Consider the following :

1. Aarogya Setu

2. CoWIN

3. DigiLocker

4. DIKSHA

Which of the above are built on top of open-source digital platforms?

With reference to Web 3·0, consider the following statements :

1. Web 3·0 technology enables people to control their own data.

2. In Web 3·0 world, there can be blockchain based social networks.

3. Web 3·0 is operated by users collectively rather than a corporation.

Which of the statements given above are correct ?

With reference to "Software as a Service (SaaS)", consider the following statements:

1. SaaS buyers can customise the user interface and can change data fields.

2. SaaS users can access their data through their mobile devices.

3. Outlook, Hotmail and Yahoo! Mail are forms of SaaS.

Which of the statements given above are correct?

Consider the following communication technologies :

1. Closed-circuit Television

2. Radio Frequency Identification

3. Wireless Local Area Network

Which of the above are considered Short-Range devices/technologies ?