Ipv4 is connectionless or connection oriented?
It's neither. IP is a transport layer protocol.
Connection/Connectionless imply the network layer.
Look up the OSI model.
Actually you are correct, but it doesn't just go that far. The
definition of connectionless is the ability to send and receive
packets without already establishing connectivity between two or
more specific entities. IPv4 is connectionless, meaning if I send
information via IPv4 I can just send the packets without having to
do much more than click "return".
Hope this helps.