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3M Data Engineer Interview Questions and Answers
3M Data Engineer Interview Experiences
1 interview found
Prateek Pandey
SQL functions and medium level query questions.
Top trending discussions
Interview questions from similar companies
I was interviewed before Mar 2021.
(7 Questions)
Round duration - 60 Minutes
Round difficulty - Medium
This round started with some questions from Programmable Logic Controllers or PLC followed by some basic questions from Intel 8051 Microcontroller.
- Q1. What are the general functions of a Programmable Logic Controller (PLC)?
- Ans.
PLCs are used to control machinery and automate processes in industrial settings.
Monitoring inputs from sensors
Executing control algorithms
Communicating with other devices
Logging data for analysis
Implementing safety functions
Examples: controlling a conveyor belt, regulating temperature in a furnace
- Q2. Can you describe the basic elements in Ladder logic programming?
- Ans.
Ladder logic programming is a graphical programming language used for PLCs, with basic elements like contacts, coils, timers, and counters.
Ladder logic consists of rungs, which are made up of inputs (contacts) and outputs (coils).
Contacts represent conditions that must be met for the output to be energized.
Coils are outputs that are energized when the conditions of the contacts are met.
Timers and counters are used to c...
- Q3. What are the different types of PLC inputs and outputs?
- Ans.
PLC inputs and outputs include digital inputs, digital outputs, analog inputs, and analog outputs.
Digital inputs: used for receiving binary signals (on/off, high/low). Examples: push buttons, limit switches.
Digital outputs: used for sending binary signals. Examples: relays, solenoids.
Analog inputs: used for receiving continuous signals. Examples: temperature sensors, pressure transducers.
Analog outputs: used for sendin...
- Q4. What are the advantages and disadvantages of the S7 controller?
- Ans.
The S7 controller offers high performance and flexibility but can be complex to program and expensive.
Advantages: high performance, flexibility, scalability
Disadvantages: complexity in programming, expensive
Example: S7-1200 offers fast processing speeds and can be easily expanded with additional modules
Example: Programming for S7 controllers may require specialized training and expertise
- Q5. Can you explain the time stamp available in the S7-200 PLC?
- Ans.
The time stamp in S7-200 PLC is used to record the time when a specific event occurs.
Time stamp is a feature in S7-200 PLC that records the time when a specific event happens.
It helps in tracking the sequence of events and troubleshooting issues.
Time stamp can be used to monitor the performance of the PLC system.
Example: A time stamp can be recorded when a sensor detects a change in temperature.
Example: Time stamp can ...
- Q6. Could you explain Jnc in the context of microcontrollers?
- Ans.
Jnc stands for Jump and Call in the context of microcontrollers.
Jnc is an instruction used in microcontrollers to jump to a specified address if the carry flag is not set.
It is commonly used in conditional branching operations in microcontroller programming.
For example, in 8051 microcontroller assembly language, the instruction JNC label will jump to the specified label if the carry flag is not set.
- Q7. What are the types of interrupts in the Intel 8051 microcontroller?
- Ans.
The types of interrupts in the Intel 8051 microcontroller include external hardware interrupts, timer interrupts, and serial communication interrupts.
External hardware interrupts are triggered by external devices connected to the microcontroller.
Timer interrupts are generated by the internal timers of the microcontroller.
Serial communication interrupts occur when data is received or transmitted through the serial port.
...
(6 Questions)
Round duration - 50 Minutes
Round difficulty - Medium
This round was heavily inclined towards Operating System and Computer Networks and the interviewer asked questions revolving around the fundamentals of the subject.
- Q1. What is a bootstrap program in an operating system?
- Ans.
A bootstrap program is a small program that initializes the operating system on a computer.
Bootstrap program is stored in ROM or EEPROM and is executed when the computer is powered on.
It loads the operating system kernel into memory and starts its execution.
Bootstrap program is responsible for setting up the initial state of the operating system.
Examples include BIOS (Basic Input/Output System) in PCs and UEFI (Unified
- Q2. Can you explain demand paging?
- Ans.
Demand paging is a memory management scheme where pages are only brought into memory when they are demanded by the program.
