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HP HPE7-A08 Practice Test 24

Question 230

A high-density AP gets sufficient wattage but its upstream throughput is limited to 1G. What extra port feature matters?

  1. Powered device cable qualification
  2. Multi-gigabit transceiver or port choice
  3. Available PoE system budget
  4. Per-port power class negotiation

Explanation

Correct Answer

B:

PoE power does not imply multi-gigabit data capability. AP or server links require supported negotiated Ethernet speed rather than just adequate PoE power.

Incorrect Answers

A:

Copper quality and length affect Ethernet power and data delivery. But this does not address the case requirement to select the necessary wired link speed.

C:

Total simultaneous draw must remain within the switch's supported deliverable power. But this does not address the case requirement to select the necessary wired link speed.

D:

An individual interface must support the endpoint's IEEE PoE classification. But this does not address the case requirement to select the necessary wired link speed.

Question 231

A freshly installed phone is dark on a PoE-enabled port with no observable draw. What state should be checked?

  1. Powered device cable qualification
  2. Available PoE system budget
  3. Redundant PSU power behavior
  4. PoE and link operational verification

Explanation

Correct Answer

D:

Power negotiation and interface status reveal whether power is delivered. Observed power status, LLDP information and port counters prove correct service.

Incorrect Answers

A:

Copper quality and length affect Ethernet power and data delivery. But this does not address the case requirement to confirm the physical port grants the expected power.

B:

Total simultaneous draw must remain within the switch's supported deliverable power. But this does not address the case requirement to confirm the physical port grants the expected power.

C:

Power supply failure can affect available PoE headroom unless redundancy is designed appropriately. But this does not address the case requirement to confirm the physical port grants the expected power.

Question 232

An engineer totals the rated PSU capacity instead of the actual PoE allocation. What figure should be recalculated?

  1. Redundant PSU power behavior
  2. Available PoE system budget
  3. Per-port power class negotiation
  4. Multi-gigabit transceiver or port choice

Explanation

Correct Answer

B:

Deliverable PoE budget is the real endpoint limit. Total simultaneous draw must remain within the switch's supported deliverable power.

Incorrect Answers

A:

Power supply failure can affect available PoE headroom unless redundancy is designed appropriately. But this does not address the case requirement to evaluate available powered-device watts.

C:

An individual interface must support the endpoint's IEEE PoE classification. But this does not address the case requirement to evaluate available powered-device watts.

D:

AP or server links require supported negotiated Ethernet speed rather than just adequate PoE power. But this does not address the case requirement to evaluate available powered-device watts.

Question 233

Only one AP fails at a port due to unsupported power class while other loads are normal. Which limit is implicated?

  1. Per-port power class negotiation
  2. PoE and link operational verification
  3. Redundant PSU power behavior
  4. Available PoE system budget

Explanation

Correct Answer

A:

Per-port negotiation can block a specific higher-power PD. An individual interface must support the endpoint's IEEE PoE classification.

Incorrect Answers

B:

Observed power status, LLDP information and port counters prove correct service. But this does not address the case requirement to validate interface IEEE PoE capability.

C:

Power supply failure can affect available PoE headroom unless redundancy is designed appropriately. But this does not address the case requirement to validate interface IEEE PoE capability.

D:

Total simultaneous draw must remain within the switch's supported deliverable power. But this does not address the case requirement to validate interface IEEE PoE capability.

Question 234

A switch has enough total PoE wattage with both power supplies, but several cameras lose power whenever one PSU fails. What specific high-availability behavior needs redesign?

  1. Redundant PSU power behavior
  2. PoE and link operational verification
  3. Multi-gigabit transceiver or port choice
  4. Available PoE system budget

Explanation

Correct Answer

A:

Power redundancy must preserve sufficient capacity when one PSU is unavailable. Power supply failure can affect available PoE headroom unless redundancy is designed appropriately.

Incorrect Answers

B:

Observed power status, LLDP information and port counters prove correct service. But this does not address the case requirement to preserve critical PoE under a single-supply fault.

C:

AP or server links require supported negotiated Ethernet speed rather than just adequate PoE power. But this does not address the case requirement to preserve critical PoE under a single-supply fault.

D:

Total simultaneous draw must remain within the switch's supported deliverable power. But this does not address the case requirement to preserve critical PoE under a single-supply fault.

Question 235

A technician inserts an unsupported transceiver format into a core port. What component check prevents this?

