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Question 30
A core proposal emphasizes onsite replacement of a faulty interface module rather than replacing an entire unit. What capability matters?
- Dual uplinks to distinct aggregation devices
- Documented transceiver interoperability
- Modular field-replaceable components
- Redundant PSUs on independent electrical feeds
Explanation
Correct Answer
C:Field-replaceable modular assemblies limit hardware replacement scope. Modular chassis can accept supported replacement power, fans or line cards without full platform replacement.
Incorrect Answers
A:Physically diverse uplinks reduce dependence on one port, cable or upstream switch. But this does not address the case requirement to swap a line card within a supported chassis.
B:Validated optical modules and interface speeds prevent incompatible media assumptions. But this does not address the case requirement to swap a line card within a supported chassis.
D:Multiple independently fed power supplies can tolerate a supply or feed failure on supported models. But this does not address the case requirement to swap a line card within a supported chassis.
Question 31
A link budget specifies single-mode fiber at a fixed wavelength but a buyer picks an unverified optic. What review is required?
- Uplink capacity headroom
- Dual uplinks to distinct aggregation devices
- Environmental hardware compliance
- Documented transceiver interoperability
Explanation
Correct Answer
D:Transceiver and fiber specifications must match supported media matrices. Validated optical modules and interface speeds prevent incompatible media assumptions.
Incorrect Answers
A:Sizing uplinks for sustained peaks and future growth avoids avoidable oversubscription bottlenecks. But this does not address the case requirement to establish compatible optic, distance and wavelength.
B:Physically diverse uplinks reduce dependence on one port, cable or upstream switch. But this does not address the case requirement to establish compatible optic, distance and wavelength.
C:Temperature, airflow and physical mounting suitability matter for closets and industrial sites. But this does not address the case requirement to establish compatible optic, distance and wavelength.
Question 32
An access block can burst above its single 1G uplink during backups. What sizing practice should precede purchase?
- Environmental hardware compliance
- Dual uplinks to distinct aggregation devices
- Uplink capacity headroom
- Documented transceiver interoperability
Explanation
Correct Answer
C:Capacity planning uses measured peaks, not only idle utilization. Sizing uplinks for sustained peaks and future growth avoids avoidable oversubscription bottlenecks.
Incorrect Answers
A:Temperature, airflow and physical mounting suitability matter for closets and industrial sites. But this does not address the case requirement to avoid congesting uplinks during expected peak demand.
B:Physically diverse uplinks reduce dependence on one port, cable or upstream switch. But this does not address the case requirement to avoid congesting uplinks during expected peak demand.
D:Validated optical modules and interface speeds prevent incompatible media assumptions. But this does not address the case requirement to avoid congesting uplinks during expected peak demand.
Question 33
A cabinet at a hot manufacturing site will exceed a normal switch environmental range. What must drive equipment selection?
- Dual uplinks to distinct aggregation devices
- Uplink capacity headroom
- Modular field-replaceable components
- Environmental hardware compliance
Explanation
Correct Answer
D:Hardware temperature ratings and airflow are design requirements. Temperature, airflow and physical mounting suitability matter for closets and industrial sites.
Incorrect Answers
A:Physically diverse uplinks reduce dependence on one port, cable or upstream switch. But this does not address the case requirement to operate within the approved environmental envelope.
B:Sizing uplinks for sustained peaks and future growth avoids avoidable oversubscription bottlenecks. But this does not address the case requirement to operate within the approved environmental envelope.
C:Modular chassis can accept supported replacement power, fans or line cards without full platform replacement. But this does not address the case requirement to operate within the approved environmental envelope.
Question 34
Two upstream closets share one fiber tray and one core device. Which design defect remains?
- Environmental hardware compliance
- Redundant PSUs on independent electrical feeds
- Dual uplinks to distinct aggregation devices
- Uplink capacity headroom
Explanation
Correct Answer
C:Physical route and device diversity are absent. Physically diverse uplinks reduce dependence on one port, cable or upstream switch.
Incorrect Answers
A:Temperature, airflow and physical mounting suitability matter for closets and industrial sites. But this does not address the case requirement to remove shared single points of failure in an uplink design.
B:Multiple independently fed power supplies can tolerate a supply or feed failure on supported models. But this does not address the case requirement to remove shared single points of failure in an uplink design.
D:Sizing uplinks for sustained peaks and future growth avoids avoidable oversubscription bottlenecks. But this does not address the case requirement to remove shared single points of failure in an uplink design.
Question 35
An architect has 48 gigabit users but only a heavily oversubscribed common uplink. What evidence should guide revision?
- Environmental hardware compliance
- Modular field-replaceable components
- Uplink capacity headroom
- Documented transceiver interoperability
Explanation
Correct Answer
C:Measured aggregate traffic and growth determine uplink sizing. Sizing uplinks for sustained peaks and future growth avoids avoidable oversubscription bottlenecks.
