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computer science quiz-Main memory is called

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Question 1;1. Main memory is called ____.;read only memory;random access memory;read and write memory;random read only memory;3 points;Question 2;1. The ____ is the brain of the computer and the single most expensive piece of hardware in your personal computer.;MM;ROM;RAM;CPU;3 points;Question 3;1. The ____ carries out all arithmetic and logical operations.;IR;ALU;CU;PC;3 points;Question 4;1. The ____ holds the instruction currently being executed.;CU;IR;PC;ALU;3 points;Question 5;1. When the power is switched off, everything in ____ is lost.;main memory;secondary storage;hard disks;floppy disks;3 points;Question 6;1. ____ programs perform a specific task.;Application;System;Operating;Service;3 points;Question 7;1. The ____ monitors the overall activity of the computer and provides services.;Central Processing Unit;operating system;arithmetic logic unit;control unit;3 points;Question 8;1. Which of the following is NOT an output device?;monitor;printer;CPU;secondary storage;3 points;Question 9;1. ____ represent information with a sequence of 0s and 1s.;Analog signals;Application programs;Digital signals;System programs;3 points;Question 10;1. A sequence of eight bits is called a ____.;binary digit;byte;character;double;3 points;Question 11;1. The digit 0 or 1 is called a binary digit, or ____.;bit;bytecode;Unicode;hexcode;3 points;Question 12;1. The term GB refers to ____.;giant byte;gigabyte;group byte;great byte;3 points;Question 13;1. ____ consists of 65,536 characters.;ASCII-8;ASCII;Unicode;EBCDIC;3 points;Question 14;1. A program called a(n) ____ translates instructions written in high-level languages into machine code.;assembler;decoder;compiler;linker;3 points;Question 15;1. A program called a(n) ____ combines the object program with the programs from libraries.;assembler;decoder;linker;compiler;3 points;Question 16;1. Consider the following C++ program.;#include;using namespace std;int main();cout < (9.9) evaluates to ____.;9;10;9.9;9.0;3 points;Question 26;1. The length of the string "computer science" is ____.;14;15;16;18;3 points;Question 27;1. Suppose that count is an int variable and count = 1. After the statement count++, executes, the value of count is ____.;1;2;3;4;3 points;Question 28;1. Suppose that alpha and beta are int variables. The statement alpha = --beta, is equivalent to the statement(s) ____.;alpha = 1 - beta;alpha = beta - 1;beta = beta - 1;alpha = beta;alpha = beta;beta = beta - 1;3 points;Question 29;1. Suppose that alpha and beta are int variables. The statement alpha = beta++, is equivalent to the statement(s) ____.;alpha = 1 + beta;alpha = alpha + beta;alpha = beta;beta = beta + 1;beta = beta + 1;alpha = beta;3 points;Question 30;1. Suppose that alpha and beta are int variables. The statement alpha = ++beta, is equivalent to the statement(s) ____.;beta = beta + 1;alpha = beta;alpha = beta;beta = beta + 1;alpha = alpha + beta;alpha = beta + 1;3 points;Question 31;1. Choose the output of the following C++ statement;cout << "Sunny " << '\n' << "Day " << endl;Sunny \nDay;Sunny \nDay endl;Sunny;Day;Sunny \n;Day;3 points;Question 32;1. Which of the following is the new line character?;\r;\n;\l;\b;3 points;Question 33;1. Consider the following code.;// Insertion Point 1;using namespace std;const float PI = 3.14;int main();//Insertion Point 2;float r = 2.0;float area;area = PI * r * r;cout << "Area = " << area alpha;cin >> ch;alpha = 17, ch = ';alpha = 1, ch = 7;alpha = 17, ch = 'A;alpha = 17, ch = 'a;3 points;Question 38;1. Suppose that x is an int variable, y is a double variable, z is an int variable, and the input is;15 76.3 14;Choose the values after the following statement executes;cin >> x >> y >> z;x = 15, y = 76, z = 14;x = 15, y = 76, z = 0;x = 15, y = 76.3, z = 14;x = 15.0, y = 76.3, z = 14.0;3 points;Question 39;1. Suppose that x and y are int variables, ch is a char variable, and the input is;4 2 A 12;Choose the values of x, y, and ch after the following statement executes;cin >> x >> ch >> y;x = 4, ch = 2, y = 12;x = 4, ch = A, y = 12;x = 4, ch = ' ', y = 2;This statement results in input failure;output is: 4 2 0 so may be This statement results in input failure;3 points;Question 40;1. Suppose that ch1, ch2, and ch3 are variables of the type char and the input is;A B;C;Choose the value of ch3 after the following statement executes;cin >> ch1 >> ch2 >> ch3;A;B;C;\n;3 points;Question 41;1. Suppose that ch1 and ch2 are char variables, alpha is an int variable, and the input is;A 18;What are the values after the following statement executes?;cin.get(ch1);cin.get(ch2);cin >> alpha;ch1 = 'A', ch2 = ' ', alpha = 18;ch1 = 'A', ch2 = '1', alpha = 8;ch1 = 'A', ch2 = ' ', alpha = 1;ch1 = 'A', ch2 = '\n', alpha = 1;3 points;Question 42;1. Suppose that ch1, ch2, and ch3 are variables of the type char and the input is;A B;C;What is the value of ch3 after the following statements execute?;cin.get(ch1);cin.get(ch2);cin.get(ch3);A;B;C;\n;3 points;Question 43;1. When you want to process only partial data, you can use the stream function ____ to discard a portion of the input.;clear;skip;delete;ignore;3 points;Question 