Pages are loaded into memory only when needed
Helps in reducing the amount of physical memory required
Improves overall system performance by allowing more processes to run simultaneously
Commonly used in virtual memory systems
- Q3. Can you explain any 5 essential UNIX commands?
- Ans.
Five essential UNIX commands are ls, cd, pwd, mkdir, and rm.
ls - list directory contents
cd - change directory
pwd - print working directory
mkdir - make directory
rm - remove files or directories
- Q4. What are the different types of VPN?
- Ans.
Different types of VPN include remote access VPN, site-to-site VPN, and client-to-site VPN.
Remote access VPN allows individual users to connect to a private network from a remote location.
Site-to-site VPN connects entire networks together over the internet.
Client-to-site VPN allows individual devices to connect to a private network.
Examples include OpenVPN, IPsec, and SSL VPN.
- Q5. Can you describe the OSI Reference Model?
- Ans.
The OSI Reference Model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers.
The OSI Reference Model stands for Open Systems Interconnection Reference Model.
It consists of seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Each layer has specific functions and communicates with the adjacent layers for data trans...
- Q6. Can you explain the TCP and UDP protocols?
- Ans.
TCP is a connection-oriented protocol that ensures reliable data delivery, while UDP is a connectionless protocol that focuses on speed.
TCP stands for Transmission Control Protocol and is used for reliable data transmission.
TCP establishes a connection between sender and receiver before data transfer.
TCP uses sequencing and acknowledgment to ensure data integrity.
UDP stands for User Datagram Protocol and is used for fa...
(1 Question)
Round duration - 30 Minutes
Round difficulty - Easy
This is a cultural fitment testing round .HR was very frank and asked standard questions. Then we discussed about my
role.
- Q1. What is something about you that is not included in your resume?
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 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 was interviewed in Apr 2017.
Interview Questionnaire
15 Questions
- Q1. What are you currently doing in your job profile?
- Ans.
I am currently responsible for designing, implementing, and maintaining system infrastructure for our organization.
Designing system architecture to meet business requirements
Implementing new technologies and solutions to improve system performance
Maintaining system infrastructure to ensure high availability and security
Troubleshooting and resolving system issues as they arise
- Q2. What is system configuration?
- Ans.
System configuration refers to the process of setting up and arranging hardware and software components to work together efficiently.
System configuration involves setting up hardware and software components to work together efficiently
It includes configuring network settings, installing drivers, and setting up user accounts
Examples of system configuration tools include Microsoft System Center Configuration Manager and ...
- Q3. What is the disadvantage or drawback in S7 controller?
- Ans.
The S7 controller has limited scalability and flexibility compared to other controllers.
Limited number of I/O points
Limited memory capacity
Limited processing power
Limited communication options
Limited support for advanced programming languages
Limited compatibility with third-party devices
Limited ability to handle complex control algorithms
Limited fault diagnostics capabilities
- Q4. Same question but in depth.
- Q5. Like draw system configuration
- Q6. Explain topologies used/protocol etc
- Ans.
Topologies and protocols used in networking
Topologies: Bus, Star, Ring, Mesh, Hybrid
Protocols: TCP/IP, HTTP, FTP, SMTP, DNS
Ethernet, Wi-Fi, Bluetooth are common networking technologies
Network security protocols: SSL, TLS, IPSec
Routing protocols: OSPF, BGP, RIP
- Q7. Tell me about your self?
- Ans.
I am a dedicated and experienced System Engineer with a strong background in network infrastructure and troubleshooting.
Over 5 years of experience in designing, implementing, and maintaining complex systems
Proficient in network protocols such as TCP/IP, DNS, DHCP
Skilled in troubleshooting hardware and software issues
Certified in Cisco CCNA and CompTIA Network+
Strong communication and problem-solving skills
- Q8. Family condition and persons?
- Ans.
I come from a close-knit family of four, including my parents and younger sister.
Family of four: parents and younger sister
Close-knit family
Supportive family members
Regular family gatherings and activities
- Q9. Why you want to join us?
- Ans.
I am passionate about utilizing my technical skills to contribute to innovative projects and collaborate with a talented team.
Passionate about technology and innovation
Excited to work with a talented team
Looking for opportunities to utilize technical skills
- Q10. Are you sure this profile matches to your career goal.
