MCQOPTIONS
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MCQOPTIONS
This section includes 50 Mcqs, each offering curated multiple-choice questions to sharpen your Calsoft knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Insert into instructor values (10211, 'Smith', 'Biology', 66000); What type of statement is this? |
| A. | Query |
| B. | DML |
| C. | Relational |
| D. | DDL |
| Answer» C. Relational | |
| 2. |
To remove a relation from an SQL database, we use the ______ command. |
| A. | Delete |
| B. | Purge |
| C. | Remove |
| D. | Drop table |
| Answer» E. | |
| 3. |
If there is more than one key for relation schema in DBMS then each key in relation schema is classified as |
| A. | Prime key |
| B. | Super key |
| C. | Candidate key |
| D. | Primary key |
| Answer» D. Primary key | |
| 4. |
The primary key is selected from the: |
| A. | composite keys |
| B. | determinants |
| C. | foreign keys |
| D. | candidate keys |
| Answer» E. | |
| 5. |
In SQL, __________ is an Aggregate function. |
| A. | SELECT |
| B. | CREATE |
| C. | AVG |
| D. | MODIFY |
| Answer» D. MODIFY | |
| 6. |
Drop table structure is |
| A. | DML Statement |
| B. | DDL Statement |
| C. | Query Statement |
| D. | None of the above |
| Answer» C. Query Statement | |
| 7. |
MVD is called as |
| A. | Many Value Dependency |
| B. | More Value Dependency |
| C. | Multi Value Dependency |
| D. | All of the Above |
| Answer» D. All of the Above | |
| 8. |
The value of Primary key |
| A. | can be duplicated |
| B. | can be null |
| C. | cannot be null |
| D. | none of these |
| Answer» D. none of these | |
| 9. |
If property of class is declare using var then PHP5 will treat the property as? |
| A. | Protected |
| B. | Private |
| C. | Public |
| D. | Final |
| Answer» D. Final | |
| 10. |
Which keyword cannot be used while defining property? |
| A. | Public |
| B. | Static |
| C. | Final |
| D. | Private |
| Answer» D. Private | |
| 11. |
If class implementing the interface does not use exact same method signatures as are defined in the interface. Will show |
| A. | No Error |
| B. | Fatal Error |
| C. | Warning Error |
| D. | Notice Error |
| Answer» C. Warning Error | |
| 12. |
What is input sanitization? |
| A. | Secure user input |
| B. | Converting input into a format that PHP supports |
| C. | Removing or cleaning potentially malicious user input. |
| D. | All of the above |
| Answer» D. All of the above | |
| 13. |
What function split an array into chunks? |
| A. | array_chunk() |
| B. | array_split() |
| C. | array_split_chunk |
| D. | array_chunks() |
| Answer» B. array_split() | |
| 14. |
What function creates a cookie? |
| A. | create_cookie() |
| B. | set_cookie() |
| C. | setcookie() |
| D. | None of the above |
| Answer» D. None of the above | |
| 15. |
Which of the following data structure is linear type? |
| A. | Strings |
| B. | Queue |
| C. | Lists |
| D. | All of the above |
| Answer» E. | |
| 16. |
The statement printf("%c", 100); will print? |
| A. | prints 100 |
| B. | print garbage |
| C. | prints ASCII equivalent of 100 |
| D. | None of the above |
| Answer» D. None of the above | |
| 17. |
The "C" language is |
| A. | Context free language |
| B. | Context sensitive language |
| C. | Regular language |
| D. | None of the above |
| Answer» B. Context sensitive language | |
| 18. |
The worst case time complexity of AVL tree is better in comparison to binary search tree for |
| A. | Search and Insert Operations |
| B. | Search and Delete Operations |
| C. | Insert and Delete Operations |
| D. | Search, Insert and Delete Operations |
| Answer» E. | |
| 19. |
In which tree, for every node the height of its left subtree and right subtree differ almost by one? |
| A. | Binary search tree |
| B. | AVL tree |
