Ixia Solutions Senior Software Developer Interview Questions and Answers

Basic 2 ,3 Java programs. Moderate level.

Q1. Core Java theory questions. Questions focused on multithreading. Basic spring boot questions.
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Q2. How to handle authentication in Spring Boot
Ans. 
Authentication in Spring Boot is handled using Spring Security which provides various authentication mechanisms.
• Use Spring Security to configure authentication in Spring Boot

• Define a custom UserDetailsService to load user-specific data for authentication

• Use annotations like @EnableWebSecurity and @EnableGlobalMethodSecurity to secure endpoints

• Configure authentication providers like in-memory, JDBC, LDAP, etc. in the ap
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Q3. Transient keyword
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Q1. Core Java programs. Core Java theory questions
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Q2. How many ways in Java we can handle deadlock or ways to handle synchronisation in Java.
Ans. 
In Java, deadlock can be handled by using techniques like avoiding nested locks, using timeout, and using the java.util.concurrent package.
• Avoid nested locks to prevent potential deadlocks.

• Use timeout when acquiring locks to prevent indefinite waiting.

• Utilize java.util.concurrent package classes like ReentrantLock and Semaphore for more advanced synchronization control.
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Q1. Basic salary related questions
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Q1. Basic SQL questions related to COUNT function, other aggregate functions, SSRS questions
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Q1. What basic JavaScript and React concepts were you asked about during the interview?
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Q2. Closures, useMemo, useCalbback and a practical task is given that should completed within 20 minutes
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Q1. Find in rotated sorted array
Ans. 
Search for a target value in a rotated sorted array.
• Use binary search to find the pivot point where the array is rotated.

• Determine which half of the array the target value lies in based on the pivot point.

• Continue binary search in the appropriate half of the array to find the target value.
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Q2. Design IMDB. how will you manage concurrent ratings
Ans. 
Design IMDB with concurrent ratings management
• Implement a locking mechanism to ensure only one user can update a rating at a time

• Use a queue system to handle multiple rating requests in an orderly manner

• Consider using distributed systems to handle high concurrency levels
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Q1. Design vehicle rental system. Api design
Ans. 
Design a vehicle rental system API
• Create endpoints for listing available vehicles, booking a vehicle, and returning a vehicle

• Include authentication and authorization mechanisms for users and admins

• Implement payment gateway integration for processing rental payments

• Include features like vehicle search, filtering, and reviews/ratings

• Consider scalability and performance optimizations for handling high traffic
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Q1. Lazy loading in react
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Q2. Cache bursting
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Q3. Difference between == and ===
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Q1. Promises in javascript
Ans. 
Promises in JavaScript are objects representing the eventual completion or failure of an asynchronous operation.
• Promises are used to handle asynchronous operations in JavaScript.

• They can be in one of three states: pending, fulfilled, or rejected.

• Promises can be chained using .then() to handle success and .catch() to handle errors.
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20 questions aptitude

Q1. DSA question to sort the array
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Q2. Coding question to print all the prime numbers form 0 to n
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3 aptitude questions given one after another. For each question 20 -25 minutes. Questions were based on logic you need to explain the logic behind them . Example. Draw table based on given data, find the bus stops total stops from given set of data

Coding test was online . 3 coding question with around 1 30 hour. Questions were from string array . Matrix . And array .

Q1. Hr round was just casual talk. Questions like about college , course family studies were asked
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Q2. Tell about your About family
Ans. 
I come from a close-knit family that values love, support, and togetherness.
• My parents have been married for over 30 years.

• I have one older sister who is a doctor.

• We often have family gatherings and celebrate special occasions together.

• My family has always encouraged and supported my career choices.
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Q3. Reason behind choosing your college
Ans. 
I chose my college because of its strong reputation in computer science and its location in a tech hub.
• Strong reputation in computer science

• Location in a tech hub

• Opportunities for internships and networking

• Diverse and inclusive campus community
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Q4. What advice u will give to juniors while selecting college
Ans. 
Choose a college that offers a strong computer science program and opportunities for practical experience.
• Look for colleges with reputable computer science departments.

• Consider the curriculum and courses offered in the computer science program.

• Research the faculty and their expertise in the field.

• Look for colleges that offer internships or co-op programs for practical experience.

• Consider the location and proximity to t...read more
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Q5. Question about year gap if any
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