Qualcomm Interview Questions, Process, and Tips

Q1. MCQs were asked on aptitude and core subjects of computer science
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Q1. Register classes in C, MMU
Ans. 
Register classes in C are used to define new data types. MMU is a hardware component that maps virtual addresses to physical addresses.
• Register classes in C are used to define new data types with specific storage classes.

• MMU stands for Memory Management Unit and is a hardware component that maps virtual addresses to physical addresses.

• The MMU is responsible for managing the translation of virtual addresses to physical ...read more
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Q2. Linked list question, bit manipulation questions.
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Coding MCQ questions, CS fundamentals and aptitude MCQ

Q1. Define workqueues, OS related concepts etc
Ans. 
Workqueues are data structures used in operating systems to manage tasks and prioritize their execution.
• Workqueues are used to schedule and manage tasks in an operating system.

• They help in prioritizing tasks based on their importance and urgency.

• Workqueues are commonly used in kernel programming to handle asynchronous tasks.

• Examples of workqueues include the Linux kernel workqueue and Windows kernel workqueue.
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Q1. Implement search, insert and delete nodes in binary trees.
Ans. 
Implement search, insert, and delete operations in binary trees.
• For search operation, start at the root and recursively search left or right subtree based on the value being searched.

• For insert operation, start at the root and recursively find the correct position to insert the new node.

• For delete operation, find the node to be deleted, handle different cases (no child, one child, two children) accordingly.
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Q1. What are you strength and weaknesses?
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Q1. 3-4 rounds of c and DSP questions.
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Q2. Fourier transform
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Q3. Digital filtering
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Q4. C coding and basics
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DSA, OS, C Language

Q1. Bit Manipulation
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Q2. Linked List, Data Structure
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Q1. Preference, Team Requirements
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Verbal and Non-verbal Reasoning

Q1. What is your family background?
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Q2. Tell me about yourself.
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Q3. Why are you looking for a change?
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Q4. Tell me something about your daily routine
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Q5. How can you manage things if you have more work load than your capacity?
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Q6. What is your favorite subject name any 3
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Based on Electronics, Aptitude and Software

Q1. Explain the working of D flip flop
Ans. 
D flip flop is a digital circuit that stores a single bit of data and is used in sequential logic circuits.
• D flip flop has a data input (D), a clock input (CLK), a set input (S), and a reset input (R).

• When the clock input is high, the value of D is transferred to the output Q.

• When the set input is high, the output Q is set to high.

• When the reset input is high, the output Q is reset to low.

• D flip flop is used in applica...read more
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Q2. Finding factorial using C
Ans. 
Factorial can be found using a loop or recursion in C programming language.
• Use a loop to multiply the numbers from 1 to n to find the factorial of n.

• Use recursion to call the function itself with n-1 until n=1.

• Handle edge cases such as negative numbers and 0.

• Example: int factorial(int n) { if(n<=1) return 1; return n*factorial(n-1); }

• Example: int factorial(int n) { int fact=1; for(int i=1;i<=n;i++) fact*=i; return fact
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Q3. Find duplicates in a string
Ans. 
To find duplicates in a string, we can use a hash table to keep track of the frequency of each character.
• Iterate through the string and add each character to the hash table with its frequency

• If a character already exists in the hash table, it is a duplicate

• Return a list of all the duplicate characters found
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