Which technology enables voice calls over Internet networks?
Which technology enables voice calls over Internet networks?
Answer: A. VoIP — ConceptInternet applications use protocols designed for different kinds of communication. Real-time speech requires audio to be digitized, divided into…
- A.
VoIP
- B.
DNS
- C.
FTP
- D.
HTTP
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Correct answer: A
Concept
Internet applications use protocols designed for different kinds of communication. Real-time speech requires audio to be digitized, divided into packets, and transported with session-signaling and media-delivery protocols.
A protocol intended mainly for name resolution, file transfer, or web request-response traffic serves a different application role.
Application
Voice over Internet Protocol (VoIP) converts speech into digital media packets and carries them across Internet Protocol networks. Therefore, VoIP is the technology described in the question.
Contrast
DNS resolves domain names and related resource records.
FTP transfers files using separate control and data connections.
HTTP carries request-response exchanges for web resources.
Result
The required technology is VoIP (Voice over Internet Protocol).