300-425 · Question #103
An engineer performs a Layer 1 survey by using Metageek Chanatyzer only on the current operating channel. Which operating mode is configured for a Cisco CleanAir AP?
The correct answer is A. local. A Cisco CleanAir AP in local mode performs spectrum analysis exclusively on its assigned serving channel, matching the single-channel Chanalyzer survey described.
Question
An engineer performs a Layer 1 survey by using Metageek Chanatyzer only on the current operating channel. Which operating mode is configured for a Cisco CleanAir AP?
Options
- Alocal
- Bsniffer
- Cmonitor
- DSE-connect
How the community answered
(33 responses)- A73% (24)
- B3% (1)
- C15% (5)
- D9% (3)
Why each option
A Cisco CleanAir AP in local mode performs spectrum analysis exclusively on its assigned serving channel, matching the single-channel Chanalyzer survey described.
In local mode, a CleanAir-enabled AP simultaneously serves wireless clients and performs CleanAir interference detection confined to its assigned operating channel. Because the AP does not perform off-channel scanning for spectrum purposes, Chanalyzer receives Layer 1 spectrum data only for the channel the AP is currently serving, which is exactly the single-channel survey behavior described in the question.
Sniffer mode captures 802.11 frame data and forwards packets to a protocol analyzer such as Wireshark; it does not provide Layer 1 RF energy or spectrum data to Chanalyzer.
Monitor mode dedicates the AP to scanning all channels for rogue detection and wireless IDS functions, not to single-channel spectrum analysis on one serving channel.
SE-Connect mode connects the AP to an external spectrum analyzer like Chanalyzer for dedicated spectrum analysis, but in this mode the AP stops serving clients and is not restricted to a single current operating channel.
Concept tested: Cisco CleanAir AP local mode single-channel spectrum analysis
Source: https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-10/config-guide/b_cg810/cleanair.html
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