history of the world wide web

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Across
  1. 5. focuses on security of a device
  2. 7. rules and semantics of lower layers
  3. 9. certain presentation of framework in a diagram format
  4. 10. a system mainly used to identify certain sources
  5. 12. focusing on quarries submitted and their replies
  6. 13. it conducts the ability to understand written signatures in digital format
  7. 15. language formed using description logic
  8. 16. the building of better protocols
  9. 18. a combination of xml languages
Down
  1. 1. support for full description
  2. 2. uses digital machines for verification of sources
  3. 3. schemes certain type of documents
  4. 4. presentation represented in higher quality format
  5. 6. a way in which language in form of characters is used
  6. 8. simplification of constraints and taxonomies
  7. 11. a language format containing arranged letters
  8. 14. the unpredictable growth of the internet
  9. 15. works hand in hand with client servers
  10. 17. description of classes involving taxonomies, properties and ontologies
  11. 19. an example of logic rules in between systems