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Question 570
A VSF stack split after a cable was accidentally unplugged between members. What physical action is warranted?
- Activate LACP negotiation where needed
- Reconnect valid VSF links
- Validate VSF member compatibility
- Distribute upstream uplinks across members
Explanation
Correct Answer
B:Restore the supported intermember link. Restore the supported intermember connectivity and verify stack membership.
Incorrect Answers
A:At least one LACP peer should initiate negotiation when a dynamic bundle is intended. But this does not address the case requirement to rejoin intended VSF members.
C:Check model, software and permitted link speeds before joining an additional member. But this does not address the case requirement to rejoin intended VSF members.
D:Place redundant links on independent physical stack members to reduce shared-failure exposure. But this does not address the case requirement to rejoin intended VSF members.
Question 571
A new VSF member refuses to join because its model is incompatible with existing stack hardware. What should be replaced or verified?
- Verify aggregate and stack state postchange
- Reconnect valid VSF links
- Validate VSF member compatibility
- Activate LACP negotiation where needed
Explanation
Correct Answer
C:Use the supported compatibility and software matrix. Check model, software and permitted link speeds before joining an additional member.
Incorrect Answers
A:Confirm collecting/distributing LACP flags and correct VSF roles before closing. But this does not address the case requirement to admit only eligible VSF devices.
B:Restore the supported intermember connectivity and verify stack membership. But this does not address the case requirement to admit only eligible VSF devices.
D:At least one LACP peer should initiate negotiation when a dynamic bundle is intended. But this does not address the case requirement to admit only eligible VSF devices.
Question 572
Every uplink is connected to stack member one, creating outages whenever it reloads. What improvement addresses the failure domain?
- Distribute upstream uplinks across members
- Activate LACP negotiation where needed
- Verify aggregate and stack state postchange
- Reconnect valid VSF links
Explanation
Correct Answer
A:Spread upstream links across different stack members. Place redundant links on independent physical stack members to reduce shared-failure exposure.
Incorrect Answers
B:At least one LACP peer should initiate negotiation when a dynamic bundle is intended. But this does not address the case requirement to retain core access during one member outage.
C:Confirm collecting/distributing LACP flags and correct VSF roles before closing. But this does not address the case requirement to retain core access during one member outage.
D:Restore the supported intermember connectivity and verify stack membership. But this does not address the case requirement to retain core access during one member outage.
Question 573
An engineer restores cables and immediately declares the LAG stable without inspecting actor/partner flags. What check is missing?
- Activate LACP negotiation where needed
- Verify aggregate and stack state postchange
- Distribute upstream uplinks across members
- Reconnect valid VSF links
Explanation
Correct Answer
B:Operational LACP and VSF states must show healthy membership. Confirm collecting/distributing LACP flags and correct VSF roles before closing.
Incorrect Answers
A:At least one LACP peer should initiate negotiation when a dynamic bundle is intended. But this does not address the case requirement to validate actual aggregation after repair.
C:Place redundant links on independent physical stack members to reduce shared-failure exposure. But this does not address the case requirement to validate actual aggregation after repair.
D:Restore the supported intermember connectivity and verify stack membership. But this does not address the case requirement to validate actual aggregation after repair.
Question 574
LACP is configured passive on both ends of a wired pair and no PDUs appear. What should be changed?
- Reconnect valid VSF links
- Align bundle member attributes
- Activate LACP negotiation where needed
- Validate VSF member compatibility
Explanation
Correct Answer
C:Enable active negotiation on at least one side. At least one LACP peer should initiate negotiation when a dynamic bundle is intended.
Incorrect Answers
A:Restore the supported intermember connectivity and verify stack membership. But this does not address the case requirement to make the dynamic aggregate negotiate.
B:Normalize native/allowed VLAN, speed and supported policies across member links. But this does not address the case requirement to make the dynamic aggregate negotiate.
D:Check model, software and permitted link speeds before joining an additional member. But this does not address the case requirement to make the dynamic aggregate negotiate.
Question 575
A VSF member has operational access ports but is absent from stack status after link failure. What should be restored?
- Reconnect valid VSF links
- Validate VSF member compatibility
- Activate LACP negotiation where needed
- Verify aggregate and stack state postchange
Explanation
Correct Answer
A:The internal VSF transport and membership path must be checked. Restore the supported intermember connectivity and verify stack membership.
Incorrect Answers
B:Check model, software and permitted link speeds before joining an additional member. But this does not address the case requirement to reconnect the intended logical stack.
