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Qualcomm Interview Questions and Answers
286 Interview questions
Backward compatibility can be supported by using versioning, deprecation strategies, and maintaining clear communication with users.
Use versioning to clearly distinguish between different versions of the system
Implement deprecation strategies to phase out old features gradually
Maintain clear communication with users about upcoming changes and provide migration paths
Consider using compatibility layers or adapters t...
Non-blocking allows multiple tasks to run concurrently, while blocking stops the current task until a certain condition is met.
Non-blocking allows tasks to run concurrently without waiting for each other to finish.
Blocking stops the current task until a certain condition is met, potentially causing delays in execution.
Non-blocking is commonly used in asynchronous programming, while blocking is more traditional and...
The question involves solving a data structure and algorithm problem, typically focusing on arrays or linked lists.
Understand the problem statement clearly before coding.
Identify the data structures that can be used (e.g., arrays, linked lists).
Consider edge cases, such as empty arrays or single-element arrays.
Optimize your solution for time and space complexity.
Test your solution with various inputs to ensure cor...
Construct a tree from pre and post order traversal arrays.
Start by creating a root node using the first element of the pre-order array.
Find the index of the root node in the post-order array to divide it into left and right subtrees.
Recursively build the left and right subtrees.
Repeat the process for each subtree until the tree is fully constructed.
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A cycle in a linked list occurs when a node points to a previous node in the list, creating a loop.
Check for a cycle using two pointers - one moving one node at a time and the other moving two nodes at a time.
If the two pointers meet at any point, there is a cycle in the linked list.
Example: 1 -> 2 -> 3 -> 4 -> 2 (points back to 2), this linked list has a cycle.
To swap two numbers, store one number in a temporary variable, assign the value of the second number to the first, and then assign the temporary variable to the second number.
Create a temporary variable to store one of the numbers
Assign the value of the second number to the first number
Assign the value of the temporary variable to the second number
Find the longest consecutive subsequence in an array of strings.
Sort the array of strings to ensure consecutive elements are next to each other
Iterate through the sorted array to find the longest consecutive subsequence
Track the current consecutive subsequence length and update the longest length found
Use a 4:1 mux to create a 3 input XOR gate.
Connect two of the inputs to the select lines of the mux.
Connect the third input to one of the data inputs of the mux.
Connect the other data input of the mux to the output of an XOR gate between the first two inputs.
Use the output of the mux as the output of the 3 input XOR gate.
Variance of sum of two iid random variables is the sum of their individual variances.
Variance of sum of two iid random variables is the sum of their individual variances
If X and Y are iid random variables, Var(X+Y) = Var(X) + Var(Y)
For example, if X and Y are both dice rolls, Var(X+Y) = Var(X) + Var(Y) = 35/12
Find the next greater element for each element in an array.
Use a stack to keep track of elements without a next greater element.
Iterate through the array and compare elements with the top of the stack.
Update the stack with the current element if it is greater than the top element.
Qualcomm Interview Experiences
271 interviews found
Anonymous
I appeared for an interview in Dec 2024.
(2 Questions)
- Q1. What can you share about your experience?
- Ans.
I have over 5 years of experience as a Business Analyst in the finance industry.
Led cross-functional teams to analyze market trends and develop strategic plans
Performed data analysis to identify opportunities for cost reduction and revenue growth
Collaborated with stakeholders to gather requirements and create detailed business requirements documents
- Q2. What are the specific responsibilities associated with the role, and how does the workflow typically function?
- Ans.
Business Analyst responsibilities include analyzing data, identifying trends, and making recommendations to improve business processes.
Gather and analyze data to identify trends and make recommendations
Work closely with stakeholders to understand business needs and requirements
Create reports and presentations to communicate findings and recommendations
Collaborate with cross-functional teams to implement solutions
Monito...
(1 Question)
- Q1. It was little technical with the Excel and Power Bi
yogesh sindam
I appeared for an interview in Dec 2024.
(3 Questions)
- Q1. Mostly related to docker networking concept.
- Q2. How linux boot process work?
- Ans.
Linux boot process involves several stages including BIOS, bootloader, kernel initialization, and user space initialization.
BIOS (Basic Input/Output System) performs hardware initialization and loads bootloader
Bootloader (GRUB, LILO) loads the Linux kernel into memory and starts it
Kernel initializes devices, mounts the root filesystem, and starts the init process
Init process (systemd, SysVinit) starts user space proces...
- Q3. Git, merge abd rebase cherry-pick etc
Interview Preparation Tips
i was interviewed for devops roles
(2 Questions)
- Q1. What is Planning?
- Ans.
Planning is the process of setting goals, determining actions to achieve those goals, and allocating resources effectively.
Setting specific, measurable, achievable, relevant, and time-bound (SMART) goals
Creating a detailed plan of action to achieve the goals
Allocating resources such as time, money, and manpower efficiently
Monitoring progress and making adjustments as needed
Examples: Financial planning for a company's b...
- Q2. What to build financial model?
- Ans.
A financial model is built to forecast future financial performance of a company or project.
Identify the purpose of the financial model (e.g. budgeting, valuation, forecasting)
Gather historical financial data and relevant assumptions
Create income statement, balance sheet, and cash flow statement projections
Perform sensitivity analysis to assess the impact of different variables
Validate the model by comparing actual res...
(2 Questions)
- Q1. What is depreciation?
- Ans.
Depreciation is the allocation of the cost of a tangible asset over its useful life.
