Question

Discuss how a router knows where to send a message and then any experience you might have setting
one up.

In your opinion what are the challenges in establishing a network connection between two points over a
large distance? Describe your own knowledge of this network configuration.

Answer 1

Most home routers use a special-case of NAT called PAT.

You'll also see it referred to as NAPT, or IP Masquerading. All three of the latter terms mean the same thing in general use. (The acronyms - Network Address Translation / Port Address Translation / Network Address Port Translation)

When the packet goes out from your internal machine, the source address is rewritten as you are aware. The source port is also changed, usually to a high number, and the router keeps an address translation table.

Your computer sends the packet to the router, which picks a new random high port and rewrites the packet. Each outbound connection gets its own port on the router.

Now a days,systems have the ability to do data processing and can control even in remote areas and can be connected in digital as well as in wireless networks through out the world in all objectives.

Although networked control systems are fairly mature in a a variety of industrial applications,the recent trend towards the integrated devices through wireless rather than wired communication are having highlighted important potential application advantages as well as several challenging problems for current generation's research.