By Robert Padjen
Cisco dominates the internetworking scene with an over eighty percentage proportion of the routers used on the web. The mid-level Cisco qualified community specialist (CCNP) certification validates complicated wisdom of Cisco-based networks. The distant entry examination (640-605) is without doubt one of the 4 center tests that conceal a variety of issues, together with fitting, configuring, and working LAN, WAN, and dial-up entry providers for enterprises with mid-to-large sized networks. Cisco lately "refreshed" the 4 CCNP tests, including new questions and query codecs to the pool. The examination goals haven't replaced.
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Additional info for CCNP Remote Access Study Guide, Exam 640-605
And, in the final portion of this chapter, you will learn about WAN cabling and assembly issues. com What Is Remote Access? 3 preparation for Cisco’s Remote Access exam because it provides a framework for the subsequent chapters and the examination, not to mention real-world applications. What Is Remote Access? T he term remote access is broadly defined as those services used to connect offices over a wide geographical area. These services are typically encompassed under the guise of a wide area network (WAN).
At present, most DSL vendors offer a single PVC with DSL installations. This limits connectivity options and makes redundancy difficult. A second PVC could provide a link to another head-end, perhaps a distribution layer aggregation point, and most vendors have multiple DSLAMs in the central office. An SVC-based solution would also make a fault-tolerant design more successful. Another concern with current DSL installations is that most products do not offer security solutions. The RLAN model greatly reduces this risk since the links are isolated at Layer 2, but all connectivity must be provided by the head-end, including Internet connectivity.
Serial Line Internet Protocol (SLIP) The Serial Line Internet Protocol (SLIP) is designed for point-to-point serial connections using TCP/IP. The Point-to-Point Protocol (PPP), which you will learn about next, has effectively replaced SLIP. Some installations, however, still rely on SLIP because of its simplicity. Point-to-Point Protocol (PPP) The Point-to-Point Protocol (PPP) is a standard, efficient Layer 2 technology designed for connections between two endpoints. As such, it doesn’t include addressing functionality like Ethernet’s MAC address, but it can be augmented to operate in point-to-multipoint installations.