncontrolled multicast can consume shared uplink capacity. The relevant technical distinction is that a LAG with mismatched port behavior can disrupt multiple VLANs.
Question 193
A broadcast domain fills with unknown-unicast flooding following a switch replacement. Which configuration decision most directly resolves the situation?
- Investigate MAC address learning, VLAN path and any topology changes
- Correct the LLDP management address advertisement and intended management context
- Inspect trunk allowed-VLAN lists and native/tagged state at both switches
- Check creation of the VLAN and its permitted status on each relevant trunk
Explanation
Correct Answer
A:Unknown-unicast traffic is flooded when the switch has not learned the destination location. Learned port entries reveal whether forwarding state is stable.
Incorrect Answers
B:Neighbor inventory should reflect reachable approved management endpoints. In this situation, unknown-unicast traffic is flooded when the switch has not learned the destination location.
C:Missing one VLAN on an otherwise healthy trunk isolates the problem to membership. The relevant technical distinction is that unknown-unicast traffic is flooded when the switch has not learned the destination location.
D:An allowed tag that does not exist or propagate cannot forward frames. Here, however, unknown-unicast traffic is flooded when the switch has not learned the destination location.
Question 194
A broadcast domain fills with unknown-unicast flooding following a switch replacement. Which check most directly demonstrates the desired network behavior?
- Compare MAC tables before and after sending test traffic between known endpoints
- Inspect active members, hashed session paths and tagged-frame counters under load
- Capture approved and unauthorized RA messages and inspect edge policy counters
- Capture gateway ARP replies and verify intended active/standby or active-gateway behavior
Explanation
Correct Answer
A:Learned port entries reveal whether forwarding state is stable. Unknown-unicast traffic is flooded when the switch has not learned the destination location.
Incorrect Answers
B:Per-member evidence helps isolate a bad link or mismatch. Here, however, learned port entries reveal whether forwarding state is stable.
C:The guard must block the rogue source while allowing real gateway advertisements. It would not resolve the documented symptom; learned port entries reveal whether forwarding state is stable.
D:The MAC and virtual-address state explain competing replies. In this situation, learned port entries reveal whether forwarding state is stable.
Question 195
A broadcast domain fills with unknown-unicast flooding following a switch replacement. Which assumption would be most misleading when investigating this situation?
- Assume adding more IP routes will fix a MAC learning failure in the same VLAN
- Rewrite the dynamic routing configuration before checking the link medium
- Assign the same gateway IP independently to unrelated routers without an HA protocol
- Mark every user edge port trusted to prevent DHCP failures
Explanation
Correct Answer
A:Layer 3 route changes cannot correct a basic Layer 2 forwarding table problem. Unknown-unicast traffic is flooded when the switch has not learned the destination location.
Incorrect Answers
B:Routing cannot repair corrupted Ethernet frames. By contrast, layer 3 route changes cannot correct a basic Layer 2 forwarding table problem.
C:Duplicate addressing can cause intermittent reachability. It would not resolve the documented symptom; layer 3 route changes cannot correct a basic Layer 2 forwarding table problem.
D:Trusting user ports defeats the rogue-server protection. In this situation, layer 3 route changes cannot correct a basic Layer 2 forwarding table problem.
Question 196
A broadcast domain fills with unknown-unicast flooding following a switch replacement. Which safeguard best reduces the deployment risk in this case?
- Document IPv6 control-plane trust ports and test dual-stack clients
- Check STP and trunk changes before expanding VLAN membership
- Limit multicast to intended receivers and test one source leaving the network
- Run a representative endpoint connectivity test and preserve rollback of the port profile
Explanation
Correct Answer
B:An upstream loop or tagging error can worsen MAC churn. Learned port entries reveal whether forwarding state is stable.
Incorrect Answers
A:Protecting only IPv4 leaves a separate attack path. It would not resolve the documented symptom; an upstream loop or tagging error can worsen MAC churn.
C:Uncontrolled multicast can consume shared uplink capacity. By contrast, an upstream loop or tagging error can worsen MAC churn.
D:One device can expose a mapping error before a whole row of ports moves. The relevant technical distinction is that an upstream loop or tagging error can worsen MAC churn.
