McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Programming Languages , Master of Science in Software Engineering (MSc SE) .
| 1. |
If the class name is X, what is the type of its “this” pointer (in a nonstatic, non-const member function)? |
| A. | const x* const |
| B. | x* const |
| C. | x* |
| D. | x& |
| Answer» D. x& | |
| 2. |
Which classes allow primitive types to be accessed as objects? |
| A. | storage |
| B. | virtual |
| C. | friend |
| D. | wrapper |
| Answer» B. virtual | |
| 3. |
When is std::bad_alloc exception thrown? |
| A. | when new operator cannot allocate memory |
| B. | when alloc function fails |
| C. | when type requested for new operation is considered bad, thisexception is thrown |
| D. | object |
| Answer» D. object | |
| 4. |
Which one of the following is not a fundamental data type in C++ |
| A. | float |
| B. | string |
| C. | int |
| D. | wchar_t |
| Answer» A. float | |
| 5. |
Which of the following is a valid destructor of the class name “Country” |
| A. | int ~country() |
| B. | void country() |
| C. | int ~country(country obj) |
| D. | void ~country() |
| Answer» B. void country() | |
| 6. |
Which of the following correctly describes C++ language? |
| A. | statically typed language |
| B. | dynamically typed language |
| C. | both statically and dynamically typed language |
| D. | type-less language |
| Answer» D. type-less language | |
| 7. |
Which of the following keyword supports dynamic method resolution? |
| A. | abstract |
| B. | virtual |
| C. | dynamic |
| D. | typeid |
| Answer» A. abstract | |
| 8. |
Which of the following is the most preferred way of throwing and handling exceptions? |
| A. | throw by value and catch by reference. |
| B. | throw by reference and catch by reference. |
| C. | throw by value and catch by value |
| D. | throw the pointer value and provide catch for the pointer type. |
| Answer» B. throw by reference and catch by reference. | |
| 9. |
Which of the following is not true about preprocessor directives |
| A. | they begin with a hash symbol |
| B. | they are processed by a preprocessor |
| C. | they form an integral part of the code |
| D. | they have to end with a semi colon |
| Answer» A. they begin with a hash symbol | |
| 10. |
What’s wrong? while( (i < 10) && (i > 24)) |
| A. | the logical operator && cannot be used in a test condition |
| B. | the while loop is an exit-condition loop |
| C. | the test condition is always false |
| D. | the test condition is always true |
| Answer» D. the test condition is always true | |
| 11. |
A continue statement causes execution to skip to |
| A. | the return 0; statement |
| B. | the first statement after the loop |
| C. | the statement following the continue statement |
| D. | the next iteration of the loop |
| Answer» C. the statement following the continue statement | |
| 12. |
What’s wrong? (x = 4 && y = 5) ? (a = 5) ; (b = 6); |
| A. | the question mark should be an equal sign |
| B. | the first semicolon should be a colon |
| C. | there are too many variables in the statement |
| D. | the conditional operator is only used with apstrings |
| Answer» D. the conditional operator is only used with apstrings | |
| 13. |
What’s wrong? for (int k = 2, k <=12, k++) |
| A. | the increment should always be ++k |
| B. | the variable must always be the letter i when using a for loop |
| C. | there should be a semicolon at the end of the statement |
| D. | the commas should be semicolons |
| Answer» B. the variable must always be the letter i when using a for loop | |
| 14. |
Which of the following is not recommended in a header file? |
| A. | type definitions (typedefs) |
| B. | class definitions |
| C. | function definitions |
| D. | template definitions |
| Answer» D. template definitions | |
| 15. |
Which of the STL containers store the elements contiguously (in adjacent memory locations)? |
| A. | std::vector |
| B. | std::list |
| C. | std::map |
| D. | std::set |
| Answer» C. std::map | |
| 16. |
Which of the following is not a standard exception built in C++. |
| A. | std::bad_creat |
| B. | std::bad_alloc |
| C. | std::bad_cast |
| D. | std::bad_typeid |
| Answer» A. std::bad_creat | |
| 17. |
What does STL stand for? |
| A. | simple template library |
| B. | standard template library |
| C. | static type library |
| D. | single type-based library |
| Answer» B. standard template library | |
| 18. |
What is the difference between overloaded functions and overridden functions? |
| A. | overloading is a dynamic or run-time binding and overriding is static or compile-time binding |
| B. | redefining a function in a friend class is called function overriding while redefining a function in a derived class is called an overloaded function. |
| C. | overloading is a static or compile-time binding and overriding is dynamic or run-time binding |
