10. LANs, MANs, and WANs Illustrated Within the confines of a room or single building Connecting LANs from multiple buildings Commonly connects separate offices from the same organization, whether they are across town or across the world
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17. Bus/Star/Ring Topologies Bus Topology (linear bus) All devices are connected to a central cable, called the bus or backbone. These networks are relatively inexpensive and easy to install for small networks Star Topology All devices are connected to a central device, called a hub. Star networks are relatively easy to install & manage, but bottlenecks can occur because all data must pass through the hub Ring Topology The ring topology connects computers on a single circle of cable. Signals travel around the loop in one direction and pass through each computer acting like a repeater to boost the signal and send it on to the next computer.
18. Hybrid / Wireless Topologies Hybrid Topology Groups of star-configured workstations are connected to a linear bus backbone cable, combining the characteristics of bus and star topologies Wireless Devices are connected by a receiver/transmitter to a special network interface card that transmits signals between a computer and a server---all with an acceptable transmission range
30. Networking Hardware Basics Hubs Connectivity device that retransmits incoming data signals to its multiple ports –Typically used for Star topologies and use twisted pair cabling Repeaters A device used to regenerate a signal—addresses a transmission signal problem called attenuation Bridges Allows large networks to be broken up into segments-segments are connected by a bridge----manages bandwidth Switch Also manages bandwidth on a large network—further divides a network into smaller domains Router Routing device that examines each packet of data it receives and then decides which way to sent it towards its destination
How many of your laptops use wireless connectivity? What are the advantages of wireless connectivity? When you purchase a device does its wireless capabilities play a part in your purchasing decisions? MP3 players are beginning to offer wireless capabilities, will you buy a new MP3 player just to receive the wireless connectivity?
What is the relationship between strategic initiatives such as supply chain management and customer relationship management and e-business networks? The technology component of these initiatives depends on the e-business network to make the initiative successful For example, without an e-business network having a SCM system that can view all areas of the supply chain would be impossible
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