A _____ website structure is appropriate if visitors should view the webpages in a specific order, as in the case of training material in which users need to complete Training module 1 before attempting Training module 2.?

The ___________ method is used to insert an item into an ArrayList.

a. insert b. add c. store d. putItem

In JDK 1.5, analyze the following code.

``` Line 1: Integer[] intArray = {1, 2, 3}; Line 2: int i = intArray[0] + intArray[1]; Line 3: int j = i + intArray[2]; Line 4: double d = intArray[0];``` a. It is OK to assign 1, 2, 3 to an array of Integer objects in JDK 1.5. b. It is OK to automatically convert an Integer object to an int value in Line 2. c. It is OK to mix an int value with an Integer object in an expression in Line 3. d. Line 4 is OK. An int value from intArray[0] object is assigned to a double variable d.