300-425 · Question #331
A customer is planning to replace older access points with Cisco 4800 Series Access Points. Unaware of the infrastructure requirements, the client has an engineer investigate the inline power requirem
The Cisco 4800 Series AP requires IEEE 802.3bt (PoE++) to meet its full inline power demands across all radios and features.
Question
A customer is planning to replace older access points with Cisco 4800 Series Access Points. Unaware of the infrastructure requirements, the client has an engineer investigate the inline power requirement. Which IEEE 802.3 standard complies with the Cisco 4800 Series Access Points?
Options
- A802.3bt
- B802.3at
- C802.3af
- D802.3ac
Why each option
The Cisco 4800 Series AP requires IEEE 802.3bt (PoE++) to meet its full inline power demands across all radios and features.
IEEE 802.3at (PoE+) delivers a maximum of 30W, which is insufficient to support the full operational power requirements of the Cisco 4800 Series AP.
IEEE 802.3af (standard PoE) supplies only up to 15.4W, far below the power level needed for the Cisco 4800 Series AP.
IEEE 802.3ac is an Ethernet framing standard related to VLAN tagging, not a Power over Ethernet standard, and has no relevance to inline power delivery.
Concept tested: PoE standard compliance for Cisco 4800 Series AP
Source: https://www.cisco.com/c/en/us/products/collateral/wireless/aironet-4800-series/datasheet-c78-740433.html
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