Maximizing RFID Tag Tracking Channels on 802.11b/g APs
Refer to the exhibit. An enterprise uses 802.11 b/g APs and must track the RFID tags within the network. How many channels must be used to maximize the optimization of the monitoring and tracking of the tags? - 
Community Votes
50% of anonymous learners picked answer B. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
While standard Wi-Fi deployment relies on three non-overlapping channels (1, 6, 11), the specific requirement for RFID tag location calculation allows scanning on up to four channels to optimize performance.
To maximize optimization for monitoring and tracking RFID tags on 802.11b/g access points, Cisco documentation specifies enabling tracking optimization on up to four channels within the 2.4-GHz band.
Most candidates select 3 because they apply general Wi-Fi channel planning rules (non-overlapping channels) rather than the specific feature capability for RFID tracking optimization.
Community Discussion (6 comments)
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Expert Analysis
Why the Answer Is Correct
According to Cisco's configuration guides for wireless controllers, specifically regarding location services and RFID tracking, you can enable tracking optimization on up to four channels within the 2.4-GHz band of an 802.11b/g access point radio. This feature allows the controller to scan only the channels on which tags are usually programmed to operate, thereby optimizing the monitoring and location calculation process.Why the Other Options Are Wrong
Option B (3) is a common distractor based on the standard number of non-overlapping channels in the 2.4 GHz band (1, 6, 11). While valid for minimizing interference in data networks, it does not represent the maximum optimization limit for the specific RFID tracking feature. Option A (1) and D (11) are incorrect as they either provide insufficient coverage or excessive interference respectively, failing to leverage the optimized scanning capability.Community Comment Notes
Several users pointed out that while 3 is the standard for non-overlapping Wi-Fi, the specific exam objective relates to the technical limit of the tracking optimization feature. As one commenter noted, "To optimize the monitoring and location calculation of RFID tags, you can enable tracking optimization on up to four channels." Another user confirmed this by citing the official Cisco documentation link provided in the comments.Official Reference
Exam Strategy
When dealing with location services or RFID tracking questions, always look for specific limits defined in the vendor's documentation for that feature, rather than applying general RF planning principles like non-overlapping channels.
Frequently Asked Questions
Why not use 3 non-overlapping channels for RFID?
Standard Wi-Fi uses 3 non-overlapping channels (1, 6, 11) to reduce interference. However, for RFID tracking optimization, Cisco allows scanning up to 4 channels to improve location calculation accuracy.
Does this apply to 5GHz bands too?
The specific constraint of 'up to four channels' applies to the 2.4-GHz band for 802.11b/g APs as described in the question context. Different rules may apply to 5GHz depending on the available wide channels.