100+ GenC Interview Questions and Answers

Calculate the time taken by a train to pass through a tunnel given its speed, length, and the tunnel's length.

• Convert the speed of the train from mph to miles per minute.

• Calculate the time taken by the front of the train to enter the tunnel.

• Calculate the time taken by the rear of the train to exit the tunnel.

• Subtract the time taken by the front from the time taken by the rear to get the total time taken.

• Add the units to the final answer.

Code has a syntax error in printf statement. It should have a placeholder for user input.

• Add a placeholder in printf statement for user input.

• Use %d instead of 4589 in printf statement.

Data structures are ways to organize and store data. Two examples are arrays and linked lists.

• Arrays are a collection of elements of the same data type, stored in contiguous memory locations.

• Linked lists are a collection of nodes, each containing data and a reference to the next node in the list.

A function is a block of code that performs a specific task and can be called multiple times.

• Functions help in modularizing code and making it reusable.

• Functions can take parameters and return values.

• Functions can be defined in different ways such as function declaration, function expression, arrow function, etc.

• Examples of functions include Math.max(), console.log(), and document.getElementById().

A loop is a programming construct that repeats a set of instructions until a certain condition is met.

• Loops are used to automate repetitive tasks in programming.

• There are three types of loops: for, while, and do-while.

• For example, a for loop can be used to iterate over an array and perform a certain action on each element.

• A while loop can be used to repeat a set of instructions until a certain condition is no longer true.

• A do-while loop is similar to a while loop, but it alwa...read more

Void refers to a state of emptiness or absence of something.

• It can refer to a physical space that is empty or without matter.

• It can also refer to a lack of something, such as a void in one's life or a void in a contract.

• In programming, void is a data type used to indicate that a function does not return a value.

• In law, a void contract is one that is not legally binding.

• In physics, a vacuum is often referred to as a void.

Google Facilitator Ready program is a training program that equips individuals with skills to facilitate Google's workshops and events.

• The program provides training on how to facilitate Google's workshops and events

• Participants learn how to create engaging content and deliver it effectively

• The program also covers how to manage logistics and handle participant questions

• Upon completion, participants receive a certificate and are eligible to facilitate Google's events

• Examples of...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, but multiple foreign keys.

• Example: CustomerID in Orders table is a foreign key that references the Customer table's primary key.

• Primary key is denoted by a key symbol, while foreign key is ...read more

Supervised learning uses labeled data to train models while unsupervised learning uses unlabeled data.

• Supervised learning requires a target variable to be predicted while unsupervised learning does not.

• Supervised learning algorithms include regression, classification, and decision trees while unsupervised learning algorithms include clustering and association.

• Examples of supervised learning include predicting housing prices and classifying emails as spam or not, while example...read more

The four pillars of OOPS are Abstraction, Encapsulation, Inheritance, and Polymorphism.

• Abstraction: Hiding implementation details and showing only necessary information.

• Encapsulation: Binding data and functions together and restricting access to them.

• Inheritance: Creating new classes from existing ones, inheriting properties and methods.

• Polymorphism: Ability of objects to take on multiple forms or behaviors.

I would adapt by learning Java and leveraging my programming skills to transition smoothly.

• I would start by taking online courses or tutorials to quickly learn Java syntax and best practices.

• I would also seek guidance from colleagues or mentors who are experienced in Java programming.

• I would practice coding in Java by working on small projects or contributing to open source projects.

• I would stay updated on Java trends and advancements to ensure I am proficient in the language...read more

Data structures are ways of organizing and storing data in a computer so that it can be accessed and used efficiently.

• Data structures can be linear or non-linear

• Examples of linear data structures include arrays, linked lists, and stacks

• Examples of non-linear data structures include trees and graphs

• Choosing the right data structure is important for efficient algorithm design

The latest technologies include AI, blockchain, 5G, quantum computing, and IoT.

• AI - machine learning, natural language processing

• Blockchain - decentralized ledgers, smart contracts

• 5G - faster internet speeds, low latency

• Quantum computing - exponential processing power

• IoT - interconnected devices, data collection

Instance variables are declared in a class and can be accessed by any method in the class. Local variables are declared in a method and can only be accessed within that method.

