12.1.7 Check Your Understanding – Introduction to Wireless Answers

1. Which of the following wireless networks typically uses lower powered transmitters for short ranges?

  • WPAN
  • WLAN
  • WMAN
  • WWAN

Explanation: WPANs use low powered transmitter over short ranges of usually 20 to 30 ft. (6 to 9 meters).

2. Which of the following wireless networks are specified in the IEEE 802.11 standards for the 2.4 GHz and 5 GHz radio frequencies?

  • WPAN
  • WLAN
  • WMAN
  • WWAN

Explanation: WLANs are based on the 802.11 standards and can cover up to the 300 ft. (100 meters).

3. Which of the following is an IEEE 802.15 WPAN standard that uses a device-pairing process to communicate?

  • Cellular
  • WiMAX
  • Wi-Fi
  • Bluetooth

Explanation: Bluetooth is an IEEE 802.15 WPAN standard that uses a device-pairing process to communicate.

4. Which 802.11 standards exclusively use the 5 GHz radio frequency? (Choose 2)

  • 802.11a
  • 802.11g
  • 802.11n
  • 802.11ac
  • 802.11ax

Explanation: Both 802.11a and 802.11ac exclusively use 5 GHz radio frequency.

5. Which standards organization is responsible for allocating radio frequencies?

  • IEEE
  • ITU-R
  • Wi-Fi Alliance

Explanation: The ITU-R standards organization is responsible for allocating radio frequencies.

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