There are two questions that need to be answered in the Week 5 Discussion. Please create a new thread for each discussion topic: 1. Select three layers of the OSI model. Describe what the layers do,

There are two questions that need to be answered in the Week 5 Discussion.  Please create a new thread for each discussion topic: 1.  Select three layers of the OSI model.  Describe what the layers do, any specific protocols that are utilized in that layer, and why those layers are important.