Consider a computer system with three users, Alice, Bob and Cindy. Alice owns the file alicerc, and Bob and Cindy can read it. Cindy can read the write the file bobrc, which Bob owns, but Alice can only read it. Only Cindy can read and write the file cyndyrc, which she owns. Assume that the owner of each of these files can execute it.

a. Create the corresponding access control matrix.

b. Cindy gives Alice permission to read cyndyrc, and Alice removes Bob's ability to rad alicerc. Show the new access control matrix.

Which of the following kinds of programs displays an online advertisement in a banner or pop-up window on webpages, email, or other internet service? e

The total revenues for a company are $150,223 and the total expenses were 125,766. if you are calculating the net income, which of these spreadsheets would you use? insert a spreadsheet with $150,223 in cell b2 and 125, 766 in cell b3. enter a formula =b2-b3. the formula should be showing in the formula bar. insert a spreadsheet with $150,223 in cell b2 and 125, 766 in cell b3. enter a formula =b2+b3. the formula should be showing in the formula bar. insert a spreadsheet with $150,223 in cell b2 and 125, 766 in cell b3. enter a formula =b2/b3. the formula should be showing in the formula bar. insert a spreadsheet with $150,223 in cell b2 and 125, 766 in cell b3. enter a formula =b2*b3. the formula should be showing in the formula bar.

Create a word problem that involves calculating the volume and surface area of a three-dimensional object. cube: surface area 6 s2 , volume s3