Because ________, asynchronous Tasks are frequently used in GUI apps that invoke web services (or perform network communication in general) to ensure that the apps remain responsive.

a) there can be unpredictably long delays while awaiting a web-service response
b) synchronous tasks don’t work well in GUI apps
c) web services are not designed to work with synchronous Tasks
d) memory is limited in GUI-based web services


a) there can be unpredictably long delays while awaiting a web-service response

Computer Science & Information Technology

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Case-based Critical Thinking QuestionsCase 12-2Rosalind wants to add attribute declarations to her DTD, and she turns to you for information about the possible attribute types. Rosalind wants to define a required attribute called "semester" of an element named "course." She wants to ensure that this attribute takes on one of three values: fall, spring, or summer. Which type of attribute should she use?

A. CDATA B. an enumerated type C. a tokenized type D. a value-list type

Computer Science & Information Technology

Programming style is important, because ______________.

a. a program may not compile if it has a bad style b. good programming style can make a program run faster c. good programming style makes a program more readable d. good programming style helps reduce programming errors

Computer Science & Information Technology

The best approach to the two color models is to keep them interchangeable in your mind.

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

Computer Science & Information Technology

Linux has firewall capabilities built-in the operating system

Indicate whether the statement is true or false.

Computer Science & Information Technology