A penetration tester conducted a discovery scan that generated the following:

Which of the following commands generated the results above and will transform them into a list of active hosts for further analysis?

A company hired a penetration tester to do a social-engineering test against its employees. Although the tester did not find any employees' phone numbers on the company's website, the tester has learned the complete phone catalog was published there a few months ago.
In which of the following places should the penetration tester look FIRST for the employees' numbers?

Which of the following commands will allow a penetration tester to permit a shell script to be executed by the file owner?

A penetration tester writes the following script:

Which of the following objectives is the tester attempting to achieve?

A penetration tester gains access to a system and establishes persistence, and then runs the following commands:
cat /dev/null > temp
touch -r .bash_history temp
mv temp .bash_history
Which of the following actions is the tester MOST likely performing?