Data Communications. Chapter 1 – Data Communications, Data Networks, and the Internet. Eighth Edition by William Stallings. Data Communications, Data Networks, and the Internet.
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Chapter 1 – Data Communications, Data Networks, and the Internet
by William Stallings
Types of connections: point-to-point and multipoint
Categories of topology
A fully connected mesh topology (five devices)
A star topology connecting four stations
A bus topology connecting three stations
A ring topology connecting six stations
A hybrid topology: a star backbone with three bus networks
The protocol/medium/signal/all the above is the physical path over which message travels.
The information to be communicated in a data communications system is the medium/protocol/message/transmission.
Frequency of failure and network recovery time after a failure are measures of the performance/reliability/security/feasibility of a network.