Which two statements about classful or classless routing protocol operations are true? (Choose two.)
A. Classful routing protocols do not send subnet mask information with theirrouting updates.
B. Variable-length subnet masks are supported when using classful routing protocols.
C. Examples of classless routing protocols include RIPv1, EIGRP, OSPF, andIS-IS.
D. Classful routing protocols do not support discontiguous subnets.
Answer:A
Which two statements about classful or classless routing protocol operations are true? (Choose two.)
A. Classful routing protocols do not send subnet mask information with theirrouting updates. B. Variable-length subnet masks are supported when using classful routing protocols. C. Examples of classless routing protocols include RIPv1, EIGRP, OSPF, andIS-IS. D. Classful routing protocols do not support discontiguous subnets.