Important number systems

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Across
  1. 2. Binary number system
  2. 3. Octal number system
  3. 4. Decimal number system
  4. 7. Domain Name Systems (DNS)
  5. 9. Simple Mail Transfer Protocol (SMTP)
Down
  1. 1. Hexadecimal number system
  2. 2. Simple network management protocol (SNMP)
  3. 5. File Transfer Protocol (FTP)
  4. 6. Microsoft Active Directory Protocol (MADP)
  5. 8. Route Access Protocol (RAP)