Question: (15 marks) Assume that OSPF protocol is already configured in the following topology: FE1/0 10.0.1.1/24 10.1.0.0/24 2 R3 R2 10.1.1.0/24 10.1.2.1/24 .2 F01/0 FEO/O / FEO/O FE2/0 10.1.3.1/24 FE1/0 FE1/0 10.0.0.0/24 R1 FED/O FEO/O FEB/0 10.0.3.1/24 F12/0 10.0.2.1/24 RS FE2/0 10.1.3.2/24 FE3/0 10.0.3.2/24 1. What is the result of configuring the interface F0/1 on router R2 as a passive interface. 2. What is the benefit of configuring loopback address interface on R4 3. What will happen if we configure R3 and R4 as a backbone routers, and R1 as a normal router, and R2 and R5 as a ABRS routers