Free H12-311 Exam Braindumps (page: 11)

Page 10 of 75

In 1999, the IEEE 802.11a standard was developed. The standard specifies that the WLAN operating frequency band is 5.15 to 5.825 GHz, and the data transmission rate reaches 11 Mbps.

  1. True
  2. False

Answer(s): B



Unlike the 802.11a/b/g standard, the 802.11n protocol is a dual-band mode of operation (supporting two operating bands of 2.4 GHz and 5 GHz).

  1. True
  2. False

Answer(s): A



802.11b supports () channels in the United States, where one channel does not overlap?

  1. 14;3
  2. 11;3
  3. 11;6
  4. 14; 6

Answer(s): B



What is the maximum rate supported by the original 802.11 protocol?

  1. 1
  2. 2
  3. 5.5
  4. 11

Answer(s): B






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