Addressing and Numbering + Routing Protocols ?

“Addressing and Numbering.” Please respond to the following:  

· Discuss how you would develop an addressing and naming model in an environment that has 10 departments in a 1000 employee organization, are equally separated by geography, and use a common data center of 20 backend enterprise servers. How would you utilize hierarchical addressing in this scenario?

“Routing Protocols.” Please respond to the following:   

· Compare and contrast classless with classful routing. Support and cite your response with real-world examples.