Which two statements are true regarding the function of the RIPv1 routing updates? (Choose two).

updates are broadcast only when there are changes to the topology
updates are broadcast at regular intervals
broadcast are sent to 0.0.0.0
broadcasts are sent to 255.255.255.255
updates contain the entire network topology
only changes are included in the updates

ccna exploration 2 chapter 4 Exam Question And Answers 

Which two statements are true regarding the function of the RIPv1 routing updates? (Choose two).