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HP HPE7-A08 Practice Test 9

Question 80

Two distribution switches announce separate physical gateway addresses and clients lose access when one is removed. Which switching implementation or corrective action BEST addresses the underlying requirement?

  1. Use separate VRFs for management, corporate, and guest routing where specified, with explicit approved inter-VRF connectivity.
  2. Provide a supported resilient default gateway design and test active-forwarding behavior under peer failure.
  3. Apply group-level switching policies only after confirming device model compatibility and whether the site is UI-group or template-group managed.
  4. Differentiate RADIUS latency and repeated endpoint authentication churn from application packet loss or physical interface faults.

Explanation

Correct Answer

B:

Provide a supported resilient default gateway design and test active-forwarding behavior under peer failure. This addresses the controlling network requirement rather than merely changing its symptoms. A shared-looking gateway IP does not prove failover is configured or that the chosen platform supports the intended mechanism. Verify before and after with: Inspect VRRP role/priority or VSX active gateway configuration, virtual MAC/IP, peer state and ARP entries. Scenario: Two distribution switches announce separate physical gateway addresses and clients lose access when one is removed.

Incorrect Answers

A:

Use separate VRFs for management, corporate, and guest routing where specified, with explicit approved inter-VRF connectivity. This action instead applies to VRF isolation and controlled route leaking. VRFs separate routing tables, but they do not replace security policy on deliberately interconnected services. It does not directly resolve the controlling requirement. The targeted response is: Provide a supported resilient default gateway design and test active-forwarding behavior under peer failure. Scenario: Two distribution switches announce separate physical gateway addresses and clients lose access when one is removed.

C:

Apply group-level switching policies only after confirming device model compatibility and whether the site is UI-group or template-group managed. This action instead applies to Central UI group versus template configuration scope. Template and UI group management workflows are not interchangeable, especially for device-specific variable substitution. It does not directly resolve the controlling requirement. The targeted response is: Provide a supported resilient default gateway design and test active-forwarding behavior under peer failure. Scenario: Two distribution switches announce separate physical gateway addresses and clients lose access when one is removed.

D:

Differentiate RADIUS latency and repeated endpoint authentication churn from application packet loss or physical interface faults. This action instead applies to Authentication storms and endpoint retry load. Authentication storms can degrade perceived access and control-plane performance despite normal link LEDs. It does not directly resolve the controlling requirement. The targeted response is: Provide a supported resilient default gateway design and test active-forwarding behavior under peer failure. Scenario: Two distribution switches announce separate physical gateway addresses and clients lose access when one is removed.

Question 81

An automation run applies the new access policy to production before any test of legacy IoT ports. Which evidence should the network engineer inspect FIRST to isolate the problem or verify the prerequisite?

  1. Compare serials, firmware, management tenant, location, replacement spares, support expiration and asset owner.
  2. Inspect local/remote port IDs, system descriptions, LLDP freshness, link MACs and expected cable map.
  3. Examine client Discover/Offer exchanges, snooping trusted ports, VLAN interface, relay server reachability and binding table.
  4. Check template parameter coverage, model firmware, intended diffs, test switch result, scope and staged deployment audit.

Explanation

Correct Answer

D:

Check template parameter coverage, model firmware, intended diffs, test switch result, scope and staged deployment audit. These observations distinguish the stated fault or prerequisite from an unrelated feature. Templating improves consistency but unscoped variables can replicate errors across entire fleets. The corresponding action is: Validate AOS-CX configuration templates against supported platform variants and preproduction devices before broad rollout. Scenario: An automation run applies the new access policy to production before any test of legacy IoT ports.

Incorrect Answers

A:

Compare serials, firmware, management tenant, location, replacement spares, support expiration and asset owner. These checks can help with Inventory and licensing lifecycle control, but they are not the most discriminating first evidence here. Examine: Check template parameter coverage, model firmware, intended diffs, test switch result, scope and staged deployment audit. Scenario: An automation run applies the new access policy to production before any test of legacy IoT ports.

