Author Nick: ciscopractice
Site: http://www.ciscopractice.com
We’ll take a close look at UDP, how it works, and what it does. Which includes an overview of the UDP service model which discusses socket programming using UDP. To motivate our discussion about UDP, suppose you were interested in designing a no-frills, bare-bones transport protocol. How might you go about doing this? You might [...]
The CCNP Routing test contains about 0 questions to be completed in about 75 Minutes. However, understand that your test may vary. Many questions on the exam have answer choices that at first glance look identical—especially the syntax questions! Remember to read through the choices carefully because “close doesn’t cut it.” If you put commands [...]
Now that we have looked at a number of important network applications, lets explore how network application programs are actually written. We’ll write application programs that use TCP; in the following we’ll write programs that use UDP.
Recall from many network applications consist of a pair of programs—a client program and a server program—residing in to [...]
From our discussion thus far it is apparent that the Internet is an extremely complicated system. We have seen that there are many pieces to the Internet: numerous applications and protocols, various types of end systems, packet switches, and various types of link-level media. Given this enormous complexity, is there any hope of organizing network [...]
The initial ARPAnet was a single, closed network. In order to communicate with an ARPAnet host, one had to be actually attached to another ARPAnet IMP. In the early to mid-1970s, additional stand-alone packet-switching networks besides ARPAnet came into being.
ALOHANet, a microwave network linking universities on the Hawaiian islands [Abramson [...]
Before building your network application, you also need a basic understanding of how the programs, running in multiple end systems, communicate with each other. In the jargon of operating systems, it is not actually programs but processes that communicate. A process can be thought of as a program that is running within an end system. [...]
Cisco has created new certifications that will help you get the coveted CUE, as well as aid prospective employers in measuring skill levels, Before these new certifications, you took only one test and were then faced with the lab, which made it difficult to succeed With these new certifications; which add a better approach to [...]