Number system & Browsing Safely

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Across
  1. 2. ____ was India's greatest mathematician and astronomer who introduced the concept of 0(zero).
  2. 5. harassing using information technology in a deliberate manner
  3. 7. the base of octal number system
  4. 9. befriending children on social media to facilitate online or physical sexual abuse
  5. 10. 4bits=1_________
  6. 16. invented modern binary system
  7. 18. the rightmost digit of a number is called the_______________ Significant digit.
  8. 19. criminal activity intended to harm anyone using computer and internet
  9. 20. McAfee,quick heal,are examples of_______software
Down
  1. 1. full form of otp
  2. 3. illegal entry into a computer system or network
  3. 4. helps in preventing unauthorized access by blocking unsolicited communication
  4. 6. the number of digits used in a number system is known as____
  5. 8. hoaxing or misleading
  6. 11. cyber_________is a crime in which the victim is attacked first and then forced to pay money to stop further attacks
  7. 12. 3B is a hexadecimal number(t/f)
  8. 13. a number system that consists of the digits0-9 and the letters A-F
  9. 14. a computer understandable language
  10. 15. a number system consisting of digits 0-9,with the base 10.
  11. 17. abbreviation of vital information resources under sieze