Nokia Intern Interview Questions and Answers

Python lists are versatile data structures that can store multiple items in a single variable, allowing for easy manipulation and access.

• Lists are created using square brackets: example: my_list = [1, 2, 3, 4]

• You can access elements by index: example: my_list[0] returns 1

• Lists are mutable, meaning you can change their content: example: my_list[1] = 5 changes the second element to 5

• You can add elements using append...read more

Python supports object-oriented programming through classes and objects.

• Define a class using the 'class' keyword

• Create objects of the class using the class name followed by parentheses

• Use inheritance, encapsulation, and polymorphism to implement OOP concepts

• Example: class Person: def __init__(self, name, age): self.name = name self.age = age person1 = Person('Alice', 30)

To work on a Linux VM, you need to first set up the VM, install necessary software, configure network settings, and access it remotely.

• Set up the Linux VM using a virtualization software like VirtualBox or VMware.

• Install the Linux operating system on the VM.

• Configure network settings such as IP address, subnet mask, and gateway.

• Access the Linux VM remotely using SSH or a remote desktop protocol.

• Install necessary s...read more

Network layers organize communication protocols into manageable levels, ensuring efficient data transmission across networks.

• The OSI model has 7 layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• The TCP/IP model has 4 layers: Link, Internet, Transport, and Application.

• The Physical layer deals with hardware transmission, e.g., cables and switches.

• The Network layer routes data u...read more

Primary key uniquely identifies a record in a table, while foreign key refers to a field in another table.

• Primary key is used to enforce data integrity and ensure uniqueness of records.

• Foreign key is used to establish a relationship between two tables.

• A table can have only one primary key, while it can have multiple foreign keys.

• Primary key is always indexed, while foreign key may or may not be indexed.

• Example: In...read more

Garbage collection is an automatic memory management process that frees up memory occupied by objects that are no longer in use.

• Garbage collection is a process of identifying and freeing up memory that is no longer in use by the program.

• It helps prevent memory leaks and improves program performance.

• Examples of garbage collection include Java's automatic garbage collection and Python's reference counting and garbag...read more

A stack is a linear data structure that follows the Last-In-First-Out (LIFO) principle.

• Applications include function call stack, undo-redo operations, infix to postfix conversion, and backtracking algorithms.

• Push and pop operations are used to add and remove elements from the stack, respectively.

• Fibonacci series can be implemented using a stack or recursion.

• Stacks can be implemented using arrays or linked lists.