Network Models 2.1 THE OSI MODEL •Established in 1947‚ the International Standards 1947‚ Organization (ISO) is a multinational body dedicated to ISO) worldwide agreement on international standards. standards. •An ISO standard that covers all aspects of network communications is the Open Systems Interconnection (OSI) model. It was first introduced in the late 1970s. OSI) model. 1970s • the open system is the set of protocols that allows any two different systems to communicate without regarding
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Alisa Ochoa Biology 3 Professor Mitch Voda 08 December 2011 Epigenetic: Hidden Switches Matt is a history teacher. His twin brother Greg is a drug addict. Growing up in the Boston area‚ both boys did well in high school: they were strong students in the classroom and decent athletes on the field‚ and they got along with their peers. Like many young people‚ the brothers drank the occasional beer‚ smoked cigarettes and experimented with marijuana. Then‚ in college‚ they tried cocaine. For Greg
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CONFIGURING A SWITCH AND ROUTER IT/242 INTRO TO WAN TECHNOLOGY Date: 12/23/2012 Switches are layer 2 devices and this makes them easier to configure than routers. Most of the time‚ the default configuration with switches will enable it to connect to PCs and servers together easily. These are the steps to begin configuring your switch: 1. Connect a console terminal to the console interface of your supervisor engine. 2. After a
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Understanding the OSI Model November 26‚ 2012 Understanding the OSI Model The Open Systems Interconnection (OSI) Model is a reference tool for understanding data communications between any two networked systems (Simoneau‚ 2012). The OSI Model dissects the communication process down to seven layers‚ where each layer performs specific functions. It helps break a network down to controllable pieces; without this OSI Model networks would be difficult to comprehend. The OSI Models’ seven-layers consist
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Router and Switch Configuration When installing‚ setting‚ and configuring a switch it is important to know what kind of switch is needed and installed in the network. For this purpose I have chosen the Cisco switches main line‚ which is the Catalyst Switches‚ which is one of the popular series and models. They include fixed-configuration desktop models‚ configurable plug-and-play modular chassis models and packages with high-speed buses into which many cards can be inserted. To configure
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The OSI‚ or Open System Interconnection‚ model defines a networking framework for implementing protocols in seven layers. Control is passed from one layer to the next‚ starting at the application layer in one station‚ and proceeding to the bottom layer‚ over the channel to the next station and back up the hierarchy. The OSI model is not a real network architecture‚ because it does not really specify the services and protocols each layer should use. It rather describes what the layers must do. Nevertheless
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CNC ROUTER Model XJ-2040 Working area 2‚000×4‚000×200mm Spindle motor 3kw/4kw/4.5kw Inverter-driven spindle motor cooled by water (or air for option) Working mode Stepper motor Control system DSP off-line control panel with USB interface(128MB) or PCIMC control system Drive mechanism Gear-wheel on x‚y axis Table surface Vacuum table and T-slot extrusions Frame Wholly steel structure Motion positioning accuracy ± 0.03/300mm Repositioning accuracy ± 0.05mm Max motion speed 50
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OSI Model Analogy Trevor Crews Strayer University The OSI model is the model developed for computer-to-computer communications over a network. This model breaks down all the functions that occur into seven distinct layers. These layers are‚ application‚ presentation‚ session‚ transport‚ network‚ data link‚ and the physical layer. Each one encompasses a specific part of the process that occurs during the communication. In order to simplify this think of it like sending a package through the
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Table of contents: 1. Introduction 1.1 History of the Concept 2. The OSI Reference Model 2.1 OSI Layer 1: The Physical Layer 2.2 OSI Layer 2: The Data Link Layer 2.3 OSI Layer 3: The Network Layer 2.4 OSI Layer 4: The Transport Layer 2.5 OSI Layer 5: The Session Layer 2.6 OSI Layer 6: The Presentation Layer 2.7 OSI Layer 7: The Application Layer 3. Summary of the OSI reference model 4. Sources 1. Introduction Over the past forty years computer networks have dramatically
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poem‚ “The Layers‚” I predicted that the poem would be about a person’s “layers‚” such as their personality‚ and who they present themselves to be on the outside versus who they really are on the inside. After reading the poem‚ I found the title in the line “Live in the layers‚ not on the litter.” In context of the poem‚ I’d say this line and the title are using layers to represent different parts of our lives. Throughout the poem‚ the speaker is exploring and explaining his past‚ which he compares
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