OSI reference model
1. Distinguish between the 7-layer reference model known as the OSI reference model and the 4-layer reference model known as the internet model or the TCP/IP model.
2. Define and describe the advantages and disadvantages of:
(a) a bus topology,
(b) a ring topology, and
(c) a star topology
3. Distinguish between physical data input and non-physical data input.
Solution:
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