Hello, I'm preparing for the exam and I'm a bit confused about the numbers, I've created this table: I'm not sure if numbers are right or if they should be increased/decreased by 2 in some table cells. What's the number of networks for class A, 128 o...

Good morning,I'm new to networks and I've created this topology [attachment].On R1 "ping 4.4.4.4" / "ping 4.4.4.4 source 1.1.1.1" doesn't work.Any tip why? What am I missing?R1ip route 4.4.4.4 255.255.255.255 e0/0ip route 4.4.4.4 255.255.255.255 s1/0...