HP HPE7-A08 Practice Test 40

Question 390

Before changing switch configuration, an engineer investigates: A bundle reports suspended members while each individual port appears link-up. Which FIRST check is most useful for isolating the cause?

Inspect OSPF interface flags, neighbor messages and authentication
Inspect LACP partner state, aggregator key and member operational state
Inspect applied ACL rules, role decisions and traffic counters
Inspect trunk tagging and VLAN membership on the complete path

Explanation

Correct Answer

Inspect LACP partner state, aggregator key and member operational state. This first check isolates the relevant mechanism without an untested configuration change. It tests the rule that an operational LAG depends on compatible partner identity and settings.

Incorrect Answers

This diagnostic choice fits a different situation: An OSPF neighbor remains down despite successful ICMP pings between peers. It does not resolve the stated failure mode. For this case, the decisive diagnostic choice is to inspect LACP partner state, aggregator key and member operational state.

This diagnostic choice fits a different situation: Only a restricted subnet is unreachable while all ordinary traffic passes. It does not resolve the stated failure mode. For this case, the decisive diagnostic choice is to inspect LACP partner state, aggregator key and member operational state.

This diagnostic choice fits a different situation: A printer in VLAN 30 works locally but cannot reach a print server over an uplink. It does not resolve the stated failure mode. For this case, the decisive diagnostic choice is to inspect LACP partner state, aggregator key and member operational state.

Question 391

An implementation change is planned for: A bundle reports suspended members while each individual port appears link-up. Which preventive control BEST reduces unnecessary outage and security risk?

Test both failure channels independently during commissioning
Test allow and deny flows under representative identities
Include per-VLAN uplink tests in deployment acceptance
Document matched peer configuration before connecting extra members

Explanation

Correct Answer

Document matched peer configuration before connecting extra members. This safeguard is appropriate before the change to identify a LACP peer or member consistency issue in the aggregate; it reduces exposure to the mistake of assuming physical carrier alone proves successful aggregation.

Incorrect Answers

This prevention choice fits a different situation: A VSX pair loses downstream LAG forwarding after an ISL interruption. It does not resolve the stated failure mode. For this case, the decisive prevention choice is to document matched peer configuration before connecting extra members.

This prevention choice fits a different situation: Only a restricted subnet is unreachable while all ordinary traffic passes. It does not resolve the stated failure mode. For this case, the decisive prevention choice is to document matched peer configuration before connecting extra members.

This prevention choice fits a different situation: A printer in VLAN 30 works locally but cannot reach a print server over an uplink. It does not resolve the stated failure mode. For this case, the decisive prevention choice is to document matched peer configuration before connecting extra members.

Question 392

A first repair attempt for this situation failed: A bundle reports suspended members while each individual port appears link-up. The review found the mistaken approach of assuming physical carrier alone proves successful aggregation. Which targeted recovery action BEST restores the intended design?

Align the OSPF peer parameters and confirm convergence
Replace the defective optic or patch and confirm error counters stabilize
Correct the mismatched member parameters and re-form the LAG
Restore the intended admin state and validate the port profile

Explanation

Correct Answer

Correct the mismatched member parameters and re-form the LAG. This addresses the observed risk rather than hiding its symptoms. Confirm the repair when the matched members become active after peer settings are aligned.

Incorrect Answers

This remediation choice fits a different situation: An OSPF neighbor remains down despite successful ICMP pings between peers. It does not resolve the stated failure mode. For this case, the decisive remediation choice is to correct the mismatched member parameters and re-form the LAG.

This remediation choice fits a different situation: A fiber connection logs high FCS errors and periodically loses carrier. It does not resolve the stated failure mode. For this case, the decisive remediation choice is to correct the mismatched member parameters and re-form the LAG.

This remediation choice fits a different situation: An access port shows administratively down even with a working patch cable. It does not resolve the stated failure mode. For this case, the decisive remediation choice is to correct the mismatched member parameters and re-form the LAG.

Question 393

An HPE Aruba Networking engineer faces this wired-network scenario: An OSPF neighbor remains down despite successful ICMP pings between peers. Which implementation action BEST addresses the requirement?

Identify the absent or incorrect DHCP relay and server reachability
Identify likely optic or fiber-layer faults using counters and optical diagnostics
Identify the relevant ACL or role policy drop on the forwarding path
Identify mismatched area, timer, authentication or network settings

Explanation

Correct Answer

OSPF control-plane compatibility differs from simple IP reachability. The targeted implementation is to identify mismatched area, timer, authentication or network settings. The deployment succeeds when oSPF neighbors reach the intended state and routes appear after repair.

Incorrect Answers

This implementation choice fits a different situation: A branch receives no DHCP leases following a routed VLAN migration. It does not resolve the stated failure mode. For this case, the decisive implementation choice is to identify mismatched area, timer, authentication or network settings.

This implementation choice fits a different situation: A fiber connection logs high FCS errors and periodically loses carrier. It does not resolve the stated failure mode. For this case, the decisive implementation choice is to identify mismatched area, timer, authentication or network settings.

