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Twenty19 Interview Questions and Answers
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Interview questions from similar companies
Shubham Chandra
I was interviewed before Sep 2016.
Interview Questionnaire
16 Questions
- Q1. On what technology you have worked?
- Ans.
I have worked on various technologies including Java, Python, AWS, Docker, and Kubernetes.
Java
Python
AWS
Docker
Kubernetes
- Q2. Case studies of daily operational activities?
- Ans.
Daily operational activities case studies
Case study of optimizing production line for efficiency
Case study of implementing new safety protocols in a manufacturing plant
Case study of troubleshooting and resolving technical issues in a software development team
Case study of streamlining inventory management in a retail store
Case study of improving customer service processes in a call center
- Q3. What is project management?
- Ans.
Project management is the process of planning, organizing, and overseeing the execution of a project from start to finish.
It involves defining project goals and objectives
Creating a project plan and timeline
Assigning tasks and responsibilities to team members
Monitoring progress and making adjustments as needed
Ensuring that the project is completed on time, within budget, and meets the desired quality standards
Examples ...
- Q4. What is financial and cost control during project management?
- Ans.
Financial and cost control is the process of monitoring and managing project expenses to ensure they stay within budget.
Developing a detailed budget plan
Tracking expenses and comparing them to the budget plan
Identifying and addressing cost overruns
Negotiating with vendors to get the best prices
Implementing cost-saving measures
Regularly reporting on financial status to stakeholders
- Q5. What is resource management?
- Ans.
Resource management is the process of planning, allocating, and optimizing resources to achieve organizational goals.
It involves identifying the resources needed for a project or task
Allocating those resources in an efficient manner
Monitoring and controlling resource usage to ensure optimal performance
Examples include managing personnel, finances, equipment, and time
Effective resource management can lead to increased p
- Q6. What is 2G , 3G, 4G call flow?
- Ans.
2G, 3G, and 4G call flow are the processes involved in establishing and maintaining a mobile phone call.
2G call flow involves circuit-switched technology and uses Time Division Multiple Access (TDMA) for voice transmission.
3G call flow uses packet-switched technology and supports both voice and data transmission.
4G call flow uses Long-Term Evolution (LTE) technology and provides high-speed data transmission.
All call fl...
- Q7. What is single RAN?
- Ans.
Single RAN is a network architecture that allows multiple wireless technologies to be supported on a single physical network.
Single RAN stands for Single Radio Access Network.
It enables multiple wireless technologies such as 2G, 3G, 4G, and 5G to be supported on a single physical network.
This reduces the need for multiple hardware and software components, resulting in cost savings and simplified network management.
Sing...
- Q8. What is VOLTE?
- Ans.
VOLTE stands for Voice over LTE. It is a technology that allows voice calls to be made over a 4G LTE network.
VOLTE uses IP packets to transmit voice calls over the LTE network
It provides better call quality and faster call setup times compared to traditional 2G/3G networks
VOLTE also allows for simultaneous voice and data usage on the same network
Examples of VOLTE-enabled devices include iPhone 6 and above, Samsung Gala...
- Q9. Difference between LTE & VOLTE?
- Ans.
LTE is a standard for wireless broadband communication while VoLTE is a technology that enables voice calls over LTE network.
LTE stands for Long-Term Evolution and is a standard for wireless broadband communication.
VoLTE stands for Voice over LTE and is a technology that enables voice calls over LTE network.
LTE is used for data transfer while VoLTE is used for voice calls.
VoLTE provides better call quality and faster c...
- Q10. What is transport network?
- Ans.
Transport network refers to the infrastructure that enables the movement of people, goods, and information.
Transport network includes roads, railways, airports, seaports, and communication networks.
It plays a crucial role in the economy by facilitating trade and commerce.
Examples of transport networks include the interstate highway system in the US and the European railway network.
Transport network planning involves op...
- Q11. Difference between ABIS over IP and ABIS over TDM?
- Ans.
ABIS over IP and ABIS over TDM are two different methods of transmitting biometric data.
ABIS over IP uses internet protocol to transmit biometric data while ABIS over TDM uses time-division multiplexing.
