Technical Lead 2
Technical Lead 2 Interview Questions and Answers
Q1. Different SDLC Models? which one is best? what is STLC
Different SDLC models include Waterfall, Agile, Scrum, and DevOps. The best model depends on the project requirements. STLC is Software Testing Life Cycle.
Waterfall model follows a linear sequential flow, while Agile focuses on iterative development.
Scrum is a subset of Agile that uses fixed-length iterations called sprints.
DevOps combines development and operations to improve collaboration and productivity.
The best SDLC model depends on project requirements, team expertise, ...read more
Q2. Difference between sanity, smoke, retesting & Regression
Sanity, smoke, retesting, and regression are types of testing performed during software development.
Sanity testing: Quick test to check if the software is stable enough for further testing.
Smoke testing: Initial testing to ensure the basic functionalities of the software are working.
Retesting: Testing done to verify that a specific bug or issue has been fixed.
Regression testing: Testing done to ensure that new code changes have not adversely affected existing functionalities....read more
Q3. Difference between truncate and delete, Agile concept,
Truncate removes all data from a table while delete removes specific rows. Agile is a project management methodology.
Truncate is faster than delete as it doesn't log individual row deletions
Truncate resets the identity of the table while delete doesn't
Agile emphasizes on iterative development, continuous feedback, and collaboration
Agile frameworks include Scrum, Kanban, and Extreme Programming
Q4. What is Non Functionaltesting
Non-functional testing focuses on the performance, usability, reliability, and other aspects of a system beyond its basic functionality.
Non-functional testing evaluates the system's performance under load, its security, scalability, and other aspects.
Examples include stress testing, load testing, security testing, usability testing, and compatibility testing.
Non-functional testing helps ensure that the system meets the required quality standards and performs well in real-worl...read more
Q5. How to improve api performace
Improving API performance involves optimizing code, reducing network latency, caching data, and scaling infrastructure.
Optimize code by reducing unnecessary database queries and improving algorithm efficiency
Reduce network latency by using CDN, optimizing server response time, and minimizing data transfer
Implement caching mechanisms to store frequently accessed data and reduce database load
Scale infrastructure by using load balancers, auto-scaling, and optimizing server confi...read more
Q6. Jpa implementation in spring boot
JPA is a Java specification for mapping Java objects to relational databases. Spring Boot provides easy integration with JPA for data persistence.
Spring Boot provides built-in support for JPA through Spring Data JPA
Entities in JPA are annotated with @Entity to map to database tables
Repositories in Spring Data JPA are interfaces that extend JpaRepository for CRUD operations
Configuration for JPA can be done in application.properties or application.yml file
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Q7. Binary tree implementation
Binary tree implementation involves nodes with at most two children, left and right.
Nodes have a parent-child relationship
Traversal methods include in-order, pre-order, and post-order
Balanced vs unbalanced trees affect performance
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