| C. | Threaded Binary Tree |
| D. | Complete Binary Tree |
| Answer» C. Threaded Binary Tree | |
| 20. |
Which of the following sorting algorithms does NOT have a worst-case running time of O(n2)? |
| A. | Insertion sort |
| B. | Merge sort |
| C. | Quicksort |
| D. | Bubble sort |
| Answer» C. Quicksort | |
| 21. |
Which data structure type is NOT linear from the following? |
| A. | Doubly Link List |
| B. | 2D Array |
| C. | Binary Search Tree |
| D. | Queue |
| Answer» D. Queue | |
| 22. |
What is the purpose of getc()? |
| A. | read a character from STDIN |
| B. | read a character from a file |
| C. | read all file |
| D. | read file randomly |
| Answer» C. read all file | |
| 23. |
Which of the following is not an iterative statement? |
| A. | while |
| B. | do while |
| C. | switch |
| D. | for |
| Answer» D. for | |
| 24. |
Which is an invalid name of identifier? |
| A. | world |
| B. | addition23 |
| C. | test-name |
| D. | factorial |
| Answer» D. factorial | |
| 25. |
Which of these assignments is invalid? |
| A. | short s = 48; |
| B. | float f = 4.3; |
| C. | double d = 4.3; |
| D. | int I = `1`; |
| Answer» E. | |
| 26. |
The do...while looping statement |
| A. | is executed only once if the condition is true. |
| B. | is also known as entry-controlled loop. |
| C. | is executed at least once if the condition is false. |
| D. | is unconditional looping statement. |
| Answer» D. is unconditional looping statement. | |
| 27. |
The value of j at the end of the execution of the following C program. int incr (int i) { static int count = 0; count = count + i; return (count); } main () { int i,j; for (i = 0; i <=4; i++) j = incr(i); } |
| A. | 10 |
| B. | 4 |
| C. | 6 |
| D. | 7 |
| Answer» B. 4 | |
| 28. |
Consider the following three C functions : [PI] int * g (void) { int x = 10; return (&x); } [P2] int * g (void) { int * px; *px = 10; return px; } [P3] int *g (void) { int *px; px = (int *) malloc (sizeof(int)); *px = 10; return px; } |
| A. | Only P3 |
| B. | Only P1 and P3 |
| C. | Only P1 and P2 |
| D. | P1, P2 and P3 |
| Answer» D. P1, P2 and P3 | |
| 29. |
What is the output of following program? #include <iostream> using namespace std; int max(int& x, int& y, int& z) { if (x > y && y > z) { y++; z++; return x++; } else { if (y > x) return y++; else return z++; } } int main() { int A, B; int a = 10, b = 13, c = 8; A = max(a, b, c); cout << a++ << " " << b-- << " " << ++c << endl; B = max(a, b, c); cout << ++A << " " << --B << " " << c++ << endl; return 0; } |
| A. | 10 14 8 or 14 13 8 |
| B. | 10 13 8 or 11 14 9 |
| C. | 10 14 9 or 14 12 9 |
| D. | 11 12 8 or 13 14 8 |
| Answer» D. 11 12 8 or 13 14 8 | |
| 30. |
What is the output of following program? #include <iostream> using namespace std; #include <iostream> using namespace std; int main() { int i, x[5], y, z[5]; for (i = 0; i < 5; i++) { x[i] = i; z[i] = i + 3; y = z[i]; x[i] = y++; } for (i = 0; i < 5; i++) cout << x[i] << " "; return 0; } |
| A. | 3 4 5 6 7 |
| B. | 4 5 6 7 8 |
| C. | 2 3 4 5 6 |
| D. | none of above |
| Answer» B. 4 5 6 7 8 | |
| 31. |
What is the output of following program? #include <iostream> using namespace std; int main() { char m; switch (m) { case 'c': cout << "Computer Science"; case 'm': cout << "Mathematics"; break; case 'a': cout << "Accoutant"; break; default: cout << "wrong choice"; } return 0; } |
| A. | Computer Science, Mathematics |
| B. | Mathematics |
| C. | wrong choice |
| D. | error |
| Answer» D. error | |
| 32. |
What is the output of following program? #include <iostream> using namespace std; int main() { int i, j, k; int sum[2][4]; for (i = 0; i < 2; i++) { for (j = 0; j < 3; j++) sum[i][j]; } cout << sum[i][j]; return 0; } |
| A. | 3 3 |
| B. | 2 0 |
| C. | garbage value |
| D. | 2 3 |
| Answer» D. 2 3 | |
