Which of the following pair of acronym and its expansion is incorrectly matched?

Correct option is B

• Option A (GPS - Global Positioning System) is correct: GPS is a satellite-based navigation system used for determining location, time, and speed.
• Option B (GSM - Global System for Management) is incorrect: GSM stands for Global System for Mobile Communications, which is a standard for mobile networks enabling voice and data communication.
• Option C (SIM - Subscriber Identity Module) is correct: SIM is a smart card used in mobile devices to store user information, such as the International Mobile Subscriber Identity (IMSI).
• Option D (WiMAX - Worldwide Interoperability for Microwave Access) is correct: WiMAX is a wireless communication standard designed to provide high-speed broadband access over long distances.

1. Information Booster:
   ● GPS: Developed by the U.S. Department of Defense and used for navigation, tracking, and mapping.
   ● GSM: One of the most widely used mobile communication standards, introduced in 1991.
   ● SIM: Enables secure user authentication and storage of contact details and messages.
   ● WiMAX: Provides wireless broadband for last-mile connectivity and is an alternative to wired broadband services.
   ● GSM and CDMA are two competing standards in the mobile communication industry.