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

By Kent Hundley

By means of supplying the hot provider Routing Certification software, Alcatel-Lucent is extending their succeed in and data to networking execs with a complete demonstration of ways to construct shrewdpermanent, scalable networks. Serving as a "course in a book" from Alcatel-Lucent—the global chief in designing and constructing scalable systems—this source pinpoints the pitfalls to prevent while development scalable networks, examines the main winning strategies on hand for engineers who're construction and working IP networks, and offers overviews of the web, IP routing and the IP layer, and the perform of starting the shortest course first.

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POPs. 8. A company that has locations throughout the country can obtain service at each location from a Tier 1, Tier 2, or Tier 3 provider. What is one reason a company might choose to connect all locations to a Tier 1 provider despite the higher costs involved? A. Sites at different tiers cannot communicate. B. Tier 3 providers don’t use TCP/IP. C. Only Tier 1 providers provide content. D. A single provider could offer SLAs to each location. indd 33 P ost-A ssessment 33 6/3/09 8:00:06 PM 9. Which of the following services would likely be offered by a content provider but not a service provider?

A major motivation behind the bundling of traditionally offered individual services is cost reduction. Another motivation is to offer customized services with varying price points. For example, ISP A may offer its end-users three packages: a basic service, a premium service, and an elite service. Each package is incrementally priced and consists of higher service utilization. The basic package could offer a 10 Megabits per second (Mbps) combined voice, Internet, and basic video service, whereas the premium and elite packages could be a 20 or 40 Mbps voice, very-high-speed Internet, and highdefinition video services.

You will often encounter vendor technologies that perform certain new functions such as “content switching” that purport to perform forwarding operations on Layer 4 or Layer 7. It is a key part of evaluating these claims and technologies that you understand what these layers entail and why having devices that understand these upper layers might be important for particular services. indd 30 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 8:00:05 PM Chapter Review Now that you have completed this chapter, you should have a good understanding of the following topics.

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