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    Question

    What is USSD in mobile industry?

    A United States Service Department Correct Answer Incorrect Answer
    B Unstructured Supplementary Service Data Correct Answer Incorrect Answer
    C Universal Source and System Data Correct Answer Incorrect Answer
    D Uniquely Structured Systematic Device Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Unstructured Supplementary Service Data (USSD), sometimes referred to as "Quick Codes" or "Feature codes", is a protocol used by GSM cellular telephones to communicate with the service provider's computers. USSD messages are up to 182 alphanumeric characters long. Unlike Short Message Service (SMS) messages, USSD messages create a real-time connection during a USSD session. The connection remains open, allowing a two-way exchange of a sequence of data. This makes USSD more responsive than services that use SMS.

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