100+ fresher Interview Questions and Answers

Class is a blueprint for creating objects. Objects are instances of a class that have their own unique properties and behaviors.

• A class is a template or blueprint for creating objects

• An object is an instance of a class with its own unique properties and behaviors

• Classes define the properties and methods that objects of that class will have

• Objects can interact with each other through their methods and properties

• Example: A class 'Car' can have properties like 'color', 'model', ...read more

Move zeros to the end of the array without changing the order.

• Iterate through the array and count the number of zeros

• Create a new array with all the non-zero elements

• Append the counted number of zeros at the end of the new array

Syntax for while loop and for loop

• For loop: for(initialization; condition; increment/decrement){ //code block }

• While loop: while(condition){ //code block }

• Example: for(int i=0; i<5; i++){ cout<

• Example: int i=0; while(i<5){ cout<

A bank is a financial institution that accepts deposits from the public and creates credit.

• Banks provide various financial services such as loans, credit cards, and savings accounts.

• They also offer investment services like mutual funds and stocks.

• Banks make money by charging interest on loans and by investing the deposits they receive.

• Examples of banks include JPMorgan Chase, Bank of America, and Wells Fargo.

A program to check if a given number is prime or not.

• Take input from user

• Check if the number is less than 2, then it is not a prime number

• Loop through numbers from 2 to n-1 and check if n is divisible by any of them

• If n is divisible by any number, then it is not a prime number

• If n is not divisible by any number, then it is a prime number

Drop, delete, and truncate are SQL commands used to remove data from a table, but they differ in their functionality and implications.

• DROP command is used to remove a table or database from the database schema. It deletes the table definition and all its data.

• DELETE command is used to remove specific rows from a table based on a condition. It does not delete the table structure.

• TRUNCATE command is used to remove all rows from a table, but it does not delete the table structur...read more

Credit is a financial term that refers to the ability of a borrower to obtain goods or services before payment, based on trust.

• Credit is a form of borrowing money or obtaining goods or services with the promise to pay for them in the future.

• It is based on trust and the belief that the borrower will fulfill their payment obligations.

• Credit can be provided by banks, financial institutions, or individual lenders.

• Examples of credit include credit cards, loans, mortgages, and line...read more

Pointer is a variable that stores the memory address of another variable in C programming language.

• Pointers are used to manipulate data structures like arrays, linked lists, and trees.

• They can be used to pass values by reference to functions.

• Pointer arithmetic can be performed to access elements of an array.

• Example: int *ptr; ptr = # printf("%d", *ptr);

• Example: void swap(int *a, int *b) { int temp = *a; *a = *b; *b = temp; }

• Example: int arr[5] = {1, 2, 3, 4, 5}; int *ptr = ar...read more

Claims are requests made by individuals or companies to an insurance company for payment of benefits or services covered under an insurance policy.

• Claims are typically submitted after a covered event or service has occurred.

• Insurance companies review claims to determine if they are valid and covered under the policy.

• Claims can be related to various types of insurance such as health, auto, property, or liability.

• Examples of claims include medical bills submitted to health insu...read more

HRM is the process of managing human resources to achieve organizational goals.

• HRM involves recruitment, selection, training, and development of employees.

• It also includes performance management, compensation, and benefits administration.

• HRM aims to create a positive work environment and ensure employee satisfaction.

• Effective HRM can lead to increased productivity and profitability for the organization.

• Examples of HRM practices include job analysis, job design, and succession...read more

Different types of welding include MIG, TIG, stick, flux-cored, and oxy-acetylene welding.

• MIG welding (Metal Inert Gas) uses a wire electrode and shielding gas to join metal pieces together.

• TIG welding (Tungsten Inert Gas) uses a tungsten electrode and inert gas to create a strong weld.

• Stick welding (Shielded Metal Arc Welding) uses a flux-coated electrode to create a weld.

• Flux-cored welding uses a tubular wire electrode with flux inside to shield the weld.

• Oxy-acetylene weldi...read more

A savings account is a type of bank account where you can deposit and withdraw money while earning interest on the balance.

