NETWORK TOPOLOGIES NETWORK DEVICES. TOPOLOGY The physical topology of a network refers to the...
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![Page 1: NETWORK TOPOLOGIES NETWORK DEVICES. TOPOLOGY The physical topology of a network refers to the configuration of cables, computers, and other peripherals.](https://reader035.fdocuments.in/reader035/viewer/2022062301/5697bfbb1a28abf838ca0dd5/html5/thumbnails/1.jpg)
NETWORK TOPOLOGIES
NETWORK DEVICES
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TOPOLOGY
The physical topology of a network refers to the configuration of cables, computers, and other peripherals.
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Main Types of Physical
Topologies:
CONTINUE….
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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
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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.
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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.
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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.
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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.
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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
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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.
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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.
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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.