Staff Hardware Engineer Interview Questions | Glassdoor

# Staff Hardware Engineer Interview Questions

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Staff hardware engineer interview questions shared by candidates

## Top Interview Questions

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### Staff Hardware Engineer at Qualcomm was asked...

May 2, 2013
 If you have a 600 digit number with only 0's and 1's, and exactly 300 1's, can the number be a square?6 AnswersNoI am trying to undersatnd why you say the answer is No. for a 6 bit binary number, of which 3 bits are exactly 1s. 25 and 49 are possible such numbers that happens to be a square... Why can't this possibility extend to a 600 bit binary number?The answer should be YES: @gustion: your example with 49 (7 pwr2) is correct but with 25 (5 pwr2) is incorrect. 7 in binary is 111 (3 1-bits is half of 6 bits), but 5 in binary is 101 (2 1-bits does not equal half of 6 bits). In general, any binary number with n-bits, half of which are 0's and half are 1's is a square of a binary number with half the number of bits, all being 1-value bits. In addition, the number's magnitude will be n/2-1 1-bits followed by n/2 0-bits followed by the last 1-bit. For example, lets say we have a 16-bit number. The number which will have 8 1-bit and 8 0-bit binary digits and also be a square is: 1111 1110 0000 0001 (7 1-bits followed by 8 0-bits followed by 1-bit) and this number is a square of 1111 1111 Binary number with 600 bits and 300 1-bits will have a magnitude of 299 1-bits followed by 300 0-bits followed by 1-bit, and it will be a square of a 300-bit number with the magnitude of 300 1-bits.Show More ResponsesWell on a simple note, 9's binary is 1001, a 4 digit binary with two 1's and two 0's, and is a perfect square. The same analogy should also be true for any such number.can someone explain why this pattern works?Because (2^n - 1)^2 = 2^(2n) - 2 * (2^n) + 1 = 2^(2n) - 2^(n + 1) + 2^0. Such that bit n + 1 to 2n -1 will be 1, bit n to 1 will be 0, and bit 0 will be 1, which makes it n bits of 1 & n bits of 0. You can test 15^2 = 225 to understand it.

### Staff Hardware Engineer at Qualcomm was asked...

Jul 31, 2009
 Please discuss the differences between USB 2.0 and USB 3.01 AnswerExpectation was to go through analog specs as well as system-level description (signaling, packets, etc).

Jul 13, 2012
 Where do you see yourself in 5 years? Its a tough question to answer especially if you're changing roles to some degree entering a new company. Its hard to know the culture and how you'll fit in. Whether you will want to pursue a managerial role or individual contributor. How you will want to expand your skill set and advance. 1 AnswerAnswer is really up to individual and how they are familiar with the role they are envisioning.

### Staff Hardware Engineer at Qualcomm was asked...

Mar 27, 2013
 What comes to mind when you think of Qualcomm first?1 AnswerThought but not stated law suit loss to Broadcom.

### Staff Hardware Engineer at IBM was asked...

Aug 28, 2015
 Describe customer service experience.Be the first to answer this question

### Staff Hardware Engineer at IBM was asked...

Aug 28, 2015
 Are you open to learning?1 AnswerYes. Very much.

### Staff Hardware Engineer at PlayStation was asked...

Mar 7, 2014
 I was asked several technical questions that I didn't quite understand. They were related to analog electrical signalling, semiconductor physics and very deep-level input conditioning.Be the first to answer this question

### Staff Hardware Engineer at PlayStation was asked...

Jan 2, 2017
 How would I design a video display system.1 AnswerDrew a block diagram on white board. Described video processing pipeline including bandwidth requirements

### Senior Staff Hardware Engineer at Juniper Networks was asked...

Jul 1, 2019
 What kind of obstacles did you encounter at your work place, and how did you resolve it?Be the first to answer this question

Sep 27, 2015