Qualcomm Interview Questions, Process, and Tips

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Q1. About basic C program
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Q2. Memory layout ,c and c+=
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Q1. What will variance of sum of two iid random variables
Ans. 
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
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Q2. Different type of fading channels in wireless system
Ans. 
Different types of fading channels in wireless systems include Rayleigh fading, Rician fading, and Nakagami fading.
• Rayleigh fading is when there is no line of sight between transmitter and receiver, resulting in random amplitude and phase variations.

• Rician fading is a combination of a dominant line of sight signal and scattered signals, leading to a stronger signal with fading effects.

• Nakagami fading models the wireles...read more
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Q1. Os , dbms, coding qs
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Q1. C,c++,c os questions
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Q1. Project, coding qs
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30 mins 2 easy leetcode questions

Q1. Swap two numbers
Ans. 
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
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Q2. Longest cinsecutive subsequence
Ans. 
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
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1.5 Hour - 45 que