Kamis, 04 September 2014

several types of connections

several types of connections to the internet, either using a cable (wire) or cordless (wireless). This is supported by the development of information and communication technology today allows us to connect our computers to the Internet through a variety of ways, as for the types of connections as follows:
Type of connection to the internet with cable
1. Dial-Up (Speed​​-Dial Up Internet access via the PSTN Line)
Is already installed in your home phone line? Telephone network has been penetrated by wide. If we have a computer already and then we can connect to the Internet. How to connect your computer to the Internet using a regular phone cable or more commonly referred to as dial up. Dial-up via the PSTN (Public Switched Telephone Network) is the way we. connected to the ISP (Internet Service Provider) through the regular telephone network (PSTN) example is "Instant Telkomnet" Telkom ISP.
Dial-up Connection is generally used by individuals who want to access the Internet from home. Computers are used for dial-up in general is a single computer (not the computer network). Speed ​​Internet access using a dial-up can reach maximum speed of 56 kilo bytes persecond (kbps).
2. ADSL (speed Internet access-ADSL)
ADSL (Asymetric Digital Subscriber Line) is a modem technology that works at a frequency between 34 kHz to 1104 kHz. This is the main cause of the difference in the speed of data transfer between an ADSL modem with a conventional modem (which works at frequencies below 4 kHz). The advantage of ADSL is to provide high-speed internet access capability and voice / fax simultaneously (on the customer side by using a splitter to separate the telephone line and a modem line).
What is the maximum bandwidth is obtained when we use the Internet access using ADSL: For line rate of 384 kbps, the maximum bandwidth is obtained close to 337 kbps, 384 kbps to line rate, average throughput (download speed) can be obtained approximately 40 Kb / s, to the line rate of 512 kbps, which is obtained close to the maximum bandwidth of 450 kbps. For a 512 kbps line rate, average throughput (download speed) that can be obtained is about 52 Kb / s.
3.LAN (High Speed ​​Internet Access-LAN)
One way to connect to the internet is to connect your computer to a computer network that is connected to the internet. This method is widely used in corporate, college campuses, and the cafe-cafe. A computer that is used as a server (computer services) connected to the internet. Other computers on the network are then connected to the server. Usually a computer acting as a server connected to an Internet Service Provider (ISP) over a telephone line or via an antenna. While the computer to connect to the server computer is done by using a LAN card (LAN card) and coaxial cable (UTP).
Commonly abbreviated Local Area Network LAN is a computer network that covers only a small area network. Currently, most LANs based on the IEEE 802.3 Ethernet technology using a switch device, which has a data transfer speed of 10, 100, or 1000 Mbit / s. In addition to Ethernet, the current technology 802.11b (or so-called Wi-Fi) is also often used to form a LAN.
4 Cable TV (Speed ​​Internet Access)
Have you ever heard of the TV / cable TV? TV broadcasts often to offering cable TV sets. Cable TV networks to connect computers to the Internet has been widely used. Cable television is considered suitable especially for the internet user of the family (household). Excess accessing the internet using a cable TV network can access the internet at any time and free of distractions busy phone.
The cable TV network can be used to connect to the internet with a maximum speed of 27 Mbps downstream (download speed to the user) and 2.5 Mbps upstream (from the user upload speed). In order to use the cable modem, the computer must be equipped with an Ethernet card (Ethernet card).
In the home network, the cable from "cable TV" using coaxial cable and installed a "dividing line" (splitter) cable. After the cable from the network (network cable) pass splitter, cable channeled into two channels, one for TV and one to the cable modem. Of a new cable modem to the ethernet card and then to the computer.

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