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Qualcomm L2 Engineer Interview Questions, Process, and Tips

Updated 5 Feb 2024

Qualcomm L2 Engineer Interview Experiences

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L2 Engineer Interview Questions & Answers

user image Anonymous

posted on 5 Feb 2024

Interview experience
2
Poor
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(5 Questions)

  • Q1. What is leakage current in cmos
  • Ans. 

    Leakage current in CMOS refers to the small amount of current that flows through the transistors when they are in the off state.

    • Leakage current occurs due to the imperfect insulation between the source and drain terminals of the transistors.

    • It is an undesirable phenomenon as it leads to power dissipation and can affect the performance and reliability of CMOS circuits.

    • Leakage current can be categorized into subthreshold...

  • Answered by AI
  • Q2. What are the differnet mosfet terminals
  • Ans. 

    The different terminals of a MOSFET are the gate, source, and drain.

    • The gate terminal controls the flow of current between the source and drain.

    • The source terminal is where the current enters the MOSFET.

    • The drain terminal is where the current exits the MOSFET.

    • The gate-source voltage determines the conductivity of the channel between the source and drain.

    • Examples of MOSFETs include enhancement-mode and depletion-mode MO

  • Answered by AI
  • Q3. What is ohms law
  • Ans. 

    Ohm's law states that the current flowing through a conductor is directly proportional to the voltage applied across it and inversely proportional to its resistance.

    • Ohm's law is expressed as V = IR, where V is the voltage, I is the current, and R is the resistance.

    • It helps in understanding the relationship between voltage, current, and resistance in an electrical circuit.

    • For example, if the voltage across a resistor is...

  • Answered by AI
  • Q4. Why current flow direction is opposite to the electron flow
  • Ans. 

    The direction of current flow is opposite to the direction of electron flow due to historical convention.

    • The concept of current flow was developed before the discovery of electrons.

    • Benjamin Franklin proposed the convention of positive charge carriers, which led to the opposite direction of current flow.

    • In reality, electrons are negatively charged and flow from the negative terminal to the positive terminal of a power s...

  • Answered by AI
  • Q5. What is an inductor
  • Ans. 

    An inductor is a passive electronic component that stores energy in a magnetic field when current flows through it.

    • Inductors are typically made of a coil of wire wound around a core material.

    • They are used in electronic circuits to control the flow of current and store energy.

    • Inductors can be found in various applications such as power supplies, filters, and oscillators.

    • They are measured in units called henries (H).

    • Indu...

  • Answered by AI

Interview questions from similar companies

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Walk-in and was interviewed before Dec 2023. There were 2 interview rounds.

Round 1 - One-on-one 

(2 Questions)

  • Q1. Tell me about your roles and responsibilities
  • Ans. 

    As an L2 Engineer, my roles and responsibilities include troubleshooting technical issues, providing support to end users, and collaborating with L1 and L3 teams.

    • Troubleshooting technical issues reported by end users

    • Providing support and guidance to L1 support team

    • Collaborating with L3 engineers to resolve complex technical problems

    • Documenting solutions and best practices for future reference

    • Participating in on-call ro

  • Answered by AI
  • Q2. How can you manage the line output during the line down
  • Ans. 

    During a line down situation, managing line output involves troubleshooting, identifying the root cause, implementing solutions, and communicating with stakeholders.

    • Quickly troubleshoot to identify the root cause of the line down

    • Implement temporary solutions to restore line output if possible

    • Communicate with relevant teams and stakeholders to keep them informed

    • Work on permanent solutions to prevent future line down sit...

  • Answered by AI
Round 2 - HR 

(2 Questions)

  • Q1. Tell me about yourself
  • Ans. 

    I am a dedicated L2 Engineer with a strong background in troubleshooting and resolving technical issues.

    • Experienced in diagnosing and fixing network problems

    • Proficient in configuring and maintaining hardware and software systems

    • Skilled in providing technical support to end users

    • Certified in relevant technologies such as Cisco or Microsoft

  • Answered by AI
  • Q2. What is your salary expectations
  • Ans. 

    My salary expectations are based on my experience, skills, and the market rate for the position.

