Technology problems
- 1. How many kinds of entities are directly parameterized in c++?
Options- A. 1
- B. 2
- C. 3
- D. 4 Discuss
Correct Answer: 3
Explanation:
C++ allows us to parameterize directly three kinds of entities through templates: types, constants, and templates.
- 2. Where does the exceptions are used?
Options- A. Exceptions are used when postconditions of a function cannot be satisfied.
- B. Exceptions are used when postconditions of a function can be satisfied.
- C. To preserve the program
- D. none of these Discuss
Correct Answer: Exceptions are used when postconditions of a function can be satisfied.
- 3. Where does the exception are handled?
Options- A. inside the program
- B. outside the regular code
- C. both a & b
- D. none of these Discuss
Correct Answer: outside the regular code
- 4. What are the operators available in dynamic memory allocation?
Options- A. new
- B. delete
- C. compare
- D. both a & b Discuss
Correct Answer: both a & b
Explanation:
new and delete operators are mainly used to allocate and deallocate
during runtime.
- 5. Why is it expensive to use objects for exception?
Options- A. Exception object is created only if an error actually happens
- B. Because of execution time
- C. Memory space involved in creating an exception object
- D. None of the mentioned Discuss
Correct Answer: Exception object is created only if an error actually happens
Explanation:
If an error occurs in program, then only exception object is created otherwise, It will not be created. So it?s expensive to use in the program.
- 6. Where does the standard exception classes are grouped?
Options- A. namespace std
- B. error
- C. catch
- D. none of these Discuss
Correct Answer: namespace std
Explanation:
:As these are standard exceptions, they need to be defined in the standard block, So it is defined under namespace std.
- 7. What will happen when introduce the interface of classes in a run-time polymorphic hierarchy?
Options- A. Separation of interface from implementation
- B. Merging of interface from implementation
- C. Separation of interface from debugging
- D. None of the mentioned Discuss
Correct Answer: Separation of interface from implementation
- 8. What of the following describes protected access specifier?
Options- A. The variable is visible only outside inside the block
- B. The variable is visible everywhere
- C. The variable is visible to its block and to it?s derived class
- D. None of these Discuss
Correct Answer: The variable is visible to its block and to it?s derived class
- 9. What is the Run-Time Type Information?
Options- A. Information about an object?s datatype at runtime
- B. Information about the variables
- C. Information about the given block
- D. None of these Discuss
Correct Answer: Information about an object?s datatype at runtime
Explanation:
With the help of RTTI, We can get the information about the data type at the runtime.
- 10. Which is best for coding the standard libary for c++?
Options- A. no trailing underscores on names
- B. complex objects are returned by value
- C. have a member-swap()
- D. All of the mentioned Discuss
Correct Answer: All of the mentioned
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