• Savings accounts are typically used for short-term savings goals

• They usually offer lower interest rates than other types of accounts

• Some savings accounts may have minimum balance requirements or fees

• Interest earned on savings accounts is usually taxable

• Examples of savings accounts include high-yield savings accounts and money market accounts

A motor is a device that converts electrical energy into mechanical energy to produce motion.

• Motors are commonly used in various applications such as electric vehicles, industrial machinery, and household appliances.

• They work based on the principle of electromagnetic induction.

• There are different types of motors, including DC motors, AC motors, and stepper motors.

• Examples of motors include the engine in a car, the fan in a refrigerator, and the motor in a washing machine.

Java is a high-level programming language used for developing applications and software.

• Java is object-oriented and platform-independent.

• It is used for developing web, mobile, and desktop applications.

• Java code is compiled into bytecode and executed on a Java Virtual Machine (JVM).

• Java has a vast library of pre-built classes and APIs.

• Popular frameworks and tools for Java development include Spring, Hibernate, and Maven.

OOPS stands for Object-Oriented Programming System. It is a programming paradigm based on the concept of objects.

• OOPS is based on four main concepts: encapsulation, inheritance, polymorphism, and abstraction.

• Encapsulation is the process of hiding the implementation details of an object from the outside world.

• Inheritance allows a class to inherit properties and methods from another class.

• Polymorphism allows objects of different classes to be treated as if they were of the same...read more

Collections refer to the process of gathering and organizing items or objects into a group.

• Collections can include items such as books, art, antiques, coins, stamps, etc.

• People often collect items based on personal interest, hobby, or investment purposes.

• Collections can be displayed in museums, galleries, private homes, or online platforms.

• Some famous collections include the British Museum in London, the Louvre in Paris, and the Smithsonian in Washington, D.C.

A call center is a centralized office where customer service representatives handle incoming and outgoing calls. BPO stands for Business Process Outsourcing, which involves outsourcing non-core business functions to a third-party provider.

• Call centers are used by companies to handle customer inquiries, complaints, and support.

• BPO companies provide a range of services such as customer support, technical support, data entry, and back-office operations.

• Call centers and BPOs are ...read more

Encapsulation is the process of hiding implementation details while abstraction is the process of hiding unnecessary details.

• Encapsulation is achieved through access modifiers like public, private, and protected.

• Abstraction is achieved through abstract classes and interfaces.

• Encapsulation protects the data from outside interference while abstraction focuses on the essential features of an object.

• Example of encapsulation: A class with private variables and public methods to ac...read more

Banking refers to the business of accepting deposits and lending money.

• Banking involves financial transactions such as deposits, withdrawals, and loans.

• Banks provide various services such as savings accounts, checking accounts, credit cards, and mortgages.

• Banks also offer investment services such as mutual funds, stocks, and bonds.

• Banking is regulated by government agencies to ensure safety and stability of the financial system.

• Examples of banks include JPMorgan Chase, Bank o...read more

Insurance is a financial protection plan that provides coverage against potential losses or damages.

• Insurance involves a contract between the insurer and the insured party.

• The insured pays a premium to the insurer in exchange for coverage against specified risks.

• Common types of insurance include health, life, auto, home, and travel insurance.

• Insurance helps individuals and businesses manage risks and protect themselves financially.

• Examples of insurance companies include State...read more

Credit control is the process of managing the credit extended to customers and ensuring timely payment.

• Credit control involves setting credit limits for customers based on their creditworthiness.

• It also includes monitoring customer payments and following up on overdue invoices.

• Credit control aims to minimize the risk of bad debts and improve cash flow for the company.

• Examples of credit control measures include sending payment reminders, imposing late fees, and restricting fur...read more

Stop loss treaty is a reinsurance agreement where the reinsurer agrees to cover losses above a certain threshold for the ceding company.

• Stop loss treaty is a type of reinsurance agreement.

• It sets a specific threshold for losses that the ceding company will cover on its own.