    • Research the average salary range for L2 Engineers in your area

    • Consider your level of experience and skills when determining your salary expectations

    • Be prepared to negotiate based on the company's offer and benefits package

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Be calm and well prepare to interview
Interview experience
4
Good
Difficulty level
Hard
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Campus Placement and was interviewed before Feb 2023. There were 2 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. It was an online assessment, technical questions based on manufacturing, design, quality control,SOM.
Round 2 - Aptitude Test 

It was an online ph test

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Approached by Company and was interviewed before Apr 2023. There was 1 interview round.

Round 1 - One-on-one 

(3 Questions)

  • Q1. Basic question from my field
  • Q2. Speed and feed formula
  • Ans. 

    Speed and feed formula is used in machining to determine the optimal cutting parameters for a specific material and tool.

    • Speed and feed formula calculates the spindle speed (RPM) and feed rate (IPM) for a given material and tool combination.

    • The formula takes into account factors such as material type, tool diameter, and desired surface finish.

    • For example, the formula for calculating spindle speed is: RPM = (CS x 4) / D...

  • Answered by AI
  • Q3. Difference and least count of various measuring instrument
  • Ans. 

    Difference and least count of measuring instruments

    • Difference: Range of values that can be measured by the instrument

    • Least count: Smallest change in the quantity being measured that can be detected by the instrument

    • Examples: Vernier caliper - Difference: 0-150mm, Least count: 0.02mm; Micrometer screw gauge - Difference: 0-25mm, Least count: 0.01mm

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Be calm and try to answer to the point without beating around the bush
Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
2-4 weeks
Result
Selected Selected

I was interviewed in Dec 2023.

Round 1 - One-on-one 

(6 Questions)

  • Q1. Basic of CNC functions
  • Q2. Types of pneumatics n hydralics systems
  • Ans. 

    Pneumatics and hydraulics systems are used in engineering for power transmission and control.

    • Pneumatics systems use compressed air to transmit power, commonly used in industries for automation and control.

    • Hydraulics systems use pressurized liquid (usually oil) to transmit power, commonly used in heavy machinery like excavators and hydraulic presses.

    • Pneumatics systems are generally faster but less powerful than hydrauli...

  • Answered by AI
  • Q3. What are major and minor breakdown attended and described the solutions
  • Ans. 

    Major breakdowns include server crashes, while minor breakdowns may involve software glitches.

    • Major breakdown: Server crash - Solution: Restart server and investigate root cause

    • Minor breakdown: Software glitch - Solution: Update software or restart application

    • Major breakdown: Network failure - Solution: Check network connections and troubleshoot

    • Minor breakdown: Printer jam - Solution: Clear jammed paper and reset print

  • Answered by AI
  • Q4. Parameter and keep reply related questions
  • Q5. Questions about auditing
  • Q6. Questions about Projects done in previous company
Round 2 - HR 

(2 Questions)

  • Q1. Self intro about me
  • Q2. Salary related questions

I was interviewed before May 2016.

Interview Preparation Tips

Round: written test
Experience: it was elitmus test conducted by the company itself on campus. As per my knowledge only those scoring 90 percentile got selected for round 2.
Tips: Attempt only those ques that are necessary for scoring 90+ in e litmus. Specially in verbal don't attempt more then required questions, though you might be tempted. The aim is not to score max bt to score 90+

Round: Technical Interview
Experience: This was a programming based round. I was asked to write algorithms for various array linked list based problems. There was cross questioning prompting to reduce complexity and to use different data structures for same problems.

Mostly it focused on subjects like c, data structures and ADA.
Tips: Be clear with basic of data structures and algorithms. Pointers, queue, stacks, array linked lists, sorting etc are the keywords.

Round: Technical Interview
Experience: This was a information security specific round since that was my major. In depth cross questioning on my thesis topics, honeypots, network intrusion etc. Security certificates, and on the go problems to provide security solution layer wise in different scenarios. Security concept of torrents was also asked in detail.
Tips: It was more of a security discussion and throwing of ideas about how things in a particular case could work or could not. Don't worry about right or wrong answer just be clear with your reasoning about the solution you are suggesting.

Round: Other Interview
Experience: I don't know what to name this round, but it focused mainly on developing test cases for an object. Say they gave me a stapler and said to develop a test plan listing down test cases for a given object to pass so that it can be confirmed that it is a stapler. Another scenario was with a lift.
Tips: This is one round where your presence of mind and inter personal skills matter. I think the way you present your thoughts was most important here.

