The correct answer is D. HIPERLAN/2.
HIPERLAN/2 is a European WLAN standard that provides user data rate up to 54 Mbps. It is a wireless local area network (WLAN) standard that was developed by the European Telecommunications Standards Institute (ETSI). HIPERLAN/2 is based on the IEEE 802.11a standard, but it has been optimized for use in Europe.
HIPERLAN/2 uses the 5 GHz frequency band, which is less congested than the 2.4 GHz frequency band used by many other WLAN standards. This allows HIPERLAN/2 to achieve higher data rates.
HIPERLAN/2 is also a very robust standard. It can operate in a variety of environments, including indoor and outdoor environments. It is also resistant to interference from other wireless devices.
HIPERLAN/2 is a good choice for WLAN applications that require high data rates and good performance in a variety of environments. It is used in a variety of applications, including home networking, office networking, and public access networks.
The other options are incorrect.
- UNII is a United States Federal Communications Commission (FCC) designation for three unlicensed bands of spectrum in the 5 GHz frequency range. These bands are used for a variety of wireless applications, including WLANs.
- WISP is an acronym for Wireless Internet Service Provider. WISPs provide wireless Internet access to customers.
- MMAC is a Media Access Control (MAC) protocol that is used in some WLANs. MMAC is a contention-based protocol, which means that stations contend for access to the wireless medium.
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