B:

Inspect local/remote port IDs, system descriptions, LLDP freshness, link MACs and expected cable map. These checks can help with LLDP topology and neighbor mapping, but they are not the most discriminating first evidence here. Examine: Check template parameter coverage, model firmware, intended diffs, test switch result, scope and staged deployment audit. Scenario: An automation run applies the new access policy to production before any test of legacy IoT ports.

C:

Examine client Discover/Offer exchanges, snooping trusted ports, VLAN interface, relay server reachability and binding table. These checks can help with DHCP snooping and client boot failure identification, but they are not the most discriminating first evidence here. Examine: Check template parameter coverage, model firmware, intended diffs, test switch result, scope and staged deployment audit. Scenario: An automation run applies the new access policy to production before any test of legacy IoT ports.

Question 82

An engineer assumes the same firmware build is installed across a stack and ignores different API response capabilities. Which TWO complementary steps identify the appropriate network response AND the evidence needed to verify it? Select TWO.

  1. Review monitoring credentials, SNMPv3 settings, streaming telemetry support, collector identity, interval and privacy requirements.
  2. Build controlled REST configuration changes with preflight GET/diff, approved PUT/PATCH semantics, error handling and postwrite state checks.
  3. Inspect switch firmware, GET /rest reported versions, authorization, resource URI and response shape.
  4. Forward and reverse flows follow supported policy and the perceived bottleneck is linked to measurable path imbalance.
  5. Discover supported REST versions for each switch and use compatible endpoints rather than hardcoding an obsolete API path.

Explanation

Correct Answers

C:

Inspect switch firmware, GET /rest reported versions, authorization, resource URI and response shape. These observations distinguish the stated fault or prerequisite from an unrelated feature. REST API resource and version compatibility vary by firmware; a valid old URI may be deprecated or unavailable. The corresponding action is: Discover supported REST versions for each switch and use compatible endpoints rather than hardcoding an obsolete API path. This choice supplies the diagnostic or verification half of the pair. Scenario: An engineer assumes the same firmware build is installed across a stack and ignores different API response capabilities.

E:

Discover supported REST versions for each switch and use compatible endpoints rather than hardcoding an obsolete API path. This addresses the controlling network requirement rather than merely changing its symptoms. REST API resource and version compatibility vary by firmware; a valid old URI may be deprecated or unavailable. Verify before and after with: Inspect switch firmware, GET /rest reported versions, authorization, resource URI and response shape. This choice supplies the implementation half of the requested pair. Scenario: An engineer assumes the same firmware build is installed across a stack and ignores different API response capabilities.

Incorrect Answers

A:

Review monitoring credentials, SNMPv3 settings, streaming telemetry support, collector identity, interval and privacy requirements. This step pertains to SNMP and streaming telemetry collection governance but is not one of the two complementary decisions in this case. The required response and evidence are: Discover supported REST versions for each switch and use compatible endpoints rather than hardcoding an obsolete API path. Together with: Inspect switch firmware, GET /rest reported versions, authorization, resource URI and response shape. Scenario: An engineer assumes the same firmware build is installed across a stack and ignores different API response capabilities.

B:

Build controlled REST configuration changes with preflight GET/diff, approved PUT/PATCH semantics, error handling and postwrite state checks. This step pertains to Idempotent REST updates and config difference verification but is not one of the two complementary decisions in this case. The required response and evidence are: Discover supported REST versions for each switch and use compatible endpoints rather than hardcoding an obsolete API path. Together with: Inspect switch firmware, GET /rest reported versions, authorization, resource URI and response shape. Scenario: An engineer assumes the same firmware build is installed across a stack and ignores different API response capabilities.

D:

Forward and reverse flows follow supported policy and the perceived bottleneck is linked to measurable path imbalance. This step pertains to Asymmetric path and ECMP hash performance analysis but is not one of the two complementary decisions in this case. The required response and evidence are: Discover supported REST versions for each switch and use compatible endpoints rather than hardcoding an obsolete API path. Together with: Inspect switch firmware, GET /rest reported versions, authorization, resource URI and response shape. Scenario: An engineer assumes the same firmware build is installed across a stack and ignores different API response capabilities.

Question 83

A technician confuses broadcast storm control with IGMP receiver discovery and filters a legitimate training stream. Which result BEST proves the intended network change or management control works as required?

