Please try and provide an explanation

Which of the following is a protocol that uses layer-3 addresses and can be carried over multiple networks? Invalid protocol Counted protocol Routed protocol All of the above Which of the following configurations will enable RIP routing for the 10.20.30.0 network? Router rip; network 10.0.0.0 Router rip; network 10.20.30.0.255.255.255.0 Router rip 10; network 10.0.0.0 255.255.255.0 Router rip; network 192.168.3 0 IP router rip; network 10.0.0.0 To enter privileged EXEC, you can type the command ______________ at the user mode prompt activate open enable enter