Keep your PC secure. Instructions to uninstall computer viruses and other unwanted software.
Recent Posts
  • Basics of networks
    Basics of networks

    Computer network – a set of interconnected stand-alone computers to work together on information, computer and other tasks.


  • Token Ring topology
    Token Ring topology

    This topology is based on the topology of the “physical ring connecting a star.” In this topology, all workstations are connected to a central hub (Token Ring) in a physical star..


  • The topology of the “ring”
    The topology of the “ring”

    In a network with a ring topology all the nodes are connected by links in unbroken ring (not necessarily a circle) at which data is transmitted. The output of a PC..


  • Topology of “star”
    Topology of “star”

    The network was built on the topology of “star” each workstation connected cable (twisted pair) to the hub or hub (Hub) . Concentrator provides parallel computer and, thus, all the computers connected..


  • Network Topologies. Bus Topology
    Network Topologies. Bus Topology

    All computers on the network are connected by lines of communication. Geometric arrangement of lines relative to hosts and physical connection to the network nodes called the physical topology.


  • What is a DoS-attack?
    What is a DoS-attack?

    One of the characteristics of today’s Internet trends is the growing number of so-called DoS-attacks (from the English. Denial of Service - Denial of Service ). By DoS-attacks by hackers lead, causing an overload of..




  • The Internet
    The Internet

    Externally similar to the Internet phone or telegraph network. However, the connection method is somewhat different.



  • Topology LAN
    Topology LAN

    The topology of a computer network refers to a way to connect its components (computers, servers, printers, etc.). There are three basic topologies: a star topology; ring topologies; shared bus topologies.