| D. | redefining a function in a friend class is called function overloading while redefining a function in a derived class is called as overridden function. |
| Answer» B. redefining a function in a friend class is called function overriding while redefining a function in a derived class is called an overloaded function. | |
| 19. |
Which one of the following is not a valid reserved keyword in C++ |
| A. | explicit |
| B. | public |
| C. | implicit |
| D. | private |
| Answer» C. implicit | |
| 20. |
Each pass through a loop is called a/an |
| A. | enumeration |
| B. | iteration |
| C. | culmination |
| D. | pass through |
| Answer» C. culmination | |
| 21. |
Which of the following is true about const member functions? |
| A. | const members can be invoked on both const as well as nonconst objects |
| B. | const members can be invoked only on const objects and not on nonconst objects |
| C. | nonconst members can be invoked on const objects as well as nonconst objects |
| D. | none of the above |
| Answer» B. const members can be invoked only on const objects and not on nonconst objects | |
| 22. |
Which of the following relationship is known as inheritancerelationship? |
| A. | ‘has-a’ relationship |
| B. | ‘is-a’ relationship |
| C. | association relationship |
| D. | none of the above |
| Answer» A. ‘has-a’ relationship | |
| 23. |
If class A is friend of class B and if class B is friend of class C, which of the following is true? |
| A. | class c is friend of class a |
| B. | class a is friend of class c |
| C. | class a and class c do not have any friend relationship |
| D. | none of the above |
| Answer» B. class a is friend of class c | |
| 24. |
A direct access file is: |
| A. | a file in which recoreds are arranged in a way they are inserted in a file |
| B. | a file in which records are arranged in a particular order |
| C. | files which are stored on a direct access storage medium |
| D. | none of the above |
| Answer» C. files which are stored on a direct access storage medium | |
| 25. |
Which of the following is not a component of file system |
| A. | access method |
| B. | auxiliary storage management |
| C. | free integrity mechanism |
| D. | none of the above |
| Answer» C. free integrity mechanism | |
| 26. |
Seek time is |
| A. | time taken to retrieve a dta |
| B. | time taken by read/write head mechanism to position itself over appropriate cylinder |
| C. | time taken by appropriate sector to come under read/write |
| D. | none of the above |
| Answer» D. none of the above | |
| 27. |
‘Prime area’ in context of file system is defined as |
| A. | it is memory area created by operating system |
| B. | it is an area into which data records are written |
| C. | it is the main area of a web page |
| D. | none of the above |
| Answer» B. it is an area into which data records are written | |
| 28. |
In mulit-list organization |
| A. | records that have equivalent value for a given secondary index item are linked together to form a list. |
| B. | records are loaded in ordered sequence defined by collating sequence by content of the key |
| C. | records are directly accessed by record key field |
| D. | none of the above |
| Answer» B. records are loaded in ordered sequence defined by collating sequence by content of the key | |
| 29. |
Which of the following is/are advantages of cellular partitioned structure: |
| A. | simultaneous read operations can be overlapped |
| B. | search time is reduced |
| C. | both a & b |
| D. | none of the above |
| Answer» A. simultaneous read operations can be overlapped | |
| 30. |
*ptr++ is equivalenet to: |
| A. | ptr++ |
| B. | *ptr |
| C. | ++*ptr |
| D. | none of the above |
| Answer» C. ++*ptr | |
| 31. |
The conditional compilation |
| A. | it is taken care of by the compiler |
| B. | it is setting the compiler option conditionally |
| C. | it is compiling a program based on a condition |
| D. | none of above |
| Answer» D. none of above | |
| 32. |
Originally ‘C’ was developed as: |
| A. | system programming language |
| B. | general purpose language |
| C. | data processing language |
| D. | none of above |
| Answer» C. data processing language | |
| 33. |
An inverted file |
| A. | locates information about data in small files that are maintained apart from actual data record |
| B. | a file which stores opposite records |
| C. | a file which stores information about records of a system |
| D. | none of above |
| Answer» B. a file which stores opposite records | |
| 34. |
Which of the following is not a file operation: |
| A. | repositioning |
| B. | truncating |
| C. | appending |
| D. | none of above |
| Answer» A. repositioning | |
| 35. |
Latency time is: |
| A. | time taken by read/write head mechanism to position itself over appropriate cylinder |
| B. | time taken to transfer a dta from memory |