Incorrect Answers
A:Temperature, airflow and physical mounting suitability matter for closets and industrial sites. But this does not address the case requirement to reserve appropriate uplink throughput for actual loads.
B:Modular chassis can accept supported replacement power, fans or line cards without full platform replacement. But this does not address the case requirement to reserve appropriate uplink throughput for actual loads.
D:Validated optical modules and interface speeds prevent incompatible media assumptions. But this does not address the case requirement to reserve appropriate uplink throughput for actual loads.
Question 36
An installer connects redundant PSUs to the same power strip and calls the design feed-resilient. Which characteristic is still needed?
- Redundant PSUs on independent electrical feeds
- Modular field-replaceable components
- Environmental hardware compliance
- Uplink capacity headroom
Explanation
Correct Answer
A:Independent electrical paths matter in addition to module count. Multiple independently fed power supplies can tolerate a supply or feed failure on supported models.
Incorrect Answers
B:Modular chassis can accept supported replacement power, fans or line cards without full platform replacement. But this does not address the case requirement to eliminate the common power-strip failure.
C:Temperature, airflow and physical mounting suitability matter for closets and industrial sites. But this does not address the case requirement to eliminate the common power-strip failure.
D:Sizing uplinks for sustained peaks and future growth avoids avoidable oversubscription bottlenecks. But this does not address the case requirement to eliminate the common power-strip failure.
Question 37
A closet has 24 APs at 22W and 12 phones at 9W; the project excludes safety reserve. What design item must accommodate the combined draw?
- Multi-gigabit access capability
- Per-port PoE class support
- Access-port density planning
- PoE budget calculation
Explanation
Correct Answer
D:The planned concurrent demand is 636W before any reserve. Total switch PoE capacity must accommodate the simultaneous power demand and reserve of attached powered devices.
Incorrect Answers
A:Fast AP uplinks may require 2.5G or 5G access port support rather than basic gigabit ports. But this does not address the case requirement to ensure sufficient switch-level power budget.
B:The physical port must support the required PoE mode and negotiated device draw. But this does not address the case requirement to ensure sufficient switch-level power budget.
C:Port count must include expected endpoints, growth and spare ports per closet. But this does not address the case requirement to ensure sufficient switch-level power budget.
Question 38
One camera requires a higher PoE class than its physical switch port supports, although overall wattage is available. What factor blocks it?
- Access-port density planning
- Multi-gigabit access capability
- Per-port PoE class support
- PoE budget calculation
Explanation
Correct Answer
C:A budget total does not override per-port power capabilities. The physical port must support the required PoE mode and negotiated device draw.
Incorrect Answers
A:Port count must include expected endpoints, growth and spare ports per closet. But this does not address the case requirement to supply the required PoE classification at the port.
B:Fast AP uplinks may require 2.5G or 5G access port support rather than basic gigabit ports. But this does not address the case requirement to supply the required PoE classification at the port.
D:Total switch PoE capacity must accommodate the simultaneous power demand and reserve of attached powered devices. But this does not address the case requirement to supply the required PoE classification at the port.
Question 39
An AP negotiates only 1G on a desk-edge port despite a 2.5G-capable radio design. Which port feature must be verified?
- Multi-gigabit access capability
- Per-port PoE class support
- Protected voice and data segmentation
- PoE budget calculation
Explanation
Correct Answer
A:Multi-gigabit capability is a port attribute independent of AP throughput. Fast AP uplinks may require 2.5G or 5G access port support rather than basic gigabit ports.
Incorrect Answers
B:The physical port must support the required PoE mode and negotiated device draw. But this does not address the case requirement to support the AP's faster wired Ethernet speed.
C:Phones and computers may need appropriate VLAN assignment and traffic treatment. But this does not address the case requirement to support the AP's faster wired Ethernet speed.
D:Total switch PoE capacity must accommodate the simultaneous power demand and reserve of attached powered devices. But this does not address the case requirement to support the AP's faster wired Ethernet speed.
Question 40
A floor sends growing video traffic through two compatible uplinks and needs a managed bundle. Which feature should be evaluated?
- Multi-gigabit access capability
- PoE budget calculation
- Link aggregation for uplinks
- Access-port density planning
Explanation
Correct Answer
C:LACP offers a logical uplink bundle when peers agree. Aggregating compatible uplinks can increase aggregate bandwidth and improve member resilience.
Incorrect Answers
A:Fast AP uplinks may require 2.5G or 5G access port support rather than basic gigabit ports. But this does not address the case requirement to aggregate parallel supported uplink connections.
B:Total switch PoE capacity must accommodate the simultaneous power demand and reserve of attached powered devices. But this does not address the case requirement to aggregate parallel supported uplink connections.
D:Port count must include expected endpoints, growth and spare ports per closet. But this does not address the case requirement to aggregate parallel supported uplink connections.
HPE Network Switching Professional (HPE7-A08) Practice Tests