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I need help with the question 7 and 8 7. What is the role of the Domain Name System (DNS)? (Our textbook gives a good

I need help with the question 7 and 8 image text in transcribed
7. What is the role of the Domain Name System (DNS)? (Our textbook gives a good explanation, or read here or here.) 8. What is the role of a network switch? (note: Wikipedia gives a better description of a network switch than does our textbook.) Be sure to explain in terms you understand. Updated February 9, 2019

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Advances In Databases 28th British National Conference On Databases Bncod 28 Manchester Uk July 2011 Revised Selected Papers Lncs 7051

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