Depreciation is a non-cash expense that reduces the value of an asset over time.
It reflects the wear and tear, obsolescence, or decrease in value of an asset.
Common methods of calculating depreciation include straight-line, double declining balance, and units of production.
Example: A company purchases a machine for $10,000 with a useful...
- Q2. What is the concept of budgeting?
- Ans.
Budgeting is the process of creating a plan to manage income and expenses over a specific period of time.
Budgeting involves setting financial goals and creating a detailed plan to achieve them.
It helps in tracking income, expenses, and savings to ensure financial stability.
Budgeting can be done on a personal level, for businesses, or for specific projects.
Examples of budgeting tools include spreadsheets, budgeting apps...
I appeared for an interview in Sep 2024.
(1 Question)
- Q1. Project experience, admin questions, scenario based questions in admin, apex and in general tech questions Tableau, excel etc
(1 Question)
- Q1. Overall project experience and cross questioning on my candidature
(1 Question)
- Q1. Integration with Salesforce questions
(1 Question)
- Q1. Reports and dashboards, sprint management questions
(1 Question)
- Q1. Apex and Salesforce admin questions
Interview Preparation Tips
(2 Questions)
- Q1. Technical interview questions
- Q2. Questions technical interview questions
(2 Questions)
- Q1. One on round questions
- Q2. Questiobs one on round
Interview Preparation Tips
I applied via Approached by Company and was interviewed in Oct 2024. There were 3 interview rounds.
Aptitude and technical questions were asked
(2 Questions)
- Q1. Pattern question
- Q2. Doubly linked list insertion
(2 Questions)
- Q1. C++ linked lists
- Q2. Resume based, projects were asked.
Selected
(2 Questions)
- Q1. Bitwise questions easy to medium
- Q2. Merge two sorter linked list
- Ans.
Merge two sorted linked lists into a single sorted linked list
Create a new linked list to store the merged result
Iterate through both input linked lists and compare nodes to determine the order in which they should be merged
Update the next pointers of the nodes in the new linked list accordingly
(2 Questions)
- Q1. Inter process communication theory
- Q2. Reverse words in String
- Ans.
Reverse words in a given string
Split the string into words using a space as delimiter
Reverse each word individually
Join the reversed words back together with a space in between
(4 Questions)
- Q1. Linux Module development
- Q2. Dynamic 2d array multiplication
- Ans.
Dynamic 2D array multiplication involves multiplying two matrices of varying sizes using dynamic memory allocation.
Define two 2D arrays (matrices) dynamically using pointers.
Ensure the number of columns in the first matrix equals the number of rows in the second.
Allocate memory for the result matrix based on the dimensions of the input matrices.
Use nested loops to perform the multiplication: for each element in the res...
- Q3. Why this role ?
- Ans.
I am passionate about solving complex engineering problems and contributing to innovative projects.
I have always been fascinated by the intersection of technology and creativity
I thrive in fast-paced environments where I can apply my technical skills
I am excited about the opportunity to work with a talented team and make a real impact
- Q4. Why linux kernel ? And About how to compile linux kernel?
- Ans.
Linux kernel is popular for its open-source nature, stability, security, and flexibility. Compiling it allows customization and optimization.
Linux kernel is widely used due to its open-source nature, allowing for customization and collaboration.
It is known for its stability, security, and flexibility, making it a preferred choice for many developers and organizations.
Compiling the Linux kernel involves configuring the ...
Interview Preparation Tips
Prep Embedded Linux.
Prep Bitwise and Linked list Problems. (easy to medium)
Prep Array and String w.r.t to dynamic memory allocation.
Prep Pointer Arithmetic.
Skills evaluated in this interview
I applied via Company Website
(1 Question)
- Q1. Give an example of a customer dispute in making payment
- Ans.
A customer disputed a payment due to incorrect billing for services rendered, leading to a resolution process.
Customer received an invoice for $1,000 but only expected to pay $800 based on prior agreement.
Dispute arose when the customer claimed they were charged for services not rendered.
Communication breakdown occurred; the customer felt their concerns were not addressed promptly.
Resolution involved reviewing service ...
Ravinder Kumar
(2 Questions)
- Q1. Invert bits of a number
- Ans.
Invert the bits of a given number
Use bitwise XOR operator (^) with 1 to flip each bit
Repeat the process for all bits in the number
Return the inverted number
- Q2. How do you support backward compatibility whiel designing a system
- Ans.
Backward compatibility can be supported by using versioning, deprecation strategies, and maintaining clear communication with users.
Use versioning to clearly distinguish between different versions of the system
Implement deprecation strategies to phase out old features gradually
Maintain clear communication with users about upcoming changes and provide migration paths
Consider using compatibility layers or adapters to bri...
Skills evaluated in this interview
I applied via Campus Placement and was interviewed in Jul 2024. There were 3 interview rounds.
It consisted of aptitude questions, then OS C 1mrks, which were re GATE questions. No coding, I chose hardware role, so questions were from digital electronics too. prepare the gate questions for these subjects
(2 Questions)
- Q1. Question were from vlsi and SOC design
- Q2. Then questions on optimizations in vlsi were asked.
(2 Questions)
- Q1. Family and background check
- Q2. Resume and projects
Interview Preparation Tips
Qualcomm Interview FAQs
Some of the top questions asked at the Qualcomm interview -
The duration of Qualcomm interview process can vary, but typically it takes about less than 2 weeks to complete.
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