Question #1: Name three layers of Campus hierarchical model.

Question #2: Describe with your own words what do you think that Highly-Available network means. How would you design datacenter to be Highly-Available? (no money limit, be creative, consider all aspects)

Question #3: Please read this: http://www.9tut.com/hot-standby-router-protocol-hsrp-tutorial and according configuration below decide which router will be selected as active and why. 

R1 configuration:
interface Vlan1
 ip address 192.168.1.2 255.255.255.0
 standby 1 ip 192.168.1.1
 standby 1 priority 150

R2 configuration:
interface Vlan1
 ip address 192.168.1.3 255.255.255.0
 standby 1 ip 192.168.1.1
 standby 1 priority 200