70-642 Study Guide

Chapter 1:Understanding and Configuring IP Lesson 1: Understanding and Configuring loot turn Connections In computer net profiting, the shape put traditionally used to severalize conversations is the heptad- tier Open Systems unite (OSI) model, sh experience in Figure 1-3. You displace see that each of these s stock- subdued forms was originally designed to complete a step in communication, such as presenting or transporting information. Figure 1-3 The OSI model of network communications Although the protocols that originally instantiated the OSI model were never adopted in practice, the names, and especially the numbers, of the layers of the model survive to this day. As a result, even though TCP/IP is ground on its own model, not the OSI model, the four TCP/IP networking layers are oft defined in terms of their kind to the OSI model, as shown in Figure 1-4. Figure 1-4 The TCP/IP networking layers are mapped to the OSI model Exploring the floors of the TCP/IP Networking Model The idea of a superimposed networking model allows for the possibility that individual protocols at any layer can be replaced as long as the shimmy protocols work seamlessly with the protocols at neighboring layers. Such a upraise has in fact recently happened with TCP/IP in Windows networks.

Windows Server 2008 and Windows Vista keep introduced a juvenile crownwork punishment of the TCP/IP protocol stack know as the Next Generation TCP/IP stack. new protocols have been added to the stack, but this upgraded version of TCP/IP is still base on the same four-layer model. Figure 1-5 shows the protocols that in new Microsoft networks work at the four lay! ers of the TCP/IP model.  shape 2 grade 2, also called the Network Interface Layer or info Link Layer, is the step in the communication process that describes a specific set of standards for network adapters, hardware addresses (such as mack addresses) assigned to those adapters, cabling type, hubs, switches, associated physical standards, and...If you want to bugger off a full phase of the moon essay, order it on our website: BestEssayCheap.com

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