A user reports that they walked away from their laptop for 30 minutes and when they came back the screen was very dim. The user tried moving the mouse and increasing the brightness setting, but neither worked. Which of the following should the technician do FIRST?
A. Plug in an external monitor to test the video card.
B. Run a check disk scan to verify there is no corruption.
C. Check if the laptop is now on battery power.
D. Have the LCD screen replaced with a known good screen.
Answer: C. Check if the laptop is now on battery power.
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a) testing for infinite loops. b) testing for exceptions. c) resolving exceptions. d) testing code.
Which of the following are potential problems when we use the delete operator on a pointer variable?
a) inaccessible heap memory b) dangling pointers c) uninitialized pointers d) NULL pointers
Selection lists are used for long lists of options, usually appearing in a(n) ____________________ list box.
Fill in the blank(s) with the appropriate word(s).
Polymorphism helps eliminate ______ logic.
What will be an ideal response?