The event occurs just before a form closes.

Which of the following is the better choice when attempting to add a new entry to a dictionary where the search key already exists?

a. replace the existing entry with a new entry b. crash the program c. throw an exception d. deny the attempt

CISC ISAs do not __________.

a) incorporate single instructions that perform complex functions b) take the same amount of time to execute most or all instructions c) contain variable-sized instructions d) contain a small number of registers