Across
- 1. Vital software for viewing Internet sites
- 6. System or software utility designed to stop unauthorised access to a private network
- 7. messages transferred Electronically, not through the letterbox
- 9. The physical components of the computer system
- 12. A security measure that checks user identity
- 14. Small program that causes problems
- 15. Not connected
- 17. Worth trying when you get stuck
Down
- 2. Aimless exploration
- 3. Network maintained by a company that is only available to its staff or authorised users
- 4. combination of Letters and numbers
- 5. Approximately a billion bytes
- 8. Find information
- 10. Only do this if you don't want a file
- 11. Shortcuts to sites that you visit regularly
- 13. Good for producing charts and graphs
- 16. like our nervous system