CABLE

        ~It is a medium that connects computer in a network.

WHAT ARE THE TYPES OF CABLE?

1. TWISTED - PAIR CABLE

~ is the most common type of cable.

~ have eight individual copper wires bundled together and covered with an insulting material.

    TYPES OF TWISTED - 

1.)PAIR CABLE

•  STP (SHIELDED TWISTED - PAIR

~ often used in "noisy" environments where a shield of metallic foil is wrapped around each of  the wire pairs, with an traditional overall shielding to protect against excessive electromagnetic interference.

• UTP (UNSHIELDED TWISTED) - PAIR)

~ is the most common form of twisted pair wairing.

~ it is less expensive and easier to work with an STP.

2. COAXIAL CABLE

~ the standard media used by cable TV operators.

~it consists of plastic insulator that separates the solid copper inner conductor and the woven, copper braid outer conductors to travel without outer interference. 

3. FIBER - OPTIC CABLE

~ has a reflective coating that allows light beam
  

STRAIGHT-THROUGH CABLE

~it is used to connect different type of devices.

CROSSOVER CABLE

~it is used to connect same type of devices.

WHAT ARE THE TYPES OF NETWORK TOPOLOGY?

Network Topology

- refers to the layout or structure of the network in relation with flow of data. Structure of a network and may be depicted physically or logically. It is an application of graph theory wherein communicating devices are modeled as nodes and the connections between the devices are modeled as links or lines between the nodes.

Types of networks topologies:

1. Linear Bus Topology

-is a type of network topology in which each device is connected one after the other in a sequential chain (shown right). In this case, the bus is thenetwork connection between the devices, and if any link in the network chain is severed, all network transmission is halted. Uses one long cable referred to all the backbone.

2. Star Topology

-is one of the most common computer network topologies. In its simplest form, a star network consists of one central hub which acts as a conduit to transmit messages. In star topology, every host is connected to a central hub. A star network is an implementation of a spoke–hub distribution paradigm in computer networks.

3. Ring Topology

- is a network configuration in which device connections create a circular data path. Each networked device is connected to two others, like points on a circle. Together, devices in a ring topology are referred to as a ring network. In a ring network, packets of data travel from one device to the next until they reach their destination. Most ring topologies allow packets to travel only in one direction, called a unidirectional ring network. Others permit data to move in either direction, called bidirectional.

4. Mesh Topology

-a network setup where each computer and network device is interconnected with one another, allowing for most transmissions to be distributed, even if one of the connections go down. It is a topology commonly used for wireless networks. Below is a visual example of a simple computer setup on a network using a mesh topology.


5. Hybrid Topology

-Hybrid topology is an integration of two or more different topologies to form a resultant topologywhich has many advantages (as well as disadvantages) of all the constituent basic topologiesrather than having characteristics of one specific topology.