How many subnet bits are used for the IP address/mask 172.16.240.67/24?

Where does a form header appear?

A) Once, at the top of the form B) At the left of each page C) Once, at the left of the form D) At the top of each page

To open a file with a user supplied name, you would need to store the name in a variable. If the file name was to have no more than 20 characters in it, which would be an appropriate declaration of the file name variable?

a. char filename; b. char filename(20); c. char filename[20]; d. char filename[21];