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PW0-100 Wireless LAN Administration, Certified Wireless Network Administrator (CWNA) Questions 221–225 (page: 46)

Updated On: 10-Feb-2026

During Point Coordination Function what Interframe Space does the access point use?

  1. PIFS
  2. SIFS
  3. DIFS
  4. EIFS

Answer(s): A



With reference to multipath interference, what phase identifies the time between when the first signal is received and the last echoed signal is received?

  1. Fade Length
  2. Time Delay
  3. Delay Spread
  4. Echo Spread

Answer(s): C



As specified by the FCC, what is the minimum hop rate for FHSS systems in the 2.4 GHz ISM band?

  1. 1 hop every 0.2 seconds
  2. 1 hop every 0.4 seconds
  3. 1 hop every 0.8 seconds
  4. 1 hop every 1.0 seconds

Answer(s): B

Explanation:

As mentioned in the study guide, according to the rules specified by the FCC, the maximum dwell time that can be set for FHSS systems is 400 ms. Thus after, the frequency must be changed. Thus, the answer should be B (0.4).



What organization sponsors certification for wireless LAN hardware interoperability?

  1. WLANA
  2. OpenAir
  3. Wi-Fi Alliance
  4. IEEE

Answer(s): C



In a 2.4 GHz FHSS system, how wide is "all-band" interference?

  1. 1.0 MHz
  2. 2.0 MHz
  3. 22.0 MHz
  4. 83.5 MHz

Answer(s): D

Explanation:

All band interference is interference in the entire usable band which is 83.5 Mhz in this case. DSSS uses a 22 Mhz bandwidth



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