This implementation choice fits a different situation: Only a restricted subnet is unreachable while all ordinary traffic passes. It does not resolve the stated failure mode. For this case, the decisive implementation choice is to identify mismatched area, timer, authentication or network settings.

Question 394

After implementing the approved change — Identify mismatched area, timer, authentication or network settings — for this scenario: An OSPF neighbor remains down despite successful ICMP pings between peers. Which observed result BEST verifies the outcome?

Allowed traffic continues and the denied traffic matches the documented policy
OSPF neighbors reach the intended state and routes appear after repair
The matched members become active after peer settings are aligned
The target VLAN appears in effective trunk membership and test packets pass

Explanation

Correct Answer

OSPF neighbors reach the intended state and routes appear after repair. This is the observable acceptance evidence for the decision to identify mismatched area, timer, authentication or network settings. It demonstrates the principle that oSPF control-plane compatibility differs from simple IP reachability.

Incorrect Answers

This verification choice fits a different situation: Only a restricted subnet is unreachable while all ordinary traffic passes. It does not resolve the stated failure mode. For this case, the decisive verification choice is to oSPF neighbors reach the intended state and routes appear after repair.

This verification choice fits a different situation: A bundle reports suspended members while each individual port appears link-up. It does not resolve the stated failure mode. For this case, the decisive verification choice is to oSPF neighbors reach the intended state and routes appear after repair.

This verification choice fits a different situation: A printer in VLAN 30 works locally but cannot reach a print server over an uplink. It does not resolve the stated failure mode. For this case, the decisive verification choice is to oSPF neighbors reach the intended state and routes appear after repair.

Question 395

An HPE Aruba Networking design review examines: An OSPF neighbor remains down despite successful ICMP pings between peers. Which technical principle BEST explains the required approach?

Administrative interface state is distinct from physical link detection
VSX peer split handling responds differently to ISL versus keepalive failures
A trunk omission can isolate one VLAN while leaving others operational
OSPF control-plane compatibility differs from simple IP reachability

Explanation

Correct Answer

OSPF control-plane compatibility differs from simple IP reachability. The case therefore calls for this specifically controlled action: identify mismatched area, timer, authentication or network settings. The acceptance evidence is that oSPF neighbors reach the intended state and routes appear after repair.

Incorrect Answers

This principle choice fits a different situation: An access port shows administratively down even with a working patch cable. It does not resolve the stated failure mode. For this case, the decisive principle choice is to oSPF control-plane compatibility differs from simple IP reachability.

This principle choice fits a different situation: A VSX pair loses downstream LAG forwarding after an ISL interruption. It does not resolve the stated failure mode. For this case, the decisive principle choice is to oSPF control-plane compatibility differs from simple IP reachability.

This principle choice fits a different situation: A printer in VLAN 30 works locally but cannot reach a print server over an uplink. It does not resolve the stated failure mode. For this case, the decisive principle choice is to oSPF control-plane compatibility differs from simple IP reachability.

Question 396

A risk review for the following wired-network case asks what should be avoided: An OSPF neighbor remains down despite successful ICMP pings between peers. Which assumption creates the GREATEST implementation risk?

Replacing a good cable to fix an interface explicitly shutdown
Declaring OSPF healthy because ping to the neighbor IP succeeds
Assuming the uplink is healthy for all VLANs because VLAN 10 works
Replacing uplink hardware without checking the incorrect host IP mask

Explanation

Correct Answer

Declaring OSPF healthy because ping to the neighbor IP succeeds. That shortcut fails because oSPF control-plane compatibility differs from simple IP reachability. Instead, the appropriate approach is to identify mismatched area, timer, authentication or network settings.

Incorrect Answers

This misconception choice fits a different situation: An access port shows administratively down even with a working patch cable. It does not resolve the stated failure mode. For this case, the decisive misconception choice is to declaring OSPF healthy because ping to the neighbor IP succeeds.

This misconception choice fits a different situation: A printer in VLAN 30 works locally but cannot reach a print server over an uplink. It does not resolve the stated failure mode. For this case, the decisive misconception choice is to declaring OSPF healthy because ping to the neighbor IP succeeds.

This misconception choice fits a different situation: A user host has an IP address in the wrong subnet and cannot reach its gateway. It does not resolve the stated failure mode. For this case, the decisive misconception choice is to declaring OSPF healthy because ping to the neighbor IP succeeds.

Question 397

Before changing switch configuration, an engineer investigates: An OSPF neighbor remains down despite successful ICMP pings between peers. Which FIRST check is most useful for isolating the cause?

Inspect LACP partner state, aggregator key and member operational state
Inspect admin state, link state and recent configuration changes
Inspect DHCP relay target, active SVI and server path
Inspect OSPF interface flags, neighbor messages and authentication

Explanation

Correct Answer

Inspect OSPF interface flags, neighbor messages and authentication. This first check isolates the relevant mechanism without an untested configuration change. It tests the rule that oSPF control-plane compatibility differs from simple IP reachability.

Incorrect Answers

This diagnostic choice fits a different situation: A bundle reports suspended members while each individual port appears link-up. It does not resolve the stated failure mode. For this case, the decisive diagnostic choice is to inspect OSPF interface flags, neighbor messages and authentication.

