need answers for question 1 and 2 only

NOTE: For this workshop you are to do some investigations about some of the systems available for communication. Read lectures from week 1&2, and conduct online research before answering following questions. Write answer in your own words. Do not copy and paste. Site references in your text if used for the preparation of answers and give list of references using WSU Harvard referencing style. For more information on referencing and paraphrasing refer Integration Module available on vUWS.

NOTE: Discuss and present your answers in the next class (week 3).

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