Across
- 4. establishes a barrier between a trusted internal network and untrusted external network
- 7. a process that reduces the amount of fragmentation
- 9. you use this to click on something
Down
- 1. gathers information about a person or organization
- 2. system a software that manages computer hardware
- 3. a collection of data or computer instructions that tell the computer how to work
- 5. Clean up junk, duplicate files, erase tracks and protect sensitive data
- 6. you use this to type words
- 8. stops viruses coming onto the computer