The abstract classes of Stream, TextWriter, and TextReader are defined for dealing with files in the ____ namespace.

A. System.IO
B. System.Files
C. System
D. System.Stream

Answer: A

Computer Science & Information Technology

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What does this program do?

``` // ex08_13.cpp // What does this program do? #include using namespace std; void mystery1(char*, const char*); // prototype int main() { char string1[80]; char string2[80]; cout << "Enter two strings: "; cin >> string1 >> string2; mystery1(string1, string2); cout << string1 << endl; } // What does this function do? void mystery1(char* s1, const char* s2) { while (*s1 != '\0') { ++s1; } for (; (*s1 = *s2); ++s1, ++s2) { ; // empty statement } } ```

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Which of the following are uses of the ping utility?  (Choose all that apply.)

A. testing the host connection B. testing access over a WAN connection C. testing the HTTP protocol D. testing TCP port 23

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An error commonly made by beginning programmers is to forget that array subscripts start with the integer 1.

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

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

1. It is not possible to connect I/O controllers directly onto the system bus. 2. The method of using the same lines for multiple purposes is known as time multiplexing. 3. Timing refers to the way in which events are coordinated on the bus. 4. With asynchronous timing the occurrence of events on the bus is determined by a clock.

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