System focus is the most current trend in the usability research

Ihave been given the number of guns per 100, and the total firearm-related deaths per 100,000. i have to find the actual number of guns per country and actual number of gun-related deaths. if somebody could show me how to do 1 question, i can finish the rest, i am just confused. tia

Which of the following is not a “fatal four” event?

Once a vulnerability has been identified by nessus, where would you check for more information regarding the identified vulnerability, exploits, and any risk mitigation solution?