Validation Consultant Interview Questions

2,442 validation consultant interview questions shared by candidates

Explain I2C and SPI interface? How do you debug an I2C interface? Explain a project you have done on Signal Integrity and Power Integrity? Have you used a Power Analyzer? What is a load transient and line transient? Why do you see a drop in output voltage in load transient event? How would you debug if output voltage of a PMIC is lower than expected?
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Hardware Validation Engineer (Contract)

Interviewed at Apple

4.1
Jan 23, 2021

Explain I2C and SPI interface? How do you debug an I2C interface? Explain a project you have done on Signal Integrity and Power Integrity? Have you used a Power Analyzer? What is a load transient and line transient? Why do you see a drop in output voltage in load transient event? How would you debug if output voltage of a PMIC is lower than expected?

Questions on TLB, Caches, Virtual Memory ,OOO pipelines. Advantages of inclusive and NINE caches. Difference between const int *ptr and int * const ptr. Bit manipulation questions - set nth bit, replace a 16th to 13th bits by some other number. Find if the given number is a power of 2. Different types of locks. How is atomicity implemented? (LLSC). Cache Coherence. Why is dirty sharing done? Questions on BIOS.
avatar

Post Silicon Validation

Interviewed at Apple

4.1
Jun 7, 2018

Questions on TLB, Caches, Virtual Memory ,OOO pipelines. Advantages of inclusive and NINE caches. Difference between const int *ptr and int * const ptr. Bit manipulation questions - set nth bit, replace a 16th to 13th bits by some other number. Find if the given number is a power of 2. Different types of locks. How is atomicity implemented? (LLSC). Cache Coherence. Why is dirty sharing done? Questions on BIOS.

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