ABIS over IP is more flexible and scalable than ABIS over TDM.
ABIS over TDM is more reliable and secure than ABIS over IP.
ABIS over IP is suitable for remote locations while ABIS over TDM is suitable for local networks.
...
- Q12. Basic architecture of 2G , 3G & 4G?
- Ans.
2G, 3G, and 4G are mobile network technologies with different architectures.
2G uses circuit-switched technology and is primarily used for voice calls and text messaging.
3G uses packet-switched technology and offers faster data transfer rates than 2G.
4G uses all-IP packet-switched technology and provides even faster data transfer rates than 3G.
4G also supports advanced features like VoLTE and carrier aggregation.
Each ge...
- Q13. Introduce yourself?
- Ans.
I am a Senior engineer with 10+ years of experience in software development, specializing in backend systems and cloud technologies.
10+ years of experience in software development
Specialize in backend systems and cloud technologies
Strong problem-solving skills
Experience with large-scale distributed systems
Proficient in programming languages such as Java, Python, and Go
- Q14. What are the experiences of your previous companies?
- Ans.
I have worked in various companies ranging from startups to large corporations, gaining experience in diverse technologies and industries.
Worked in a startup where I was responsible for developing a scalable backend system using Node.js and MongoDB.
At a mid-sized company, I led a team in implementing CI/CD pipelines for faster and more reliable software delivery.
In a large corporation, I worked on optimizing performanc...
- Q15. Why do you want to join this company?
- Ans.
I am impressed by the company's innovative projects and strong reputation in the industry.
Company's reputation for cutting-edge technology
Opportunity to work on challenging projects
Positive reviews from current employees
- Q16. What is your notice period? Is it negotiable or not?
- Ans.
My notice period is currently 3 months, but it may be negotiable depending on the circumstances.
My current notice period is 3 months
I am open to negotiation depending on the circumstances
I can provide examples of when I have negotiated notice periods in the past
Interview Preparation Tips
Experience: Submitted resume online through portal and received the call. Technical Telephonic interview was scheduled.
Tips: Resume should be as per the desired profile.
Round: Technical Interview
Experience: In this round interviewer asks basic technical questions based on the previous experiences that was mentioned in my resume.
Tips: Study all the points mentioned in the resume very deeply.
Round: Technical Interview
Tips: Given your answers to the point. It should be in brief .
Round: HR Interview
Tips: Conversation should be in proper communication. Try to convince the HR for joining. Negotiate the salary as per the profile offered to you.
Skills: Technical Skill, Communication And Confidence, Team Working Ability
Skills evaluated in this interview
Anonymous
Interview Questionnaire
4 Questions
- Q1. Write a C code for printing Febonacci Series upto n elements
- Ans.
C code for printing Fibonacci Series upto n elements
Declare three variables to store the current, previous and next numbers in the series
Initialize the previous and current variables to 0 and 1 respectively
Use a loop to print the next number in the series by adding the previous two numbers
Loop should run n times to print n elements in the series
- Q2. Question related to family background
- Q3. What are your hobbies?
- Q4. What are your strengths and weaknesses?
Interview Preparation Tips
Experience: Questions were from easy to moderate level. No negative marking, so attempt all.
Tips: Keep your mind open and practice aptitude problems on a daily basis.
Round: Group Discussion
Experience: There were 21 students selected out of which two teams of 10 and 11 students were formed. Both the groups were given a topic and each one of us had to express our views.
Tips: Don't get nervous, just speak whatever you think. Don't yell or speak at loudly, just keep calm and put your points forward.
Duration: 20 minutes
Round: Technical Interview
Experience: Apart from the above questions some puzzles and DBMS questions and a few basic C questions were also asked. We were given enough time to think and answer.
Tips: Do not be in a hurry. Think properly what you are going to say, whether it is right or not and then only answer.
Round: HR Interview
Experience: The HR round was a good one. He tried to test my thinking capabilities and reasoning capabilities
Tips: Answer every question honestly.
General Tips: All the four rounds were elimination rounds and the final result was announced based on cumulative performance. So, be patient and give your best.
