SolStd25 - and the root node. 9. Caching reduces the search...

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1 CHAPTER 25 Domain Name System (DNS) Solutions to Odd-Numbered Review Questions and Exercises Review Questions 1. When the name space is large, searching a name in hierarchical structure (tree) is much faster that searching it in a flat structure (linear). The first can use a binary search; the second needs to use a sequential search. 3. Generic domain , country domain , and inverse domain . 5. In recursive resolution the client queries just one server. In iterative resolution the client queries more than one server. 7. A PQDN is a domain name that does not include all the levels between the host
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Unformatted text preview: and the root node. 9. Caching reduces the search time for a name. 11. DDNS is needed because the many address changes makes manual updating ineffi-cient. Exercises 13. a. FQDN b. FQDN c. PQDN d. PQDN 15. Remembering a name is often easier than remembering a number. 17. There are three labels but four levels of hierarchy since the root is considered a level. 19. This is a generic domain . 21. The number of question sections and answer sections must be the same. The rela-tionship is one-to-one . 2...
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This note was uploaded on 09/16/2010 for the course SETAS ETEC301 taught by Professor Multiple during the Winter '09 term at Centennial College.

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SolStd25 - and the root node. 9. Caching reduces the search...

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