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Showing posts with the label Networking
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The OSI Seven-Layer Model

This is the part of the course that strikes fear into many a network technician, but we’re pretty confident that when you finish this section, you’ll wonder what all the fuss is about! Honest! The …
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Peer-to-Peer Networks

Although traditional networking has always involved dedicated servers, you could almost always find specialized software to enable clients to share certain resources. Novell Personal NetWare, for exa…
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Home Networking On Windows 7

Join HomeGroup and Share Your Files. Windows 7 makes it  simple to set up secure home networks and share photos, music,  and even printers. To create a HomeGroup, click the Windows flag in the lowe…
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Physical Layer and Data Link Layer

1. Physical transmission = Physical function bits <-> electrical / optical signals transmit individual bits over the cable: modulation, encoding 2. Frame transmission = Data Link function b…
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Access Networks and Physical Media

How to connect end systems to edge router? Residential access nets Institutional access networks (school, company) Mobile access networks Characteristics: Bandwidth (bits per second) of access n…
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Address Resolution Protocol (ARP)

In an earlier section, there was an example where a chat program was written to communicate between two servers. To send data, the user (Tom) would type text into a dialog box, hit send and the foll…
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Local Area Networks Topologies

The way the nodes are connected to form a network is known as its topology. A physical topology defines the wiring layout for a network. Physical topologies fall into three main categories. Bus, Star…
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Remove Recycle bin in Windows 7

Recycle bin from Windows 7 Desktop can easily be removed. Methods to remove Recycle Bin from Windows 7 Desktop: 1. Remove from Control Panel Navigate to following address: Control Panel > All c…
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Network WAN Connections

Three options for connecting over a telephone service: Dial-up connections. Integrated Services Digital Network(ISDN) - A method of sending voice and data information on a digital phone line. Bas…
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Network Topology

A network consists of multiple computers connected using some type of interface, each having one or more interface devices such as a Network Interface Card (NIC) and/or a serial device for PPP networ…
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The Networking Problem

Networking is about transmitting messages from senders to receivers (over a “communication channel”). Key issues we encounter include: “Noise” damages (corrupts) the messages; we would like to be a…
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