  1. BGP peers establish and exchange only approved prefixes with reachable next hops and no unwanted leakage.
  2. Receivers on remote VLANs join approved streams through valid routed multicast trees without unicast routing regressions.
  3. The chosen switch provides the required physical connectivity and resilient uplinks at documented load and without an unsupported feature assumption.
  4. Only subscribed receiver ports obtain the required multicast flows without broad flooding or unexpected drops.

Explanation

Correct Answer

D:

Only subscribed receiver ports obtain the required multicast flows without broad flooding or unexpected drops. This is an observable forwarding, management, or policy outcome, not simply a declaration that a command completed. IGMP snooping relies on correct membership signaling and appropriate querier behavior; static VLAN existence is insufficient. Scenario: A technician confuses broadcast storm control with IGMP receiver discovery and filters a legitimate training stream.

Incorrect Answers

A:

BGP peers establish and exchange only approved prefixes with reachable next hops and no unwanted leakage. This result is associated with BGP peer establishment and route policy validation; it does not demonstrate the requested network behavior. The relevant acceptance test is: Only subscribed receiver ports obtain the required multicast flows without broad flooding or unexpected drops. Scenario: A technician confuses broadcast storm control with IGMP receiver discovery and filters a legitimate training stream.

B:

Receivers on remote VLANs join approved streams through valid routed multicast trees without unicast routing regressions. This result is associated with PIM and multicast routed-path validation; it does not demonstrate the requested network behavior. The relevant acceptance test is: Only subscribed receiver ports obtain the required multicast flows without broad flooding or unexpected drops. Scenario: A technician confuses broadcast storm control with IGMP receiver discovery and filters a legitimate training stream.

C:

The chosen switch provides the required physical connectivity and resilient uplinks at documented load and without an unsupported feature assumption. This result is associated with Campus access versus aggregation switch portfolio fit; it does not demonstrate the requested network behavior. The relevant acceptance test is: Only subscribed receiver ports obtain the required multicast flows without broad flooding or unexpected drops. Scenario: A technician confuses broadcast storm control with IGMP receiver discovery and filters a legitimate training stream.

Question 84

A contractor creates a patch-cord loop and packet flooding rises despite a topology documented as loop-free. Which switching implementation or corrective action BEST addresses the underlying requirement?

  1. Configure the appropriate spanning tree mode and root placement for the Layer 2 topology, then verify alternate-port behavior.
  2. Differentiate a legitimate redundant STP blocked port from a physical link failure or topology loop using bridge-state evidence.
  3. Implement a supported VSF topology with consistent member identities, stack links and role expectations, and validate member failover.
  4. Create LAG groups with matching LACP negotiation, physical rates, VLAN configuration and supported hash behavior.

Explanation

Correct Answer

A:

Configure the appropriate spanning tree mode and root placement for the Layer 2 topology, then verify alternate-port behavior. This addresses the controlling network requirement rather than merely changing its symptoms. Spanning tree protects a looped L2 domain but root election and region consistency still require deliberate design. Verify before and after with: Inspect root bridge ID, port roles, path cost, MST region consistency and topology change counters. Scenario: A contractor creates a patch-cord loop and packet flooding rises despite a topology documented as loop-free.

Incorrect Answers

B:

Differentiate a legitimate redundant STP blocked port from a physical link failure or topology loop using bridge-state evidence. This action instead applies to STP blocking and topology-loop recognition. STP discards some redundant paths by design; unexpected topology changes and MAC moves suggest a separate fault. It does not directly resolve the controlling requirement. The targeted response is: Configure the appropriate spanning tree mode and root placement for the Layer 2 topology, then verify alternate-port behavior. Scenario: A contractor creates a patch-cord loop and packet flooding rises despite a topology documented as loop-free.

C:

Implement a supported VSF topology with consistent member identities, stack links and role expectations, and validate member failover. This action instead applies to VSF stack topology and member replacement. VSF unifies supported switch members in one logical stack; member identity and stack-link design remain essential. It does not directly resolve the controlling requirement. The targeted response is: Configure the appropriate spanning tree mode and root placement for the Layer 2 topology, then verify alternate-port behavior. Scenario: A contractor creates a patch-cord loop and packet flooding rises despite a topology documented as loop-free.

