A thread enters the waiting state when ________.
a) it momentarily has no work to perform
b) it cannot perform further operations until it receives a signal from another thread
c) it must wait for the completion of an I/O request
d) all of the above
b) it cannot perform further operations until it receives a signal from another thread
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A(n) ____ diagram shows any special events that are required to make the transition from one sketch to the next.
A. event B. object C. transition D. state
Answer the following statements true (T) or false (F)
1. The computer is a tool used by so many professionals that it cannot be easily categorized. 2. Without programmers, the users of computers would have no software, and, without software, computers would not be able to do anything. 3. The contents of a variable cannot be changed while the program is running. 4. Java source files end with the .class extension. 5. When an object's internal data is hidden from outside code and access to that data is retricted to the object's methods, the data is protected from accidental corruption.
The__________ is a technique in which an encryption algorithm is used multiple times.
Fill in the blank(s) with the appropriate word(s).
If you need to undo an action, press ____ (in Windows).
A. [Alt][U] B. [Alt][Z] C. [Ctrl][U] D. [Ctrl][Z]