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CWNP PW0-100 Exam (page: 12)
CWNP PW0-100 Wireless LAN Administration, Certified Wireless Network Administrator (CWNA)
Updated on: 31-Mar-2026

Viewing Page 12 of 77
PW0-100 PDF 477 Questions

The 802.11a standard specifies what number of non-overlapping channels across all 5 GHz UNII bands combined?

  1. 15
  2. 12
  3. 4
  4. 20

Answer(s): B

Explanation:

According to the study guide, each of the 3 bands in the 5 GHz UNII band (lower, middle, upper) contain 4 non-overlapping channels. The question ask the number of such channels "combined". That would be B (12)



HomeRF is more secure than 802.11b because?

  1. HomeRF uses a 32-bit IV.
  2. HomeRF uses the SWAP protocol.
  3. HomeRF uses an SSID.
  4. HomeRF uses a non-ISM band.

Answer(s): A

Explanation:

Certified Wireless Network Administrator Study Guide, page 164



Which of the following questions is important to ask BEFORE performing an RF site survey?

  1. What is the expected user density per access point?
  2. What is the budget for the wireless LAN installation?
  3. Is there an existing WLAN infrastructure in place?
  4. What manufacturer's equipment is preferred for this installation?

Answer(s): A,C

Explanation:

Certified Wireless Network Administrator Study Guide, page 311



In relation to the 802.11 series of standards, which of the following best describes Direct Sequence Spread Spectrum (DSSS)? Select two.

  1. DSSS is more sensitive to fixed-frequency RF noise in the 2.4GHz ISM band than FHSS.
  2. DSSS is more significantly affected by multipath from narrowband sources than FHSS.
  3. A DSSS access point can handle a larger number of simultaneous connections than a FHSS access point.
  4. DSSS has higher throughput in Point-to-Point links than FHSS.

Answer(s): A,B

Explanation:

service set identifier (SSID) is a unique, case sensitive, alphanumeric value from 2-
32 characters long used by wireless LANs as a network name. This naming handle is used for segmenting networks, as a rudimentary security measure, and in the process of joining a network. The SSID value is sent in beacons, probe requests, probe responses, and other types of frames. A client station must be configured for the correct SSID in order to join a network. The administrator configures the SSID (sometimes called the ESSID) in each access point.Some stations have the ability to use any SSID value instead of only one manually specified by the administrator. If clients are to roam seamlessly among a group of access points, the clients and all access points must be configured with matching SSIDs. The most important point about an SSID is that it must match EXACTLY between access points and clients.
There are two kinds of scanning: passive scanning and active scanning. In finding an access point, client stations follow a trail of breadcrumbs left by the access point. These breadcrumbs are called service set identifiers (SSID) and beacons. These tools serve as a means for a client station to find any and all access points.



Which if these will be the most susceptible to multipath
interference?

  1. 1 Mbps DSSS
  2. 5 Mbps FHSS
  3. 11 Mbps DSSS
  4. 1 Mbps FHSS

Answer(s): C

Explanation:

DSSS is the most susceptible to multipath interference, also as transmission rates frames are less resistant to corruption.
See http://www.wi-fiplanet.com/tutorials/article.php/1121691 For Explanation as to why DSSS is most susceptible.
See CWNA Official Study Guide, 3rd Edition, Page 389
For Explanation as to Dynamic Rate Selection



Which of the following are true of FHSS?

  1. FHSS is affected by RF interference to a lesser degree than DSSS.
  2. FHSS used the entire 2.4 GHz ISM band.
  3. FHSS uses frequency diversity to retransmit lost packets on different frequencies.
  4. FHSS is very susceptible to interference from Bluetooth systems.

Answer(s): A,B



After 8/31/00, which of the following are true of FHSS?

  1. Avoids multipath interference.
  2. Hops to different frequencies to avoid attenuation.
  3. Must use a minimum of 15 hops.
  4. Cannot use a hop pattern of more than 40 hops.

Answer(s): C



What is the maximum transmitter output allowed by the FCC for radio transmitters utilizing FHSS technology (>50 hopping channels) in any of the ISM bands?

  1. 4 Watts
  2. 30 dBm
  3. 100 mW
  4. 27 dBm
  5. 125 mW

Answer(s): E

Explanation:

According to the study guide, in pre-08/31/00 rules, the maximum tranmitter output was 1 watt. However, in post-08/31/00 rules, the transmitter output was reduced to 125 mW, for all systems utilizing fewer than 75 hops in a sequence. Since the question asks for output for >50 hops, then I presume the answer should be 125 mW.



Viewing Page 12 of 77



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