D:

Create LAG groups with matching LACP negotiation, physical rates, VLAN configuration and supported hash behavior. This action instead applies to LACP link aggregation member consistency. LACP forms an aggregate only when the peer and member attributes are compatible; wiring two cables is not proof of bundling. It does not directly resolve the controlling requirement. The targeted response is: Configure the appropriate spanning tree mode and root placement for the Layer 2 topology, then verify alternate-port behavior. Scenario: A contractor creates a patch-cord loop and packet flooding rises despite a topology documented as loop-free.

Question 85

A team proposes clearing every routing process to fix a single rejected OSPF neighbor. Which evidence should the network engineer inspect FIRST to isolate the problem or verify the prerequisite?

  1. Review model firmware compatibility, known issues, rollback image, maintenance window and regression test plan.
  2. Inspect peer state, interfaces, LSA database, filtering, route installs and expected next hops.
  3. Inspect aggregate state, member operational rates, LACP partner/system IDs, VLAN tags and individual member counters.
  4. Inspect physical alarms, optical budget, loopback results, error history, supported optics and redundant-path readiness.

Explanation

Correct Answer

B:

Inspect peer state, interfaces, LSA database, filtering, route installs and expected next hops. These observations distinguish the stated fault or prerequisite from an unrelated feature. A broad redistribution change can leak unwanted networks; OSPF repair should target the proven mismatch. The corresponding action is: Restore an OSPF adjacency or missing advertisement using targeted parameter, area or redistribution corrections with route verification. Scenario: A team proposes clearing every routing process to fix a single rejected OSPF neighbor.

Incorrect Answers

A:

Review model firmware compatibility, known issues, rollback image, maintenance window and regression test plan. These checks can help with Validation-first firmware defect remediation, but they are not the most discriminating first evidence here. Examine: Inspect peer state, interfaces, LSA database, filtering, route installs and expected next hops. Scenario: A team proposes clearing every routing process to fix a single rejected OSPF neighbor.

C:

Inspect aggregate state, member operational rates, LACP partner/system IDs, VLAN tags and individual member counters. These checks can help with LACP link aggregation member consistency, but they are not the most discriminating first evidence here. Examine: Inspect peer state, interfaces, LSA database, filtering, route installs and expected next hops. Scenario: A team proposes clearing every routing process to fix a single rejected OSPF neighbor.

D:

Inspect physical alarms, optical budget, loopback results, error history, supported optics and redundant-path readiness. These checks can help with Optic and port fault replacement strategy, but they are not the most discriminating first evidence here. Examine: Inspect peer state, interfaces, LSA database, filtering, route installs and expected next hops. Scenario: A team proposes clearing every routing process to fix a single rejected OSPF neighbor.

Question 86

An access closet needs one managed stack but its engineer specifies VSX without supported peer hardware. Which switching implementation or corrective action BEST addresses the underlying requirement?

  1. Turn a wired network design into sequenced change steps with prerequisites, measurable acceptance tests, decision gates and rollback.
  2. Map every customer requirement to an implementation control, validation evidence, accountable owner and acceptable failure behavior.
  3. Determine whether an access stack, multi-chassis VSX pair or independent routed switch pair best satisfies topology and failure-control objectives.
  4. Record deliberate changes in running configuration, save the intended startup state and use checkpoints or diffs as an auditable rollback option.

Explanation

Correct Answer

C:

Determine whether an access stack, multi-chassis VSX pair or independent routed switch pair best satisfies topology and failure-control objectives. This addresses the controlling network requirement rather than merely changing its symptoms. VSF presents a logical stack while VSX supports peer coordination with independent control planes on appropriate platforms. Verify before and after with: Review supported VSF or VSX platforms, physical interconnects, control-plane independence, role design and failover requirements. Scenario: An access closet needs one managed stack but its engineer specifies VSX without supported peer hardware.

