CCNA Cisco Certified Network Associate (#762)

Section: Version 2.0

Which statement is true, as relates to classful or classless routing?

Automatic summarization at classful boundries can cause problems on discontinuous subnets
EIGRP and OSPF are classful routing protocols and summarize routes by default
RIPv1 and OSPF are classless routing protocols
Classful routing protocols send the subnet mask in routing updates