Nvidia Interview Questions and Answers

Nvidia is a leading manufacturer of high-end GPUs and mainly develops integrated circuits. Practice answering the most anticipated Nvidia interview questions is necessary for candidates. So here we are providing the most asked questions on Nvidia interviews.

What are volatile variables?

It is a keyword in programming languages. The goal of the volatile keyword is to prevent the compiler from optimizing objects that can change in ways the compiler cannot predict.

Because their values can be altered at any time by code outside the scope of the current code, objects that have been declared to be volatile are excluded from optimization.

What are storage classes in C++?

A variable or function characteristics can be described with the help of Storage Classes. These features' scope, visibility, and lifetime enable us to track a specific variable's existence during a program's runtime. Auto, register, extern, static, and mutable are 5 storage classes in C++.

What is polymorphism? What is a virtual function?

A special kind of function called a virtual function returns the most derived version of the function between the base class and the derived class. Polymorphism is the name given to this ability. Runtime polymorphism is the primary purpose of the virtual function.

What are pure virtual functions

A pure virtual function is a function that has no definition in the base class. Its definition lies only in the derived class

What happens in recursive function calls? What are the drawbacks?

There is a “call stack”, which recursive functions utilize. The function that is called by a program is placed on top of the call stack. A bookcase is similar to this. Each element is added one at a time. Then, whenever you are prepared to remove something, you always remove the item at the top.

Recursion repeatedly invokes the function calls, so consequently, there is an overhead of method calls, which is expensive in terms of processor time and memory space.

Function pointers and uses of function pointer

A variable that stores the address of a function that can be called later through that function pointer is called a function pointer. A function pointer points to code, not data. Typically a function pointer stores the start of executable code.

Many object-oriented programming paradigms in C++ are implemented using the function pointer in C., like polymorphism and virtual function.

What is the difference between heap and stack memory

Here is the difference between heap and stack memory.

• Stack memory is only used by one execution thread, whereas all application components use heap memory.

• The reference to an object is always stored in stack memory and the heap space whenever it is created. Local primitive variables and reference variables to objects in heap space are the only things in stack memory.

• Stack memory cannot be accessed by other threads, whereas objects stored in a heap can be accessed globally.

Explain the use cases of pre-order, post-order, and in-order in binary tree traversals.

Pre-order tree traversals are used to create a copy of the tree. Post-order is used to delete a tree, and in-order gives the nodes in decreasing order.

What is a process, Thread? What is multithreading?

A program in its execution mode is known as a process. A thread is an independent unit of execution created within the context of a process. When multiple threads are executing in a process simultaneously, we call it multithreading.

What are sockets, pipes, and inter-process communication?

A pipe is a means of communication between two or more processes that are connected or interconnected. It could be communication between the child's and parent's processes or within one process. One process writes into the pipe, and the other reads from the pipe to communicate.

The socket provides two-way, point-to-point communication between two processes. A name can be tied to sockets, which are communication endpoints. One or more processes can be linked to a socket.

A situation in which two or more processes communicate with one another is referred to as "interprocess communication." The processes can be located on the same computer or separate computers connected by a network.

What is a kernel, and list down the responsibility?

The kernel is the operating system's heart. The kernel of the operating system handles all operations. The kernel takes care of device management, resource management, memory management, I/O communication, and interrupt handling.

What is an interrupt?

An interrupt is a signal sent out by a computer's program or a device attached to it. The operating system (OS) must stop to decide what to do next. Service or the current process is temporarily halted or terminated by an interruption.

What gates would you use to make a full adder?

2 Half Adder and an OR gate are required to make a full adder.

What is a CPU pipeline? How does it work?

The process of accumulating instructions from the processor through a pipeline is called a CPU pipeline. It makes it possible to store and carry out instructions systematically.

By dividing incoming instructions into a series of sequential steps performed by various processor units with different parts of instructions processed in parallel, pipelining attempts to keep every part of the processor busy with some instruction.

What is the major difference between HTTP GET and HTTP Post

In the GET method, we cannot send large amounts of data; rather, limited data is sent because the request parameter is appended to the URL. In the POST method, a large amount of data can be sent because the request parameter is appended to the body. The POST method is more secure than the GET method.

Other than these questions, Nvidia also asks questions on HR, puzzles, and coding.