- Ans.
Yes, this profile aligns with my career goal as a System Engineer.
My career goal is to work in the field of system engineering
I have relevant education and experience in system engineering
I am passionate about technology and problem-solving, which are key aspects of system engineering
- Q11. Why you want to switch?
- Ans.
I want to switch to explore new challenges and opportunities for growth in my career.
Seeking new challenges to enhance my skills and knowledge
Opportunity for career growth and advancement
Interested in working with new technologies or industries
- Q12. What is that thing which attract you for this job?
- Ans.
The opportunity to work on complex systems and solve challenging problems in a dynamic environment.
Opportunity to work on complex systems
Solving challenging problems
Dynamic work environment
- Q13. What is the reason you left your current job profile?,because my profile was Automation engineer.
- Q14. Your family baackground?
- Ans.
My family background is diverse and includes a mix of professions and interests.
My parents are both engineers, which inspired me to pursue a career in the same field.
I have siblings who are in the medical field, providing a different perspective on healthcare.
We have a strong emphasis on education and continuous learning in our family.
Family gatherings often involve discussions about technology, science, and current ev...
- Q15. What is that quality in you which suits this job?
- Ans.
My problem-solving skills and attention to detail make me a perfect fit for this role.
Strong problem-solving skills
Attention to detail
Ability to work well under pressure
Experience with troubleshooting complex systems
Strong communication skills
Interview Preparation Tips
Experience: First of all i applied through india's most famous job portal naukri.com.
This opening comes through a consultant [ pacific IT solutions ],first my resume was shortlisted by this consultant,after that they contact me on my mobile number verified with naukri.com,for avalibility and interest for change and tell me that they forward ,y resume to siemens HR and if they will shortlist you then you will get a mail for F2F round from them.
Tips: Special tips for this round are:-
Always update your profile daily and try to follow up more n more consultant/recruiter.
Round: Technical Interview
Experience: I reached interview location on time,then i submit my resume in reception ,after 30 min my interview starts with all these question given above,then they told me to wait outside.
Tips: 1)Be confident and in formal look.
2)What ever is written in your resume you must be familier with this.
3)Dont put all the certification/courses/skill in your resume.try to put only those things which you know vwry well.
4)Make your resume as per job demand.Heighlight your those skills which matches to job.
5)Dont be over smart if you know the answer of given question.
Round: Technical Interview
Experience: After Clearing my first round ,interviewer call me for second round on the same day,after fiew hour,the interviewer is very frank,they ask same questions and they were little bit checking my interest also towards job.
Tips: In this round the interviewer in more experienced so for him it is very easy to catch you knolwdge level.So be confident,try to answer with little bit diplomatic,and try to explain with practical experiances as musch as possible.
Round: Behavioural Interview
Experience: This Round name is Managerial round.In this round they checked my interest towards job.my family condition and dependent person.
Tips: Be confident
Listen question carefully because this round is completely diplomatic.
Try to answer smartly and diplomatic.
And try to win the trust of interviewer.
Round: HR Interview
Experience: After clearing managerial round.hr called me for this,HR is very frank and make a very comfort atmosphere at the time of interview.little bit discussing about jonb profile and then discuss salary,and finall shaking hand said.if you will get selected then we will inform you before xyz day.
I after 4 days i get a call from hr about my selection with a offer letter.
Tips: Be frank
But Not over confident
Skills evaluated in this interview
Senior Engineer Interview Questions & Answers
Honeywell Automation
Tulluri Vinay Kumar
posted on 22 Feb 2015
Interview Questionnaire
2 Questions
- Q1. Standard HR questions
- Q2. Questions based on my POR's and extra curricular activities
Interview Preparation Tips
Experience: Good projects and internships helped me to get through this round
Round: Test
Duration: 60 minutes
Round: Technical Interview
Experience: Questions related to signal processing (included image signal processing as well), control and communications. Also there were few technical questions based on the internships and the projects done. This interview lasted for about 30 mins.
Round: HR Interview
Experience: 45 mins of HR round. All the standard HR questions were asked and questions were based on each and every point that you have put up in the resume
College Name: IIT MADRAS
Software Engineer Interview Questions & Answers
Honeywell Automation
Divyam Rastogi
posted on 22 Mar 2015
Interview Preparation Tips
Experience: General resume shortlisting out of nearly 400 applicants. Shortlisted close to 150 students.
