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Question 770
A recurring optical outage keeps being fixed by reseating the same module. What longer-term activity is appropriate?
- Keep approved software and policy inventory current
- Record objective performance baseline
- Check functional service acceptance
- Review change incidents for systemic causes
Explanation
Correct Answer
D:Investigate systemic cause, trend failures and define prevention. Repeated events warrant root cause and prevention rather than only immediate patching.
Incorrect Answers
A:Maintain records of running image, configurations, owned role and group membership. But this does not address the case requirement to stop repeated incidents instead of repeating workaround.
B:Capture utilization, errors, loss, latency and application transaction measurements after maintenance. But this does not address the case requirement to stop repeated incidents instead of repeating workaround.
C:Validate the endpoints, protocol adjacencies and traffic paths that users actually depend on. But this does not address the case requirement to stop repeated incidents instead of repeating workaround.
Question 771
Inventory lists old CX firmware after all switches were upgraded. What record must be reconciled?
- Update capacity and lifecycle forecast
- Check functional service acceptance
- Keep approved software and policy inventory current
- Consolidate support handoff details
Explanation
Correct Answer
C:Refresh asset and software baseline from actual running state. Maintain records of running image, configurations, owned role and group membership.
Incorrect Answers
A:Growth in ports, optics, PoE and uplink throughput should influence future upgrade planning. But this does not address the case requirement to maintain accurate operating inventory.
B:Validate the endpoints, protocol adjacencies and traffic paths that users actually depend on. But this does not address the case requirement to maintain accurate operating inventory.
D:Document accepted configurations, alarms, escalation contacts and remaining work. But this does not address the case requirement to maintain accurate operating inventory.
Question 772
The management plane answers, but users cannot reach file services after change; which closeout criterion should decide success?
- Update capacity and lifecycle forecast
- Record objective performance baseline
- Review change incidents for systemic causes
- Check functional service acceptance
Explanation
Correct Answer
D:Verify end-to-end client service and approved control policy. Validate the endpoints, protocol adjacencies and traffic paths that users actually depend on.
Incorrect Answers
A:Growth in ports, optics, PoE and uplink throughput should influence future upgrade planning. But this does not address the case requirement to ensure maintenance restored user outcomes.
B:Capture utilization, errors, loss, latency and application transaction measurements after maintenance. But this does not address the case requirement to ensure maintenance restored user outcomes.
C:Repeated events warrant root cause and prevention rather than only immediate patching. But this does not address the case requirement to ensure maintenance restored user outcomes.
Question 773
New AP models draw more power than the switch budget and usage is rising. What capacity step follows?
- Keep approved software and policy inventory current
- Check functional service acceptance
- Consolidate support handoff details
- Update capacity and lifecycle forecast
Explanation
Correct Answer
D:Forecast additional PoE and switching resources before expansion. Growth in ports, optics, PoE and uplink throughput should influence future upgrade planning.
Incorrect Answers
A:Maintain records of running image, configurations, owned role and group membership. But this does not address the case requirement to avoid future endpoint power shortages.
B:Validate the endpoints, protocol adjacencies and traffic paths that users actually depend on. But this does not address the case requirement to avoid future endpoint power shortages.
C:Document accepted configurations, alarms, escalation contacts and remaining work. But this does not address the case requirement to avoid future endpoint power shortages.
Question 774
Over one month a site has six repeating OSPF resets after unrelated changes. What program-level action is needed?
- Review change incidents for systemic causes
- Keep approved software and policy inventory current
- Update capacity and lifecycle forecast
- Check functional service acceptance
Explanation
Correct Answer
A:Conduct trend-driven root-cause review and prevention planning. Repeated events warrant root cause and prevention rather than only immediate patching.
Incorrect Answers
B:Maintain records of running image, configurations, owned role and group membership. But this does not address the case requirement to correct persistent recurring instability.
C:Growth in ports, optics, PoE and uplink throughput should influence future upgrade planning. But this does not address the case requirement to correct persistent recurring instability.
D:Validate the endpoints, protocol adjacencies and traffic paths that users actually depend on. But this does not address the case requirement to correct persistent recurring instability.
Question 775
A campus switch reports 30,000 new CRC errors on one uplink but only 22% utilization. Which operational evidence should guide the first action?
- Measure optic receive and transmit power
- Measure interface utilization and discards
- Check link up/down transition counters
- Inspect CRC and FCS corruption
Explanation
Correct Answer
D:Track frame errors and investigate fiber/copper signal integrity. Increasing frame-check errors indicate signal or medium defects and justify targeted physical inspection.
