The table below compares four different methods of internet communication. Method Real-time Visual Written record Email No No Yes VoIP Yes No No Video confe...

(a) VoIP stands for Voice over Internet Protocol. It is a technology that allows voice and telephone calls to be made over the internet rather than through traditional telephone lines. [1] The voice signal is converted into digital data packets, transmitted over the internet, and reassembled at the receiving end.

(b) One advantage of using email compared to posting a letter is that email delivery is almost instant, reaching the recipient in seconds regardless of distance, whereas a posted letter can take days. [1]

(c) One advantage of video conferencing compared to VoIP is that video conferencing allows participants to see each other, enabling them to read body language, facial expressions and share visual presentations. [1] This makes communication richer and more effective than voice alone.

(d) Two reasons why a company might choose video conferencing over travelling to a face-to-face meeting:

• It saves significant travel time, allowing employees to attend meetings from their desks. [1]
• It saves money on travel costs such as flights, hotels and fuel. [1]

(e) One disadvantage of video conferencing is that it requires a fast and reliable internet connection; poor connectivity can cause audio and video lag, freezing or disconnections that disrupt the meeting. [1]

(f) Two pieces of hardware needed for video conferencing:

• A webcam or camera to capture the participant's video feed. [1]
• A microphone to capture the participant's voice. [1]