Techplus Media Software Development Engineer Interview Questions and Answers

Q1. What is invoke controller?
Ans. 
Invoke controller is a component in a software application that manages the flow of requests and responses between the user interface and the backend services.
• Manages the communication between user interface and backend services

• Handles the routing of requests to appropriate functions or methods

• Coordinates the flow of data and actions within the application
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Q2. What is facade in laravel?
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Facade in Laravel is a design pattern that provides a simple interface to a complex subsystem.
• Facade provides a static interface to classes that are available in the application's service container.

• It is used to simplify the usage of complex classes by providing a simpler interface.

• Facade allows you to access Laravel's features without needing to instantiate objects or use dependency injection.

• Example: The Auth facade ...read more
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Q1. 2 sum problem [leetcode]
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Q2. Linkedlist problem
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Implement various operations on a linked list and solve related problems like reversing a linked list or detecting a cycle.
• Understand the basic structure of a linked list with nodes containing data and a reference to the next node.

• For insertion, update the pointers of the nodes accordingly to maintain the sequence.

• For deletion, adjust the pointers to skip the node to be deleted.

• To reverse a linked list, iterate through...read more
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Q1. Explain in detail about your last project
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Q2. What is Regression Testing and Retesting
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Regression testing is testing the existing functionality of the software after making changes to ensure that the changes have not affected the existing functionality. Retesting is testing the same functionality again after fixing the defects found during regression testing.
• Regression testing is done to ensure that the changes made to the software have not affected the existing functionality.

• Retesting is done to ensure ...read more
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Q3. What 300 & 301 status codes represents?
Ans. 
300 represents multiple choices and 301 represents moved permanently.
• 300 status code represents multiple choices, indicating that the requested resource has multiple representations available.

• 301 status code represents moved permanently, indicating that the requested resource has been permanently moved to a new URL.

• Both status codes are used in HTTP responses to indicate the status of a requested resource.

• Examples of 3...read more
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Q4. What is Sanity Testing and Smoke Testing?
Ans. 
Sanity testing and Smoke testing are types of software testing performed to check the basic functionality of the application.
• Smoke testing is a type of testing that checks whether the critical functionalities of the application are working fine or not.

• Sanity testing is a type of testing that checks whether the bugs reported earlier have been fixed or not.

• Smoke testing is performed after the build is received from the d...read more
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Q5. What is Severity and Priority?
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Severity is the impact of a defect on the system, while Priority is the order in which defects should be fixed.
• Severity is based on the extent of damage caused by a defect

• Priority is based on the importance of the affected functionality

• High Severity and High Priority defects should be fixed first

• Example: A spelling mistake in a button label has low Severity but high Priority if it affects usability
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Q6. Explain High priority and low severity with an example
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High priority means the issue needs to be fixed immediately, while low severity means the issue has minimal impact on the system.
• High priority issues are critical and can cause system failure or data loss

• Low severity issues are minor and do not affect the system's functionality

• Example of high priority and low severity issue: A critical security vulnerability is high priority but low severity because it has not yet been...read more
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Q7. Explain low priority and high severity with an example
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Low priority and high severity refer to the impact and urgency of a bug respectively.
• Low priority bugs are those that do not have a significant impact on the system or user experience, but still need to be fixed eventually.

• High severity bugs are those that have a significant impact on the system or user experience and need to be fixed urgently.

• For example, a low priority bug could be a typo in a non-critical error mess...read more
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Q8. What is Agile methodology
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Agile methodology is an iterative approach to software development that emphasizes flexibility and customer satisfaction.
• Agile values individuals and interactions over processes and tools

• It emphasizes working software over comprehensive documentation

• It encourages collaboration between developers and customers

• It involves breaking down projects into smaller, manageable chunks called sprints

• Examples of Agile methodologies...read more
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Q9. Which test should do first and why?
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The test that should be done first is the one that covers the most critical and high-risk functionality.
• Identify critical and high-risk functionality

