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When collection of various computers seems a single coherent system to its client, then it is called

A. computer network

B. distributed system

C. both (a and (b

D. none of the mentioned

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  15. _____________________ are set up to fulfill service ordering, service assurance, and billing functions.
  16. ----------------is a static algorithm in which every incoming packet is sent out on every outgoing line…
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  20. Which of the following can be used to transfer files from a Unix server?
  21. Which of the following is a simplex protocol?
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  26. In an authentication using symmetric keys, if 10 people need to communicate, we need _______ keys.
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