The maximum speed of the Internet, offered in the framework of modern technologies

One of the seemingly simple questions, to which there is no definitive answer, is the following: "What is the maximum speed of digital data exchange between two computer systems?" For example, it is known that as part of the experiment, Japanese technicians carried data transfer between computers at speeds exceeding two terabytes per second (20 terabit in 2012). However, the cost of implementing such a solution is too high, which does not allow making mass technology. Such a high result remains the lot of specialized computer systems and prototypes of network equipment. Ordinary owners of computers are more interested in the question of what is the maximum speed of the Internet offered by this or that provider.

Necessity

The volume of modern software packages and multimedia files is increasing at an incredible rate. For example, if a distribution of a known Windows XP operating system was placed on a standard 700 MB CD, subsequent versions require DVDs (partially or completely). Obviously, to reduce the time spent on data transmission, the maximum network speed must be increased. Otherwise, working with many network resources can turn into a continuous wait for the transfer process to be completed.

Maximum ADSL speed

One of the technologies that is still actively used by some users is ADSL. It represents the development of a modem-type connection. At the same time, existing telephone lines are used. A special device - DSLAM is installed at the PBX. The subscriber from his side connects to the computer the corresponding modem. DSLAM is an intermediate link between the PBX equipment and the subscriber. In comparison with specialized cable solutions, the advantage is that if there is a fixed telephone and an appropriate provider, then the Internet connection can be performed as soon as possible.

The maximum speed of such a solution depends on the characteristics of the line, the tariff plan and the capabilities of the equipment. So, for ADSL standard ITU G.992.1 Annex A (B), the "ceiling" of download speed is 12 Mbit, and the return is 1.3 Mbit (the channel is always asynchronous). But in the improved ADSL2 + solution (ITU G.992.5 Annex M mode) the speed increased to 24 / 3.5 Mbit, respectively. Most home users can target 8/1 Mbps at best.

Wired analog

At present, solutions based on twisted pair and optical communication lines are more popular. In the first case, data is transmitted via copper conductors of the cable with speeds up to 100 Mbit. Gigabit speeds for ordinary users are rarely provided, since there is a restriction on the length of the cable section from the switchgear to the subscriber's computer. Much more technological lines created on the basis of optical lines allow the transfer of at least 10 Gbit of data over the fiber, and if one considers the possibility of multiplying the number of channels in one fiber, the total transfer rate can be measured by terabit. When connected to fiber optic networks, the user is usually given from 100 megabits to 1 gigabit.

Wireless Lines

Due to the proliferation of portable communication devices, for many, the question of what is the maximum speed of Wi-Fi began to be of special interest. Currently, it is up to 140 Mbit (even for 802.11n devices with the claimed 300 Mbit / s). A huge influence on the high-speed capabilities of wireless communication lines are between barriers (walls, etc.) located between the devices.