Question

Choose all correct statements about Overlay Network.

		Suppose you wanted to use a routing algorithm that commercial router vendors were not willing to include in their products. You could simply run your algorithm on a collection of end hosts, and tunnel through the Internet routers.
		Overlays are ideal for deploying experimental versions of IP that you hope will eventually take over the world. For example, IP multicast started off as an extension to IP and even today is not enabled in many Internet routers.
		The general approach of end system multicast is to support multiple levels of overlay networks, each of which extracts a subgraph from the overlay below it, until we have selected the subgraph that the application expects.
		Another function that can be performed by an overlay is to find alternative routes for traditional unicast applications. Such overlays exploit the observation that the triangle inequality holds in the Internet.
		Peer-to-peer system and  overlay network are complimentary to one another without any similarity.

Answer 1

(a)Choose all correct statements about Overlay Network.

Solution::- all the options are correct about Overlay Network.

(a)Suppose you wanted to use a routing algorithm that commercial router vendors were not willing to include in their products. You could simply run your algorithm on a collection of end hosts, and tunnel through the Internet routers.

(b)Overlays are ideal for deploying experimental versions of IP that you hope will eventually take over the world. For example, IP multicast started off as an extension to IP and even today is not enabled in many Internet routers.

(C)The general approach of end system multicast is to support multiple levels of overlay networks, each of which extracts a subgraph from the overlay below it, until we have selected the subgraph that the application expects.

(d)Another function that can be performed by an overlay is to find alternative routes for traditional unicast applications. Such overlays exploit the observation that the triangle inequality holds in the Internet.

(e)Peer-to-peer system and  overlay network are complimentary to one another without any similarity.