[Data Communication Network Basics] WLAN is a wireless local area network constructed using wireless technologies, including Wi-Fi, infrared, Bluetooth, and ZigBee.

In wireless communications classification, wireless networks are divided by coverage range into WPAN, WLAN, WMAN, and WWAN. WLAN (Wireless Local Area Network) specifically refers to networks based on IEEE 802.11 standards (Wi-Fi) and historical infrared (IR) local area technologies. Bluetooth (IEEE 802.15.1) and ZigBee (IEEE 802.15.4) belong to WPAN (Wireless Personal Area Network) technologies, not WLAN.

A. True: Is incorrect because it misclassifies WPAN technologies (Bluetooth, ZigBee) under the definition of WLAN.

Huawei HCIA-Datacom Learning Guide: Data Communication Network Basics, Chapter 12 "WLAN Overview and Basic Principles", Section 12.1 "Wireless Network Classification (WPAN vs. WLAN)", Huawei University.

IEEE Standards Association: IEEE 802.11 Wireless LAN Medium Access Control and Physical Layer Specifications vs. IEEE 802.15 Working Group for WPAN.