Round: Technical Interview
Experience: Mostly questions from the resume were asked. They just wanted to know the types of projects I had done.
Tips: Make sure you know everything about what you write in your resume.
Round: Technical Interview
Experience: Another round of technical interview. Questions were more focused on the kind of profile they were offering, mostly to judge whether you are right for the job or not.
Skills: Confidence, Core knowledge
College Name: IIT BOMBAY
Interview Questionnaire
2 Questions
- Q1. Description about me
- Q2. Weakness in professional life
- Ans.
My weakness is sometimes taking on too much work and struggling to delegate tasks effectively.
Difficulty delegating tasks
Tendency to take on too much work
Working on improving time management skills
Interview Preparation Tips
Experience: They intimated as aptitude but it included Verbal, Quants and basics of programming and data structures & algorithm.
Round: Technical interview round 1
Experience: In this round I was asked about flight mechanics & dynamics and controls’ by giving several conditions of practical importance, some part of engine structures and thermal science, my earlier projects and questions on that, some questions from the internship’s work and M.Tech thesis work. Very fundamental as well as complex questions were asked while explaining about the projects and thesis work.
Round: technical interview round 2
Experience: I was sent to the panel interviewing for mechanical students and there I was asked questions from various subjects as well as for various conditions given on spot. Including both the technical interviews, I was asked questions from around 9-10 subjects of mechanical engineering. Apart from the questions from the course work, half of the interview was focused on the projects that I did earlier. I was asked to explain about the projects and give good insights of my contributions in that and accordingly I was asked questions from that as well. Later part of the technical round was focused for my thesis work. They started asking about the motivation behind the topic of the thesis and the technical platform set so far for the same. Concluding questions were from the company’s work and how I would be able to relate my expertise and thesis work for their benefit.
Round: HR Interview
Experience: HR round was more or less usual. Description about me and weaknesses in professional life were asked. The tricky one was one particular question about joining Honeywell and at the end of my answer, I was asked to compare Honeywell and the stalwarts of aerospace industry on my answer’s ground.
General Tips: Revise the course works, some part of the projects, be focused for profiles and prepare accordingly. Prior knowledge about companies work and the profile helps a lot. Sound knowledge of thesis work, approach and the applications, motivation behind the topic and the work completed till the placement season starts should clearly be checked. If you are not good at programming and DS & algo then revise the basics of these (helps for aptitude). Be mentally prepared for multiple rounds of technical interviews. Shape yourself according to the profile and surf through the company’s site beforehand.
Get some suggestions and feedback from seniors (specifically, M.tech students should talk to seniors, fellow students and lab mates who have been in industries) for technical interviews. Focus on your approach towards the problem for the worst case.
During technical interview, don’t try to brag about the topic that you are not sure about. They sometimes want to test your approach and attitude for the problem given to you (which will be out of your comfort zone) rather than the accuracy of the answer. Since verbal was also the part of aptitude, don’t forget to look that during your preparation.
College Name: IIT Kanpur
Senior Engineer Interview Questions & Answers
Honeywell Automation
Devangi Mistry
posted on 19 Aug 2015
Interview Questionnaire
5 Questions
- Q1. Questions about flight mechanics and dynamics and controls
- Q2. Questions about mechanical engineering
- Q3. Questions on the thesis one has worked on and various projects and internships
- Q4. Questions based on practical situations
- Q5. Questions on basics of material, fundamentals of continuum mechanics, thermal science, parts of engine structure, etc
Interview Preparation Tips
Experience: I was guided by placement office quite appreciably for preparation of resume. First by one to one interaction and second by suggesting to talk to the seniors who are either injob or are hereafter the job. As it is always suggested about resume that, it reflects you in brief, you have to get it as good as you can. I followed the guidelines, made the first draft, got it corrected from some of my friends who are working in industries and got feedbacks from students who have experience from industries.
Round: APTITUDE TEST
Experience: It was intimated as aptitude but it included Verbal, Quants and basics of programmingand data structures & algorithm.
