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Airtel X- Labs Software Development Engineer Interview Questions and Answers

Updated 31 Jul 2021

Airtel X- Labs Software Development Engineer Interview Experiences

1 interview found

I applied via LinkedIn and was interviewed in Jul 2021. There was 1 interview round.

Interview Questionnaire 

3 Questions

  • Q1. Design url shortner.
  • Ans. 

    Design a URL shortener

    • Generate a unique short code for each URL

    • Store the mapping of short code to original URL in a database

    • Redirect users to the original URL when they access the short code

  • Answered by AI
  • Q2. Given an array and a sum you need to find a pair of elements whose sum is equal to the given sum?
  • Q3. LRU cache implementation with code.
  • Ans. 

    LRU cache implementation using doubly linked list and hash map.

    • Use a doubly linked list to keep track of the order of elements in the cache.

    • Use a hash map to store the key-value pairs for fast access.

    • When a new element is added, check if the cache is full and remove the least recently used element.

    • When an element is accessed, move it to the front of the linked list.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - The first round of interview was taken by Lead. He was extremely rude and wanted to humiliate you by confusing you at every solution you give. Though at last I gave the correct solution so he passed me to the next round.
Next round was taken by Senior Team Lead. It seemed as if did not even care about the interview. Gave me the question and did not even bother to check the solution. While I was discussing design for url shortner, he did not utter a word during the whole discussion.
I felt positive as he did not counter question my solution but HR said I was rejected.

Skills evaluated in this interview

Interview questions from similar companies

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

(2 Questions)

  • Q1. Jump game from leetcode
  • Q2. Rotation of matrix by 45 degress
  • Ans. 

    To rotate a matrix by 45 degrees, transpose the matrix and then reverse the rows.

    • Transpose the matrix

    • Reverse the rows of the transposed matrix

  • Answered by AI
Round 2 - HR 

(2 Questions)

  • Q1. What is encapsulation in oops?
  • Ans. 

    Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.

    • Encapsulation helps in hiding the internal state of an object and restricting access to it.

    • It allows for data hiding, which prevents direct access to an object's attributes.

    • Encapsulation also enables the concept of data abstraction, where only relevant details are exposed to the outside world.

    • By using access modifiers ...

  • Answered by AI
  • Q2. How do you configure MySQL database ?
  • Ans. 

    MySQL database can be configured using configuration files like my.cnf, command line options, and environment variables.

    • Use my.cnf file to configure settings like port number, data directory, and buffer sizes

    • Command line options can be used to override settings from my.cnf file

    • Environment variables like MYSQL_ROOT_PASSWORD can be used to set passwords during installation

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Practice with LeetCode and ensure that everything is reflected on your resume.
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-

I applied via Campus Placement

Round 1 - Coding Test 

3 coding questions, medium

Round 2 - Technical 

(2 Questions)

  • Q1. Related to string and prefix sum
  • Q2. How priority queue works and its implementation using min heap
  • Ans. 

    Priority queue is a data structure that stores elements based on their priority, allowing for efficient retrieval of the highest priority element.

    • Priority queue can be implemented using a min heap, where the root node always contains the minimum element.

    • Insertion: Add the new element to the end of the heap and then heapify up to maintain the min heap property.

    • Deletion: Remove the root node (minimum element), move the l...

  • Answered by AI

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
-
Result
Not Selected

I applied via Campus Placement and was interviewed in Mar 2024. There was 1 interview round.

Round 1 - Coding Test 

Design cab booking system on hacker rank platform

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Technical 

(1 Question)

  • Q1. Graph related question
Round 3 - Coding Test 

Write some simple program in any language

Round 4 - Case Study 

DB design for realtime push notification

Round 5 - One-on-one 

(1 Question)

  • Q1. Engineering manager round with some basic problem statement.
Round 1 - Technical 

(1 Question)

  • Q1. Java technical questions
Round 2 - Technical 

(1 Question)

  • Q1. Project related questions
Round 3 - HR 

(1 Question)

  • Q1. Strengths, Weakness, formalities, describe yourself.

Interview Preparation Tips

Interview preparation tips for other job seekers - Be good with technical concepts & keep it simple in HR round.

I applied via Recruitment Consultant and was interviewed in May 2021. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. What is agile process
  • Ans. 

    Agile process is an iterative approach to software development that emphasizes flexibility and customer satisfaction.

    • Agile process involves breaking down the development process into small, manageable chunks called sprints.

    • It emphasizes collaboration between team members and with the customer to ensure that the end product meets their needs.

    • Agile process values working software over comprehensive documentation.

    • It allow...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Waste of time.
I had given two rounds interviews in citius tech . First round was technical, second round was manager round. He asked me simple question about current projects,details about previous organizations and normal technical questions and I answered them correctly,But still got rejected I dont know why. Same thing happened with my friend still he doesnt know the reason why he is not selected. They just take the interviews and dont select anyone.
Such a waste of time,I will not apply to this company again.

Skills evaluated in this interview

I was interviewed in Jan 2021.

Interview Questionnaire 

1 Question

  • Q1. Questions on specifically on data structures and algorithms and on system design too

Interview Preparation Tips

Interview preparation tips for other job seekers - Include at least one link from any programming platform preferably, Hackerrank. Focus more on problem solving rather than giving contests. At least that worked for me.

I applied via Recruitment Consultant and was interviewed in Oct 2020. There were 4 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Datastructure and algorithms,Linkedlist,arrays,dynamic programming,recursion,design patterns,Trees

Interview Preparation Tips

Interview preparation tips for other job seekers - There will be four technical interviews
1.hackerearth round
2.problem solving round-1
3.problem solving round-2
4.Design round- where you will be asked to design an application with given requirements

I was interviewed in Aug 2016.

Interview Preparation Tips

Round: Resume Shortlist
Experience: Around 180-200 students applied for the position. 45 students were selected for the coding test.

Round: Test
Experience: There were 3 questions. The difficulty level was moderate. I did 2 questions and got selected for the next round. 13 students were selected for the skype interview.
Duration: 1 hour 30 minutes
Total Questions: 3

Round: Technical Interview
Experience: This skype round basically checks our strength in the computer science basics. There were questions on data structures, databases, algorithms. They were moderate to difficult in nature. 7 people went into the next skype round which is also technical in nature.

Round: Technical Interview
Experience: In this round, first, there was a coding question which I needed to write and execute in a shared environment. Then, there was basically a detailed testing of the concepts I had used in projects. As the majority of my projects were on Android, I was interviewed in Android from here on. There were some questions on software design principles as well. 2 students were selected from this round for the final round.

Round: Technical + HR Interview
Experience: In this final round, there was a brief discussion about my projects and some questions in between about my projects. After this discussion, I was told to showcase my skills other than technical. I was made to pitch my startup idea with the interviewer being my probable customer. So, one can expect his management or leadership skills also to be tested in this round. Both the candidates were selected.

College Name: The LNM Institute Of Information Technology, Jaipur

Airtel X- Labs Interview FAQs

What are the top questions asked in Airtel X- Labs Software Development Engineer interview?

Some of the top questions asked at the Airtel X- Labs Software Development Engineer interview -

  1. LRU cache implementation with co...read more
  2. Design url shortn...read more
  3. Given an array and a sum you need to find a pair of elements whose sum is equal...read more

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