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computer science quiz-Main memory is called

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Question;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;Hello World;return 0;In the cout statement, the missing semicolon in the code;above will be caught by the ____.;compiler;editor;assembler;control;unit;3 points;Question 17;1. A program;that loads an executable program into main memory is called a(n) ____.;compiler;loader;linker;assembler;3 points;Question 18;1. A;step-by-step problem-solving process in which a solution is arrived at in a;finite amount of time is called a(n) ____.;algorithm;linker;analysis;design;3 points;Question 19;1. To;develop a program to solve a problem, you start by ____.;analyzing;the problem;implementing;the solution in C++;designing;the algorithm;entering;the solution into a computer system;3 points;Question 20;1. In C++;the mechanism that allows you to combine data and operations on the data into a;single unit is called a(n) ____.;object;class;function;algorithm;3 points;Question 21;1. Which of;the following is a legal identifier?;program!;program_1;1program;program;1;3 points;Question 22;1. All of;the following are examples of integral data types EXCEPT ____.;int;char;double;short;3 points;Question 23;1. Which of;the following is a valid char value?;-129;-128;128;129;All are valid;3 points;Question 24;1. The value;of the expression 17 % 7 is ____.;1;2;3;4;3 points;Question 25;1. The;expression static_cast (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 <= 5);St;Sto;Stop;This is;an infinite loop.;3 points;Question 79;1. Which of;the following loops does not have an entry condition?;EOF-controlled;while loop;sentinel-controlled;while loop;do...while;loop;for;loop;3 points;Question 80;1. Which of;the following is a repetition structure in C++?;if;switch;while...do;do...while;3 points;Question 81;1. Which of;the following is true about a do...while loop?;The;body of the loop is executed at least once.;The;logical expression controlling the loop is evaluated before the loop is;entered.;The;body of the loop may not execute at all.;It;cannot contain a break statement.;3 points;Question 82;1. Which of;the following is not a function of the break statement?;To exit;early from a loop;To skip;the remainder of a switch structure;To;eliminate the use of certain bool variables in a loop;To;ignore certain values for variables and continue with the next iteration of a;loop;3 points;Question 83;1. Which;executes immediately after a continue statement in a while and do-while loop?;loop-continue;test;update;statement;loop;condition;the;body of the loop;3 points;Question 84;1. When a;continue statement is executed in a ____, the update statement always executes.;while;loop;for;loop;switch;structure;do...while;loop;3 points;Question 85;1. The;heading of the function is also called the ____.;title;function;signature;function;head;function;header;3 points;Question 86;1. Given the;following function prototype: int test(float, char), which of the following;statements is valid?;cout;<< test(12, &);cout;<< test("12.0", '&&');int u =;test(5.0, '*');cout;< 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#36981 | Written in 18-Jul-2015

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