Round: Technical Interview
Experience: I went through two technical rounds and both of these included questions starting from the very basics of materials to the continuum mechanics’ fundamentals and applications. In the first round I was asked about flight mechanics & dynamics and controls’ by giving several conditions of practical importance, some part of engine structures and thermal science, my earlier projects and questions on that, some questions from the internship’s work and M.Tech thesis work. Very fundamental as well as complex questions were asked while explaining about the projects and thesis work. For the second round, I was sent to the panel interviewing for mechanical students and there I was asked questions from various subjects as well as for various conditions given on spot. Including both the technical interviews, I was asked questions from around 9-10 subjects of mechanical engineering. Apart from the questions from the course work, half of the interview was focused on the projects that I did earlier. I was asked to explain about the projects and give good insights of my contributions in that and accordingly I was asked questions from that as well. Later part of the technical round was focused for my thesis work. They started asking about the motivation behind the topic of the thesis and the technical platform set so far for the same. Concluding questions were from the company’s work and how I would be able to relate my expertise and thesis work for their benefit.. In the morning, Honeywell started it’s processing at around 6.30 am and I went for the first technical round at around 7 am. After some basic questions from the resume I was asked about the flight mech & controls. After sometimes the interviewer told me about his background, which was avionics and then he started from that. It must have gone over around 45 minutes. Second round of Honeywell was gruelling and I felt little uncomfortable at some points.
Round: HR Interview
Experience: HR round was more or less usual. Description about me and weaknesses in professional life were asked. The tricky one was one particular question about joining Honeywell and at the end of my answer, I was asked to compare Honeywell and the stalwarts of aerospace industry on my answer’s ground.
General Tips: Since I was looking only for the core aerospace companies, I was not looking very much about the aptitude and GD (specially, GD was not required). I was focusing about the technical side of the preparation, coursework, projects that I have done earlier and thesis work. I used the material provided by SPO for preparing the aptitude test solved some CAT papers and some online resources were useful. Further, I referred some core course works, specifically, thermal, fluid, aerodynamics, propulsion, structures & materials, materials & metallurgy and flight mechanics & dynamics for technical interviews.
Revise the course works, some part of the projects, be focused for profiles and prepare accordingly. Prior knowledge about companies work and the profile helps a lot. Sound knowledge of thesis work, approach and the applications, motivation behind the topic and the work completed till the placement season starts should clearly be checked. If you are not good at programming and DS & algo then revise the basics of these(helps for aptitude). Be mentally prepared for multiple rounds of technical interviews. Shape yourself according to the profile and surf through the company’s site beforehand. Get some suggestions and feedback from seniors(specifically, M.tech students should talk to seniors, fellow students and labmates who have been in industries) for technical interviews. Focus on your approach towards the problem for the worst case. During technical interview, don’t try to brag about the topic that you are not sure about. They sometimes want to test your approach and attitude for the problem given to you (which will be out of your comfort zone) rather than the accuracy of the answer. Since verbal was also the part of aptitude, don’t forget to look that during your preparation. Final Tips : Don’t lose hope and be focused for the profile that you are interested in and narrow down the companies accordingly. It’s all your attitude, past experience (both academics and professional) and preparation for the placements that will help you to nail it. 1st, 2nd or any other day or any other company (as long asthe profile matches with your interest) don’t matter much. At the end of the day, getting in the core-profile is what matters most (if you are interested incore alone) and if it is your preferred company then it’s a boon. Have faith in yourself and believe in the next option if you don’t get the first one.
College Name: IIT KANPUR
Motivation: Other companies that I was shortlisted for : GE, Rolls-Royce, Airbus. Analysis of available options (based on profile, growth, compensation, BrandName, etc) :As for the first day, GE didn’t seem inclined in taking Aerospace Engineering students and I was not looking for Rolls-Royce very interestingly. I was mainly focusing on Honeywell, Eaton and Airbus and was shortlisted to interview with these three. Because of Honeywell’s versatility and the involvement in R&D(as I got the feedback from people working in there), I was focusing mainly on Honeywell. And it was very much favourable from compensation point of view as well. Finally I was selected in both Honeywell and Eaton, and chose Honeywell.