• Instance variables are declared at the class level, while local variables are declared within a method.

• Instance variables can be accessed by any method in the class, while local variables can only be accessed within the method they are declared in.

• Instance variables are initialized to default values, wh...read more

I am comfortable in multiple programming languages including Python, Java, and C++.

• Python

• Java

• C++

The conclusions cannot be determined from the given statements.

• Statement P and Q do not have a direct relationship.

• There is no information given about the relationship between calculators and cameras.

• Therefore, neither conclusion can be drawn.

Code to print first 10 elements of Fibonacci series.

• Declare variables for first two numbers of the series

• Use a loop to generate the next numbers in the series

• Print the first 10 numbers of the series

Python has several built-in data types including numeric, sequence, and mapping types.

• Numeric types include integers, floats, and complex numbers.

• Sequence types include lists, tuples, and strings.

• Mapping types include dictionaries.

• Boolean type is also available.

• Type() function can be used to determine the data type of a variable.

while loop checks condition before executing, do while loop executes at least once before checking condition.

• while loop is entry controlled loop, do while loop is exit controlled loop

• while loop may not execute at all if condition is false initially, do while loop executes at least once

• while loop syntax: while(condition){ //code to execute }

• do while loop syntax: do{ //code to execute }while(condition);

There are four types of Joins in SQL: Inner Join, Left Join, Right Join, and Full Outer Join.

• Inner Join returns only the matching rows from both tables.

• Left Join returns all the rows from the left table and matching rows from the right table.

• Right Join returns all the rows from the right table and matching rows from the left table.

• Full Outer Join returns all the rows from both tables, with NULL values in the columns where there is no match.

• Examples: SELECT * FROM table1 INNER...read more

Conclusion II follows from the given statements.

• Statement P and Q do not provide enough information to conclude that all cakes are bags.

• However, it can be concluded that some bags are cakes as some bags are hot and all hots are cakes.

• Therefore, Conclusion II is true while Conclusion I is false.

C++ is an extension of C with object-oriented programming features.

• C++ supports classes and objects while C does not.

• C++ has better support for polymorphism and inheritance.

• C++ has a standard template library (STL) for data structures and algorithms.

• C++ allows function overloading and default arguments.

• C++ has exception handling for error management.

• C++ is more complex and has a steeper learning curve than C.

A program to reverse a given string.

• Create an empty string to store the reversed string

• Loop through the original string from the end to the beginning

• Add each character to the new string

• Return the new string

Cognizant is a multinational technology company providing digital, technology, consulting, and operations services.

• Founded in 1994 and headquartered in Teaneck, New Jersey

• Has a global presence with operations in over 40 countries

• Offers services in areas such as artificial intelligence, cloud computing, and cybersecurity

• Works with clients across various industries including healthcare, finance, and retail

• Has over 300,000 employees worldwide

C and C++ are programming languages. C++ is an extension of C with additional features.

• C is a procedural language while C++ is an object-oriented language.

• C++ supports features like classes, inheritance, and polymorphism which are not present in C.

• C++ also has better support for templates and exception handling compared to C.

• C++ code can also be written in a more modular and reusable way compared to C.

• C++ is often used for developing complex software systems like operating sy...read more

Java has no pointers for safety reasons and to simplify memory management.

• Java uses references instead of pointers to avoid security vulnerabilities.

• Pointers can cause memory leaks and dangling references, which Java avoids.

• Java's garbage collector automatically manages memory, making pointers unnecessary.

• Example: Java's NullPointerException is a result of using a null reference, not a pointer.

• Example: C++ allows pointer arithmetic, which can lead to buffer overflows and othe...read more

Yes, Python is case sensitive. Decorators are functions that modify the behavior of other functions.

• Python is case sensitive, meaning that 'hello' and 'Hello' are two different variables

• Decorators are functions that take another function as input and extend its functionality

• They are denoted by the '@' symbol and placed above the function definition

• Example: @decorator_function def my_function(): # code here

• Common decorators include @staticmethod, @classmethod, and @property