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Question 210
A routing protocol was configured but no neighbor forms. What output should be collected?
- Check running configuration
- Compare startup and running state
- Inspect neighbor and route state
- Use change checkpoint and rollback
Explanation
Correct Answer
C:Neighbor and route status distinguish configured intent from actual adjacency. Routing and LACP control-plane show commands confirm peer and path formation.
Incorrect Answers
A:The running configuration represents current active device settings at the time of inspection. But this does not address the case requirement to verify active control-plane peers.
B:Differences explain why runtime fixes may not persist over a restart. But this does not address the case requirement to verify active control-plane peers.
D:A documented rollback state limits damage from failed configuration changes. But this does not address the case requirement to verify active control-plane peers.
Question 211
A guest ACL seems ignored on a VLAN. Which configuration evidence should be checked?
- Review applied ACL or policy
- Use change checkpoint and rollback
- Compare startup and running state
- Check running configuration
Explanation
Correct Answer
A:Effective applied policy and counters show which rules attach and match. Show commands can identify effective security settings and statistics on supported interfaces.
Incorrect Answers
B:A documented rollback state limits damage from failed configuration changes. But this does not address the case requirement to confirm packet filtering is in effect.
C:Differences explain why runtime fixes may not persist over a restart. But this does not address the case requirement to confirm packet filtering is in effect.
D:The running configuration represents current active device settings at the time of inspection. But this does not address the case requirement to confirm packet filtering is in effect.
Question 212
A VLAN fix disappears after restart. Which comparison reveals likely cause?
- Inspect interface operational status
- Compare startup and running state
- Review applied ACL or policy
- Check running configuration
Explanation
Correct Answer
B:Startup and current running settings may differ if unsaved. Differences explain why runtime fixes may not persist over a restart.
Incorrect Answers
A:Link speed, errors, state and negotiated settings reveal physical behavior. But this does not address the case requirement to identify uncommitted running changes.
C:Show commands can identify effective security settings and statistics on supported interfaces. But this does not address the case requirement to identify uncommitted running changes.
D:The running configuration represents current active device settings at the time of inspection. But this does not address the case requirement to identify uncommitted running changes.
Question 213
A routing change breaks access and the team needs to restore earlier validated settings. What preparation helps?
- Use change checkpoint and rollback
- Review applied ACL or policy
- Inspect interface operational status
- Inspect neighbor and route state
Explanation
Correct Answer
A:A checkpoint supports controlled rollback. A documented rollback state limits damage from failed configuration changes.
Incorrect Answers
B:Show commands can identify effective security settings and statistics on supported interfaces. But this does not address the case requirement to return the switch to a known-good configuration.
C:Link speed, errors, state and negotiated settings reveal physical behavior. But this does not address the case requirement to return the switch to a known-good configuration.
D:Routing and LACP control-plane show commands confirm peer and path formation. But this does not address the case requirement to return the switch to a known-good configuration.
Question 214
After enabling OSPF, the port still has zero received hellos. Which observation is most informative?
- Check running configuration
- Inspect neighbor and route state
- Review applied ACL or policy
- Compare startup and running state
Explanation
Correct Answer
B:Neighbor-state information exposes protocol formation progress. Routing and LACP control-plane show commands confirm peer and path formation.
Incorrect Answers
A:The running configuration represents current active device settings at the time of inspection. But this does not address the case requirement to find why a routing peer did not become adjacent.
C:Show commands can identify effective security settings and statistics on supported interfaces. But this does not address the case requirement to find why a routing peer did not become adjacent.
D:Differences explain why runtime fixes may not persist over a restart. But this does not address the case requirement to find why a routing peer did not become adjacent.
Question 215
An ACL rule appears in the config but has no counters and is not applied to the relevant interface. What should be inspected?
- Inspect neighbor and route state
- Review applied ACL or policy
- Use change checkpoint and rollback
- Compare startup and running state
Explanation
Correct Answer
B:Applied policy bindings matter more than merely defined rule text. Show commands can identify effective security settings and statistics on supported interfaces.
Incorrect Answers
A:Routing and LACP control-plane show commands confirm peer and path formation. But this does not address the case requirement to validate effective interface enforcement.
