Why is continual user involvement a useful way to discover system requirements? under what conditions might it be used? under what conditions might it not be used?

Using the list, you can select the number of photos that will appear on each slide. a. theme b. frame shape c. pictures in album d. picture layout

Why is it uncommon for users to perform searches directly in database tables? a.)users are discouraged from interacting directly with tables because they might confuse tables with spreadsheets. b.) users are discouraged from interacting directly with tables because this may result in unintended changes to source data. c.)users do not have the technical skills required to perform searches directly in database tables. d.)users do not have the permissions required to perform searches directly in database tables.

Why does the pc send out a broadcast arp prior to sending the first ping request