Answer: URN(Uniform Resource Name) is the basically a subset of the Uniform Resource identifier(URL). It uses "urn"scheme for the working an implementation. Uniform resource name functions by identifying components uniquely through their name.
The most common example of URN is ISBN (International Standard Book Number)number which helps in the unique searching and identification of book.
Software is also called a program or an application.
The answer is D: Struck down.
Options A, B, and C are the most common types of fatal construction accidents in the United States. Falls, electrocutions, being struck by an object, and workers caught in or between things are responsible for over 64% of construction workers death. Among these four events, falls kill most construction workers followed by electrocutions, falling objects, and workers caught in or between things.
YouTube, Twitch, and Beam are media that you can stream on.
(If that's what you are looking for.)
It's definitely not ring or bus either mesh or Ethernet