Incorrect Answers
A:Light-level readings help verify the optical budget and identify attenuation or failed transceivers. But this does not address the case requirement to diagnose physical corruption.
B:A port near line rate with egress drops calls for capacity and queue analysis. But this does not address the case requirement to diagnose physical corruption.
C:Many interface transitions indicate flapping that can interrupt sessions despite low average utilization. But this does not address the case requirement to diagnose physical corruption.
Question 776
Users lose connections every few minutes and interface transition count rose from 2 to 240. What measurement best explains it?
- Measure optic receive and transmit power
- Check link up/down transition counters
- Inspect administrative enable state
- Inspect CRC and FCS corruption
Explanation
Correct Answer
B:Frequent carrier transitions show a flapping link. Many interface transitions indicate flapping that can interrupt sessions despite low average utilization.
Incorrect Answers
A:Light-level readings help verify the optical budget and identify attenuation or failed transceivers. But this does not address the case requirement to identify repeated link interruption.
C:A disabled port cannot forward regardless of optical health or learned VLAN configuration. But this does not address the case requirement to identify repeated link interruption.
D:Increasing frame-check errors indicate signal or medium defects and justify targeted physical inspection. But this does not address the case requirement to identify repeated link interruption.
Question 777
A fiber receiver reports -19dBm with module minimum -12dBm. What is the appropriate diagnostic reading?
- Inspect CRC and FCS corruption
- Measure optic receive and transmit power
- Review negotiated link speed
- Check link up/down transition counters
Explanation
Correct Answer
B:Optical power is below the permitted operating range and should be investigated. Light-level readings help verify the optical budget and identify attenuation or failed transceivers.
Incorrect Answers
A:Increasing frame-check errors indicate signal or medium defects and justify targeted physical inspection. But this does not address the case requirement to interpret weak optical receive signal.
C:The observed operating rate may be below design due to cabling, transceiver or endpoint limitations. But this does not address the case requirement to interpret weak optical receive signal.
D:Many interface transitions indicate flapping that can interrupt sessions despite low average utilization. But this does not address the case requirement to interpret weak optical receive signal.
Question 778
A planned 10G uplink is actually negotiated at 1G. Which status should operators compare to the deployment specification?
- Inspect administrative enable state
- Measure optic receive and transmit power
- Check link up/down transition counters
- Review negotiated link speed
Explanation
Correct Answer
D:Read negotiated speed on both peers and investigate support and media. The observed operating rate may be below design due to cabling, transceiver or endpoint limitations.
Incorrect Answers
A:A disabled port cannot forward regardless of optical health or learned VLAN configuration. But this does not address the case requirement to identify speed mismatch.
B:Light-level readings help verify the optical budget and identify attenuation or failed transceivers. But this does not address the case requirement to identify speed mismatch.
C:Many interface transitions indicate flapping that can interrupt sessions despite low average utilization. But this does not address the case requirement to identify speed mismatch.
Question 779
A distribution egress sustains 98% utilization and has rising output discards with zero CRC errors. What should be analyzed?
- Measure optic receive and transmit power
- Inspect CRC and FCS corruption
- Check link up/down transition counters
- Measure interface utilization and discards
Explanation
Correct Answer
D:Saturation and output queue drops indicate a capacity issue. A port near line rate with egress drops calls for capacity and queue analysis.
Incorrect Answers
A:Light-level readings help verify the optical budget and identify attenuation or failed transceivers. But this does not address the case requirement to interpret throughput versus egress loss.
B:Increasing frame-check errors indicate signal or medium defects and justify targeted physical inspection. But this does not address the case requirement to interpret throughput versus egress loss.
C:Many interface transitions indicate flapping that can interrupt sessions despite low average utilization. But this does not address the case requirement to interpret throughput versus egress loss.
Question 780
No errors or optical warnings appear, but show interface reports administratively down on a commissioned link. What state requires review?
- Measure optic receive and transmit power
- Check link up/down transition counters
- Measure interface utilization and discards
- Inspect administrative enable state
Explanation
Correct Answer
D:The shutdown configuration prevents link forwarding. A disabled port cannot forward regardless of optical health or learned VLAN configuration.
Incorrect Answers
A:Light-level readings help verify the optical budget and identify attenuation or failed transceivers. But this does not address the case requirement to identify intentional port disable.
B:Many interface transitions indicate flapping that can interrupt sessions despite low average utilization. But this does not address the case requirement to identify intentional port disable.
C:A port near line rate with egress drops calls for capacity and queue analysis. But this does not address the case requirement to identify intentional port disable.
HPE Network Switching Professional (HPE7-A08) Practice Tests