Question

Nisha is using an Android app to make a voice call over the internet to her friend in another country. Which protocol is being used in this case?

• A. Chat
• B. VoIP
• C. Email
• D. TV

Hint:

A voice call carried over the internet as data packets uses Voice over Internet Protocol. Match this with the options.

Answer 1

The Correct Option is B

Step 1: Understand what the situation describes:
Nisha makes a voice call to her friend in another country. The call does not use a normal phone line. It travels over the internet through an app.
We need the protocol that carries voice as data packets over the internet.

Step 2: Recall the rule:
VoIP stands for Voice over Internet Protocol. It turns the voice into small digital packets and sends them over an IP network.
Apps such as WhatsApp calls, Skype and Google Meet use this idea.

Step 3: Check option (A) Chat:
Chat means sending text messages in real time. It is not meant for carrying a live voice call. So (A) is wrong.

Step 4: Check option (B) VoIP:
A voice call over the internet through an app is exactly what VoIP does. So (B) is correct.

Step 5: Check options (C) and (D):
Email sends stored messages and files. It does not give a live two-way talk. So (C) is wrong.
TV is a broadcast medium and is not a protocol for calls. So (D) is wrong.

Final Answer:
The protocol used for a voice call over the internet is VoIP. This is option (B).