10+ TCS Associate Interview Questions and Answers

Creating and working with DataFrames in PySpark

• To create a DataFrame in PySpark, you can use the createDataFrame() method from the SparkSession object.

• DataFrames are structured and immutable collections of data, while Datasets are distributed collections of data with additional features like type-safety.

• To perform joins in PySpark DataFrames, you can use the join() method with the appropriate join type (inner, outer, left, right).

• Common DataFrame operations include filtering,...read more

Basic accounting concepts and journal entries explained

• Golden rules of accounting are: Debit the receiver, Credit the giver; Debit what comes in, Credit what goes out; Debit expenses and losses, Credit income and gains

• Accrual accounting recognizes revenue and expenses when they are incurred, regardless of when cash is exchanged. Cash accounting recognizes revenue and expenses when cash is actually received or paid.

• Journal entries are used to record transactions in the account...read more

Good candidates should possess qualities like adaptability, strong work ethic, communication skills, and problem-solving abilities.

• Adaptability to changing work environments and situations

• Strong work ethic and dedication to the job

• Effective communication skills to work well with colleagues and clients

• Problem-solving abilities to tackle challenges and find solutions

• Positive attitude and willingness to learn and grow

• Team player mentality to collaborate with others towards commo...read more

The latest embedded systems are focused on IoT, AI, and machine learning.

• Embedded systems are becoming more connected to the internet of things (IoT)

• AI and machine learning are being integrated into embedded systems for improved performance

• Low-power consumption and high-performance processors are being developed for embedded systems

• Examples include Amazon Echo, Nest Thermostat, and Fitbit

Corruption is the misuse of power for personal gain, leading to unfair advantages and negative consequences for society.

• Corruption can take many forms, such as bribery, embezzlement, nepotism, and favoritism.

• It can benefit individuals or groups who engage in it, such as politicians, businesspeople, or public officials, by giving them access to resources, contracts, or positions they would not otherwise have.

• However, corruption undermines the rule of law, erodes public trust, ...read more

PLC stands for Programmable Logic Controller, which is a digital computer used for automation of electromechanical processes. Communication refers to the exchange of information between two or more parties.

• PLC is a specialized computer used in industrial control systems to automate processes.

• PLCs are programmed using ladder logic or other programming languages to control machinery and processes.

• Communication involves the exchange of data or information between two or more dev...read more

Python can be used to create calculator programs with its built-in math functions and GUI libraries.

• Python's math module provides functions for basic arithmetic operations like addition, subtraction, multiplication, and division.

• GUI libraries like Tkinter can be used to create a user-friendly interface for the calculator program.

• Python's eval() function can be used to evaluate mathematical expressions entered by the user.

• Example: https://www.geeksforgeeks.org/python-simple-gu...read more

SCADA stands for Supervisory Control and Data Acquisition, used for monitoring and controlling industrial processes. Robotics involves designing, building, and operating robots.

• SCADA is a system used to monitor and control industrial processes such as manufacturing, production, and distribution.

• It collects data from sensors and equipment in real-time, allowing operators to make informed decisions and adjustments.

• Robotics involves designing, building, and operating robots to p...read more

Document splitting is a process of splitting a single document into multiple documents based on certain criteria.

• It is used in financial accounting to split a document into multiple line items for different cost centers or profit centers.

• It helps in better analysis and reporting of financial data.

• Document splitting can be based on various criteria such as business area, profit center, segment, etc.

• For example, a single invoice can be split into multiple line items based on th...read more

An abstract class is a class that cannot be instantiated and is used as a base class for other classes.

• An abstract class can have abstract methods that must be implemented by its subclasses.

• Abstract classes can have non-abstract methods and fields.

• An abstract class can be used to define a common interface for a group of related classes.

• Example: Animal is an abstract class and Dog, Cat, and Bird are its subclasses.

• Example: Shape is an abstract class and Circle, Square, and Tri...read more

Python code for a given situation

• Understand the problem statement

• Identify the required inputs and outputs

• Write the code using appropriate syntax and logic

I am a highly motivated individual with a passion for learning and a strong work ethic.

• I have a Bachelor's degree in Computer Science from XYZ University.

• I have completed several internships in software development, including one at ABC Company where I worked on a team to develop a mobile app.

• I am proficient in several programming languages, including Java, Python, and C++.

• I am a quick learner and enjoy taking on new challenges.

• In my free time, I enjoy hiking and playing guit...read more

Malwatizing is not a known term or concept.

Java code to check if a given string is a palindrome or not.

• Create a function that takes a string as input

• Use two pointers, one starting from the beginning and one from the end, to compare characters

• Ignore spaces and punctuation marks when comparing characters

• Return true if the string is a palindrome, false otherwise