Qualcomm Interview Questions

Excerpts from Interview #1:

• What is “I” in ACID properties?
• Describe a few deadlock avoidance schemes.
• What do you understand by clustering index?

• Implement the malloc() and free() operations. Describe only the strategy for doing so, not the code.
• A window of size k is sliding from left to right in an array of size n. Find out the maximum number in the window at each window position.
• Describe your final year project in detail. How would you describe your role in the same?

• How has your interview experience so far?
• What are you weaknesses which you would like to work upon?
• Do you wish to change your domain? If yes, why?
• Describe a situation wherein you were asked to do something you didn’t like? How did you handle it?

Excerpts from Interview #2:

• There is a program which inserts and deletes node in a sorted singly linked list. There is a bug in one of the modules. Give us a method of debugging it.
• What are the various techniques by which fault tolerance can be ensured in systems? (Different redundancy techniques)
• Tell me the difference between stack and heap memory.
• A pair of redundant systems is operating. Give us a method of ensuring that when one of them goes down, the other one will take over its operation.
• Describe the virtual function in C++.

• Introduce yourself.
• Why do you want to join Qualcomm?
• Has there ever been a situation wherein you weren’t able to complete your task in time and therefore had to take a quick decision to manage the situation?
• What extra-curricular activities are you involved in?

Excerpts from Interview #3:

• Suppose a 4-inch cube is painted on all the sides. If this piece is cut into smaller cubes of side 1 inch each, how many cubes will be left unpainted at all?
• Suppose that two of the nodes of a Binary Search Tree (BST) are interchanged. Give us a method to fix(or correct) this BST.
• Questions based on function pointers and its usage.
• Devise a program to check whether a binary tree is BST or not.
• Devise an algorithm to check if there is a loop in a doubly linked list.

• Tell me yourself.
• Tell me about your family background.
• What do you know about our competitors?
• What do you expect from our organization?
• Will you be comfortable in relocating?

Excerpts from Interview #4:

• A few choices were given. The question asked to pick out the Super Key from the lot.
• Considering GRANT is used to grant privileges to perform the queries specify the command which is used to remove these permissions?
• Write a program to delete a node, given only a pointer to the node in a Circular linked list.
• Write a program to return a stream of bytes from a function.
• Questions on Call back functions.
• Write a code to reverse a single linked list.

• Would you be interested in changing your domain? If yes, why?
• Tell me about your family.
• Why did you sit for the interviews for this company?
• Describe a situation wherein you were asked to do something you didn’t like? How did you handle it?

Excerpts from Interview #5:

• What do you understand by the term cloud computing?
• Describe some salient features of the cloud?
• Write a program to implement memcpy () on your own.
• Describe the difference between a Public and Private cloud.
• How would you define HADOOP? Describe the underlying principle of HADOOP and illustrate some of its features like Map Reduce?

• You have been through the pre-placement talk. Tell us a few negatives about the presentation and how can we improve next time onwards.
• How to you define your goals in life? Do you make plans and strategies for the future or grab opportunities as they come?
• Tell me one thing you hate the most.
• At Qualcomm you might have to do multiple tasks- Attend meetings related to your work as well as complete work for your client. How will you cope up with the same?

Excerpts from Interview #6:

• Differentiate between primary and foreign key.
• Describe macros in Excel. Explain how they are used.
• Explain your summer training project.
• What do you understand by an empty class? What is the functionality which it offers in Java?

• Describe yourself in 3 words.
• Why should we hire you over other candidates?
• What have been your highs and lows in the 4 years of college life?
• We have undergoing projects all over India. Will it be feasible for you as an employee if your job profile requires regular travelling or relocation to a place away from your current city?
• Logical or Choice Based Questions: You have a cake. Describe a method to divide it into 8 pieces using only 3 lines?