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Backing Up Windows XP Registry 2007-03-18 13:31:00 Registry Editor is a tool for viewing and changing settings in your system registry, which contains information about how your computer runs. Almost the entire settings are stored in the registry.Although Registry Editor enables you to inspect and modify the registry, it's advisable to use Registry Editor only if the GUI does not provide the option you're looking for. Making incorrect changes in the registry can break your system. It's highly advisable to backup the registry before editing any portion of it.One way to backup the registry is to create a System Restore snapshot. System Restore returns your computer to a previous snapshot without losing recent personal information, such as documents, history lists, favorites, or e-mail. It monitors the computer and many applications for changes and creates restore points. You restore these snapshots when your configuration isn't working. This method is unreliable in case you want to rollback the registry changes made a longtime ago, i Read more:Backing
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Introduction to Networks 2007-03-03 15:32:00 What is a Network? A network consists of two or more computers that are linked in order to share resources (such as printers and CD-ROMs), exchange files, or allow electronic communications. The computers on a network may be linked through cables, telephone lines, radio waves, satellites, or infrared light beams. The two basic types of networks include: * Local Area Network (LAN) * Wide Area Network (WAN) Local Area Network A Local Area Network (LAN) is a network that is confined to a relatively small area. It is generally limited to a geographic area such as a writing lab, school, or building. Rarely are LAN computers more than a mile apart. In a typical LAN configuration, one computer is designated as the file server. It stores all of the software that controls the network, as well as the software that can be shared by the computers attached to the network. Computers connected to the file server are called workstations. The workstations can be less powerful than the file server, an Read more:Introduction
Troubleshoot configuration errors in Microsoft Windows XP 2007-04-14 21:42:00 How to troubleshoot configuration errors in MicrosoftWindows
XP by using the System Configuration utility (Msconfig.exe).The System Configuration utility automates the routine troubleshooting steps that Microsoft Product Support Services Support Professionals use when they diagnose system configuration issues. When you use this utility to modify the system configuration, you can select check boxes to eliminate issues that do not pertain to your configuration. This process reduces the risk of typing errors that you may make when you use a text editor such as Microsoft Notepad. You must be logged on as an administrator or as a member of the Administrators group to use the System Configuration utilityTo start the System Configuration utility, click Start, click Run, type msconfig in the Open box, and then click OK. When you use the System Configuration utility, you can easily reset or change the configuration settings in Windows to include preferences for the following files and settings Read more:Microsoft Windows
Network Topologies 2007-06-17 14:18:00 Network TopologiesThe term "topology" refers to the layout of connected devices on a network.Topology in Network DesignA topology can be consider as a network's virtual shape or structure. This shape does not necessarily correspond to the actual physical layout of the devices on the network. For example, the computers on a home LAN may be arranged in a circle in a family room, but it would be unlikely to have ring topology.Network topologies are categorized into the following basic types:1. Bus2. Ring3. Star4. Tree5. MeshBus TopologyBus networks use a single cable to connect all devices. A single cable functions as a shared communication medium that devices attached with an interface connector. A device wanting to communicate with another device on the network sends a broadcast message onto the wire that all other devices see, but only the intended recipient actually accepts and processes the message.Bus networks work best with a limited number of devices. If more than a few dozen com
Backing Up Windows XP Registry 2007-06-17 04:26:00 Backing Up Windows
XP Registry
Registry Editor is a tool for viewing and changing settings in your system registry, which contains information about how your computer runs. Almost the entire settings are stored in the registry.Although Registry Editor enables you to inspect and modify the registry, it's advisable to use Registry Editor only if the GUI does not provide the option you're looking for. Making incorrect changes in the registry can break your system. It's highly advisable to backup the registry before editing any portion of it.One way to backup the registry is to create a System Restore snapshot. System Restore returns your computer to a previous snapshot without losing recent personal information, such as documents, history lists, favorites, or e-mail. It monitors the computer and many applications for changes and creates restore points. You restore these snapshots when your configuration isn't working. This method is unreliable in case you want to rollback the registry Read more:Backing
Introduction to Networks 2007-06-17 03:49:00 What is a Network?A network consists of two or more computers that are linked in order to share resources (such as printers and CD-ROMs), exchange files, or allow electronic communications. The computers on a network may be linked through cables, telephone lines, radio waves, satellites, or infrared light beams.The two basic types of networks include:* Local Area Network (LAN)* Wide Area Network (WAN)Local Area NetworkA Local Area Network (LAN) is a network that is confined to a relatively small area. It is generally limited to a geographic area such as a writing lab, school, or building. Rarely are LAN computers more than a mile apart.In a typical LAN configuration, one computer is designated as the file server. It stores all of the software that controls the network, as well as the software that can be shared by the computers attached to the network. Computers connected to the file server are called workstations. The workstations can be less powerful than the file server, and they ma Read more:Introduction
Voice over Internet Protocol 2007-06-29 13:13:00 How VoIP / InternetVoice
WorksVoIP services convert your voice into a digital signal that travels over the Internet. If we are calling a regular phone number, the signal is converted to a regular telephone signal before it reaches the destination. VoIP can allow you to make a call directly from a computer, a special VoIP phone, or a traditional phone connected to a special adapter. In addition, wireless "hot spots" in locations such as airports, parks, and cafes allow you to connect to the Internet and may enable you to use VoIP service wirelesslyAlthough progressing rapidly, Internet telephony still has some problems with reliability and sound quality, due primarily to limitations both in Internet bandwidth and current compression technology. As a result, most corporations looking to reduce their phone bills today confine their Internet-telephony applications to their intranets. With more predictable bandwidth available than the public Internet, intranets can support full-duplex, re Read more:Protocol
Half and Full Duplex 2007-06-22 15:34:00 Duplex" simply means to send and receive data (the human voice) from the same device whether that be with phone, 2-way radio, or Computer.Half-duplex devices let you send and receive, but only one-way at a time. If you've ever used a walkie-talkie, then you know what half-duplex conversations sound like. You have to push the TALK button to send your message. But as long as you are holding the TALK key, you can't hear what anyone else is saying. You must release the button to receive.Enter full duplexActually, full duplex is nothing new. In fact, you already know exactly what it sounds like. Your corded or cordless phones are full-duplex devices letting you and your caller speak simultaneously without any dropouts in either one of your voices.It's when you use a hands-free speakerphone that you really appreciate full duplex. Conventional speakerphones must shut the speaker off when the mic is activated so as not to pick up your caller's voice and transmit it along with yours causing Read more:Duplex
Hardware Require To Build Any Network 2007-11-19 11:56:00 All networks are made up of basic hardware building blocks to interconnect network nodes, such as Network Interface Cards (NICs), Bridges, Hubs, Switches, and Routers. In addition, some method of connecting these building blocks is required, usually in the form of galvanic .Less common are microwave links or optical cable (optical fiber). Network Interface Cards A network card, network adapter or NIC (network interface card) is a piece of computer hardware designed to allow computers to communicate over a computer network. It provides physical access to a networking medium and often provides a low-level addressing system through the use of MAC addresses. It allows users to connect to each other either by using cables or wirelessly. Repeaters A repeater is an electronic device that receives a signal and retransmits it at a higher level or higher power, or onto the other side of an obstruction, so that the signal can cover longer distances without degradation. Because repeaters work Read more:Hardware
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