10)Classification of topological network elements.

Network topology is the interconnected pattern of network elements. A network topology may be physical, mapping hardware configuration, or logical, mapping the path that the data must take in order to travel around the network.

Local networks consist of end devices and intermediate, connected to a cable system. Define some basic concepts:

      1) Network nodes - final and intermediate devices, endowed network addresses. To network nodes include computers with network interface acting as workstations, servers, or   both roles, network peripherals (printers, plotters, scanners), network communication devices (modems);  routers.

      2) Cable segment - segment cable or chain segments cables electrically connected to each other, providing a connection two or more nodes.

      3)network segment (or segment) - a set of nodes share a common transmission medium. Reference to technology Internet is a collection of nodes connected to a single cable segment.

      4) Network (logic) - a set of nodes with a single system.  Addressing the third level model OSI. Examples include IPX-network, IP- net. Each network has its own address, these addresses operate routers to forward packets between networks.

  5) cloud (cloud) - communication infrastructure with uniform  external interfaces. An example of the cloud can be a city long-distance, international telephone system at any place

11. Basic concepts: network nodes, cable segment, the segment of the network, a logical network, cloud, passive and active communication devices.

1) Network nodes - final and intermediate devices, endowed network addresses. To network nodes include computers with network interface acting as workstations, servers, or   both roles, network peripherals (printers, plotters, scanners), network communication devices (modems);  routers.

      2) Cable segment - segment cable or chain segments cables electrically connected to each other, providing a connection two or more nodes.

      3)network segment (or segment) - a set of nodes share a common transmission medium. Reference to technology Internet is a collection of nodes connected to a single cable segment

 4) Network (logic) - a set of nodes with a single system.  Addressing the third level model OSI.

  5) cloud (cloud) - communication infrastructure with uniform  external interfaces. An example of the cloud can be a city long-distance, international telephone system at any place

On a different note communication can come in the form of technology through a variety of devices like cell phones, Internet, pagers, intercoms, radios and many more. If being passive in terms of communicating means a lack of confrontation 1A passive device does not require a source of energy for it to work. These devices are often used in electronic engineering. For example, if a device uses batteries it is a passive device. An example of a passive communication device could be a microphone that uses batteries to operate or a medical alarm system.

Active communication mode: Both initiator and target device communicate by alternately generating their own fields. A device deactivates its RF field while it is waiting for data. In this mode, both devices typically have power supplies.