Incorrect Answers

A:

Turn a wired network design into sequenced change steps with prerequisites, measurable acceptance tests, decision gates and rollback. This action instead applies to Implementation plan preflight and rollback criteria. A network drawing is not an implementation plan without timing, safe transitions and testable rollback. It does not directly resolve the controlling requirement. The targeted response is: Determine whether an access stack, multi-chassis VSX pair or independent routed switch pair best satisfies topology and failure-control objectives. Scenario: An access closet needs one managed stack but its engineer specifies VSX without supported peer hardware.

B:

Map every customer requirement to an implementation control, validation evidence, accountable owner and acceptable failure behavior. This action instead applies to Requirements-to-configuration traceability matrix. A checklist of completed CLI commands is not proof that the business service objectives were met. It does not directly resolve the controlling requirement. The targeted response is: Determine whether an access stack, multi-chassis VSX pair or independent routed switch pair best satisfies topology and failure-control objectives. Scenario: An access closet needs one managed stack but its engineer specifies VSX without supported peer hardware.

D:

Record deliberate changes in running configuration, save the intended startup state and use checkpoints or diffs as an auditable rollback option. This action instead applies to AOS-CX configuration save and checkpoint workflow. A running change does not become a persistent boot baseline automatically without the appropriate save process. It does not directly resolve the controlling requirement. The targeted response is: Determine whether an access stack, multi-chassis VSX pair or independent routed switch pair best satisfies topology and failure-control objectives. Scenario: An access closet needs one managed stack but its engineer specifies VSX without supported peer hardware.

Question 87

Performance deteriorates after a QoS template revision but the team compares only current interface state. Which switching implementation or corrective action BEST addresses the underlying requirement?

  1. Correlate system logs, NTP timestamps and interface or protocol counters to reconstruct network incidents accurately.
  2. Maintain accurate switch asset inventory, optics, warranty, software versions, support contract and management license state.
  3. Interpret switch resource, interface and protocol snapshots against a known-good baseline and recent change history.
  4. Prepare rack units, air flow, dual power paths, cable labeling and OOB management before powering the switching hardware.

Explanation

Correct Answer

C:

Interpret switch resource, interface and protocol snapshots against a known-good baseline and recent change history. This addresses the controlling network requirement rather than merely changing its symptoms. A baseline is a set of comparable conditions, not a single healthy green status indicator. Verify before and after with: Compare firmware, config diffs, CPU/memory, temperature, traffic rates and log markers for the relevant period. Scenario: Performance deteriorates after a QoS template revision but the team compares only current interface state.

Incorrect Answers

A:

Correlate system logs, NTP timestamps and interface or protocol counters to reconstruct network incidents accurately. This action instead applies to AOS-CX log event and timestamp correlation. Logs from unaligned clocks can invert event order and create false conclusions about fault propagation. It does not directly resolve the controlling requirement. The targeted response is: Interpret switch resource, interface and protocol snapshots against a known-good baseline and recent change history. Scenario: Performance deteriorates after a QoS template revision but the team compares only current interface state.

B:

Maintain accurate switch asset inventory, optics, warranty, software versions, support contract and management license state. This action instead applies to Inventory and licensing lifecycle control. Inventory quality affects support and maintenance; a running switch is not proof its services or support are entitled. It does not directly resolve the controlling requirement. The targeted response is: Interpret switch resource, interface and protocol snapshots against a known-good baseline and recent change history. Scenario: Performance deteriorates after a QoS template revision but the team compares only current interface state.

D:

Prepare rack units, air flow, dual power paths, cable labeling and OOB management before powering the switching hardware. This action instead applies to Physical installation and rack power implementation. Physical readiness and power failure domains must be verified independently from logical port configuration. It does not directly resolve the controlling requirement. The targeted response is: Interpret switch resource, interface and protocol snapshots against a known-good baseline and recent change history. Scenario: Performance deteriorates after a QoS template revision but the team compares only current interface state.

Question 88

A collector discards interface identifiers after a stack member change and falsely reports port disappearance. Which TWO complementary steps identify the appropriate network response AND the evidence needed to verify it? Select TWO.