Skill Tips: Try to answer every properly
Skills: IQ, Basic Coding Skills, Problem Solving Skills
College Name: NIT ALLAHABAD
Motivation: The company visited our college campus. Also, one of my relatives in in Ericsson at a very high post and is quite happy working here.
Skills evaluated in this interview
I was interviewed in Mar 2017.
Interview Questionnaire
8 Questions
- Q1. Basics of networking
- Q2. Data structures
- Q3. Sql
- Q4. Introduction
- Q5. Final year project
- Q6. Why should I hire you?
- Ans.
I have the technical skills, experience, and passion to deliver high-quality software solutions.
I have a strong background in programming languages such as Java, Python, and C++.
I have experience working on complex software projects and collaborating with cross-functional teams.
I am passionate about staying up-to-date with the latest technologies and trends in software development.
I am a quick learner and have a strong...
- Q7. Why Ericsson?
- Ans.
Ericsson is a global leader in telecommunications technology with a strong focus on innovation and career development.
Global leader in telecommunications technology
Strong focus on innovation
Opportunities for career development
- Q8. About relocation
Interview Preparation Tips
Experience: The test which I wrote was based on cocubes. quants was easy, one can easily score 50 percent if they refer rs agarwal and logical was easy but it takes more time and verbal was neither easy nor tough. One thing I want to advice try doing verbal first so that u can save time and then go to quant and logical. After the test we got the results out of 160 students 51 cleared the test. I was one among them.
Duration: 45 minutes
Total Questions: 45
Round: Technical Interview
Experience: Keep ur cool in the technical. people are friendly. Think before you answer twice they may ask u puzzles as well. So be prepared for it. Final year project is a must, they are gonna ask u the details how you implement stuffs in your project. After my technical out of 51 students around 30 cleared this round. I was one among them.
Round: HR Interview
Experience: Don't be scared guys. Hr is just a casual one. finally around 15 were selected from my college including me. I am very happy with the result. best of luck guys. Do well!!!
Tips: Keep your cool. stay confident that's all I can tell. Once you clear technical one can easily clear Hr round.
Skills: Communication, Technical Skill
College Name: JSS Academy of Technical Education - JSSATE
I applied via Job Fair and was interviewed before Feb 2021. There were 5 interview rounds.
What is aptitude test?
Online study and off-line which one is better?
Someone not interested in assignments.
(2 Questions)
- Q1. Why you choice to join with us
- Ans. Because write now Indias largest and most trusted education system is BYJU'S. thats why not one me everyone want to join his/her children in BYJU'S.
- Q2. What is more important to you education or money?
- Ans. Obviously is education because educated person make money so easily and how to hold the mobey they know very well
Interview Preparation Tips
I applied via Company Website and was interviewed before Mar 2020. There was 1 interview round.
Interview Questionnaire
3 Questions
- Q1. Write a program on bubble sort ?
- Ans.
Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements and swaps them if they are in the wrong order.
Start from the first element and compare it with the next element
If the first element is greater than the next element, swap them
Repeat this process for all elements in the list
Continue this process until no more swaps are needed
- Q2. Define Turing Machine ?
- Ans.
A Turing Machine is a theoretical device that can simulate any algorithmic computation.
It was proposed by Alan Turing in 1936 as a model for computation.
It consists of a tape, a head that can read and write symbols on the tape, and a set of rules for transitioning between states.
It can simulate any algorithmic computation, making it a powerful tool for theoretical computer science.
It is often used as a theoretical basi...
- Q3. Explain hash function
- Ans.
A hash function is a mathematical function that converts input data of arbitrary size into a fixed-size output.
Hash functions are used to index data in hash tables.
They are also used in cryptography to securely store passwords.
Examples of hash functions include MD5, SHA-1, and SHA-256.
Interview Preparation Tips
Skills evaluated in this interview
I applied via Job lever and was interviewed before Sep 2021. There were 2 interview rounds.
Easy leetcode code 2 questions , HTML5 css javascript simple screen design
(1 Question)
- Q1. Oop, Simple coding javascript, react basic, sql basic
Interview Preparation Tips
prashant kumar saxena
I applied via Approached by Company and was interviewed before Sep 2021. There were 2 interview rounds.