| 33. |
Which one of the following computer network is built on the top of another network? |
| A. | prior network |
| B. | chief network |
| C. | prime network |
| D. | overlay network |
| Answer» E. | |
| 34. |
Who is the father of PHP? |
| A. | Rasmus Lerdorf |
| B. | Willam Makepiece |
| C. | Drek Kolkevi |
| D. | List Barely |
| Answer» B. Willam Makepiece | |
| 35. |
An expression involving byte, int, and literal numbers is promoted to which of these? |
| A. | int |
| B. | long |
| C. | byte |
| D. | float |
| Answer» B. long | |
| 36. |
wtmp and utmp files contain: |
| A. | Temporary system data |
| B. | User login-logout log |
| C. | The user’s command execution log |
| D. | The user’s su and sudo attempts |
| Answer» C. The user’s command execution log | |
| 37. |
Which of the following is “NOT” a UNIX variant ? |
| A. | Solaris |
| B. | AIX |
| C. | IRIX |
| D. | AS400 |
| Answer» E. | |
| 38. |
If #include is used with file name in angular brackets. |
| A. | The file is searched for in the standard compiler include paths |
| B. | The search path is expanded to include the current source directory |
| C. | Both a & b |
| D. | None of the mentioned |
| Answer» B. The search path is expanded to include the current source directory | |
| 39. |
#include is called |
| A. | Preprocessor directive |
| B. | Inclusion directive |
| C. | File inclusion directive |
| D. | None of the mentioned |
| Answer» B. Inclusion directive | |
| 40. |
which of the following is used to implement the c++ interfaces? |
| A. | absolute variables |
| B. | abstract classes |
| C. | constant variables |
| D. | none of the mentioned |
| Answer» C. constant variables | |
| 41. |
How many kinds of classes are there in c++? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 42. |
How many specifiers are present in access specifiers in class? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 43. |
What is the output of this program? #include < stdio.h > using namespace std; int main() { char str[5] = "ABC"; cout << str[3]; cout << str; return 0; } |
| A. | ABC |
| B. | ABCD |
| C. | AB |
| D. | None of the mentioned |
| Answer» B. ABCD | |
| 44. |
What is a array? |
| A. | An array is a series of elements of the same type in contiguous memory locations |
| B. | An array is a series of element |
| C. | An array is a series of elements of the same type placed in non-contiguous memory locations |
| D. | None of the mentioned |
| Answer» B. An array is a series of element | |
| 45. |
Which of the following data structure is used to convert infix notations to postfix notations ? |
| A. | Branch |
| B. | Queue |
| C. | Tree |
| D. | Stack |
| Answer» E. | |
| 46. |
When is a copy constructor invoked? |
| A. | A function returns by value |
| B. | A function returns by reference |
| C. | An argument is passed by reference |
| D. | None of these |
| Answer» B. A function returns by reference | |
| 47. |
What is the significance of & symbol? |
| A. | Process the commands in order one after the otherqq |
| B. | Process these commands first |
| C. | Process these commands last |
| D. | The second command fails if the first command fails |
| Answer» B. Process these commands first | |
| 48. |
What command combines the content of one file with another? |
| A. | ADD |
| B. | CONCAT |
| C. | APPEND |
| D. | RESTORE |
| Answer» D. RESTORE | |
| 49. |
Which of the following information is not provided by data dictionary? |
| A. | Data location |
| B. | Size of the disk storage device |
| C. | The owner of the data |
| D. | Security limitations |
| Answer» C. The owner of the data | |
| 50. |
Which of the following is a type of DBMS software? |
| A. | Utilities |
| B. | query Language |
| C. | Report writer |
| D. | All of these |
| Answer» E. | |