Free JK0-023 Exam Braindumps
CompTIA Network+ certification Questions 251–255 (page: 52)

Updated On: 10-Feb-2026

Which of the following can operate on BOTH the 2.4GHz and 5.8GHz frequencies?

  1. 802.11a
  2. 802.11b
  3. 802.11g
  4. 802.11n

Answer(s): D



Which of the following WAN technologies utilizes an optical SONET carrier and has a maximum bandwidth of 155.54Mbps?

  1. DS3
  2. E3
  3. OC3
  4. T3

Answer(s): C



Ann, a technician, is installing network cables for an office building. Some of the cables are not showing active on the switch even when moved to different ports. Which of the following is MOST likely the cause?

  1. Port speed mismatch
  2. Faulty F-connectors
  3. Bad wiring
  4. Bad switch

Answer(s): C



Which of the following uses a ring topology?

  1. DSL
  2. Ethernet
  3. DOCSIS
  4. SONET

Answer(s): D



Which of the following allows 802.11n higher transfer speeds than the previous wireless standards?

  1. Dual frequency
  2. Enhanced encryption
  3. MIMO technology
  4. Backwards compatibility

Answer(s): C



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