The Internet and the DNS

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Across
  1. 3. the name of one of Mr. Schmurr's cats
  2. 5. every packet on the internet has a sender and a ........
  3. 9. DNS is the abbreviation for....
  4. 10. the topology with multiple connections between devices on the internet
  5. 12. the numbers that identify computers on the internet
  6. 14. the small pieces that messages on the internet are divided into
  7. 15. the number system computers use to communicate
Down
  1. 1. having extra routers and paths on a network
  2. 2. the two digits in the base two number system
  3. 4. the name of a website such as code.org or google.com
  4. 6. a network that still works even if routers go down is fault ......
  5. 7. the number of cats Mr. Schmurr has
  6. 8. the abbreviation for binary digit
  7. 11. the name of one Mr. Schmurr's cats
  8. 13. the device that sends ip packets on the next step of the path to their destination
  9. 14. a set of rules