  1. Breakout interface compatibility
  2. Approved optic part and form factor
  3. Wavelength and transceiver reach
  4. Link aggregation member consistency

Explanation

Correct Answer

B:

Use the supported transceiver and platform compatibility list. Switch and cable ports need supported module form factors and compatible software.

Incorrect Answers

A:

High-speed port breakout requires supported hardware, firmware and cable type. But this does not address the case requirement to select an optic the interface actually supports.

C:

Two ends must agree on optical standard and rated distance. But this does not address the case requirement to select an optic the interface actually supports.

D:

LAG members must agree on speed and Layer 2 parameters to participate correctly. But this does not address the case requirement to select an optic the interface actually supports.

Question 236

An 850nm multi-mode optical module faces a long-reach single-mode peer. What should be reconciled?

  1. Cabling path diversity
  2. Approved optic part and form factor
  3. Link aggregation member consistency
  4. Wavelength and transceiver reach

Explanation

Correct Answer

D:

Wavelength, medium and reach must match between endpoints. Two ends must agree on optical standard and rated distance.

Incorrect Answers

A:

Redundant links should avoid a shared failure point where feasible. But this does not address the case requirement to establish a compatible fiber signaling standard.

B:

Switch and cable ports need supported module form factors and compatible software. But this does not address the case requirement to establish a compatible fiber signaling standard.

C:

LAG members must agree on speed and Layer 2 parameters to participate correctly. But this does not address the case requirement to establish a compatible fiber signaling standard.

Question 237

An optical interface logs increasing errors and receive light is far below specification. What diagnosis should start first?

  1. Cabling path diversity
  2. Link aggregation member consistency
  3. Breakout interface compatibility
  4. Optical receive-power diagnostics

Explanation

Correct Answer

D:

Power measurements and loss budget narrow the physical cause. Low receive power or errors indicate the need for physical loss assessment.

Incorrect Answers

A:

Redundant links should avoid a shared failure point where feasible. But this does not address the case requirement to resolve attenuation before routing analysis.

B:

LAG members must agree on speed and Layer 2 parameters to participate correctly. But this does not address the case requirement to resolve attenuation before routing analysis.

C:

High-speed port breakout requires supported hardware, firmware and cable type. But this does not address the case requirement to resolve attenuation before routing analysis.

Question 238

A 100G switch port will be split into four 25G server links but model support is unverified. What matters?

  1. Wavelength and transceiver reach
  2. Approved optic part and form factor
  3. Breakout interface compatibility
  4. Link aggregation member consistency

Explanation

Correct Answer

C:

Breakout capabilities vary by port, platform, and software. High-speed port breakout requires supported hardware, firmware and cable type.

Incorrect Answers

A:

Two ends must agree on optical standard and rated distance. But this does not address the case requirement to validate split-port support before cabling.

B:

Switch and cable ports need supported module form factors and compatible software. But this does not address the case requirement to validate split-port support before cabling.

D:

LAG members must agree on speed and Layer 2 parameters to participate correctly. But this does not address the case requirement to validate split-port support before cabling.

Question 239

An LACP aggregate has one member at a different line speed and the member is suspended. What constraint is violated?

  1. Link aggregation member consistency
  2. Cabling path diversity
  3. Breakout interface compatibility
  4. Wavelength and transceiver reach

Explanation

Correct Answer

A:

Aggregation members require compatible operating attributes. LAG members must agree on speed and Layer 2 parameters to participate correctly.

Incorrect Answers

B:

Redundant links should avoid a shared failure point where feasible. But this does not address the case requirement to align link bundle member characteristics.

C:

High-speed port breakout requires supported hardware, firmware and cable type. But this does not address the case requirement to align link bundle member characteristics.

D:

Two ends must agree on optical standard and rated distance. But this does not address the case requirement to align link bundle member characteristics.

Question 240

Two redundant core fibers share a duct vulnerable to one excavation. What design improvement reduces risk?

  1. Cabling path diversity
  2. Wavelength and transceiver reach
  3. Approved optic part and form factor
  4. Link aggregation member consistency

Explanation

Correct Answer

A:

Physical path diversity avoids one cut taking both links down. Redundant links should avoid a shared failure point where feasible.

Incorrect Answers

B:

Two ends must agree on optical standard and rated distance. But this does not address the case requirement to make uplink failure domains independent.

C:

Switch and cable ports need supported module form factors and compatible software. But this does not address the case requirement to make uplink failure domains independent.

D:

LAG members must agree on speed and Layer 2 parameters to participate correctly. But this does not address the case requirement to make uplink failure domains independent.

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