| List II (Descriptions) | ||
---|---|---|---|
A | Free software | I | Users have the freedom to run, copy, change or adapt free software |
B | Freeware | II | It is a software a user can download from the internet free of charge |
C | shareware | III | Users are allowed to try out some software free change for a trial period |
D | Firewall | IV | Helping to prevent viruses or jackers entering the user computer(or internet network) |