L&T Technology Services Senior Software Engineer Interview Questions, Process, and Tips

Q1. RPA life cycle,PDD,SDD,REframework,Orchastrator
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Q2. Queue,Asset,Argument,exception
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Q1. Similar to above question and project experiance
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Q1. Salary discussion
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Round duration - 60 minutes
Round difficulty - Easy

This was a technical round with questions on C/C++, Linux and Networking.

Q1. What is the difference between TCP and UDP?
Ans. 
TCP is a connection-oriented protocol that ensures reliable data delivery, while UDP is a connectionless protocol that focuses on speed.
• TCP is reliable and ensures data delivery by establishing a connection between sender and receiver.

• UDP is faster but less reliable as it does not establish a connection before sending data.

• TCP uses sequencing and acknowledgment of data packets for reliable delivery.

• UDP is used for real...read more
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Q2. What is an inline function in C++?
Ans. 
An inline function in C++ is a function that is expanded in place at the point of call, rather than being called like a regular function.
• Inline functions are typically small and simple, as they are expanded in place at each call site.

• They can improve performance by reducing the overhead of function calls.

• Example: inline int square(int x) { return x * x; }
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Q3. What is the difference between a structure and a union in C++?
Ans. 
Structure is a data type that allows different data types to be grouped together, while union is a data type that allows different data types to share the same memory location.
• Structures allocate memory for each member separately, while unions share memory for all members.

• Structures are used when different data types need to be stored together, while unions are used when only one type of data needs to be stored at a ti...read more
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Q4. What is the difference between C and C++?
Ans. 
C is a procedural programming language while C++ is a multi-paradigm programming language with support for object-oriented programming.
• C is a procedural programming language, focusing on functions and procedures.

• C++ is a multi-paradigm programming language, supporting procedural, object-oriented, and generic programming.

• C does not support classes and objects, while C++ does.

• C++ has features like inheritance, polymorphi...read more
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Q5. What are the OOP concepts in C++?
Ans. 
OOP concepts in C++ include classes, objects, inheritance, polymorphism, encapsulation, and abstraction.
• Classes: Blueprint for creating objects with data and functions.

• Objects: Instances of classes that encapsulate data and behavior.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Polymorphism: Ability to process objects differently based on their data types.

• Encapsulation: Bundling data...read more
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Q6. What is a daemon in the context of Linux?
Ans. 
A daemon in the context of Linux is a background process that runs continuously to perform specific tasks.
• Daemons do not have a controlling terminal.

• They typically start at system boot and run until the system is shut down.

• Examples include the Apache web server daemon (httpd) and the SSH daemon (sshd).
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Q7. What does the grep command do?
Ans. 
The grep command is used to search for specific patterns in text files.
• Used to search for a specific pattern in a file

• Can be used with regular expressions for more complex searches

• Can be used in combination with other commands like 'ls' or 'cat'

• Example: grep 'search_term' file.txt
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Round duration - 30 minutes
Round difficulty - Easy

This was a typical HR round.

Q1. Regarding C and linux
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Q1. Regarding project related
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Q1. Salary discussion and personal
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Logical reasoning, mathematics,quality,assurance, technical,language

Q1. On tool which you have prepared
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