Question

Explain the different method of data transmission

Answer 1

Data is transferred in the form of bits between two or more digital devices. There are two methods used to transmit data between digital devices: serial transmission and parallel transmission. Serial data transmission sends data bits one after another over a single channel. Parallel data transmission sends multiple data bits at the same time over multiple channels.When data is sent or received using serial data transmission, the data bits are organized in a specific order, since they can only be sent one after another. The order of the data bits is important as it dictates how the transmission is organized when it is received.When data is sent using parallel data transmission, multiple data bits are transmitted over multiple channels at the same time. This means that data can be sent much faster than using serial transmission methods.

Answer 2

Answer:

The movement of data from one digital device to another is known as data transmission. Through point-to-point streaming data or channels, this transmission is carried out. Prior until now, these channels might be copper lines, but they are now much more likely to be a component of a wireless network.

Explanation:

Different methods of data transmission

1. Twisted Pair:

Telephone wires are frequently made of twisted pairs. They don't need to be amplified in order to transmit data over vast distances (sometimes over several kilometers). There will undoubtedly be a number of these twisted pairs nearby when it comes to telephone wires, which are lines that exit from densely inhabited areas. The twisting prevents these from interfering with one another.

These twisted pairs can transmit both analog signals, and they frequently have bandwidths of up to roughly 10 Mbps over small distances (megabits per second). In any event, the diameter of the wire and the distance over which the data are sent determine the bandwidth that they are capable of carrying.

2. Shielded Twisted Pair:

These cables are twisted, pricey, and protected, as their name suggests. Although some are still in use, they are almost always being used in some IBM installations. They were first introduced by IBM in the 1980s but never really took off.

However, they have never achieved much success. The majority of users believe that they have been both bulky and expensive, and also that their bandwidth characteristics are not significantly better than UTP cabling's. As a result, they are essentially no longer available.

3. Baseband Coaxial Cable:

Baseband is a term used to describe a communications channel that uses the transmission medium as a single-channel device and carries information digitally. This implies that a single channel is employed for communication with networked devices, enabling computers to send and receive data over a single connection.

4. Broadband Coaxial Cable:

While broadband coaxial cables are occasionally utilised in computer networks, these instances are rather uncommon. Broadband coaxial cables are typically employed in analogue circuits. They require devices at either end to convert analogue signals to digital signals and vice versa because they normally send analogue signals. These modulators & demodulators also determine the permitted bandwidth.

5. Fiber Optics:

For long-distance & high-performance data networking, fiber optics are utilized. Additionally, it is frequently utilized in telecommunications services like internet, television, and telephones. A network cable with glass fiber strands inside of an insulated housing is known as a fiber optic cable. They are made for communications and long-distance, high information networking. Fiber optic cables offer a higher capacity and can carry data over greater distances than conventional wires.

6. IEEE Standards:

For transmission protocols and networks used by LAN and MAN, IEEE has produced a number of standards. These guidelines are referred to as IEEE 802 guidelines. One of these, 802.1, introduces the group of standards and specifies the interfaces via which they are to be used. These standards have also been adopted by ISO as 8002 standards. A section of the "Data Link Layer" is described in 802.2.

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