What technology enables making telephone calls over the Internet?

What technology enables making telephone calls over the Internet?

• A. Voice over Internet Protocol (VoIP)
• B. Digital Subscriber Line (DSL)
• C. Public Switched Telephone Network (PSTN)
• D. Bluetooth

Answer: (A)

VoIP enables making telephone calls over the Internet because it converts your voice into digital data packets and transmits them over IP networks instead of traditional phone lines. This packet‑switched approach lets voice share the same network used for data, often reducing costs and enabling features like conferencing and mobility. The other options don’t fit the concept: DSL is just a way to access the Internet over copper lines, not a calling method; the Public Switched Telephone Network is the old circuit‑switched phone system for traditional calls; Bluetooth is a short‑range wireless tech for nearby devices, not Internet-based calling.

VoIP enables making telephone calls over the Internet because it converts your voice into digital data packets and transmits them over IP networks instead of traditional phone lines. This packet‑switched approach lets voice share the same network used for data, often reducing costs and enabling features like conferencing and mobility. The other options don’t fit the concept: DSL is just a way to access the Internet over copper lines, not a calling method; the Public Switched Telephone Network is the old circuit‑switched phone system for traditional calls; Bluetooth is a short‑range wireless tech for nearby devices, not Internet-based calling.