Computer Networking
A central computer surrounded by one or more satellite computers is called a

All of these
bus network
None of these
star network
ring network

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Computer Networking
MAC is

None of these
a method of determining which device has access to the transmission medium at any time
a very common bit-oriented data link protocol issued to ISO.
network access standard for connecting stations to a circuit-switched network
a method access control technique or multiple-access transmission media

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Computer Networking
Why does the data communication industry use the layered OSI reference model?1. It divides the network communication process into smaller and simpler components, thus aiding component development, design, and troubleshooting.2. It enables equipment from different vendors to use the same electronic components, thus saving research and development funds.3. It supports the evolution of multiple competing standards and thus provides business opportunities for equipment manufacturers.4. It encourages industry standardization by defining what functions occur at each layer of the model.

3 only
1 only
2 and 3
1 and 4

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