C:A documented rollback state limits damage from failed configuration changes. But this does not address the case requirement to validate effective interface enforcement.
D:Differences explain why runtime fixes may not persist over a restart. But this does not address the case requirement to validate effective interface enforcement.
Question 216
A stack member reports repeated physical CRC increases. What operational data should guide the next step?
- Inspect neighbor and route state
- Inspect interface operational status
- Use change checkpoint and rollback
- Check running configuration
Explanation
Correct Answer
B:Port status and counters help isolate media and link defects. Link speed, errors, state and negotiated settings reveal physical behavior.
Incorrect Answers
A:Routing and LACP control-plane show commands confirm peer and path formation. But this does not address the case requirement to inspect errors rather than changing higher-layer routes.
C:A documented rollback state limits damage from failed configuration changes. But this does not address the case requirement to inspect errors rather than changing higher-layer routes.
D:The running configuration represents current active device settings at the time of inspection. But this does not address the case requirement to inspect errors rather than changing higher-layer routes.
Question 217
A pair of chassis exhaust warm air into each other's intake vents. What installation issue should be corrected?
- Copper speed and channel validation
- Rack and airflow verification
- Fiber optic compatibility
- Installation validation checklist
Explanation
Correct Answer
B:Airflow direction and thermal clearance are installation prerequisites. Supported rack spacing, air direction and ambient limits are required for reliable hardware operation.
Incorrect Answers
A:Copper cabling category, distance and negotiated speed must suit the intended Ethernet service. But this does not address the case requirement to keep hardware cooling within vendor limits.
C:Transceiver speed, wavelength and cable type must match peer and distance specifications. But this does not address the case requirement to keep hardware cooling within vendor limits.
D:Link, alarms, power and environmental checks provide evidence before handover. But this does not address the case requirement to keep hardware cooling within vendor limits.
Question 218
Two redundant power supplies are plugged into one failing outlet strip. What arrangement would address this?
- Independent power and grounding
- Installation validation checklist
- Port and cable documentation
- Copper speed and channel validation
Explanation
Correct Answer
A:Independent feeds reduce correlated power outages. Correct supplies and independent power feeds mitigate environmental failures where supported.
Incorrect Answers
B:Link, alarms, power and environmental checks provide evidence before handover. But this does not address the case requirement to achieve electrical power-path resilience.
C:Labeling and as-built records identify exact switch and neighbor interfaces for serviceability. But this does not address the case requirement to achieve electrical power-path resilience.
D:Copper cabling category, distance and negotiated speed must suit the intended Ethernet service. But this does not address the case requirement to achieve electrical power-path resilience.
Question 219
Single-mode fiber was installed but an unsupported multi-mode optic is supplied. What must be changed?
- Rack and airflow verification
- Installation validation checklist
- Fiber optic compatibility
- Port and cable documentation
Explanation
Correct Answer
C:Fiber and transceiver media must be compatible. Transceiver speed, wavelength and cable type must match peer and distance specifications.
Incorrect Answers
A:Supported rack spacing, air direction and ambient limits are required for reliable hardware operation. But this does not address the case requirement to build a valid optical link over the installed cable.
B:Link, alarms, power and environmental checks provide evidence before handover. But this does not address the case requirement to build a valid optical link over the installed cable.
D:Labeling and as-built records identify exact switch and neighbor interfaces for serviceability. But this does not address the case requirement to build a valid optical link over the installed cable.
Question 220
A 170m copper run is expected to carry standard gigabit Ethernet without repeaters. What should be investigated?
- Port and cable documentation
- Copper speed and channel validation
- Rack and airflow verification
- Installation validation checklist
Explanation
Correct Answer
B:Copper physical standards limit reliable channel distance. Copper cabling category, distance and negotiated speed must suit the intended Ethernet service.
Incorrect Answers
A:Labeling and as-built records identify exact switch and neighbor interfaces for serviceability. But this does not address the case requirement to respect rated copper link characteristics.
C:Supported rack spacing, air direction and ambient limits are required for reliable hardware operation. But this does not address the case requirement to respect rated copper link characteristics.
D:Link, alarms, power and environmental checks provide evidence before handover. But this does not address the case requirement to respect rated copper link characteristics.
HPE Network Switching Professional (HPE7-A08) Practice Tests