DriverUp Junior Full Stack Developer Interview Questions and Answers

Q1. Demonstrate Function Overriding.
Ans. 
Function Overriding is a concept in object-oriented programming where a subclass provides a specific implementation of a method that is already provided by its parent class.
• In Function Overriding, a subclass can provide a specific implementation of a method that is already defined in its parent class.

• The method in the subclass must have the same name, return type, and parameters as the method in the parent class to ove...read more
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Q2. Linq query with order by
Ans. 
Using LINQ query to order data in C#
• Use the OrderBy method to sort data in ascending order

• Use the OrderByDescending method to sort data in descending order

• You can also use ThenBy and ThenByDescending for secondary sorting
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Q3. What is Out Parameter with example
Ans. 
Out parameter is used to pass data out of a method or function.
• Out parameters are used when a method needs to return multiple values.

• They are declared using the 'out' keyword in C#.

• Example: void CalculateArea(int length, int width, out int area) { area = length * width; }
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Q4. Authentication and autherization, JWT Tocken
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Q5. Reflection in C#
Ans. 
Reflection in C# allows for inspecting and manipulating metadata of types at runtime.
• Reflection is used to dynamically create instances of types, access properties, and invoke methods.

• Examples include using reflection to load assemblies at runtime, inspect attributes of types, and generate code dynamically.

• Reflection can be slow and should be used judiciously due to performance overhead.
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PROJECTS

Multi-Source Medical Data Integration & Management for Healthcare Services

01/2023-06/2023

Guntur, Andhra Pradesh, India

A project focused on integrating medical data for healthcare services.

Developed a web application to integrate medical data from multiple sources, enabling efficient data management in healthcare services.

Designed and implemented RESTful APIs for data interaction and integration,

Utlized Django for backend development, ensuring scalability and maintainability

Implemented data validation and security protocols to ensure the protection of patient information.

Streamlined medical records and information fhow to enhance healthcare service efficiency

Q1. Sir/madam What's the My responsibility in our country
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Q1. Sir/madam could be pleace how mach time this round
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General aptitude, computer science fundamentals multiple-choice questions, and data structures and algorithms multiple-choice questions were asked.

Q1. Given a string, write a function to reverse the string.
Ans. 
Function to reverse a given string
• Create an empty string to store the reversed string

• Iterate through the input string in reverse order and append each character to the new string

• Return the reversed string
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Q2. Given a sorted array of integers, write a function to perform a binary search to find the index of a target value. If the target value is not found, return -1.
Ans. 
Binary search function to find target value in sorted array
• Define function that takes sorted array and target value as input

• Initialize variables for start, end, and middle indices

• Use while loop to iterate until start is less than or equal to end
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Q1. About the company
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Q2. What are three significant achievements in your life?
Ans. 
Graduating with honors, winning a hackathon, volunteering in a developing country
• Graduated with honors from university with a degree in Computer Science

• Won first place in a hackathon competition by developing a unique and innovative software solution

• Volunteered in a developing country to help build schools and provide education to underprivileged children
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Q1. Javascript questions were mainly there like closures , currying Objects and promises , then they started with React
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Q2. In react they asked about hooks, difference between props and state, version , useMemo , axios working , microservices
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Q1. Why do u want to join us , u already holding an offer
Ans. 
I am drawn to your company's innovative projects and collaborative work environment.
• I am impressed by the cutting-edge technologies and projects your company is working on.

• I value the opportunity to work in a collaborative and supportive team environment.

• I believe that joining your company will provide me with the chance to further develop my skills and contribute meaningfully to impactful projects.
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Q2. How do u prioritize your task
Ans. 
I prioritize tasks based on deadlines, importance, and dependencies.
• I create a list of all tasks and categorize them based on deadlines.

• I identify tasks that are critical to the project's success and prioritize them accordingly.

• I consider dependencies between tasks and prioritize those that are dependent on others being completed first.

• I regularly reassess priorities and adjust as needed based on changing circumstances...read more
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Q1. Find the second largest element from array
Ans. 
Find the second largest element from array of strings
• Sort the array in descending order

• Access the element at index 1 to get the second largest element
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Q2. Java basics and advanced programming
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Q3. Failsafe vs fail fast integrators
Ans. 
Failsafe integrators prioritize system stability by handling errors gracefully, while fail fast integrators prioritize quick detection and resolution of errors.
• Failsafe integrators focus on ensuring the system continues to function even in the presence of errors.

• Fail fast integrators aim to quickly identify and address errors to prevent further issues.

• Failsafe integrators often use techniques like retries, circuit brea...read more
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Q1. Saga design patterns
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Q2. Micro services architecture
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Q1. Arrays reverse in js
Ans. 
Use the built-in reverse() method to reverse an array in JavaScript.
• Use the reverse() method on the array to reverse its elements in place.

• Example: let arr = ['apple', 'banana', 'cherry']; arr.reverse(); // ['cherry', 'banana', 'apple']
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Q2. String question various conditions
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Q1. Too much focus on theory questions. Like how would you link multiple middleware - write code for that
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Good morning sir have a you sir my name is hemant Ramchandra narkhede

Java script simple frame

Q1. What are the different data types present in javascript?
Ans. 
JavaScript has several data types including string, number, boolean, object, function, undefined, and null.
• String: 'hello', '123'

• Number: 123, 3.14

• Boolean: true, false

• Object: { key: 'value' }

• Function: function() { }

• Undefined: undefined

• Null: null
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Q2. Difference between var and let keyword in javascript.
Ans. 
var is function-scoped while let is block-scoped in JavaScript.
• var keyword is function-scoped, meaning it is accessible throughout the function it is declared in.

• let keyword is block-scoped, meaning it is only accessible within the block it is declared in.

• Using var can lead to variable hoisting issues, while let provides more predictable behavior.

• let allows for better variable scoping and reduces the risk of unintended
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Q1. What are the advantages of pair programming?
Ans. 
Pair programming promotes collaboration, knowledge sharing, and code quality.
• Enhances code quality through immediate code review and feedback

• Promotes knowledge sharing and learning from each other

• Fosters collaboration and teamwork

• Reduces the likelihood of bugs and errors

• Increases productivity by leveraging two minds on the same problem

• Helps in breaking down complex problems into smaller tasks

• Improves communication skil
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Q2. How do you handle constructive feedback about your full-stack development projects?
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Q1. How do you identify bugs in your code?
Ans. 
I use a combination of manual testing, unit testing, and debugging tools to identify bugs in my code.
• Perform manual testing by running the code and checking for any unexpected behavior or errors.

• Write unit tests to verify the functionality of individual components and catch any issues early on.

• Utilize debugging tools like breakpoints, logging, and stack traces to track down the root cause of bugs.

• Collaborate with team ...read more
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Q2. How long have you been coding primarily in Python?
Ans. 
I have been coding primarily in Python for 5 years.
• I started learning Python in college and have been using it extensively in my professional career.

• I have worked on various projects using Python, including web development, data analysis, and automation.

• I am proficient in Python libraries such as NumPy, Pandas, and Django.
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HR round full stack developer experience

Best atitude round questions