have you tried www.khanacademy.org
Network topology is the arrangement of the elements of a communication network. Network topology can be used to define or describe the arrangement of various types of telecommunication networks, including command and control radio networks, industrial fieldbusses and computer networks.
Advantages:
It is easy to handle and implement.
It is best suited for small networks.
Disadvantages:
The cable length is limited. This limits the number of stations that can be connected.
This network topology can perform well only for a limited number of nodes.
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Technology becomes assistive technology C. WHEN SOMEONE WITH A DISABILITY OR LIMITATION USES IT TO HELP HIM OR HER DO SOMETHING.
Assistive technology is defined as any technological item, equipment, software or product system that is used to assist individuals with disabilities to increase, improve, and maintain their functional capabilities.
Is there a picture????????