Use the drop-down menus to explain how to set up a lookup field to use a combo box control with a list of options. 1. Open a table in Design view, and right-click a field. 2. Select Change To in the drop-down menu, then select . 3. On the Data tab of the , make a number of choices. 4. For the Row Source Type, choose . 5. For Limit to List, select . 6. For Row Source, click the ellipsis and enter the values in the dialog box that opens. 7. Close the Property Sheet, and save the form.

Write a program that prompts the user to input a string. the program then uses the function substr to remove all the vowels from the string. for example, if str = "there", then after removing all the vowels, str = "thr". after removing all the vowels, output the string. your program must contain a function to remove all the vowels and a function to determine whether a character is a vowel.

1. you have a small business that is divided into 3 departments: accounting, sales, and administration. these departments have the following number of devices (computers, printers, etc.): accounting-31, sales-28, and administration-13. using a class c private network, subnet the network so that each department will have their own subnet. you must show/explain how you arrived at your conclusion and also show the following: all available device addresses for each department, the broadcast address for each department, and the network address for each department. also, determine how many "wasted" (not usable) addresses resulted from your subnetting (enumerate them).

Need ! will choose brainliest! discuss the role of abstraction in the history of computer software.