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21 Cards in this Set
- Front
- Back
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With 10 Mbps and 100 Mbps Ethernet, how many twisted pairs are used for transmitting and receiving data? |
two pairs are used for transmitting and receiving data. two are unused. |
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This draws power from the power-sourcing equipment. |
Powered Device (PD) |
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Power devices must be capable of accepting how many volts? |
57 |
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The power device must reply to the power-sourcing equipment with what that will notify the power-sourcing equipment whether it is in a state to accept power. |
detection signature |
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With this the power device can optionally provide what that lets the power-sourcing equipment know how much power the device will need? |
classification signature |
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What is the maximum draw of power in an 802.3af compliant power device? |
12.95W |
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Power-sourcing equipment provides power to the power device. The power supplied is at a nominal ____ volts? |
48 volts (44 to 57 volts) |
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What is the maximum draw of power to any powered device? |
25.5W |
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What provides power and Ethernet data signals from the same device? |
Endpoint Power-Sourcing Equipment |
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What method does power-sourcing equipment place power on the data pair of the cable? |
Alternative A |
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What method was designed to provide power on the spare unused wires in a 10BaseT/100BaseTX cable? |
Alternative B |
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This acts as a pass through device, adding power to an Ethernet segment. |
Midspan power-sourcing equipment. |
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Power-sourcing equipment must have what in order to carry the current to the powered device? |
medium dependent interface (MDI) |
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What is the maximum power a 110 volt power supply is cable of providing? |
3300W |
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The 802.3-2005 version of the PoE standard defines PoE in what clause? |
33 |
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The standard as amended defines which PoE device? |
PD PSE |
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Which PD classification is reserved for future use? |
4 |
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What is the maximum mA measured electric current that a class 3 PD can use? |
30 |
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What types of devices can provide power to a PD within a WLAN? |
Midspan Endpoint |
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If a device is in a state that will accept power, it may provide what? |
A classification signal
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What two classes of PD use the same minimum power from the PSE? |
0 and 3 |
