topology resentation

TOPOLOGY : 

TOPOLOGY

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A linear bus topology consists of a main run of cable with a terminator at each end. ADVANTAGES: Easy to connect a computer. Requires less cable length. DISADVANTAGES: Network shuts down if there is a break in the main cable. Terminators are required at ends. Difficult to identify the problem. LINEAR BUS

STAR TOPOLOGY : 

STAR TOPOLOGY A star topology is designed with each node connected directly to a central network hub. ADVANTAGES: Easy to install. No disruptions to the network when connecting or removing devices. Easy to detect faults. DISADVANTAGES: Requires more cable length. If the hub fails, nodes attached are disabled. More expensive.

TREE OR EXPANDED STAR : 

TREE OR EXPANDED STAR A tree topology combines characteristics of linear bus and star topologies. ADVANTAGES: Point-to-point wiring for individual segments. Supported by several hardware and software venders. DISADVANTAGES: Length of each segment is limited by the type of cabling used.

RING TOPOLOGY : 

RING TOPOLOGY In ring network, each node is connected to two adjacent nodes in the form a closed ring or loop. ADVANTAGES: Nodes can be easily added or removed. Less expensive. DISADVANTAGES: Difficult to install and maintain. If a node fails, it affects the entire network.

MESH TOPOLOGY : 

MESH TOPOLOGY A mesh topology combines characteristics of bus, ring and star topologies. ADVANTAGES: Point-to-point wiring for individual segments. Supported by several hardware and software venders. DISADVANTAGES: If the backbone line breaks. the entire segment goes down.

HYBRID TOPOLOGY : 

HYBRID TOPOLOGY It is the combination of more than one topology. Money Length of cable needed Future growth Cable type CONSIDERATIONS WHEN CHOOSING A TOPOLOGY

NETWORK DEVICES : 

NETWORK DEVICES HUB: A connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. SWITCH: A network switch or switching hub is a computer networking device that connects network segments. WIRELESS ACCESS POINT: (WAP) is a device that allows wireless devices to connect to a wired network using Wi-Fi, bluetooth or related standards.

NETWORK DEVICES : 

NETWORK DEVICES NETWORK REPEATER: It retimes and regenerates the signals to proper amplitudes and sends them to the other segments. GATEWAY: It can translate information between different network data formats or network architectures. NETWORK ROUTER: It is used to route data packets between two networks.

NETWORK DEVICES : 

NETWORK DEVICES BRIDGE: A bridge reads the outermost section of data on the data packet, to tell where the message is going. It reduces the traffic on other network segments.