WiMAX is a modern telecommunication technology that provides high-speed wireless broadband access over long distances. The full form of WiMAX is Worldwide Inter-operability for Microwave Access.
Step 1 — Expansion of the term:
• “Worldwide” → Indicates its global standard and applicability.
• “Inter-operability” → Refers to the ability of different devices and systems to work together seamlessly across vendors.
• “Microwave Access” → Highlights that the technology uses microwave frequencies to transmit data wirelessly.
Step 2 — Technical background:
• WiMAX is based on the IEEE 802.16 family of standards.
• It was developed to deliver last-mile broadband access as an alternative to cable and DSL internet.
• It supports both fixed and mobile broadband connectivity.
Step 3 — Key features:
• Provides high-speed data rates over larger coverage areas compared to Wi-Fi.
• Can cover a range of up to 30–40 km for fixed stations and about 5–15 km for mobile stations.
• Suitable for providing broadband in rural and semi-urban areas where wired infrastructure is limited.
• Supports voice, video, and data transmission over IP networks.
Step 4 — Applications:
• Wireless broadband internet access in underserved areas.
• Backhaul for Wi-Fi hotspots and cellular networks.
• Alternative to wired broadband solutions like DSL and cable.
Final Answer:
WiMAX stands for Worldwide Inter-operability for Microwave Access. This corresponds to Option (D).