(2 Questions)
- Q1. Tell me about your self - what you know about Byjus
- Q2. What's your weakness
Interview Preparation Tips
- Sales
- IT
- Educational Sales
- Education Counseling
I was interviewed before Mar 2021.
Round duration - 15 minutes
Round difficulty - Easy
This was a group discussion round where we were divided into groups of 10 and we had 15 minutes for GD.
(6 Questions)
Round duration - 60 minutes
Round difficulty - Medium
This is all about how good you are with the fundamentals. Out of 10 I would give it a 6.5 on difficulty.
- Q1.
Reverse the String Problem Statement
You are given a string
STRwhich contains alphabets, numbers, and special characters. Your task is to reverse the string.Example:
Input:
STR = "abcde"
Output:
"e...
- Ans.
Reverse a given string containing alphabets, numbers, and special characters.
Iterate through the string from the end to the beginning and append each character to a new string.
Use built-in functions like reverse() or StringBuilder in languages like Python or Java for efficient reversal.
Handle special characters and numbers while reversing the string.
Ensure to consider the constraints on the length of the string and the
- Q2. What is a deadlock?
- Ans.
A deadlock is a situation in which two or more processes are unable to proceed because each is waiting for the other to release a resource.
Occurs in multitasking environments where processes compete for limited resources
Can be resolved using techniques like deadlock prevention, deadlock avoidance, and deadlock detection
Example: Process A holds Resource X and waits for Resource Y, while Process B holds Resource Y and wa
- Q3. What is a thread?
- Ans.
A thread is a lightweight sub-process that allows concurrent execution within a single process.
Threads share the same memory space within a process.
Threads are used to achieve parallelism and improve performance.
Examples of threads include the main thread in a program and worker threads in a multi-threaded application.
- Q4. What is the difference between Multiprocessing and Multiprogramming?
- Ans.
Multiprocessing involves multiple processors executing multiple tasks simultaneously, while multiprogramming involves multiple programs sharing a single processor by switching between them.
Multiprocessing utilizes multiple processors to execute multiple tasks concurrently.
Multiprogramming involves multiple programs sharing a single processor by switching between them.
Multiprocessing is more efficient in terms of perfor...
- Q5. Can you explain the process life cycle in an operating system?
- Ans.
Process life cycle in an operating system involves creation, execution, termination, and resource management.
Creation: When a process is created, it is assigned a unique process ID and allocated necessary resources.
Execution: The process is then scheduled by the operating system to run on the CPU.
Termination: Once the process completes its task or is terminated by the user, it is removed from memory.
Resource Management...
- Q6. What are the differences between Windows XP and Windows 7?
- Ans.
Windows XP and Windows 7 are both operating systems developed by Microsoft, but they have several key differences.
User interface: Windows 7 has a more modern and user-friendly interface compared to Windows XP.
Performance: Windows 7 is generally faster and more stable than Windows XP.
Security: Windows 7 has more advanced security features and updates compared to Windows XP.
Hardware support: Windows 7 supports newer hard...
(6 Questions)
Round duration - 60 minutes
Round difficulty - Easy
Technical round with questions on DBMS and Networking mainly.
- Q1. What is the difference between RDBMS and DBMS?
- Ans.
RDBMS is a type of DBMS that stores data in a structured format with relationships between tables.
RDBMS enforces referential integrity and allows for normalization of data.
DBMS is a general term for any system that manages databases, while RDBMS specifically refers to relational databases.
Examples of RDBMS include MySQL, Oracle, and SQL Server.
Examples of DBMS include MongoDB and Redis.
- Q2. What is an Object-Oriented Database Management System (OODBMS)?
- Ans.
An Object-Oriented Database Management System (OODBMS) is a type of database management system that supports the creation and management of objects in a database.
OODBMS stores data in the form of objects, which can contain attributes and methods.
It allows for complex data structures and relationships to be represented more easily.
Examples of OODBMS include db4o, ObjectDB, and ObjectStore.
- Q3. How do you find the number of unique values in a SQL database?
- Ans.
Use the COUNT DISTINCT function in SQL to find the number of unique values in a database.
