L2 ICT U1 VoIP Flashcard

Front

VoIP

Back

Voice over Internet Protocol

Front

Which of the following is NOT a reason why VoIP has become popular?

• It allows video communication over the internet
• It is commonly used in business and day-to-day lives
• It uses public telephone networks
• It has become an important method of communication

Back

It uses public telephone networks

Front

What is the primary reason for not needing expensive microphones for VoIP?

Back

VoIP normally works at quite a low quality

Front

Why can you use a cheap webcam for VoIP?

Back

VoIP software transmits a compressed, relatively low-quality image

Front

What is the main type of software used for real-time online voice and video conversation?

Back

VoIP software like Skype and FaceTime

Front

What is the purpose of a CODEC in VoIP and web conferencing software applications?

Back

To compress and decompress audio and video for transmission over the internet

Front

What are the two jobs of a CODEC in the context of VoIP?

Back

To convert analogue signals to digital and to compress the digital signal for transmission

Front

Which of the following is NOT a function of a CODEC at the receiver's end?

• To reassemble the digital signal
• To decompress and decode the digital signal back into an analogue one
• To convert the analogue signal back into a digital signal
• To transmit data packets across the internet

Back

To transmit data packets across the internet

Front

Which software is an example of VoIP software?

Back

Skype

Front

What is the primary function of VoIP technology?

Back

To send voice and video communication over the internet.