| C. | time taken by appropriate sector to come under read/write head |
| D. | none of above |
| Answer» D. none of above | |
| 36. |
The two types of file structure existing in VSAM file are |
| A. | key sequenced structure, entry sequenced structure |
| B. | key sequence structure, exit sequenced structure |
| C. | entry sequence structure, exit sequenced structure |
| D. | none of above |
| Answer» C. entry sequence structure, exit sequenced structure | |
| 37. |
How many copies of a class static member are shared between objects of the class? |
| A. | a copy of the static member is shared by all objects of a class |
| B. | a copy is created only when at least one object is created from that class |
| C. | a copy of the static member is created for each instntiation of the class |
| D. | no memory is allocated for static members of a class |
| Answer» C. a copy of the static member is created for each instntiation of the class | |
| 38. |
Which looping process checks the test condition at the end of the loop? |
| A. | for |
| B. | while |
| C. | do-while |
| D. | no looping process checks the test condition at the end |
| Answer» C. do-while | |
| 39. |
The default access level assigned to members of a class is ___________ |
| A. | private |
| B. | public |
| C. | protected |
| D. | needs to be assigned |
| Answer» C. protected | |
| 40. |
Which of the following correctly describes the meaning of‘namespace’ feature in C++? |
| A. | namespaces refer to the memory space allocated for names used in a program |
| B. | namespaces refer to space between the names in a program |
| C. | namespaces refer to packing structure of classes in a program. |
| D. | namespaces provide facilities for organizing the names in aprogram to avoid name clashes. |
| Answer» A. namespaces refer to the memory space allocated for names used in a program | |
| 41. |
Which of the following correctly describes the meaning of ‘namespace’ feature in C++? |
| A. | namespaces refer to the memory space allocated for names used in a program |
| B. | namespaces refer to space between teh names in a program |
| C. | namespaces refer to space between the names in a program |
| D. | namespaces provide facilities for organizing the names in a program to avoid name clashes |
| Answer» D. namespaces provide facilities for organizing the names in a program to avoid name clashes | |
| 42. |
Which of the following language is not supported by C++? |
| A. | exception handling |
| B. | reflection |
| C. | operator overloading |
| D. | namespaces |
| Answer» D. namespaces | |
| 43. |
class derived: public base1, public base2 { } is an example of |
| A. | polymorphic inheritance |
| B. | multilevel inheritance |
| C. | hierarchical inheritance |
| D. | multiple inheritance |
| Answer» B. multilevel inheritance | |
| 44. |
Which of the following languages is a subset of C++ language? |
| A. | c language |
| B. | java language |
| C. | c# language |
| D. | language |
| Answer» D. language | |
| 45. |
How do we declare an ‘interface’ class? |
| A. | by making all the methods pure virtual in a class |
| B. | by making all the methods abstract using the keyword ‘abstract’ in a class |
| C. | by declaring the class as interface with the keyword ‘interface’ |
| D. | it is not possible to create interface class in c++ |
| Answer» A. by making all the methods pure virtual in a class | |
| 46. |
How do we declare an abstract class? |
| A. | by providing at least one pure virtual method (function signature followed by ==0;) in a class |
| B. | by declaring at least one method abstract using the keyword ‘abstract’ in a class |
| C. | by declaring the class abstract with the keyword ‘abstract’ |
| D. | it is not possible to create abstract classes in c++ |
| Answer» A. by providing at least one pure virtual method (function signature followed by ==0;) in a class | |
| 47. |
Which of the following is not an advantage of secondary memory |
| A. | it is cost-effective |
| B. | it has large storage capacity |
| C. | it has highest speed |
| D. | it is easily portable |
| Answer» A. it is cost-effective | |
| 48. |
What happens when a pointer is deleted twice? |
| A. | it can abort the program |
| B. | it can cause a failure |
| C. | it can cause an error |
| D. | it can cause a trap |
| Answer» C. it can cause an error | |
| 49. |
Which of the following language feature is not an access specifier in C++? |
| A. | public |
| B. | private |
| C. | c protected |
| D. | internal |
| Answer» D. internal | |
| 50. |
Expression C=i++ causes |
| A. | value of i assigned to c and then i incremented by 1 |
| B. | i to be incremented by 1 and then value of i assigned to c |
| C. | value of i assigned to c |
| D. | i to be incremented by 1 |
| Answer» D. i to be incremented by 1 | |
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