Which two characteristics make RIPv2 preferable for use over RIPv1? (Choose two.)
A.
RIPv2 supports Variable Length Subnet Masks (VLSM)
B.
RIPv2 uses a link state algorithm (LSA) to calculate link cost
C.
RIPv2 uses a bandwidth metric to choose the preferred route
D.
RIPv2 authenticates routing updates
E.
RIPv2 uses Route Poisoning to prevent routing loops