Practice Quiz

CWNA Wireless Network Administrator

Category - CWNA

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Which of the following is an advantage of the 5 GHz, 802.11a equipment over a 2.4 GHz, 802.11b equipment?
  1. 5 GHz UNII band is wider than the 2.4 GHz ISM band.
  2. 802.11a equipment is less expensive than 802.11b.
  3. 802.11a equipment is backwards compatible with 802.11g equipment.
  4. 5 GHz UNII bands allows for more non-overlapping channels than the 2.4 GHz ISM band.
Explanation
Answer - D - The 5 GHz UNII bands allows for more non-overlapping channels than the 2.4 GHz ISM band.

Key Takeaway: The lower portion of the 5 GHz UNII band and the 2.4 GHz ISM band are the same width of about 100 MHz. The UNII bands allow a larger useable portion than the 2.4 GHz ISM band. Hence, it yields a maximum of 4 non-overlapping DSSS channels.
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