Southwest Airlines Professional Communications Certification Practice Exam

What technology is commonly used for internet-based phone calls?

1. VoIP (Voice over Internet Protocol)

2. Fiber optics

3. Landline telecommunication

4. Cable connections

The correct answer is: VoIP (Voice over Internet Protocol)

VoIP, which stands for Voice over Internet Protocol, is the technology that enables internet-based phone calls by converting voice signals into digital data packets that can be transmitted over the internet. This method allows users to make phone calls using a broadband internet connection rather than traditional telephone lines. VoIP has become increasingly popular due to its cost-effectiveness and the additional functionalities it can offer, such as video calls and the ability to integrate with other internet services. Fiber optics, while a form of data transmission that can support high-speed internet, does not specifically refer to the technology that enables voice calls. Rather, it is a medium through which data, including VoIP, can be transmitted. Landline telecommunication refers to traditional phone service using physical wires, which is distinct from the internet-based services that VoIP represents. Cable connections can provide internet service that VoIP can utilize, but they are not synonymous with the process of making internet-based calls themselves. Therefore, VoIP is the precise technology for internet-based phone communications.