Tom teaches in a high school. He wishes to sort a spreadsheet containing students' marks in various subjects by descending order of total marks. While sorting the spreadsheet, what do you do before clicking the Sort option from the menu?
OA
filter the data to sort
OB.
arrange the data alphabetically
O c. select the data to sort
OD.
look up the data to sort

Suppose you are an ad-serving company and you maintain a log of cookie data for ads you serve to the web pages for a particular vendor (say amazon). a. how can you use this data to determine which are the best ads? b. how can you use this data to determine which are the best ad formats? c. how could you records of past ads and ad clicks to determine which ads to send to a given ip address? d. how could you use this data to determine how well the technique you used in your answer to part c was working? e. how could you use this data to determine that a given ip address is used by more than one person? f. how does having this data give you a competitive advantage vis-à-vis other ad-serving companies?