Basic Computer Maintenance & Networking

▶ Introduction to Data Communication Networking

        

        * Data Communications

        * Components of Data Communication

          * Data Representation

        * Basic Concepts -

                                       (i)     Servers,

                                       (ii)    Client, 

                                       (iii)   Workstation, Hosts

  * Types of Computer Network : LAN, MAN & WAN

 

  * Types Network Architecture -

 

                                        (i)     Peer-to-peer,

                                        (ii)    Client-Server,

                                        (iii)   Distributed

* Transmission Types : Simplex, Half duplex and Full duplex

▶ Network Topology and Networking Devices

       

        ◉ Types of Topology -

(i)     Bus Topology;

(ii)    Ring Topology; 

(iii)   Star Topology;

(iv)   Mesh Topology;

(v)    Tree Topology;

(vi)   Hybrid Topology;

        ◉ Network Control Devices -

(i)     Hubs;

(ii)    Switches;

(iii)   Routers;

(iv)   Bridges;

(v)    Repeaters;

(vi)   Gateway;

(vii)  Modems;

▶ Transmission Media

       * Guided Media - Twisted Pair - UTP, STP ; Coaxial Cable ; Optical Fiber. 

      * Advantages of Optical Fiber and Disadvantage

      * Un - Guided Media : Wireless Communication - Communication Band

      * Microwave Communication ; Satellite Communication

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