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Consider the following statements with reference to the Unstructured Supplementary Service Data protocol:
1. It is a communications protocol used in the Global System for Mobile Communications (GSM) networks.
2. It is an instant messaging service where messages received through this are stored on the subscriber’s device.
Which of the statements given above is/are correct?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'A'. Can you explain this answer?
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Consider the following statements with reference to the Unstructured S...
The Department of Telecom has asked telecom operators to deactivate USSD-based call forwarding with effect from April 15 and move to alternative methods to re-activate it.
- It is a communications protocol used in the Global System for Mobile Communications (GSM) networks for sending short text messages.
- It is an instant messaging service and messages are not stored on the operator side or on the subscriber’s device.
- USSD format: It generally exist as one of two types, depending on their origin:
- A USSD Pull is an outgoing request from the user in the form of an MMI command.
- A USSD Push is a message from the operator that is displayed on the user’s screen.
- The user can send the operator a request in the form of a USSD command. Commands consist of the * and # characters and numeric codes.
- The chain begins with * or # (which can occur more than once, separating commands from subcommands) and usually ends with #.
- The maximum length of a USSD message is 182 characters, but in practice even the longest requests rarely exceed 20.
- Mobile subscribers use the USSD service just by dialling any active code on their phone screens.
- It is used to display balance deduction in mobile phones where a message pops-up on the device screen after a call or outgoing SMS.
- It is also used for checking IMEI numbers of mobiles.
Hence only statement 1 is correct.
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Consider the following statements with reference to the Unstructured S...
Explanation:
Unstructured Supplementary Service Data (USSD) Protocol:
USSD is a protocol used in GSM networks to send text messages between a mobile phone and an application program.
Statement 1:
- Correct
- USSD is indeed a communications protocol used in GSM networks. It allows mobile phone users to interact with various value-added services provided by their network operator.
Statement 2:
- Incorrect
- USSD is not an instant messaging service where messages are stored on the subscriber's device. It is typically used for services like balance inquiries, mobile banking, prepaid recharge, etc., and the messages are not stored on the device.
Therefore, only statement 1 is correct.
Unstructured Supplementary Service Data (USSD) Protocol:
USSD is a protocol used in GSM networks to send text messages between a mobile phone and an application program.
Statement 1:
- Correct
- USSD is indeed a communications protocol used in GSM networks. It allows mobile phone users to interact with various value-added services provided by their network operator.
Statement 2:
- Incorrect
- USSD is not an instant messaging service where messages are stored on the subscriber's device. It is typically used for services like balance inquiries, mobile banking, prepaid recharge, etc., and the messages are not stored on the device.
Therefore, only statement 1 is correct.
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Consider the following statements with reference to the Unstructured Supplementary Service Data protocol:1. It is a communications protocol used in the Global System for Mobile Communications (GSM) networks.2. It is an instant messaging service where messages received through this are stored on the subscriber’s device.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'A'. Can you explain this answer?
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