____ is ideal in situations when you want a copy of your most recent work stored in a location that you can access in the event that your main hard drive fails.
A. System Restore
B. Synchronization
C. AutoRecovery
D. System Image Recovery
Answer: B
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We studied the rand() and srand(int) library functions. The function rand() returns pseudorandom numbers. What does pseudorandom mean? What is srand for?
a) Repeated calls to the rand() function returns a string of numbers that are mostly different but they aren’t random in any sense. b) Pseudorandom numbers are things that resemble numbers but aren’t numbers. c) In scientific use the word pseudo means resembling. A pseudorandom number sequence resemble random number sequence, but are not strictly random. d) The function srand(arg) is a helper function for rand(). It must be called with the same argument, just before rand(), every time rand() is called. e) The function srand(arg) is the seeding function for rand(). Each call to s srand(arg) with a different argument enables a sequence of calls to rand() to generate a different sequence of pseudorandom numbers.
Effective data ________ is achievable only if prior thought is given to what the source document should contain.
A) capture B) entry C) feedback D) analysis
Which of the following are the correct preprocessor commands necessary to prevent multiple inclusions of header files? If there is an answer here that works to prevent multiple inclusion, carefully describe how it works in the explanation.
a) ``` #include “header.h” ``` b) ``` #define HEADER_H #ifndef HEADER_H //declarations for header.h go here #endif ``` c) ``` #ifndef HEADER_H #define HEADER_H // declarations for header.h go here #endif ``` d) ``` #ifndef HEADER_H //declarations for header.h go here #endif ```
A computer-generated report includes inventory information for 220 items. The information for each item is given on a separate line. If 50 lines will fit on a page, how many pages will it take to print the report?
Identify the data, condition, and unknown (Polya's components).