With reference to the mobile telephony, the USSD technology is increasingly being adopted in recent times for various services. How the USSD is different from SMS ?

1. While USSD maintains a continuous session so that users receive immediate response, SMS service can’t involve a continuous session
2. While per message length in USSD is 182 alphanumeric characters, it 160 alphanumeric characters for SMS
Choose the correct option from the codes given below:

[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 nor 2

1 thought on “With reference to the mobile telephony, the USSD technology is increasingly being adopted in recent times for various services. How the USSD is different from SMS ?”

  1. C [ Both 1 & 2]
    Notes:
    Unstructured Supplementary Service Data is a type of communications protocol which is used by GSM cellular telephones to set up communication with the mobile network operator’s computers. It maintains a continuous session which enables the users receive immediate response. Short message service uses standardized communication protocols which enable user to exchange short text messages through cell phones. It is of a single instance type and can’t involve a continuous session. While per message length (7 bit character) in USSD is 182 alphanumeric characters , it is 160 alphanumeric characters for SMS.

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