• Prioritize tests based on risk

• Perform tests in a logical order

• Re-evaluate test priorities as development progresses
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Q10. Logical question - You have 3 switches and one bulb in another room, you have to find which switch in connected to that bulb, you are given only ONE CHANCE.
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Q1. What is your long term goal
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In aptitude test,there is multiple questions are there in subject wise and reasoning,and subtopics like ages,clocks, distance like these types questions are there and java problem questions also there

Q1. In technical round mainly asked about your project and so many questions are asked in Java,sql and javascript
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Q2. Oops in Java Patterns in Java JDK,JRE,JVM MVC Array questions strings in Java This,super keywords Java problems like palindrome, prime number,and so many problems and logics Why java is platform independen...read more
Ans. 
Questions asked in a Full Stack Software Developer interview
• Questions on OOPs concepts, design patterns, and MVC architecture

• Array and string manipulation in Java

• Understanding of JDK, JRE, and JVM

• Usage of 'this' and 'super' keywords

• Solving Java problems like palindrome, prime number, etc.

• Explanation of Java's platform independence

• SQL queries and commands
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Q3. MVC in Java Design patterns in Java
Ans. 
MVC is a design pattern used in Java for separating concerns. Java has many design patterns like Singleton, Factory, etc.
• MVC separates Model, View, and Controller for better organization and maintenance

• Singleton ensures only one instance of a class is created

• Factory pattern creates objects without exposing the instantiation logic to the client

• Observer pattern allows objects to be notified of changes in other objects

• Dec...read more
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Q4. Explain Jdbc connectivity Spring boot
Ans. 
JDBC is a Java API for connecting to databases. Spring Boot provides auto-configuration for JDBC.
• JDBC stands for Java Database Connectivity.

• It is a Java API for connecting to databases.

• Spring Boot provides auto-configuration for JDBC, making it easy to set up database connections.

• JDBC can be used to execute SQL statements and retrieve results.

• Example: DriverManager.getConnection(url, username, password);
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Q1. Hr asked only for your background and life styles and some basic questions about company
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Q1. How do you approach debugging a complex issue in a large codebase with minimal documentation?
Ans. 
Approach debugging by understanding the code flow, using debugging tools, isolating the issue, and testing solutions.
• Start by understanding the code flow and identifying potential areas where the issue may be occurring.

• Use debugging tools like breakpoints, logging, and stack traces to pinpoint the source of the problem.

• Isolate the issue by reproducing it consistently and narrowing down the scope of the problem.

• Test pot...read more
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Q2. Describe a situation where you had to refactor existing code to improve performance or maintainability. What challenges did you face, and how did you overcome them?
Ans. 
Refactored a legacy codebase to improve performance by optimizing database queries.
• Identified bottlenecks in the codebase by profiling and analyzing performance metrics.

• Rewrote complex and inefficient database queries to improve response times.

• Implemented caching mechanisms to reduce redundant database calls.

• Refactored code to follow best practices and improve maintainability.

• Tested the changes thoroughly to ensure the
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Q3. How do you ensure your code is both efficient and scalable when working under tight deadlines? Can you provide an example?
Ans. 
By prioritizing tasks, using efficient algorithms, and conducting code reviews.
• Prioritize tasks based on impact and complexity to focus on critical components first.

• Utilize efficient algorithms and data structures to optimize code performance.

• Conduct code reviews with team members to identify potential bottlenecks and suggest improvements.

• Example: Prioritize implementing a caching mechanism for frequently accessed data
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Q4. Explain how you would handle a situation where your preferred solution to a problem conflicts with the opinion of a senior team member or client.
Ans. 
I would approach the situation by respectfully discussing the pros and cons of both solutions and finding a compromise.
• Listen to the senior team member or client's perspective and understand their reasoning

• Present your preferred solution along with the reasons why you believe it is the best approach

• Engage in a constructive discussion to find common ground or a compromise

• Consider the impact of each solution on the proje...read more
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Q5. What is your process for staying updated with the latest programming languages, frameworks, and technologies relevant to your role?
Ans. 
I regularly attend tech conferences, read industry blogs, participate in online courses, and collaborate with colleagues to stay updated.
• Attend tech conferences to learn about new technologies and trends

