Which of the following routing protocols support the use of VLSM (Variable Length Subnet Masking)? (Select three)

A. RIPv1
B. EIGRP
C. OSPF
D. IGRP
E. RIPv2
Answer: B, C, E

Explanation:
Static routing, OSPF, IS-IS, EIGRP, BGP, and RIP version 2 all support VLSM.

Incorrect Answers:
A, D. RIPv1 and IGRP do not support VLSM.