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Zorluk: KolayTroubleshooting Wireless Connectivity and Signal Issues

A network administrator is troubleshooting an industrial sensor deployment on the 2.4 GHz spectrum experiencing heavy packet loss and poor signal quality. An RF audit reveals that surrounding access points are configured on channels 2, 4, and 9 using 40 MHz channel widths. Which of the following actions should the administrator take to resolve the wireless interference issues? (Select TWO.)

  1. Reassign access point radio frequencies to non-overlapping channels 1, 6, and 11Cevap
  2. Reduce the channel width configuration on the 2.4 GHz radios from 40 MHz to 20 MHzCevap
  3. C
    Increase radio transmit power to maximum levels on all access points
  4. D
    Migrate authentication from pre-shared key (PSK) to 802.1X enterprise authentication

Cevap

The administrator should reassign access point radio frequencies to non-overlapping channels 1, 6, and 11, and reduce the 2.4 GHz channel width configuration from 40 MHz to 20 MHz.
Reassigning 2.4 GHz radios to channels 1, 6, and 11 removes adjacent channel overlap, while lowering the channel width from 40 MHz to 20 MHz limits spectral footprint so channels do not bleed into neighboring frequencies.

Adım Adım Çözüm

1
Identify non-overlapping channel configuration requirements in the 2.4 GHz frequency band
Channels 2, 4, and 9 overlap with adjacent channels, creating severe radio frequency interference. Reassigning them to channels 1, 6, and 11 eliminates adjacent-channel interference.
In 802.11 2.4 GHz deployments, only channels 1, 6, and 11 provide sufficient spectrum separation without overlapping.
2
Analyze channel width settings for 2.4 GHz wireless networks
40 MHz channel bonding occupies 8 out of 11 available 2.4 GHz channels, making non-overlapping channel planning impossible. Reducing width to 20 MHz frees up spectrum.
Standard 20 MHz channels are essential in 2.4 GHz to maintain channel isolation and prevent co-channel/adjacent-channel degradation.

Anahtar Kavram

2.4 GHz Wireless Channel Planning and Channel Bonding Constraints
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