Lenovo Backend Developer Interview Questions and Answers

Q1. Lifestyle of software development
Ans. 
Software development lifestyle involves continuous learning, problem-solving, collaboration, and adapting to new technologies.
• Continuous learning is essential to stay updated with new technologies and best practices.

• Problem-solving skills are crucial for debugging and finding efficient solutions to complex problems.

• Collaboration with team members helps in sharing knowledge, brainstorming ideas, and improving code quali...read more
Answered by AI
Add your answer
Q2. Real time example of class inheritance
Ans. 
Class inheritance allows a subclass to inherit properties and methods from a superclass.
• Subclass can access all public and protected members of superclass.

• Subclass can override methods of superclass.

• Example: Animal class can be superclass, with Dog and Cat classes as subclasses inheriting properties and methods.
Answered by AI
Add your answer
Q3. Agile methodologies and waterfall methodology
Add your answer

Q1. What is structure padding ?
Ans. 
Structure padding is the process of adding empty bytes to a structure to align its data members on memory boundaries.
• Padding is added to ensure that each data member in a structure starts at a memory address that is a multiple of its size.

• Padding is necessary for performance optimization and to prevent memory access violations.

• For example, if a structure has a char followed by an int, padding may be added between them
Answered by AI
Add your answer
Q2. What is translation unit ?
Ans. 
A translation unit is a source file along with all the headers and source files included in it.
• Translation unit is the smallest unit of compilation in C++.

• It consists of a source file and all the header files and source files included in it.

• Each translation unit is compiled separately before being linked together.

• Translation units help in organizing and modularizing code.

• Example: If a.cpp includes b.h and c.cpp, then t...read more
Answered by AI
Add your answer

Q1. Basic Coding questions
Add your answer

Mcqs on java, angular, devops

Q1. Java 8 features
Add your answer
Q2. Microservices communication in spring boot
Add your answer

Q1. Managerial question
Add your answer

Q1. Java ,SpringBoot,Hibernate
Add your answer
Q2. There are three Rounds there
Add your answer

Q1. Logical codeing
Add your answer
Q2. Prepare well for basic concepts
Add your answer

2 DSA questions from leetcode

Q1. Valid sudoko from leetcode
Add your answer
Q2. DBMS Related primary key and cadidate key
Add your answer

Q1. What is asynchronous And synchronous
Ans. 
Asynchronous and synchronous are programming concepts that determine how tasks are executed.
• Synchronous tasks are executed one after the other, in a sequential manner.

• Asynchronous tasks can be executed simultaneously, without waiting for the previous task to complete.

• Synchronous tasks are easier to understand and debug, while asynchronous tasks are more efficient and can improve performance.

• Examples of synchronous task...read more
Answered by AI
Add your answer

1. Leetcode question level hard
2. SQL easy question

Two questions from hacker rank, one is from SQL and another one is DSA. SQL is pretty easy but DSA questions is from hard section, able to pass 3 test cases out of 15.