Round: Behavioural Interview
Experience: This was was mostly about how would you react in a given professional situation
Like your assigned work could not be completed on time, or if you are doing something wrong with the work assigned.
Tips: This is all about inter personal skills and putting your best foot forward :)

College Name: Indira Gandhi Delhi Technical University For Women, Delhi

I was interviewed before Apr 2021.

Round 1 - Face to Face 

(7 Questions)

Round duration - 60 minutes
Round difficulty - Easy

Technical Interview round with questions on OOPS and OS mainly.

  • Q1. What are Little Endian and Big Endian in the context of computer architecture?
  • Ans. 

    Little Endian and Big Endian refer to the order in which bytes are stored in computer memory.

    • Little Endian stores the least significant byte first, while Big Endian stores the most significant byte first.

    • Little Endian is commonly used in x86 architecture, while Big Endian is used in architectures like SPARC and PowerPC.

    • Endianness can affect data transmission between systems with different byte orders.

  • Answered by AI
  • Q2. Write a program to determine if your system is little-endian or big-endian.
  • Ans. 

    Program to determine system's endianness

    • Check the endianness by storing a multi-byte integer and checking the byte order

    • Use bitwise operations to extract the least significant byte

    • If the least significant byte is at the lowest memory address, it's little-endian

    • If the least significant byte is at the highest memory address, it's big-endian

  • Answered by AI
  • Q3. What is the volatile keyword in programming?
  • Ans. 

    The volatile keyword in programming is used to indicate that a variable's value can be changed unexpectedly.

    • Volatile keyword is used in multithreaded programming to prevent compiler optimizations on variables that can be changed by other threads.

    • It tells the compiler not to cache the variable's value in a register, ensuring that every access is made to the variable's memory location.

    • Commonly used in embedded systems pr...

  • Answered by AI
  • Q4. What is the use of a function pointer in C?
  • Ans. 

    Function pointers in C are used to store the address of functions, allowing for dynamic function calls and callbacks.

    • Function pointers can be used to implement callbacks in event-driven programming.

    • They can be used to switch between different functions at runtime.

    • Function pointers are commonly used in implementing data structures like function pointers in an array of function pointers.

    • Example: void (*funcPtr)(int) = &a

  • Answered by AI
  • Q5. Design a data structure to implement multi-threading.
  • Ans. 

    Design a data structure for multi-threading

    • Use a thread-safe queue to manage tasks for each thread

    • Implement a lock or semaphore to control access to shared resources

    • Consider using condition variables for synchronization

    • Use atomic operations for shared variables to prevent race conditions

  • Answered by AI
  • Q6. What does a kernel do?
  • Ans. 

    The kernel is the core component of an operating system that manages system resources and provides a bridge between software and hardware.

    • Manages system resources such as CPU, memory, and I/O devices

    • Provides a bridge between software applications and hardware components

    • Handles tasks such as process scheduling, memory management, and device drivers

    • Controls communication between hardware and software layers

  • Answered by AI
  • Q7. What is a storage class in programming?
  • Ans. 

    A storage class in programming defines the scope and lifetime of variables.

    • Storage classes include auto, register, static, and extern.

    • Auto variables are created when a function is called and destroyed when the function ends.

    • Register variables are stored in CPU registers for faster access.

    • Static variables retain their value between function calls.

    • Extern variables are declared outside of any function and can be accessed

  • Answered by AI
Round 2 - HR 

Round duration - 30 minutes
Round difficulty - Easy

HR round with typical behavioral problems.

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPANVIDIA interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, Operating Systems, Aptitude, OOPSTime required to prepare for the interview - 6 monthsInterview preparation tips for other job seekers

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.

Application resume tips for other job seekers

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.

Final outcome of the interviewSelected

Skills evaluated in this interview

Software Engineer Interview Questions & Answers

Intel user image ESHAN SHEKHAR cs15m018

posted on 2 Dec 2016

I applied via Campus Placement and was interviewed in Dec 2016. There were 5 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Given a blackbox with arithmetic circuits , design the logical circuits
  • Ans. 

