C Answer the following questions. a) Define the term 'computer network'. What are its advantages? b) State the types of computer networks based on the geographical area covered by them c) Write a note on twisted pair and coaxial cables. d) Give the advantages of optical fibre cables. e) What is a bus topology? 0 How is a hub different from a switch? Discuss some common threats to network security. h) What is a firewall? 0 How is microwave transmission different from radiowave transmission?
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Explanation:
A computer network is a set of computers sharing resources located on or provided by network nodes. The computers use common communication protocols over digital interconnections to communicate with each other.
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Explanation:
a computer network is a site of computer sharing resources located on or provided by network nodes . The computer shoes common Communication protocols over digital internet connections to communicate with each other .
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