Use ________ to increase the list level of a bullet point

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

Answer the following statements true (T) or false (F)

1. A linked list uses an extra field in a file to hold the links. 2. Linked lists must always be in order. 3. You need a head pointer and an empty pointer to process linked lists. 4. After adding to and deleting from a linked list, the list must be sorted. 5. A circularly linked list has no end.