Windows MS-DOS is the operating system created by Microsoft.
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Voice Over IP (VOIP) is the option that allows the transmission of voice and often video communication over the Internet.
So, this doesn't refer to mobile or other telephone communication, but rather to the Internet solely. Applications that are examples of this type of technology are Skype, Teamspeak, Ventrilo, and others. This technology is becoming better and better with each day and will probably replace phones completely in the future.
Answer: I do belive is says Vans
Explanation:
It's an example of a poorly written email, it looks like somebody is angry and yelling at you, these types of emails can be described as a poor etiquette.
