| Understanding of computer networks in general | | | | 2. Star, where the media used is a cable |
| can be interpreted as a collection of devices | | | | connection or 10/100/1000BASE-T UTP, Star |
| interconnected through an intermediary to the | | | | network resembling a star shape with its center is |
| communication media each other using the | | | | a hub or switch |
| services provided. Large or small all of a network | | | | 3. Ring, where the media connection used is cat 3 |
| composed of several building blocks; | | | | UTP cable or Token Ring. Ring network shape |
| 1. client computerclient computer is computers | | | | physically resembles a Star with its center is a |
| of users who use the service or access network | | | | device working in a Ring (information |
| resources;example: Folder Sharing, Printer Sharing | | | | MLP circle to be found playing goal) |
| 2. computer servercomputer server is | | | | 1. Bus Topology |
| computers that provide services, such as Folder | | | | Topology Bus provides a communications channel |
| Sharing, Printer Sharing. This server is usually | | | | for all devices so that each device must be |
| installed Network Operating System, such as | | | | alternately use the channel. Therefore there are |
| Windows Server 2000/2003, Linux, Novel | | | | only two devices communicate with each other in |
| Netware. | | | | a moment. To facilitate the use of the network, |
| 3. Network Interface Card | | | | used a method CSMA / CD (Carrier Sense |
| Network Interface Card is A network card | | | | Multiple Access / Collision Detected) that can |
| installed on a computer connected to the | | | | reduce the occurrence of the grace period (blank |
| network. | | | | channel) with collision detection information. |
| 4. Cable | | | | Bus topology networks with characteristics: |
| Every computer connected to the network | | | | • very low installation costs |
| usually uses cables as media intermediary. Type | | | | • The average speed of information transfer |
| of cable that is now often used twisted pair | | | | for each device is very slow because they have |
| cables, or commonly known as 10BaseT. | | | | to take turns using the channel |
| Other cable types are also called coaxial, | | | | • difficult to network management |
| commonly referred to as 10Base2 | | | | • difficult to expand (add) network |
| 5. switchswitch is every computer connected a | | | | 2. Star Topology |
| network cable is not always directly connected to | | | | At the time of a computer to communicate with |
| another computer, however, each computer must | | | | other computers through LAN (Local Area |
| be connected first to a devicecalled switches. | | | | Network), the computer will require the media |
| 6. wireless networkwireless network is one | | | | connections that form a certain topology. |
| network communication medium. | | | | 3. Ring Topology |
| Network Topology | | | | At the time of a computer to communicate with |
| At the time of a computer to communicate with | | | | other computers through a LAN (Local Area |
| other computers through LAN (Local Area | | | | Network), the computer will require the media |
| Network), the computer will require the media | | | | connections that form a certain topology. |
| connections that form a certain topology. | | | | The main difference between the Hub and Switch |
| There are three topology is known in computer | | | | is the Hub does not have routing facilities, so that |
| networks: | | | | all incoming information will be sent to all |
| 1. Bus, where the media connection is used coaxial | | | | computers (broadcast). While routing switches |
| cable (RG58) or 10Base-2, form resembling | | | | have the facility so that information received is |
| cut-Bus network has many stops (bus stop) | | | | only sent to the destination computer. |