Alcatel-Lucent Scalable IP Networks Self-Study Guide: by Kent Hundley

By Kent Hundley

By means of providing the hot provider Routing Certification application, Alcatel-Lucent is extending their achieve and information to networking execs with a entire demonstration of the way to construct clever, scalable networks. Serving as a "course in a book" from Alcatel-Lucent—the international chief in designing and constructing scalable systems—this source pinpoints the pitfalls to prevent whilst development scalable networks, examines the main profitable suggestions on hand for engineers who're construction and working IP networks, and gives overviews of the net, IP routing and the IP layer, and the perform of commencing the shortest course first.

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Extra info for Alcatel-Lucent Scalable IP Networks Self-Study Guide: Preparing for the Network Routing Specialist I (NRS 1) Certification Exam (4A0-100)

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Which of the following OSI layers is not paired with the correct implementation? A. Layer 7—Email B. Layer 3—TCP C. Layer 4—UDP D. Layer 2—PPP You will find the answers to each of these questions in Appendix A. com to take all the assessment tests and review the answers. 1: Before the Internet In the earliest days of computing circa the late 1960s, the majority of companies purchased only a single large system to handle all of their data processing needs. The systems were proprietary and closed, using hardware and software architectures that were compatible only with the same manufacturers’s equipment.

4 : Overview of TC P / I P 19 6/3/09 8:00:01 PM The Transport Layer The transport layer is the application’s interface to the network. The transport protocol provides a mechanism for an application to communicate with an application residing on another device in the network. In the TCP/IP protocol suite, there are two transport protocols: the Transmission Control Protocol (TCP), and the User Datagram Protocol (UDP). TCP is a connection-oriented protocol that provides an ordered and reliable transfer of data over the network.

Examples of these types of providers would be most small providers that service only a single city or small regional network. IXPs allow various Tier 1, 2, and 3 providers to exchange Internet data. The IXPs enable information exchange at local points, which avoids having to traverse or backhaul traffic through major points in order to reach the Internet. You can think of an IXP as serving the same purpose as a centralized train station or airline hub. indd 10 C h a p t e r 1 n I n t roduc t ion T o N e t wor k i ng 6/3/09 7:59:57 PM arrive from various providers and through the magic of Internet routing protocols are shunted off to the next provider’s network for delivery to their ultimate destination.

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