    Design logical circuits for arithmetic circuits in a blackbox.

    • Understand the functionality of the arithmetic circuits in the blackbox.

    • Identify the inputs and outputs of the blackbox.

    • Design logical circuits using logic gates to replicate the arithmetic operations.

    • Test the logical circuits to ensure they produce the same outputs as the arithmetic circuits.

  • Answered by AI
  • Q2. Embedded c-code for recursion
  • Ans. 

    Recursion in embedded C-code allows a function to call itself, useful for repetitive tasks or complex algorithms.

    • Ensure proper base case to avoid infinite recursion

    • Use stack space efficiently as embedded systems have limited resources

    • Avoid recursive functions with deep call stacks to prevent stack overflow

    • Example: Recursive function to calculate factorial of a number

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: During this round we had some technical questions and some digital logic questions.
Tips: Please be patient.Interviewers do stress testing. Don't panic even if you don't know any answers.
Duration: 2 hours
Total Questions: 1

Round: Technical Interview
Experience: He asked me questions regarding my project and some coding questions
Tips: Please be patient.Interviewers do stress testing. Don't panic even if you don't know any answers.

Round: Technical + HR Interview
Experience: He asked me questions regarding my project and some coding questions
Tips: Please be patient.Interviewers do stress testing. Don't panic even if you don't know any answers.

College Name: IIT Madras

Skills evaluated in this interview

Software Engineer Interview Questions & Answers

Intel user image Niranjhana Narayanan

posted on 2 Dec 2016

I applied via Campus Placement and was interviewed in Dec 2016. There were 4 interview rounds.

Interview Preparation Tips

Round: Test
Experience: Questions were based on C concepts, given piece of code, find error, output,etc then data structures, bit manipulation, a few aptitude questions were also there (around 5-7).
Duration: 1 hour
Total Questions: 30

Round: Technical + HR Interview
Experience: I was asked to explain project in detail, I had done projects on embedded, so was asked what fields did you use in that structure, why this implementation and not some related other. Then questions on C concepts, memory allocation, function pointers, data structures, linked lists, then bit manipulation in registers. Then later, why higher studies, would you still go for higher studies if you had a good job at a company, why etc.
Tips: Just be thorough with C (Know your Kernighan Ritchie) and be prepared to go into details about your projects.

College Name: IIT Madras

I applied via Campus Placement and was interviewed in Dec 2016. There were 5 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Tell me about your self
  • Ans. 

    I am a passionate software engineer with experience in developing web applications using various technologies.

    • Experienced in developing web applications using HTML, CSS, JavaScript, and frameworks like React and Angular

    • Proficient in backend development with Node.js and databases like MongoDB and MySQL

    • Familiar with version control systems like Git and project management tools like Jira

  • Answered by AI
  • Q2. Questions on gen data structures and basic electrical questions Regards software - Dsa,computer organization,computer networks

Interview Preparation Tips

Round: Test
Experience: I was gen basic analytics questions
Tips: No needforany serious preperation,just be yourself
Duration: 45 minutes
Total Questions: 25

Round: Technical + HR Interview
Experience: I got trough most of dsa and computer network questions but i was notso strong in digital part so i cupped
Tips: Just know the basics of all the areas you are interested in.

Round: HR Interview
Experience: This is the basic question expected i have gone through my family childhood experiences and hobies
Tips: Every person have a unique style of expressing themselves ,so prepare for these kind of questions,dont rise any interest in higher studies

College Name: IIT Madras

Qualcomm Interview FAQs

How many rounds are there in Qualcomm L2 Engineer interview?
Qualcomm interview process usually has 1 rounds. The most common rounds in the Qualcomm interview process are Technical.
What are the top questions asked in Qualcomm L2 Engineer interview?

Some of the top questions asked at the Qualcomm L2 Engineer interview -

  1. Why current flow direction is opposite to the electron f...read more
  2. What is leakage current in c...read more
  3. What are the differnet mosfet termin...read more

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Qualcomm L2 Engineer Interview Process

based on 1 interview

Interview experience

2
  
Poor
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Qualcomm L2 Engineer Salary
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₹7.5 L/yr - ₹17.5 L/yr
30% more than the average L2 Engineer Salary in India
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2.5/5

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3.2

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