Which of the following technologies belongs to wireless metropolitan area network?

Question

Options

• A2G/3G
• BWLAN
• CBluetooth
• DWiMAX

• A
  5% (1)
• B
  74% (14)
• C
  16% (3)
• D
  5% (1)

Explanation

There appears to be an error in the provided answer key. Option B (WLAN) is not correct for this question - WLAN stands for Wireless Local Area Network (Wi-Fi, IEEE 802.11), which covers local areas like offices or campuses, not metropolitan areas.

The correct answer is D. WiMAX (Worldwide Interoperability for Microwave Access, IEEE 802.16) is the standard technology for wireless metropolitan area networks (WMANs), designed to deliver broadband wireless access over distances of several kilometers across a city or region.

The distractors break down as follows: A (2G/3G) are cellular technologies that belong to wireless wide area networks (WWANs), covering national or global distances. B (WLAN/Wi-Fi) belongs to wireless local area networks, covering small areas like a building or campus. C (Bluetooth) belongs to wireless personal area networks (WPANs), covering very short ranges of roughly 10 meters.

Memory tip: Match the network scale to the technology by pairing acronyms with scope - PAN (Personal/Bluetooth), LAN (Local/Wi-Fi), MAN (Metropolitan/WiMAX), WAN (Wide/3G/4G). WiMAX even sounds like it has "max" range relative to local technologies, placing it at the metropolitan scale.

You may want to verify this answer key with your instructor or source material, as the marked answer of B conflicts with standard networking taxonomy.

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