  1. Inspect replacement model compatibility, firmware, backup checksum, device identity, port map and management integration.
  2. Review monitoring credentials, SNMPv3 settings, streaming telemetry support, collector identity, interval and privacy requirements.
  3. Measure routing neighbor uptime, route churn and failover behavior across OSPF or BGP rather than relying on one point-in-time state.
  4. The failing service recovers after a traceable bounded change and its original healthy behavior remains intact.
  5. Use authorized telemetry access, polling cadence and data retention to collect switch statistics without overwhelming platforms.

Explanation

Correct Answers

B:

Review monitoring credentials, SNMPv3 settings, streaming telemetry support, collector identity, interval and privacy requirements. These observations distinguish the stated fault or prerequisite from an unrelated feature. Telemetry collection needs secure credentials, suitable cadence and source-specific metric interpretation. The corresponding action is: Use authorized telemetry access, polling cadence and data retention to collect switch statistics without overwhelming platforms. This choice supplies the diagnostic or verification half of the pair. Scenario: A collector discards interface identifiers after a stack member change and falsely reports port disappearance.

E:

Use authorized telemetry access, polling cadence and data retention to collect switch statistics without overwhelming platforms. This addresses the controlling network requirement rather than merely changing its symptoms. Telemetry collection needs secure credentials, suitable cadence and source-specific metric interpretation. Verify before and after with: Review monitoring credentials, SNMPv3 settings, streaming telemetry support, collector identity, interval and privacy requirements. This choice supplies the implementation half of the requested pair. Scenario: A collector discards interface identifiers after a stack member change and falsely reports port disappearance.

Incorrect Answers

A:

Inspect replacement model compatibility, firmware, backup checksum, device identity, port map and management integration. This step pertains to Backup restoration and replacement switch workflow but is not one of the two complementary decisions in this case. The required response and evidence are: Use authorized telemetry access, polling cadence and data retention to collect switch statistics without overwhelming platforms. Together with: Review monitoring credentials, SNMPv3 settings, streaming telemetry support, collector identity, interval and privacy requirements. Scenario: A collector discards interface identifiers after a stack member change and falsely reports port disappearance.

C:

Measure routing neighbor uptime, route churn and failover behavior across OSPF or BGP rather than relying on one point-in-time state. This step pertains to Routing adjacency and convergence telemetry interpretation but is not one of the two complementary decisions in this case. The required response and evidence are: Use authorized telemetry access, polling cadence and data retention to collect switch statistics without overwhelming platforms. Together with: Review monitoring credentials, SNMPv3 settings, streaming telemetry support, collector identity, interval and privacy requirements. Scenario: A collector discards interface identifiers after a stack member change and falsely reports port disappearance.

D:

The failing service recovers after a traceable bounded change and its original healthy behavior remains intact. This step pertains to Minimal-change rollback and restoration plan but is not one of the two complementary decisions in this case. The required response and evidence are: Use authorized telemetry access, polling cadence and data retention to collect switch statistics without overwhelming platforms. Together with: Review monitoring credentials, SNMPv3 settings, streaming telemetry support, collector identity, interval and privacy requirements. Scenario: A collector discards interface identifiers after a stack member change and falsely reports port disappearance.

Question 89

Digital signage traffic unexpectedly floods every port after the IGMP querier disappears. Which switching implementation or corrective action BEST addresses the underlying requirement?

  1. Use high-frequency interface and queue evidence to distinguish short microbursts from sustained bandwidth saturation.
  2. Establish prechange checkpoints, defined retention and restore testing for AOS-CX configuration changes across managed devices.
  3. Separate ISL interruption, keepalive loss and downlink MC-LAG member faults in a VSX pair using peer-state evidence.
  4. Locate excess multicast replication or lost group membership using IGMP/PIM state and per-port traffic evidence.

Explanation

Correct Answer

D:

Locate excess multicast replication or lost group membership using IGMP/PIM state and per-port traffic evidence. This addresses the controlling network requirement rather than merely changing its symptoms. Multicast forwarding depends on group state and querier or PIM control, not merely the VLAN number. Verify before and after with: Inspect multicast group forwarding table, membership timers, querier identity, PIM RPF path and interface counters. Scenario: Digital signage traffic unexpectedly floods every port after the IGMP querier disappears.

