If an app needs to perform a derived-class-specific operation on a derived class object reference by a base class variable, the app must first cast the base class reference to a derived class reference through a technique known as _________.

An easy way to switch between the Designer and the code editor is to click the ____________ for the desired window. This only works if both the code file and designer file have already been opened.

a. icon b. tab c. button d. bounding box

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

1. Application of special effects, such as reverb, to a noisy audio should be done before the noise reduction. 2. There is no sampling and quantization involved in capturing motion in digital video. 3. The pixel per inch (ppi) is an important attribute for video resolution and should be set correctly when working with digital video in video editing programs. 4. The pixel per inch (ppi) is an important attribute for video resolution and should be set correctly when working with digital video in video editing programs. 5. The timecode representing the 35th frame is either 00:00:00:35 or 00;00;00;35.