What is a user agent? Give some examples. What purpose does it serve in enhancing Web accessibility?
What will be an ideal response?
A user agent is any software that accesses and presents Web content. Examples of user agents include desktop graphical browsers, test browsers, multimedia players, mobile phone displays, PDAs, plug-ins and assistive software such as screen readers, screen magnifiers and voice recognition software. User agents enhance Web accessibility by offering flexibility to a user. A user with special needs can choose the user agent that provides the best accessibility to the Web for that particular user.
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Which operator can be used in string concatenation?
a. * b. += c. ++ d. =+
Embedded computers are standalone products that have many functions.
Indicate whether the statement is true or false.
As shown in the accompanying figure, all Office programs have a ____ tab, which contains the more frequently used commands.
A. Gallery B. Navigation C. Home D. Quick Options
The secondary key
a. Is unique. b. May be used to access records. c. Is used within the record only. d. Is the same as the primary key.