44;1. Suppose that alpha, beta, and gamma are int variables and the input is;100 110 120;200 210 220;300 310 320;What is the value of gamma after the following statements execute?;cin >> alpha;cin.ignore(100, '\n');cin >> beta;cin.ignore(100,'\n');cin >> gamma;100;200;300;320;3 points;Question 45;1. Suppose that ch1 and ch2 are char variables and the input is;WXYZ;What is the value of ch2 after the following statements execute?;cin.get(ch1);cin.putback(ch1);cin >> ch2;W;X;Y;Z;3 points;Question 46;1. Suppose that ch1 and ch2 are char variables and the input is;WXYZ;What is the value of ch2 after the following statements execute?;cin >> ch1;ch2 = cin.peek();cin >> ch2;W;X;Y;Z;3 points;Question 47;1. In C++, the dot is an operator called the ____ operator.;dot access;member access;data access;member;3 points;Question 48;1. Suppose that x = 25.67, y = 356.876, and z = 7623.9674. What is the output of the following statements?;cout << fixed << showpoint;cout << setprecision(2);cout << x << ' ' << y << ' ' << z << endl;25.67 356.87 7623.96;25.67 356.87 7623.97;25.67 356.88 7623.97;25.67 356.876 7623.967;3 points;Question 49;1. Suppose that x = 1565.683, y = 85.78, and z = 123.982. What is the output of the following statements?;cout << fixed << showpoint;cout << setprecision(3) << x << ';cout << setprecision(4) << y << ' ' << setprecision(2) << z << endl;1565.683 85.8000 123.98;1565.680 85.8000 123.98;1565.683 85.7800 123.98;1565.683 85.780 123.980;3 points;Question 50;1. What is the output of the following statements?;cout << setfill('*');cout << "12345678901234567890" << endl;cout << setw(5) << "18" << setw(7) << "Happy;<< setw(8) << "Sleepy" << endl;12345678901234567890;***18 Happy Sleepy;12345678901234567890;***18**Happy**Sleepy;12345678901234567890;***18**Happy Sleepy;12345678901234567890;***18**Happy Sleepy**;3 points;Question 51;1. What is the output of the above statements?;cout << "123456789012345678901234567890" << endl;cout << setfill('#') << setw(10) << "Mickey;<< setfill(' ') << setw(10) << "Donald;<< setfill('*') << setw(10) << "Goofy" x >> y, //Line 4;Which of the following statements at Line 3 can be used to open the file progdata.dat and input data from this file into x and y at Line 4?;inFile.open("progdata.dat");inFile(open,"progdata.dat");open.inFile("progdata.dat");open(inFile,"progdata.dat");3 points;Question 53;1. In a ____ control structure, the computer executes particular statements depending on some condition(s).;looping;repetition;selection;sequence;3 points;Question 54;1. What does <= mean?;less than;greater than;less than or equal to;greater than or equal to;3 points;Question 55;1. Which of the following is a relational operator?;=;==;3 points;Question 56;1. Which of the following is the ?not equal to? relational operator?;=;3 points;Question 57;1. Suppose x is 5 and y is 7. Choose the value of the following expression;(x != 7) && (x y);z = x + y;else;z = y ? x;cout << x << " " << y << " " << z < 8);cout << " ** " << endl;cout << "****" << endl;else if (9 == 4);cout << "***" << endl;else;cout << "*" << endl;*;**;***;****;3 points;Question 62;1. The conditional operator?: takes ____ arguments.;two;three;four;five;3 points;Question 63;1. What is the value of x after the following statements execute?;int x;x = (5 <= 3 && 'A' 0)? x: y,.;2;3;4;6;3 points;Question 65;1. What is the output of the following code?;char lastInitial = 'S;switch (lastInitial);case 'A;cout << "section 1" <> num;for (j = 1, j > num;sum = sum + num;cout << sum num;for (int j = 1, j > num;cout << sum << endl;124;125;126;127;3 points;Question 76;1. Which executes first in a do...while loop?;statement;loop condition;initial statement;update statement;3 points;Question 77;1. What is the value of x after the following statements execute?;int x = 5;int y = 30;do;x = x * 2;while (x < y);5;10;20;40;3 points;Question 78;1. What is the output of the following loop?;count = 5;cout << 'St;do;cout << 'o;count--;while (count y);return x + y;else;return x ? y;what is the output of the following statement:?;cout << strange(4, 5) << endl;-1;1;9;20;3 points;Question 91;1. Given the following function;int next(int x);return (x + 1);what is the output of the following statement?;cout << next(next(5)) << endl;5;6;7;8;3 points;Question 92;1. Given the function prototype;float test(int, int, int);which of the following statements is legal?;cout << test(7, test(14, 23));cout << test(test(7, 14), 23);cout << test(14, 23);cout tryMe(x);cout << tryMe(2.0, 3.0);cout << tryMe(tryMe(double, double), double);cout << tryMe(tryMe(float, float), float);3 points;Question 94;1. Given the function prototype: double testAlpha(int u, char v, double t), which of the following statements is legal?;cout << testAlpha(5, 'A', 2);cout << testAlpha(int 5, char 'A', int 2);cout << testAlpha('5.0', 'A', '2.0');cout myFunc(y);cout myFunc('2', '3');cout << myFunc(myFunc(7), 15);3 points;Question 98;1. The statement: return 8, 10, returns the value ____.;8;10;18;80;3 points;Question 99;1. The statement: return 37, y, 2 * 3, returns the value ____.;2;3;y;6;3 points;Question 100;1. The statement: return 2 * 3 + 1, 1 + 5, returns the value ____.;2;3;6;7

 

Paper#29156 | Written in 18-Jul-2015

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