TELUS Digital Software Development Engineer 3 Interview Questions and Answers

Q1. What are custom hooks in React, and what are their use cases? Additionally, can you provide an example of a custom hook that performs an API call and utilizes the retrieved data?
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Q2. What is the difference between useMemo and useCallback in React?
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Q3. What is the difference between class-based components and functional components in React?
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Q4. How can you implement the lifecycle of a React component in a functional component?
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Q5. What are the various state management techniques available in React?
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Q6. What is the architecture of Redux, and what purposes do middlewares serve within it?
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Q7. What is hoisting in JavaScript?
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Q8. What is event bubbling in JavaScript?
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Q9. What are block scope and function scope in JavaScript?
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Q10. Have you had experience working with semantic tags in HTML?
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Q11. What are the various methods for creating an object in JavaScript?
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Q12. What are the differences between shallow copy and deep copy in JavaScript?
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Q13. What will be the output of the following JavaScript code fragment: `const a; function test() { console.log(a); }; test();`?
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Q14. How can you use CSS to arrange elements in a row and column layout?
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Q15. Have you utilized CSS preprocessors, and if so, which ones?
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Q16. If I have assigned different colors to an ID and a class and applied both to the same element, which color will be applied based on CSS specificity precedence?
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An aptitude test is an assessment to measure a candidate mental aptitude/mental ability

Q1. Can you briefly Tell us about yourself?
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Q2. What do you consider to be your strongest points?
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Q3. Which programming languages do you use regularly in your work
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A group discussion is a structured conversation in which participants share their ideas, perspectives, and solutions on a specific topic.

Q1. What motivates you to seek employment at Wipro?
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Q2. What are your long-term career goals?
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Assignment details refer to the specifics of an assignment, including any documents and/or emails or subsequent correspondence between the company and the client.

It was an aptitude test that included coding and various logical questions.

Q1. Domain questions
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Q2. Project level questions
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Q3. Mid level python questions
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Q4. Devops questions
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Q1. Scenario based question
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Q2. DevSecOps Questions
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Q1. Managerial Round. It was a casual discussion though about the project and role level activities.
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Q1. Its was just a formality
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It was a simple Aptitude test designed to test your english proficiency and your quantitative skills.

Q1. Multiple questions meant to test your english communication proficiency
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There were 2 coding questions. The level of questions were not very high. The languages available for the round were Python, Java, C++, C, C#.

Q1. Please Introduce yourself
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Q2. What project did you work on in your final year?
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Q3. Do you have any connections in the industry?
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Q4. Did you undergo any Internships?
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Q1. Difference between out and ref.
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Q2. Sql query to find the 2nd last student marks
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Q3. Second round was around project specific like why mongodb or posgreSQL? Project architecture and followup questions.
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Q4. Create global exception handler.
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Q1. List down Java 8 features and use case
Ans. 
Java 8 introduced several new features including lambda expressions, streams, and functional interfaces.
• Lambda expressions: Allow for more concise and readable code by enabling functional programming.

• Streams: Provide a way to work with collections of objects in a more functional style.

• Functional interfaces: Interfaces with a single abstract method, used to enable lambda expressions.

• Optional class: Helps to avoid null p...read more
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Q2. List down Spring boot annotation used
Ans. 
Spring boot annotations are used to simplify the development process by providing metadata to the Spring framework.
• 1. @SpringBootApplication - Main annotation to indicate the main class of a Spring Boot application.

• 2. @RestController - Annotation for RESTful web services.

• 3. @Autowired - Dependency injection annotation.

• 4. @GetMapping, @PostMapping, @PutMapping, @DeleteMapping - Annotations for mapping HTTP requests to c...read more
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Q3. Difference between String builder and String Buffer
Ans. 
String Builder is not synchronized and faster, while String Buffer is synchronized and slower.
• String Builder is not thread-safe, while String Buffer is thread-safe.

• String Builder is faster due to lack of synchronization, while String Buffer is slower due to synchronization.

• String Builder is recommended for single-threaded operations, while String Buffer is recommended for multi-threaded operations.
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Q4. What is String pool
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String pool is a storage area in memory where strings are stored to optimize memory usage by reusing common strings.
• String pool helps in reducing memory usage by storing only one copy of each unique string.

• Strings created using double quotes are stored in the string pool.

• Strings created using new keyword are not stored in the string pool.
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Q5. Number of memory type have. like heap memory , stack
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There are two main types of memory in a computer system: stack memory and heap memory.
• Stack memory is used for static memory allocation and is managed by the compiler. It is typically faster but limited in size.

• Heap memory is used for dynamic memory allocation and is managed by the programmer. It is slower but has a larger size.

• Examples: C programming language uses stack memory for function calls and heap memory for dy
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Q1. Asked about technical expertise and topic related question
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Q2. Notice period and salary discussion
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Q1. Technical in depth
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Q2. Salary discussion
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Q1. Notice period and salary discussion
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Q1. Can you tell me about yourself?
Ans. 
I am a passionate software engineer with a strong background in computer science and experience in developing innovative solutions.
• Completed a Bachelor's degree in Computer Science from XYZ University

• Proficient in programming languages such as Java, Python, and C++

• Worked on projects involving web development, database management, and machine learning

• Strong problem-solving skills and ability to work in a team environmen
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Q2. What was your role and contributions in your projects?
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I was responsible for designing and implementing new features, fixing bugs, and optimizing performance in various projects.
• Designed and implemented new features based on client requirements

• Fixed bugs reported by QA team or end users

• Optimized performance by refactoring code or improving algorithms

• Collaborated with team members to ensure project deadlines were met
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Q3. Are you willing to relocate?
Ans. 
Yes, I am open to relocating for the right opportunity.
• I am open to relocating for the right job opportunity

• I am flexible and willing to move for the right position

• I have relocated for previous jobs and am comfortable with the process
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