版主请进，不知道这道题为什么有争议

siumem

我看到题库中有说到这道题的答案有争议，我没有去看闫辉的视频，不知道他是如何讲的。但是我觉得这道题答案是C POE应该是明确的。我前几年在工作中就有碰到这个CASE，因为AP1250本来就和其他型号的AP不一样，需要Enhanced POE：

Powering the Aironet 1250 Series AccessPoint with 802.3af Power over Ethernet

The Aironet 1250Series Access Point with one RM1252 radio module installed requires 12.95W, which is within the 802.3af Power over Ethernet(PoE) standard. Any Cisco switchsupporting 802.3af may be used to power the Aironet 1250 Series Access Pointwith one RM1252 radio module installed. This is ideal for businesses that choseto only deploy on a single frequency (2.4 GHz or 5 GHz). A single radioprovides optimum performance with approximately 300 Mbps maximum PHY data rate.Customers who deploy dual-band, 802.11n radios and power the 1250 Series usingstandard 802.3af will have more reliable and predictable coverage than thatprovided by traditional 802.11a/g networks; however, operation will be limitedto a single transmitter per radio with maximum PHY data rates of 150 Mbpsinstead of 300 Mbps per radio. Customers with a significant investment in802.11 a/b/g client devices that have low-to-medium bandwidth needs buthigh-reliability requirements will benefit the most from this type ofdeployment scenario.

Powering theAironet 1250 Series Access Point with Cisco Enhanced PoE

Cisco Enhanced PoEwas designed for customers who want to install new PoE-enabled technologiesthat require greater than 15.4W per port to function at full capability, such as wireless technology based on theIEEE 802.11n standard. Cisco Enhanced PoE provides the full power requirementsfor dual-radio modules and eliminates the need to run an additional cablingdrop or insert a separate power injector. Support for Enhanced PoE is currentlyavailable on a variety of Cisco Catalyst® switching platforms. For more informationon Enhanced PoE, visit http://www.cisco.com/en/US/prod/switches/epoe.html.

不当之处，请指正。

siumem