Glossary

 Heuristic
Using experience-based techniques for problem-solving.
 Hierarchical Address Space
Individual IP addresses are ‘flat’ addresses. Each address is unique but it does not say anything about where the address is relative to any other address. They are usually allocated and assigned as ranges of addresses. Further sub allocations and assignments can be made from allocations. This builds an administrative hierarchy within the address space, even though the address space itself is not hierarchical.