TCS Interview Questions, Process, and Tips

Q1. Multi threading
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Q2. Hasmap vs hashtable
Ans. 
HashMap and HashTable are both data structures in Java used to store key-value pairs, but HashMap is not synchronized and allows null keys/values.
• HashMap is not synchronized, while HashTable is synchronized.

• HashMap allows null keys and values, while HashTable does not.

• HashMap is generally preferred over HashTable for non-thread-safe applications.

• HashMap is part of the Java Collections Framework, while HashTable is a le
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Q3. Microservices architecture
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Q1. Java8,Stream api
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Q2. About last project
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Difficulty level was moderate, If you know basics .

There was 2 questions. Both was from string and array concept. Please solve some tricking and difficulties level was low and moderate for 2nd question.

Q1. Basics of programming languages waht you know and mentined in resume. They will make you write some basic prog in different ways.
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Q2. String array differnce
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Q1. What's SQL and why we use it?
Ans. 
SQL is a programming language used for managing and manipulating relational databases.
• SQL stands for Structured Query Language

• It is used to communicate with databases to perform tasks such as querying data, updating data, and creating databases

• Examples of SQL commands include SELECT, INSERT, UPDATE, DELETE

• SQL is essential for managing large amounts of data efficiently
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Aptitude Moderate level questions and 2 coding questions were asked

Q1. Asking about BRMs, mimix,PTf
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Q1. Salary package discuss
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