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In this chapter, you learned how
subnet masks, VLSMs, private addressing, and network address
translation could enable more efficient use of IP addresses. You
learned that hierarchical addressing allows for efficient allocation
of addresses and reduced number of routing table entries. VLSMs,
specifically, provide the capability to include more than one subnet
mask within a network and the capability to subnet an already
subnetted network address. Proper IP addressing is required to
ensure the most efficient network operations.
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