Unit testinguncovers any defects in the interface between individual components of an information system.

A technician performed a clean install of Windows XP on a laptop and finds that the Bluetooth on/off switch is not working. Which of the following will BEST resolve this issue?

A. Replacing the keyboard B. Installing service pack 3 C. Reinstalling the operating system with Windows XP Media Center D. Installing the Bluetooth stack/driver

Suppose that a pointer called start points to the first node in a linked list, and each node is made from a Node struct having an info data member and a next data member. To access info in the first node, we can use the code:

A. ptr->info B. ptr = ptr->info; C. info->start D. start->info