This diagnostic choice fits a different situation: An access port shows administratively down even with a working patch cable. It does not resolve the stated failure mode. For this case, the decisive diagnostic choice is to inspect OSPF interface flags, neighbor messages and authentication.

This diagnostic choice fits a different situation: A branch receives no DHCP leases following a routed VLAN migration. It does not resolve the stated failure mode. For this case, the decisive diagnostic choice is to inspect OSPF interface flags, neighbor messages and authentication.

Question 398

An implementation change is planned for: An OSPF neighbor remains down despite successful ICMP pings between peers. Which preventive control BEST reduces unnecessary outage and security risk?

Record optic and fiber validation at installation
Use a standardized OSPF peer template with staged adjacency checks
Document matched peer configuration before connecting extra members
Capture endpoint and gateway settings before escalation

Explanation

Correct Answer

Use a standardized OSPF peer template with staged adjacency checks. This safeguard is appropriate before the change to identify mismatched area, timer, authentication or network settings; it reduces exposure to the mistake of declaring OSPF healthy because ping to the neighbor IP succeeds.

Incorrect Answers

This prevention choice fits a different situation: A fiber connection logs high FCS errors and periodically loses carrier. It does not resolve the stated failure mode. For this case, the decisive prevention choice is to use a standardized OSPF peer template with staged adjacency checks.

This prevention choice fits a different situation: A bundle reports suspended members while each individual port appears link-up. It does not resolve the stated failure mode. For this case, the decisive prevention choice is to use a standardized OSPF peer template with staged adjacency checks.

This prevention choice fits a different situation: A user host has an IP address in the wrong subnet and cannot reach its gateway. It does not resolve the stated failure mode. For this case, the decisive prevention choice is to use a standardized OSPF peer template with staged adjacency checks.

Question 399

A first repair attempt for this situation failed: An OSPF neighbor remains down despite successful ICMP pings between peers. The review found the mistaken approach of declaring OSPF healthy because ping to the neighbor IP succeeds. Which targeted recovery action BEST restores the intended design?

Align the OSPF peer parameters and confirm convergence
Add only VLAN 30 to the relevant allowed lists and retest
Correct address assignment or DHCP scope and verify the local route
Repair relay settings or server route and repeat lease acquisition

Explanation

Correct Answer

Align the OSPF peer parameters and confirm convergence. This addresses the observed risk rather than hiding its symptoms. Confirm the repair when oSPF neighbors reach the intended state and routes appear after repair.

Incorrect Answers

This remediation choice fits a different situation: A printer in VLAN 30 works locally but cannot reach a print server over an uplink. It does not resolve the stated failure mode. For this case, the decisive remediation choice is to align the OSPF peer parameters and confirm convergence.

This remediation choice fits a different situation: A user host has an IP address in the wrong subnet and cannot reach its gateway. It does not resolve the stated failure mode. For this case, the decisive remediation choice is to align the OSPF peer parameters and confirm convergence.

This remediation choice fits a different situation: A branch receives no DHCP leases following a routed VLAN migration. It does not resolve the stated failure mode. For this case, the decisive remediation choice is to align the OSPF peer parameters and confirm convergence.

Question 400

An HPE Aruba Networking engineer faces this wired-network scenario: A VSX pair loses downstream LAG forwarding after an ISL interruption. Which implementation action BEST addresses the requirement?

Check both ends for an allowed VLAN 30 trunk mismatch
Identify ISL and keepalive states before modifying the peer's forwarding behavior
Identify mismatched area, timer, authentication or network settings
Identify the host mask and gateway mismatch before changing switch routing

Explanation

Correct Answer

VSX peer split handling responds differently to ISL versus keepalive failures. The targeted implementation is to identify ISL and keepalive states before modifying the peer's forwarding behavior. The deployment succeeds when vSX peer health diagnoses the safe failover state under the observed fault.

Incorrect Answers

This implementation choice fits a different situation: A printer in VLAN 30 works locally but cannot reach a print server over an uplink. It does not resolve the stated failure mode. For this case, the decisive implementation choice is to identify ISL and keepalive states before modifying the peer's forwarding behavior.

This implementation choice fits a different situation: An OSPF neighbor remains down despite successful ICMP pings between peers. It does not resolve the stated failure mode. For this case, the decisive implementation choice is to identify ISL and keepalive states before modifying the peer's forwarding behavior.

This implementation choice fits a different situation: A user host has an IP address in the wrong subnet and cannot reach its gateway. It does not resolve the stated failure mode. For this case, the decisive implementation choice is to identify ISL and keepalive states before modifying the peer's forwarding behavior.

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Pass Your HP HPE7-A08 Exam Easy!

Question 390

Explanation

Correct Answer

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Question 391

Explanation

Correct Answer

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Question 392

Explanation

Correct Answer

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Question 393

Explanation

Correct Answer

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Question 394

Explanation

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Question 395

Explanation

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Question 396

Explanation

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Question 397

Explanation

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Question 398

Explanation

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Question 399

Explanation

Correct Answer

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Question 400

Explanation

Correct Answer

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HPE Network Switching Professional (HPE7-A08) Practice Tests