What are the two components of a style rule? Describe them.
What will be an ideal response?
A style rule is composed of two parts: a selector and a declaration. The style rule expresses the style information for an element. The selector determines the element to which the rule is applied. Selection is the key to working with CSS. The declaration, contained within curly brackets, details the exact property values.?
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Answer the following statements true (T) or false (F)
1. Viewing each layer of abstraction as an independent black box is useful because it allows you to work with the layers one at a time. 2. The operating system’s user interface, sometimes called the shell, provides a mechanism for the user and application programs to communicate directly with the hardware. 3. The operating system’s file management function, sometimes called the file system, incorporates routines that allow the user or programmer to create, delete, modify, and manipulate files logically, by name. 4. The operating system’s device management function is responsible for efficiently managing the system’s memory and processor. 5. Processor (or process) management is concerned with efficiently managing the processor’s time and main memory space.
Match the following Windows 7 programs or features to their descriptions:
I. Snap A. automatically places a window on the side of the desktop II. Aero Flip 3D B. invite someone to help with a computer issue III. Remote Assistance C. arranges all open windows in a stack IV. Search box D. use to record to-do lists, phone numbers, or other info V. Sticky Notes E. locate files, folder, programs or e-mail messages
?Identify the letter of the choice that best matches the phrase or definition.
A. ?It is essentially the file format that is identified by a file extension. B. ?It is nested within a single audio section to provide several versions of the same media file. C. It starts the performance of a media clip as soon as it is loaded by the browser. D. ?It is the original audio format for Windows PCs, which is commonly used for storing uncompressed audio, making it impractical for all but the shortest audio clips. E. ?It acts as a fallback option for browsers that do not support the HTML5 multimedia elements by adding theembedelement. F. ?It is the industry standard for high-definition video streams. G. ?It contains text values that are passed to the player to control the behavior and the content of a movie. H. ?It is a brief text description that is synced to specified time points within the media clip. I. ?This attribute is applied to thevideoelement to define a video's preview image. J. ?This attribute specifies that the audio output should be suppressed.
____________ is an operating system.
a. Java b. C++ c. Windows d. Visual Basic e. Ada