Call Stack

D · To manage function calls and local variables

The stack is used to manage function calls, including storing return addresses, parameters, and local variables.

A · Return address and parameters

Upon a function call, the return address and parameters are pushed onto the stack to allow the function to execute and return properly.

D · The stack frame is popped

When a function returns, its stack frame is popped off the stack, and control returns to the caller.

D · Last In First Out

LIFO stands for Last In First Out, which is the order in which items are added and removed from a stack.

D · Because it stores function call information

The stack is often called the call stack because it manages the sequence of function calls.

B · Stack

A stack is ideal because function calls follow a last-in-first-out order.

A · True

Each function call typically creates a new stack frame to hold its execution context.

A · To keep track of function calls and returns

The call stack keeps track of who called whom, what arguments were passed, and where to return, making it essential for function execution.

C · Function parameters and local variables

A stack frame holds the function's parameters, local variables, the return address, and saved registers.

B · Last In, First Out

LIFO stands for Last In, First Out, which describes how the stack operates by returning functions in the reverse order they were called.

B · The stack frame for that function is popped off

When a function returns, its stack frame is popped off, which removes the function's parameters and local variables from the stack.

B · When too many frames are pushed onto the stack

A stack overflow occurs when too many frames are pushed onto the stack, often due to infinite or very deep recursion.

D · It indicates where to return after the function finishes

The return address is crucial because it tells the program where to return after the callee function has finished executing.

A · For storing short-lived function call data

The stack is used for short-lived call bookkeeping, such as storing parameters and local variables during function execution.

A · Each recursive call pushes a new frame onto the stack

In recursion, each recursive call pushes a new stack frame, allowing the program to keep track of multiple calls.

A · Not having a base case in recursive functions

A common mistake that leads to stack overflow is failing to provide a base case in recursive functions, causing infinite recursion.

A · The call stack of active function calls

When a program crashes, a debugger can display the call stack, which shows the chain of active function calls leading to the crash.

A · A region of the stack containing function call information

A stack frame is the portion of the stack that holds the parameters, return address, and local variables for a single function call.

C · It supports recursion and nested calls

The stack's LIFO nature makes it ideal for managing nested function calls and recursion.

D · Push parameters, push return address, jump to function

Typically, parameters are pushed first, then the return address, and then control jumps to the function.

A · To point to the top of the stack

The stack pointer keeps track of the top of the stack, which changes as items are pushed or popped.

B · When the stack exceeds its allocated size

A stack overflow occurs when too many items are pushed onto the stack, exceeding its capacity, often due to infinite recursion.

D · By storing multiple return addresses and local variables

Each recursive call creates a new stack frame, allowing the function to maintain separate local variables and return addresses.

C · Global variables

Global variables are stored in a separate data segment, not in the stack frame.

C · It removes the top function's data and returns control

Popping a stack frame removes the top function's data and restores control to the calling function.

A · The stack frame remains, potentially causing a stack overflow

If a function never returns, its stack frame is not popped, leading to accumulation and possibly a stack overflow.

B · False

The direction of stack growth depends on the architecture; it can grow upwards or downwards.