Use the COUNT DISTINCT function along with the column name to count the number of unique values in that column.
For example, SELECT COUNT(DISTINCT column_name) FROM table_name;
You can also use GROUP BY to find the number of unique values for multiple columns.
- Q4. What is the difference between a hub and a switch in networking?
- Ans.
A hub operates at the physical layer and broadcasts data to all devices on the network, while a switch operates at the data link layer and forwards data only to the intended recipient.
Hub operates at the physical layer, while switch operates at the data link layer
Hub broadcasts data to all devices on the network, while switch forwards data only to the intended recipient
Switch is more efficient and secure compared to a
- Q5. Can you explain the different OSI layers?
- Ans.
The OSI (Open Systems Interconnection) model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven different layers.
Physical Layer: Deals with the physical connection between devices. Example: Ethernet cables.
Data Link Layer: Responsible for node-to-node communication. Example: MAC addresses.
Network Layer: Manages routing of data packets. Example: IP addresses.
T...
- Q6. What are the different protocols supported at each OSI layer?
- Ans.
Different protocols supported at each OSI layer
Layer 1 (Physical): Ethernet, Wi-Fi, Bluetooth
Layer 2 (Data Link): MAC, PPP, HDLC
Layer 3 (Network): IP, ICMP, ARP
Layer 4 (Transport): TCP, UDP, SCTP
Layer 5 (Session): NetBIOS, PPTP
Layer 6 (Presentation): SSL, TLS
Layer 7 (Application): HTTP, FTP, SMTP
Round duration - 15 minutes
Round difficulty - Easy
IF you make it to the HR round you are selected. All 28 that attended got selected . It was more like stuff for formality. The usual questions.
Interview Preparation Tips
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
I applied via Campus Placement
Interview Preparation Tips
Experience: basic Guesstimation questtions,
for eg. estimate the no of sleeping all over the world right now.
Tips: Walk the interviewer through your thinking process.
donot make vague guesses.
Round: HR Interview
Experience: 1 Tell us 5 reasons why we should hire you.
2 being an electrical engineering student, why have you applied for a analytic s/operations job profile.
Skills: Ability To Cope Up With Stress, Guesstimation Cases
Duration: 2
College Name: IIT Madras
Shobhit Shrivas
I applied via Campus Placement
Interview Questionnaire
7 Questions
- Q1. I was asked 2 questions from a course called principle of economics, such as what is elasticity etc
- Q2. It was again from my course work they asked me how to solve linear programming problem graphically
- Q3. Then they asked me to tell me about my self
- Q4. They asked me to estimate number of microwaves manufactured in india per year
- Q5. Then I was asked what is my biggest achivement till now
- Q6. Then I was asked if I have any question for them
- Q7. He gave me 15 min to convence him so that he hirs me for his company
Interview Preparation Tips
Experience: They were mainly looking for people who has or worked in Start ups or who has some good PORs. They also shortlisted students with CGPA of more than 7.5.
Tips: Try taking good PORs and maintain a healthy CGPA. Make a one page resume.
Round: Technical Interview
Experience: It was good. This was my first interview, I was bit nurvous for obvious reasons but controlled my emotions perfectly. As interview progressed things started becoming normal.
Tips: Be confidant of what ever you speak. Try hidding you nervousness, its okay if you are not able to answer any question but make strong comeback in next.
Round: HR Interview
Experience: I was very confidant of myself and told some 8-9 qualities that I have and gave examples of where I used them in past.
Tips: Again be very confidant. Its okay if you fumble in between but make strong comeback. look into the eyes of interviewer it shows you are confidant. Don't lie, be yourself.
General Tips: Keep working hard, there is no subsitute of hardwork, even in IITs. And don't forget sometimes you have to loose small battels to win Wars.
All the best:)
Skills:
Duration: 8-10weeks
College Name: IIT Madras
Motivation: Oyo is progressing very fast and I wanted to be the part of there amazing journey.
Funny Moments: I kept looking into the eyes of both of my interviewer just to show them I was very confidant but the reality is I was very nervous and I was bluffing them:). After interview I had a headache.
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