Archive for the ‘computer network’ Category

High Speed Satellite Internet Connection: Proof of Advancing Technology

Tuesday, November 15th, 2011

The technological advancement concerning telecommunication service has changed in venture of worldwide interconnectivity. These changes have even touched the norms of internet services. Satellite internet made experts one step closer to real time evolution. The new era of such service provides a contemporary mechanism that surpassed what traditional internet connection can do at their best. Since people are new to this technology, many are curious about its abilities and how it claims to change telecommunication service as we know it today.

High-speed satellite internet providers are not at all connected to a wired service. As the name suggests, they use two-way satellite dishes that transmit data back forth to your modem, which sends signal to your computer. No need for telephone wires, or cable wires to get connection. If all you need is an internet service, satellite internet is the best option you have. Most of the times, it does just pass users judgments but it also exceeds their high expectations. When it comes to connection, you can rest assure that satellite internet provides high speed data transmission. Downloading and uploading of high memory files are transmitted so fast or more than 30X faster than dial up and over 20X faster than DSL or cable connection.

Satellite internet uses IP mechanism that’s pretty straightforward, though some might think so otherwise. Your computer is connected to the modem, the modem on the other hand is connected to the satellite dish that receives and sends signal from orbiting dish. When people uses internet browser the request is first sent to the satellite, which then pushes the signal to the internet provider. The requests is then processed and sent back to the computer using the same path. Now, all these happen in milliseconds. Really high speed is one of the many perks of using satellite internet. Aside from that, more than one user can use connect to the satellite at a time, so no additional connection is required. Installation is also very quick, anyone, even those who don’t have technical knowledge can install the dish and use the service at once. If you need satellite internet providing companies, just browse the net and you would find several providers.

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Computer Networking – Elements and Components

Friday, January 1st, 2010

When studying computer networks, one must consider the main elements that will compromise the computer network. The main elements that must be considered will be presented below:

1. Message: the message is a generic term that scribes the data to be transmitted. It can be email, webpage, user call, instant message, or any other forms. The message is generated by the end user that needs to make the transmission. This message will be fed to the network later.

Generally, the message is generated using software installed on computer. For example, if the message is email, it will be generated by email programs such as outlook. Also if the message is a web page request, it will be generated by a browser such as internet explorer. It can also be generated by a chatting program is it represents a call by the user.

2. Medium: the medium is the transmission path over which the data will be transmitted. Is is used to connect the end user with the network device or to connect the network devices with each other.

Many types exist for the medium. Mainly it can be wired or wireless medium. The wired medium can be copper or optical fibers. The copper is subdivided into coaxial cables and twisted pairs. The copper wires carry data as electrical pulses while the optical fiber carry data as light pulses. The wireless medium carries data as electromagnetic waves. Each of the above mediums has its own specifications and used according to the application.

3. Devices: there are two basic types of devices in the network: end user devices and network devices. The end user device is considered to be the source of the message. It can be a client computer or an IP phone. The function of the end user device is to send the data to the network.

On the other hand, the network devices are used along with the medium to forward the data generated by the end user device. They are located in between the end user devices and connected between them through the cables.

The main function of the computer network devices is to forward the data to the correct destination based on the address that is send along with the data. The two main devices that accomplish this are the routers and the switches. The router forwards the data according to the IP address while the switch forwards the data according to the MAC address inside the data frame.

4. Rules: the rules are the protocols that used between the end user devices that organize the communication. The two popular protocols are the IP protocol and the TCP protocol. When the end user needs to send the data, it runs a conversation first with the other device according to a set of rules that prepares for the transmission. Each network uses its own protocols set up by the administrator of the network to manage the operations inside the network. Note that this element is a software element and is set up by software programs

Youssef Edward is an Electrical Engineer and he is the owner of tips-made-easy.info site where thousands of computer and network tips can be found. He studied too much in many branches of computer science. Click below to learn much more about computer networks

Computer Networking Connectivity.

Computer Network Devices overview.

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