• The reinsurer agrees to cover losses above this threshold.

• It helps the ceding company limit its exposure to large losses.

• Example: If a ceding company has a stop loss treaty with a threshold of $1 million, t...read more

Compilation process in C programming involves preprocessing, compiling, assembling, and linking.

• Preprocessing: Includes inclusion of header files and macro expansions.

• Compiling: Translates source code into assembly code.

• Assembling: Converts assembly code into machine code.

• Linking: Combines object files and libraries to create an executable.

Our company has a hierarchical structure with clear levels of authority and responsibility.

• Our company has a CEO who oversees all operations

• There are several departments such as HR, Finance, Marketing, etc.

• Each department has a head who reports to the CEO

• There are managers and supervisors who oversee teams within each department

• Employees report to their respective managers or supervisors

Code to reverse a string

• Use a loop to iterate through the string

• Create a new string and add characters from original string in reverse order

• Return the reversed string

Count the repetition of letters in a string

• Iterate through the string and count the occurrences of each letter

• Store the counts in a dictionary or array

• Return the counts for each letter

RAM and storage are two types of computer memory. RAM is volatile and used for temporary storage, while storage is non-volatile and used for long-term storage.

• RAM stands for Random Access Memory and is used for temporary storage of data and instructions

• Storage is non-volatile and used for long-term storage of data and files

• Types of RAM include DDR, DDR2, DDR3, and DDR4

• Types of storage include HDD, SSD, and flash drives

The second smallest element in an array is found by sorting the array and selecting the element at index 1.

• Sort the array in ascending order

• Access the element at index 1 to get the second smallest element

Various factors can affect welding, including type of material, welding technique, welding environment, and equipment used.

• Type of material being welded (e.g. steel, aluminum, stainless steel)

• Welding technique used (e.g. MIG, TIG, stick)

• Welding environment (e.g. indoors, outdoors, underwater)

• Equipment used (e.g. welding machine, electrodes, shielding gas)

Native refers to something that is inherent or original to a particular place or culture.

• Native language refers to the language spoken by the people of a particular region.

• Native plants are those that are indigenous to a particular area.

• Native culture refers to the customs and traditions of a particular group of people.

• Native advertising is a type of advertising that blends in with the content of a website or platform.

• Native apps are mobile applications that are developed spe...read more

2-stroke engines have a power stroke every revolution, while 4-stroke engines have a power stroke every other revolution.

• 2-stroke engines have fewer moving parts and are lighter than 4-stroke engines.

• 2-stroke engines have a simpler design and are easier to maintain.

• 4-stroke engines are more fuel-efficient and produce less pollution than 2-stroke engines.

• Examples of 2-stroke engines include chainsaws and dirt bikes, while examples of 4-stroke engines include cars and lawnmower...read more

Net amount refers to the final amount after all deductions and additions have been made.

• Net amount is the total amount after all deductions and additions have been made.

• It is the amount that is actually received or paid.

• For example, if a person's salary is $5000 and deductions such as taxes and insurance amount to $1500, the net amount received by the person would be $3500.

C-level refers to top executives in a company who hold the highest level of decision-making authority.

• C-level executives are responsible for setting the company's strategic direction.

• They make critical decisions that impact the overall success of the organization.

• C-level executives typically include positions like CEO, CFO, CTO, etc.

• They have a broad understanding of the industry and possess strong leadership skills.

• C-level executives are accountable for the company's financi...read more

SQL syntax to create a table

• Use CREATE TABLE statement

• Specify table name and column names with data types

• Add constraints like primary key, foreign key, etc. if needed

Customer service is the support and assistance provided to customers before, during, and after a purchase.

• Customer service involves addressing customer queries, complaints, and feedback.

• It is important to provide prompt and courteous service to ensure customer satisfaction.

• Examples of customer service include answering phone calls, responding to emails, and providing technical support.

• Good customer service can lead to customer loyalty and positive word-of-mouth marketing.

VFS Global is a global outsourcing and technology services specialist for governments and diplomatic missions worldwide.

