What does VLSM allow a network administrator to do?

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#1

What does VLSM allow a network administrator to do?

  1. utilize one public IP address to translate multiple private addresses
  2. utilize multiple different subnet masks in the same IP address space*
  3. utilize one dynamic routing protocol throughout the entire network
  4. utilize multiple routing protocols within an autonomous system
  5. utilize one subnet mask throughout a hierarchical network