I have 2 question, please clarify em for me. ty.

i know normally would see a setup like this:
int S0
ipaddress 157.89.1.3 255.255.0.0
int e0
ip address 208.1.1.4 255.255.255.0


configuring rip:

router rip
net 157.89.0.0
net 208.1.1.0

my question is this i see the pattern and im seeing that the network will be left at zeros in some section due to the default subnet class rules.
examples A 255.0.0.0 B 255.255.0.0
C 255.255.255.0

On my exams i have seen the router rip command . but on my exam i will not see Interfaces with subnetmasks.

All i do see is:
Router Rip
Net
Net

does the configuration above automatically fall into the default subnetmask values.

lets say i had 193.2.2.1 and 10.1.1.5

does that mean that i would use

Net 193.2.2.0 and Net 10.0.0.0, if so can someone explain why?

Thank you

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Yes, RIP version 1 is a classful routing protocol and only knows classful masks like you posted.

Does this help?

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