Free Test Basics of exception ha... – C++ Lan...

Q1: What keyword is used to throw an exception in C++?

A. throw B. try C. catch D. except

Q2: Which block is used to handle exceptions?

A. catch B. try C. throw D. finally

Q3: What keyword defines a block of code to test for exceptions?

A. try B. catch C. throw D. handle

Q4: Which of the following is correct syntax to catch all exceptions?

A. catch(...) B. catch(*) C. catch(all) D. catch(any)

Q5: What happens if an exception is not caught?

A. Program terminates B. Exception ignored C. Program continues normally D. Compiler error

Q6: Can exceptions be thrown from constructors?

A. Yes B. No C. Only if explicitly allowed D. Only runtime exceptions

Q7: Which standard C++ header file is used for exceptions?

A. <exception> B. <stdexcept> C. <errors> D. <throw>

Q8: What type of function is used to clean up resources during exceptions?

A. Destructor B. Constructor C. Main function D. Static function

Q9: How do you specify multiple catch blocks?

A. Sequential catch blocks for different exception types B. Single catch block for all exceptions C. Using throw inside catch D. Using try inside catch

Q10: Can exceptions be nested?

A. Yes, exceptions can be thrown inside catch blocks B. No, it causes compiler error C. Only for runtime errors D. Only with throw

Q11: What does a throw expression do?

A. Transfers control to the nearest catch block B. Ends the program C. Ignores errors D. Creates new objects

Q12: What is an exception specification?

A. It declares which exceptions a function may throw B. It catches exceptions C. It prevents exceptions D. It logs exceptions

Q13: Which is the base class for all standard exceptions?

A. std::exception B. std::error C. std::throwable D. std::base

Q14: What is the role of the noexcept keyword?

A. Specifies that a function does not throw exceptions B. Allows throwing exceptions C. Catches exceptions D. Throws exceptions automatically

Q15: What kind of exceptions should be thrown?

A. Only objects derived from std::exception B. Only integers C. Only strings D. Only built-in types

Q16: What does rethrowing an exception mean?

A. Throwing the current exception again from a catch block B. Throwing a new exception C. Throwing without catch D. Throwing a void exception

Q17: Is it possible to catch exceptions by reference?

A. Yes, it is recommended to catch by reference B. No, catch by value only C. No, catch by pointer only D. Only catch by pointer is valid

Q18: What is stack unwinding?

A. Process of calling destructors for local objects when exception is thrown B. Process of catching exceptions C. Process of throwing exceptions D. Process of creating objects

Q19: Can destructors throw exceptions?

A. No, destructors should never throw exceptions B. Yes, always C. Only if marked noexcept D. Only if called explicitly

Quiz for Basics of exception handling