Interview Questionnaire
5 Questions
- Q1. Questions on Fluid Mechanics, Thermodynamics, Turbo-machinery etc
- Q2. Why would you like to join the company ?
- Ans.
I am excited to join the company because of its reputation for innovation and commitment to excellence.
I am impressed by the company's track record of developing cutting-edge technology.
I am drawn to the company's culture of collaboration and teamwork.
I am excited about the opportunity to work with a talented and experienced team of engineers.
I believe that the company's focus on quality and customer satisfaction align...
- Q3. Where do you see yourself 10 years afterwards ?
- Ans.
In 10 years, I see myself as a highly experienced engineer leading a team of talented individuals towards innovative solutions.
Leading a team of engineers towards successful project completion
Continuing to learn and stay up-to-date with new technologies
Mentoring and guiding junior engineers
Contributing to the growth and success of the company
Exploring opportunities for professional development and growth
- Q4. Failures and successes during your careeer
- Ans.
I have had both failures and successes in my career as a Senior Engineer.
One of my biggest successes was leading a team that developed a new software system that increased efficiency by 50%.
I also had a failure when I underestimated the complexity of a project and it ended up being delayed by several months.
Another success was implementing a new process that reduced errors by 75%.
I learned from a failure when I didn't ...
- Q5. Questions on resume
Interview Preparation Tips
Experience: The test included General quantitative and logical reasoning, verbal reasoning, questions on basic topics of Mechanical Engineering like Thermodynamics, Mechanics of Solids, Energy Systems, Manufacturing etc.
Round: Technical Interview
Experience: Advanced questions on the topic of your interest specifically related to Aerospace and Mechanical Engineering like Fluid Mechanics, Thermodynamics, Turbo-machinery etc, questions like what do you know about the company.
General Tips: Always follow your interest while choosing a suitable job. If you are not sure about your interest, keep options open and try to get information on all those options and select accordingly. Never run after money only. One must prioritize his/her interests first, then the kind of work in the company and then the package.
Prepare for the technical profiles by studying core subjects which interests you the most, but a person needs to have basic knowledge of other topics related to your department also.
Apply for the company only after gaining sufficient knowledge about it. Identify your interest and what kind of work you like, then apply to the company which suits your style of working and is apt for you to pursue your interests. One must not apply to all the companies just because everyone is applying. One must judge whether he/she is capable for that job or not and then decide in which companies to apply.
Try to be confident with your answers and give genuine replies in HR interviews. One must not give vague answers and change views as this would clearly give the indication that you are not able to give clear answers or you are making them up.
College Name: IIT Kanpur
I applied via Naukri.com and was interviewed before Jun 2019. There were 3 interview rounds.
Interview Questionnaire
4 Questions
- Q1. Implement stack data structure
- Ans.
Implement stack data structure
Use an array or linked list to store elements
Push operation adds element to top of stack
Pop operation removes element from top of stack
Peek operation returns top element without removing it
- Q2. How global variable work , how its shared by all function
- Ans.
Global variables are accessible from any part of the program and can be modified by any function.
Global variables are declared outside of any function.
They can be accessed and modified by any function in the program.
If a function modifies the value of a global variable, the new value is visible to all other functions.
Global variables can be useful for sharing data between functions.
However, overuse of global variables
- Q3. Program to transpose the matrix
- Ans.
Program to transpose a matrix
Iterate through rows and columns of the matrix
Swap the elements at (i,j) and (j,i) positions
Return the transposed matrix
- Q4. Internal implementation of pre and post fix operator
- Ans.
Pre and post fix operators are used to increment or decrement a value before or after it is used in an expression.
Pre-fix operator (++x) increments the value of x and returns the new value.
Post-fix operator (x++) returns the value of x and then increments it.
Both operators can be used with variables of numeric data types.
They can also be used with pointers to increment or decrement the memory address they point to.
Interview Preparation Tips
Skills evaluated in this interview
I applied via Recruitment Consultant and was interviewed in Oct 2020. There was 1 interview round.
Interview Questionnaire
2 Questions
- Q1. Write a logic given to you in any plc software that you have
- Ans.
Logic for PLC software
Define inputs and outputs
Create ladder logic diagram
Test and debug program
- Q2. Tell me something about the projects you have handled
Interview Preparation Tips
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