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# Qualcomm  Questions

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Q1 What is Derating factor

Explain derating factor.

Q2 Design a microprocessor

Your group designs a microprocessor for use in cell phones and palmtop computers. You currently fabricate your chips on a 0.25micron process. A new fabrication facility with a 0.13micron process has asked you if you would like to switch to their facility. What do you believe will be the three most important tradeoffs between remaining with the 0.25 micron fabrication process and switching to the 0.13 micron process?

Q3 How to choose between optimization and work completion

The average performance of products in your market segment triples every 36 months. Your design engineers have proposed an optimization that will increase performance by 12%. The optimization will postpone the completion date of the project by 2 months. Should the engineers implement the optimization and postpone the completion date, or should they stick to the original schedule?

Q4

There are three machines with different processing powers. They each take respectively 2, 10 and 20 units of execution time to finish a task requiring X effort. If we let all three machines work on same task, considering each quantum of task is independent of the other, so that not for a moment a machine has to wait for another one to finish, how long will it take for three machines to finish the given task.

Q5 How to find the first 0 in an array containing unknown number of 1s int the beginning.

Given an input array of size unknown with all 1's in the beginning and 0's in the end. Find the index in the array from where 0's start, consider there are millions of 1's and 0's in the array .i.e array is very big e.g array contents 1111111.......1100000.........0000000

Q6 Loop in a linked list

Write code to check if a linked list contains a cycle.

Q7 Check if two linked list merge.

Write code to check if two linked lists merge.

Q8

You have an array of numbers from 1-50 in random order. One element is randomly deleted. Write code to find the missing element.

Q9 Write code for memcpy function.

Write code for memcpy function.

Q10 What does appending static to a global variable/function do?

What does appending static to a global variable/function do?