Of the following choices, what indicates the primary purpose of an intrusion detection system (ids)?
(a) detect abnormal activity
(b) diagnose system failures
(c) rate system performance
(d) test a system for vulnerabilities

Idon understand these and need some ! ?

10. when you create a pivottable, you need to specify where to find the data for the pivottable. is it true

Suppose s, t, and w are strings that have already been created inside main. write a statement or statements, to be added to main, that will determine if the lengths of the three strings are in order by length, smallest to largest. that is, your code should determine if s is strictly shorter than t, and if t is strictly shorter than w. if these conditions hold your code should print (the boolean value) true. if not, your code should print false. (strictly means: no ties) example: if s, t, and w are "cat", "hats", and "skies" your code should print true - their lengths are 3-4-5; but if s, t, and w are "cats" "shirt", and "trust", then print false - their lengths are 4-5-5 enter your code in the box below