• Read industry blogs and articles to stay informed

• Participate in online courses and tutorials to expand knowledge

• Collaborate with colleagues to share insights and learn from each other
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Q6. How do you manage dependencies and third-party libraries in your projects to avoid potential security or compatibility issues?
Ans. 
I use package managers, regularly update dependencies, and conduct security audits.
• Utilize package managers like npm, pip, or Maven to manage dependencies

• Regularly update dependencies to ensure compatibility and security patches

• Conduct security audits using tools like OWASP Dependency-Check or Snyk

• Consider using dependency locking to ensure consistent builds
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Q7. Describe a time when you had to implement a feature that required learning a new technology or framework on the job. How did you approach the learning curve?
Ans. 
I implemented a new feature using React Native and had to learn the framework on the job.
• Researched online resources and documentation to understand React Native

• Experimented with small projects to practice using React Native

• Sought help from colleagues or online communities when facing challenges
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Q8. Can you walk us through a time when you identified a potential bottleneck in a system before it became a problem? How did you address it?
Ans. 
Identified and addressed a potential bottleneck in a system before it became a problem.
• Monitored system performance regularly to identify any potential bottlenecks

• Analyzed system logs and metrics to pinpoint the root cause of the bottleneck

• Implemented optimizations such as caching, indexing, or code refactoring to address the bottleneck

• Collaborated with team members to implement a long-term solution to prevent similar
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Q9. How do you prioritize and manage multiple tasks or projects when they all seem equally important?
Ans. 
I prioritize tasks based on deadlines, impact, and dependencies, and use tools like to-do lists and project management software.
• Evaluate deadlines and prioritize tasks that are due soon

• Consider the impact of each task on the overall project or team goals

• Identify dependencies between tasks and prioritize accordingly

• Use tools like to-do lists, project management software, or time-blocking techniques to stay organized

• Regu
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Q10. What strategies do you use to ensure that your code is both clean and well-documented for future developers who may work on it?
Ans. 
I use consistent naming conventions, inline comments, and thorough documentation to ensure clean and well-documented code.
• Follow consistent naming conventions for variables, functions, and classes to make the code easier to understand.

• Include inline comments to explain complex logic or algorithms within the code.

• Write thorough documentation for each function, class, and module to provide context and usage instructions ...read more
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Q11. How would you approach integrating a new feature into an existing system without disrupting the current functionality? Can you provide an example from your past experience?
Ans. 
Approach integrating new feature into existing system without disruption
• Analyze the existing system to understand its architecture and dependencies

• Identify the impact of the new feature on the current functionality

• Implement the new feature in a separate branch or environment for testing

• Conduct thorough testing to ensure the new feature works as expected and does not break existing functionality

• Gradually integrate the n...read more
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Q1. Self intro - tell me about yourself
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I am a software developer with a passion for creating efficient and user-friendly applications.
• Proficient in multiple programming languages such as Java, C++, and Python

• Experience in developing web applications using HTML, CSS, and JavaScript

• Strong problem-solving and analytical skills

• Familiarity with agile development methodologies

• Excellent communication and teamwork abilities
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Q2. Experience & why do you want to switch
Ans. 
I have 5 years of experience as a Software Developer and I want to switch to explore new technologies and challenges.
• I have 5 years of experience as a Software Developer.

• I have gained expertise in various programming languages and frameworks.

• I have successfully delivered multiple projects and contributed to their success.

• I want to switch to explore new technologies and challenges.

• I believe switching will help me enhanc
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Simple basic code for Form data

Q1. Explain about your technical skills
Ans. My technical skills are c language and java
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Q2. What is technical skills
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Technical skills are abilities and knowledge required to perform specific tasks related to technology and software development.
• Technical skills include programming languages, software development methodologies, database management, and system administration.

• Examples of technical skills are proficiency in Java, knowledge of Agile methodology, experience with SQL databases, and expertise in Linux administration.

• Technical...read more
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Q3. How to use technical skills
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Technical skills can be used to solve complex problems and create innovative solutions.
• Identify the problem or challenge

• Determine the appropriate technology or programming language to use

• Develop a plan or strategy for implementation

• Collaborate with team members and stakeholders

• Test and refine the solution

• Continuously learn and improve technical skills
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