210-065 · Question #326
Cisco inline power was replaced by which IEEE standard?
The correct answer is B. 802.3af. Cisco developed a proprietary inline power solution before IEEE standardized Power over Ethernet. The 802.3af standard replaced Cisco's proprietary implementation.
Question
Cisco inline power was replaced by which IEEE standard?
Options
- A802.3at
- B802.3af
- C802.11n
- D802.11ac
How the community answered
(40 responses)- A8% (3)
- B88% (35)
- C3% (1)
- D3% (1)
Why each option
Cisco developed a proprietary inline power solution before IEEE standardized Power over Ethernet. The 802.3af standard replaced Cisco's proprietary implementation.
802.3at (PoE+) is a later amendment that increased power delivery to 30W and was built on top of 802.3af, not the original replacement for Cisco inline power.
IEEE 802.3af was the first IEEE standard for Power over Ethernet, delivering up to 15.4W per port, and it was specifically created to replace Cisco's proprietary Cisco Inline Power (CIP) system. It standardized the detection, classification, and power delivery mechanisms that Cisco had implemented in its own way. This made PoE interoperable across vendors.
802.11n is a wireless LAN throughput standard defining MIMO and speeds up to 600 Mbps, and has no relation to power delivery over Ethernet.
802.11ac is a wireless LAN standard for 5 GHz band gigabit Wi-Fi and is entirely unrelated to inline power or PoE.
Concept tested: IEEE 802.3af replacing Cisco proprietary inline power
Source: https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-3750-series-switches/prod_bulletin0900aecd80272492.html
Topics
Community Discussion
No community discussion yet for this question.