C:At least one LACP peer should initiate negotiation when a dynamic bundle is intended. But this does not address the case requirement to reconnect the intended logical stack.
D:Confirm collecting/distributing LACP flags and correct VSF roles before closing. But this does not address the case requirement to reconnect the intended logical stack.
Question 576
The LAG is up but one port remains individual, not collecting. What evidence should be inspected?
- Verify aggregate and stack state postchange
- Align bundle member attributes
- Distribute upstream uplinks across members
- Validate VSF member compatibility
Explanation
Correct Answer
A:Member/partner state identifies the remaining negotiation issue. Confirm collecting/distributing LACP flags and correct VSF roles before closing.
Incorrect Answers
B:Normalize native/allowed VLAN, speed and supported policies across member links. But this does not address the case requirement to finish validation of all bundle members.
C:Place redundant links on independent physical stack members to reduce shared-failure exposure. But this does not address the case requirement to finish validation of all bundle members.
D:Check model, software and permitted link speeds before joining an additional member. But this does not address the case requirement to finish validation of all bundle members.
Question 577
Keepalive is reachable but the VSX ISL has failed and peer state is out of sync. What should be restored?
- Align VSX LAG and VLAN configuration
- Restore VSX inter-switch link
- Investigate simultaneous peer isolation
- Inspect VSX peer synchronization status
Explanation
Correct Answer
B:The ISL is essential to normal VSX synchronization. ISL recovery brings back normal peer synchronization and required state traffic.
Incorrect Answers
A:Multi-chassis LAG member and allowed VLAN settings should be consistent across participating peers. But this does not address the case requirement to repair the inter-switch link.
C:Loss of ISL and keepalive needs careful split-brain recovery following supported procedure. But this does not address the case requirement to repair the inter-switch link.
D:Operational state should show healthy ISL, peer roles, keepalive and config sync before closure. But this does not address the case requirement to repair the inter-switch link.
Question 578
A VSX pair has healthy ISL but keepalive packets cannot reach the remote source IP due to a route removal. What must be repaired?
- Inspect VSX peer synchronization status
- Repair independent keepalive path
- Investigate simultaneous peer isolation
- Validate compatible peer releases
Explanation
Correct Answer
B:Restore the independent keepalive routed path. Keepalive must have routed reachability separate from the ISL failure domain.
Incorrect Answers
A:Operational state should show healthy ISL, peer roles, keepalive and config sync before closure. But this does not address the case requirement to recover peer-liveness monitoring.
C:Loss of ISL and keepalive needs careful split-brain recovery following supported procedure. But this does not address the case requirement to recover peer-liveness monitoring.
D:Supported VSX software versions and features must be checked after a staged upgrade. But this does not address the case requirement to recover peer-liveness monitoring.
Question 579
Both keepalive and ISL fail and both switches could believe the peer is gone. How should recovery be handled?
- Repair independent keepalive path
- Validate compatible peer releases
- Align VSX LAG and VLAN configuration
- Investigate simultaneous peer isolation
Explanation
Correct Answer
D:Use documented VSX split-recovery procedures to avoid unsafe forwarding. Loss of ISL and keepalive needs careful split-brain recovery following supported procedure.
Incorrect Answers
A:Keepalive must have routed reachability separate from the ISL failure domain. But this does not address the case requirement to handle a possible split-brain condition.
B:Supported VSX software versions and features must be checked after a staged upgrade. But this does not address the case requirement to handle a possible split-brain condition.
C:Multi-chassis LAG member and allowed VLAN settings should be consistent across participating peers. But this does not address the case requirement to handle a possible split-brain condition.
Question 580
A downstream VSX LAG has one peer missing VLAN 120 after a manual edit. What configuration must be aligned?
- Align VSX LAG and VLAN configuration
- Inspect VSX peer synchronization status
- Validate compatible peer releases
- Restore VSX inter-switch link
Explanation
Correct Answer
A:Ensure matching effective LAG and VLAN policy. Multi-chassis LAG member and allowed VLAN settings should be consistent across participating peers.
Incorrect Answers
B:Operational state should show healthy ISL, peer roles, keepalive and config sync before closure. But this does not address the case requirement to restore multi-chassis bundle consistency.
C:Supported VSX software versions and features must be checked after a staged upgrade. But this does not address the case requirement to restore multi-chassis bundle consistency.
D:ISL recovery brings back normal peer synchronization and required state traffic. But this does not address the case requirement to restore multi-chassis bundle consistency.
HPE Network Switching Professional (HPE7-A08) Practice Tests