Volatile data means data that changes rapidly and may be lost when the machine that holds it is powered down.
a. true
b. false
Answer: a. true
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Answer the following statements true (T) or false (F)
1. The amount of data that moves between the processor and memory at one time depends on the application. 2. Cache memory is a form of secondary storage. 3. The processor, often called the central processing unit (CPU), is the component that manipulates data. 4. A processor can do nothing without a program to provide control; whatever intelligence a computer has is derived from software, not hardware. 5. The processor manipulates data stored in memory under the control of a program stored in memory.
Design a file security mechanism that alleviates the need for the “set user ID” feature.
What will be an ideal response?
_________ uses a direct connection and has speeds similar to Digital Subscriber Line (DSL) access, but it is more expensive than both DSL and cable and almost always has a data cap. A. Fixed wireless Internet access B. Conventional dial-up Internet access C. Satellite Internet access D. Mobile wireless Internet access
Fill in the blank(s) with the appropriate word(s).
What can a programmer do to prevent side effects from cloning mutable objects?
A. create a deep copy using a for loop B. create a shallow copy using a type conversion C. create a deep copy using a type conversion D. use the assignment operator in stead of a type conversion