Incorrect Answers

A:

Use high-frequency interface and queue evidence to distinguish short microbursts from sustained bandwidth saturation. This action instead applies to Microburst and oversubscription performance analysis. Five-minute average utilization may conceal millisecond microbursts that exhaust shallow queues. It does not directly resolve the controlling requirement. The targeted response is: Locate excess multicast replication or lost group membership using IGMP/PIM state and per-port traffic evidence. Scenario: Digital signage traffic unexpectedly floods every port after the IGMP querier disappears.

B:

Establish prechange checkpoints, defined retention and restore testing for AOS-CX configuration changes across managed devices. This action instead applies to Configuration checkpoint and rollback retention. A config backup is useful only when its location, currency and restore procedure can be demonstrated. It does not directly resolve the controlling requirement. The targeted response is: Locate excess multicast replication or lost group membership using IGMP/PIM state and per-port traffic evidence. Scenario: Digital signage traffic unexpectedly floods every port after the IGMP querier disappears.

C:

Separate ISL interruption, keepalive loss and downlink MC-LAG member faults in a VSX pair using peer-state evidence. This action instead applies to VSX peer and keepalive failure symptom isolation. Independent VSX peer control planes require distinct peer communications; ISL and keepalive carry different roles. It does not directly resolve the controlling requirement. The targeted response is: Locate excess multicast replication or lost group membership using IGMP/PIM state and per-port traffic evidence. Scenario: Digital signage traffic unexpectedly floods every port after the IGMP querier disappears.

Question 90

A multi-building campus wants a single distribution switch and overlooks the failure domain it creates. Which switching implementation or corrective action BEST addresses the underlying requirement?

  1. Check whether proposed Aruba Central or HPE management features require subscriptions, connectivity or supported device enrollment.
  2. Prepare rack units, air flow, dual power paths, cable labeling and OOB management before powering the switching hardware.
  3. Identify LAG members that fail to bundle due to system ID, LACP mode, peer-group, speed or VLAN incompatibility.
  4. Size distributed or collapsed core switching based on site scale, resilient paths, routed boundaries and maintenance windows.

Explanation

Correct Answer

D:

Size distributed or collapsed core switching based on site scale, resilient paths, routed boundaries and maintenance windows. This addresses the controlling network requirement rather than merely changing its symptoms. Topology choice should follow the failure and growth profile, not simply replicate a large-campus diagram at every site. Verify before and after with: Examine site topology, switch count, uplink capacity, failure domains and convergence requirements. Scenario: A multi-building campus wants a single distribution switch and overlooks the failure domain it creates.

Incorrect Answers

A:

Check whether proposed Aruba Central or HPE management features require subscriptions, connectivity or supported device enrollment. This action instead applies to Campus management and licensing boundaries. A product purchase and access to a cloud management feature are distinct licensing and onboarding decisions. It does not directly resolve the controlling requirement. The targeted response is: Size distributed or collapsed core switching based on site scale, resilient paths, routed boundaries and maintenance windows. Scenario: A multi-building campus wants a single distribution switch and overlooks the failure domain it creates.

B:

Prepare rack units, air flow, dual power paths, cable labeling and OOB management before powering the switching hardware. This action instead applies to Physical installation and rack power implementation. Physical readiness and power failure domains must be verified independently from logical port configuration. It does not directly resolve the controlling requirement. The targeted response is: Size distributed or collapsed core switching based on site scale, resilient paths, routed boundaries and maintenance windows. Scenario: A multi-building campus wants a single distribution switch and overlooks the failure domain it creates.

C:

Identify LAG members that fail to bundle due to system ID, LACP mode, peer-group, speed or VLAN incompatibility. This action instead applies to LACP aggregation mismatch investigation. A connected Ethernet cable does not establish a valid LACP member when peer and interface attributes differ. It does not directly resolve the controlling requirement. The targeted response is: Size distributed or collapsed core switching based on site scale, resilient paths, routed boundaries and maintenance windows. Scenario: A multi-building campus wants a single distribution switch and overlooks the failure domain it creates.

HPE Network Switching Professional (HPE7-A08) Practice Tests