Question 197
An access closet needs multiple tagged user VLANs but only one untagged management VLAN. What is the most appropriate first technical change?
- Configure the trunk native VLAN and allowed tagged VLAN list consistently at both ends
- Correct the LLDP management address advertisement and intended management context
- Plan the supported IGMP snooping and routed multicast control design
- Enable DHCP snooping with trusted uplinks and untrusted user access ports
Explanation
Correct Answer
A:Proper tagging preserves the intended separation across the uplink. Both tagged and untagged frames must reach their intended segment.
Incorrect Answers
B:Neighbor inventory should reflect reachable approved management endpoints. By contrast, proper tagging preserves the intended separation across the uplink.
C:Layer 2 listener awareness and Layer 3 multicast forwarding are different functions. The relevant technical distinction is that proper tagging preserves the intended separation across the uplink.
D:Snooping can reject unauthorized server offers on client-facing interfaces. Here, however, proper tagging preserves the intended separation across the uplink.
Question 198
An access closet needs multiple tagged user VLANs but only one untagged management VLAN. Which observation would best verify that the intended behavior is working?
- Inspect switch trunk state and endpoint VLAN membership on each side
- Verify LLDP neighbors and configured roles on sample physical ports after deployment
- Capture gateway ARP replies and verify intended active/standby or active-gateway behavior
- Compare MAC tables before and after sending test traffic between known endpoints
Explanation
Correct Answer
A:Both tagged and untagged frames must reach their intended segment. Proper tagging preserves the intended separation across the uplink.
Incorrect Answers
B:Live adjacency checks catch wrong interface mappings. In this situation, both tagged and untagged frames must reach their intended segment.
C:The MAC and virtual-address state explain competing replies. The relevant technical distinction is that both tagged and untagged frames must reach their intended segment.
D:Learned port entries reveal whether forwarding state is stable. Here, however, both tagged and untagged frames must reach their intended segment.
Question 199
An access closet needs multiple tagged user VLANs but only one untagged management VLAN. Which belief about the configuration should the team reject?
- Disable spanning tree globally so both cables forward at once
- Assume two independent switches can always masquerade as one ordinary LAG peer
- Configure the same native VLAN differently at each end and ignore mismatch alarms
- Assume the old VLAN MAC table is instantly updated without any new traffic
Explanation
Correct Answer
C:Untagged traffic can enter a different VLAN after crossing the link. Proper tagging preserves the intended separation across the uplink.
Incorrect Answers
A:Removing loop prevention can amplify broadcast storms. Here, however, untagged traffic can enter a different VLAN after crossing the link.
B:Without a supported MC-LAG design the partner identities may conflict. It would not resolve the documented symptom; untagged traffic can enter a different VLAN after crossing the link.
D:Entries may persist until relearn or expiry. In this situation, untagged traffic can enter a different VLAN after crossing the link.
Question 200
An access closet needs multiple tagged user VLANs but only one untagged management VLAN. Which THREE steps together deliver the change, verify its effect, and reduce rollout risk? Choose THREE.
- Configure the trunk native VLAN and allowed tagged VLAN list consistently at both ends
- Investigate a Layer 2 loop and restore a supported spanning-tree or LAG design
- Assess narrowing L2 domains or routing at distribution boundaries
- Document native VLAN policy and test management reachability after change
- Validate identical speed and native VLAN assumptions before putting the bundle into service
- Inspect switch trunk state and endpoint VLAN membership on each side
Explanation
Correct Answers
A:Proper tagging preserves the intended separation across the uplink. Both tagged and untagged frames must reach their intended segment.
D:Incorrect native tagging can remove remote switch access. Both tagged and untagged frames must reach their intended segment.
F:Both tagged and untagged frames must reach their intended segment. Proper tagging preserves the intended separation across the uplink.
Incorrect Answers
B:MAC movement can signal circulating frames across parallel physical links. By contrast, proper tagging preserves the intended separation across the uplink.
C:Smaller broadcast scopes reduce unnecessary flooding across the campus. In this situation, proper tagging preserves the intended separation across the uplink.
E:A LAG with mismatched port behavior can disrupt multiple VLANs. It would not resolve the documented symptom; incorrect native tagging can remove remote switch access.
HPE Network Campus Access Professional (HPE7-A01) Practice Tests