• Provides visa application services for various countries

• Offers passport and consular services

• Manages administrative and non-judgmental tasks related to visa, passport, identity management, and other citizen services

• Operates visa application centers in multiple countries

Jagged arrays are arrays of arrays where each element can be of different sizes.

• Jagged arrays are useful when you need to store arrays of different lengths.

• Each sub-array within a jagged array can have a different number of elements.

• Example: string[][] jaggedArray = new string[3][]; jaggedArray[0] = new string[2]; jaggedArray[1] = new string[3]; jaggedArray[2] = new string[4];

Resistance is the opposition to the flow of electric current in a circuit.

• Resistance is measured in ohms (Ω).

• It is caused by factors such as the material of the conductor, its length, and its cross-sectional area.

• Resistance can be calculated using Ohm's law: R = V/I, where R is resistance, V is voltage, and I is current.

• Higher resistance leads to lower current flow.

• Examples of resistors include light bulbs, heating elements, and electrical wires.

Promise in JavaScript is an object representing the eventual completion or failure of an asynchronous operation.

• Promises are used to handle asynchronous operations in JavaScript.

• A promise can be in one of three states: pending, fulfilled, or rejected.

• Promises can be chained using .then() method to handle success and failure cases.

• Example: const myPromise = new Promise((resolve, reject) => { ... });

Time complexity refers to the amount of time taken by an algorithm to run as the input size increases.

• It is a measure of how efficient an algorithm is.

• It is usually expressed in Big O notation.

• The lower the time complexity, the better the algorithm.

• For example, an algorithm with O(n) time complexity will take longer as the input size increases compared to an algorithm with O(1) time complexity.

Static keyword is used to declare a variable or method that belongs to the class and not to the instance of the class.

• Static variables are shared by all instances of a class

• Static methods can be called without creating an instance of the class

• Static blocks are used to initialize static variables

• Static keyword can also be used to create nested classes

• Example: public static int count;

I will draw a pyramid pattern using Python language.

• Use nested loops to print spaces and stars in a pyramid shape

• Start with 1 star at the top and increase stars in each row

• Decrease spaces in each row to create the pyramid shape

Social media refers to online platforms and websites that allow users to create and share content, as well as interact with others.

• Social media is a digital communication tool that enables users to connect and engage with others through various online platforms.

• It allows users to create and share content such as text, photos, videos, and links.

• Users can interact with each other by liking, commenting, and sharing content.

• Popular social media platforms include Facebook, Instagr...read more

My favorite dish is lasagna, with layers of pasta, meat, cheese, and tomato sauce baked to perfection.

• Lasagna is a classic Italian dish made with layers of pasta, meat (such as ground beef or sausage), cheese (like mozzarella and ricotta), and tomato sauce.

• It is typically baked in the oven until the cheese is melted and bubbly.

• Some variations of lasagna include vegetarian options with layers of vegetables or seafood instead of meat.

• Lasagna is often served with a side of garli...read more

RAM and ROM are two types of computer memory. RAM is volatile and used for temporary storage, while ROM is non-volatile and used for permanent storage.

• RAM stands for Random Access Memory and is used for temporary storage of data and programs

• ROM stands for Read-Only Memory and is used for permanent storage of data and programs

• RAM is volatile, meaning it loses its contents when the computer is turned off

• ROM is non-volatile, meaning it retains its contents even when the computer...read more

Manufacturing processes are methods used to create products from raw materials, involving various steps like casting, machining, welding, etc.

• Casting: pouring molten metal into a mold to create a specific shape

• Machining: removing material from a workpiece using cutting tools

• Welding: joining two or more pieces of metal together using heat or pressure

• Forming: shaping a material into a desired form through bending, rolling, etc.

• Additive manufacturing: building up layers of mater...read more

Sorting code arranges elements in a specific order.

• Choose a sorting algorithm based on the requirements

• Iterate through the array and compare adjacent elements

• Swap the elements if they are not in the desired order

• Repeat until the array is sorted