BPSC TRE – Compiler Design: Runtime Environments & Code Optimization

Question 41

MCQ · Single Correct 1 mark

Which of the following is true regarding Heap Allocation?

A (A) Allocation and deallocation can occur in any arbitrary order at runtime B (B) Memory fragmentation (internal and external) can occur C (C) Used when object lifespans extend beyond the procedure that created them D (D) More than one of the above E (E) None of the above

Question 42

MCQ · Single Correct 1 mark

What is 'Dangling Pointer' in C/C++ memory management?

A (A) A pointer that references a memory block that has already been deallocated / freed B (B) A pointer initialized to NULL C (C) A pointer pointing to global static memory D (D) More than one of the above E (E) None of the above

Question 43

MCQ · Single Correct 1 mark

What is a 'Memory Leak'?

A (A) Dynamically allocated heap memory that is no longer reachable by the program but has not been freed B (B) Stack overflow caused by infinite recursion C (C) Reading beyond array bounds D (D) More than one of the above E (E) None of the above

Question 44

MCQ · Single Correct 1 mark

In a 32-bit architecture, what is the 'Alignment' constraint for storing word-sized integers in memory?

A (A) Data items must begin at memory addresses that are multiples of their size (e.g., 4-byte integers at addresses divisible by 4) B (B) Data items must be saved strictly in odd-numbered address registers C (C) Data items must be placed on heap boundaries only D (D) More than one of the above E (E) None of the above

Question 45

MCQ · Single Correct 1 mark

What is the primary function of a Code Generator in a compiler?

A (A) Maps intermediate representations (IR) to target machine instructions and manages register allocation B (B) Strips comments and produces token streams C (C) Performs syntax checking using context-free grammars D (D) More than one of the above E (E) None of the above