devry netw410 enterprise network design

I need 7 question answer all in like  a paragraph at least is about network those 7 question I need it completed by two hours from now so by like 8:30 your help will be greatly appreciated.

1. (TCO 1) What is the function of the access layer? Discuss the equipment used at this layer, the criteria used to select the equipment, the size of the network that would use this layer, and whether redundancy is typically used here.  Question 2. 2. (TCO 2) In the top-down network design model, why are the organizational and business goals and constraints listed first?  Question 3. 3. (TCO 3) What are the network application characteristics and considerations?  Question 4. 4. (TCO 5) Is the Internet viable as WAN backup technology? What are its advantages and disadvantages? What methods are used to connect networks over this media?  Question 5. 5. (TCO 6) What are some of the factors that affect voice quality during VOIP calls?  Question 6. 6. (TCO 7) What are some of the common threats and risks?  Question 7. 7. (TCO 4) What are the considerations for the use of STP?        

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