L&T Technology Services Software Developer Interview Questions and Answers

To migrate from one db to another in an application, you can use tools like ETL, scripts, or ORM frameworks.

• Use ETL tools like Talend or Informatica to extract data from the source db, transform it, and load it into the target db.

• Write scripts in languages like Python or SQL to export data from the source db and import it into the target db.

• Utilize ORM frameworks like Hibernate or Entity Framework to abstract the ...read more

Bitwise operators in C are used to perform operations at the bit level.

• Bitwise AND operator (&) - performs a bitwise AND operation on two operands.

• Bitwise OR operator (|) - performs a bitwise OR operation on two operands.

• Bitwise XOR operator (^) - performs a bitwise XOR operation on two operands.

• Bitwise NOT operator (~) - inverts the bits of the operand.

• Bitwise left shift operator (<<) - shifts the bits of the lef...read more

A program on function pointers for an array of 10 elements in C.

• Declare an array of function pointers with a size of 10.

• Assign different functions to each element of the array.

• Invoke the functions using the function pointers.

This program sorts a binary string of 0's and 1's into a format with all 0's followed by all 1's.

• Use a simple counting method to count 0's and 1's.

• Create a new array to store the sorted result.

• Fill the new array with counted 0's followed by counted 1's.

• Example: For input '1001011', output should be '0001111'.

Java is a high-level, object-oriented programming language used to develop applications for various platforms.

• Java is platform-independent and can run on any device with a Java Virtual Machine (JVM)

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

• Java is known for its security features and robustness

• It follows the Write Once, Run Anywhere (WORA) principle

• Java has a vast library of pre-bui...read more

Python is a high-level, interpreted programming language known for its simplicity, readability, and versatility.

• Python is used for web development, data analysis, artificial intelligence, and more.

• It has a large standard library and supports multiple programming paradigms.

• Python code is often shorter and easier to read than other languages.

• It uses indentation to indicate code blocks instead of curly braces or keyw...read more