TCS Cyber Security Consultant Interview Questions and Answers for Experienced

Test has 3 separated section - numerical section, Pesudo code - mcq and comprehension.

Q1. Interviewer asked about past projects and basics of DS and preferred programming language.
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Q1. HR round has usual questions- Your Hobbies. Strength and weakness
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Q1. Write a program to find out given number is palindrome number or not
Ans. 
Program to check if a given number is a palindrome or not.
• Convert the number to a string

• Reverse the string

• Compare the reversed string with the original string

• If they are equal, the number is a palindrome
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Q2. Write Sql query for join
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SQL query for join
• Use JOIN keyword to combine rows from two or more tables based on a related column

• Specify the columns to be selected using SELECT keyword

• Use ON keyword to specify the join condition

• Types of join: INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL OUTER JOIN

• Example: SELECT * FROM table1 JOIN table2 ON table1.column = table2.column
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Q3. Event loop in nodejs
Ans. 
Event loop is a mechanism in Node.js that allows non-blocking I/O operations to be performed efficiently.
• Event loop is responsible for handling all the I/O operations in Node.js

• It is a single-threaded loop that constantly checks for new events in the event queue

• When an event is detected, the corresponding callback function is executed

• Event loop allows Node.js to handle multiple requests simultaneously without blocking ...read more
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Q1. How to write test cases in nodejs
Ans. 
Test cases in Node.js can be written using testing frameworks like Mocha, Jest, and Chai.
• Choose a testing framework that suits your project requirements

• Write test cases for each function or module in your code

• Use assertions to check if the expected output matches the actual output

• Mock external dependencies to isolate the code being tested

• Run tests using the testing framework's command line interface or integration with
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Q2. Difference between java and nodejs
Ans. 
Java is a statically typed language while Node.js is a runtime environment for JavaScript.
• Java is compiled while Node.js is interpreted

• Java is better for large-scale enterprise applications while Node.js is better for real-time applications

• Java has a larger community and more libraries while Node.js has a simpler and more lightweight architecture

• Java is used for Android app development while Node.js is used for server-...read more
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Q3. What is agile process
Ans. 
Agile process is an iterative approach to software development that emphasizes flexibility, collaboration, and customer satisfaction.
• Agile process involves breaking down a project into smaller, manageable chunks called sprints

• Each sprint involves planning, designing, coding, testing, and reviewing

• Agile process emphasizes continuous feedback and adaptation to changing requirements

• Examples of agile methodologies include
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Q4. Which Deployment method/tool used for code deployment
Ans. 
There are various deployment methods/tools available such as Jenkins, Ansible, Docker, Kubernetes, etc.
• Jenkins is a popular tool for continuous integration and deployment

• Ansible is a configuration management tool that can also be used for deployment

• Docker and Kubernetes are containerization tools that can simplify deployment

• Deployment methods can vary depending on the technology stack and infrastructure

• Deployment can b
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Q5. Mongodb database advantage and disadvantage
Ans. 
MongoDB is a NoSQL database with flexible schema and high scalability, but lacks transaction support.
• Advantages: flexible schema, high scalability, easy to use, supports sharding and replication

• Disadvantages: lacks transaction support, not suitable for complex transactions, limited query functionality compared to SQL databases

• Example: MongoDB is used by companies like eBay, Forbes, and The Guardian for their high scala
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Q1. Why are you looking for a change?
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Q2. What are your salary expectations?
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