Which of the following statements are true? (choose all correct answers.)
a. you can create more than one undo tablespace
b. undo_management=yes will let oracle automatically manage undo tablespace
c. you can change the value of undo_management dynamically after the database starts.
d. you can use alter system set to switch between undo tablespaces

The file sales data.xlsx contains monthly sales amounts for 40 sales regions. write a sub that uses a for loop to color the interior of every other row (rows 3, 5, etc.) gray. color only the data area, columns a to m. (check the file colors in excel.xlsm to find a nice color of gray.)

Asequential circuit contains a register of four flip-flops. initially a binary number n (0000 ≤ n ≤ 1100) is stored in the flip-flops. after a single clock pulse is applied to the circuit, the register should contain n + 0011. in other words, the function of the sequential circuit is to add 3 to the contents of a 4-bit register. design and implement this circuit using j-k flip-flops.

What is the digital revolution and how did it change society? what are the benefits of digital media?