Design Verification Engineer Interview Questions

1,114 design verification engineer interview questions shared by candidates

45 mins phone interview: task vs function associative arrays packed vs unpacked scoreboard structures `uvm_do sequencer structure coverage: code vs functional functional cov: module and collector number of automatic bins for an int code coverage metrics uvm_object vs uvm_component concurrent vs immediate assertions 5hrs interview: reg model in uvm adapter and predictor scoreboard structure how to use some of the phases exercise on how to verify a DUT that gets data from 2 sensors list of quick questions on systemverilog how to verify req ack interfaces, also which assertions how to verify in a mixed signal enviroment find errors in given code (like missing "virtual" in parent/child sequences, or missing "automatic" in for loop with fork join_none) optimized way to generate Fibonacci's sequence recursive function to generate a given sequence shortest path algorithm: given starting point and destination point in a 2D matrix, get the shortest path from one to the other, including some non valid coordinates what kind of functional coverage I have done, how I've done scoreboards, some other questions about CV experiences
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Design Verification Engineer

Interviewed at Apple

4.1
Jul 20, 2020

45 mins phone interview: task vs function associative arrays packed vs unpacked scoreboard structures `uvm_do sequencer structure coverage: code vs functional functional cov: module and collector number of automatic bins for an int code coverage metrics uvm_object vs uvm_component concurrent vs immediate assertions 5hrs interview: reg model in uvm adapter and predictor scoreboard structure how to use some of the phases exercise on how to verify a DUT that gets data from 2 sensors list of quick questions on systemverilog how to verify req ack interfaces, also which assertions how to verify in a mixed signal enviroment find errors in given code (like missing "virtual" in parent/child sequences, or missing "automatic" in for loop with fork join_none) optimized way to generate Fibonacci's sequence recursive function to generate a given sequence shortest path algorithm: given starting point and destination point in a 2D matrix, get the shortest path from one to the other, including some non valid coordinates what kind of functional coverage I have done, how I've done scoreboards, some other questions about CV experiences

Q1. FIFO depth, given read and write rates for a burst of x writes Q2. a=0; b=0; c=1; #1 a=c; #1 b =a; (Give waveforms) Q3. a<=0; b<=0; c<=1; #1 a<=c; #1 b< =a; (Give waveforms) Q4. a=0; b=0; c=1; a= #1 c; b=#1 a; (Give waveforms) Q5. a<=0; b<=0; c<=1; a<= #1 c; b<=#1 a; (Give waveforms) Q6. You have incoming bit stream. You can't store them. You get a new bit at every clock edge, find modulo 5 of the updated number everytime. Eg, if bitstream is 10111, you find modulo of 1, then 10, then 101 and so on..
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Verification Design Engineer

Interviewed at Apple

4.1
Oct 11, 2017

Q1. FIFO depth, given read and write rates for a burst of x writes Q2. a=0; b=0; c=1; #1 a=c; #1 b =a; (Give waveforms) Q3. a<=0; b<=0; c<=1; #1 a<=c; #1 b< =a; (Give waveforms) Q4. a=0; b=0; c=1; a= #1 c; b=#1 a; (Give waveforms) Q5. a<=0; b<=0; c<=1; a<= #1 c; b<=#1 a; (Give waveforms) Q6. You have incoming bit stream. You can't store them. You get a new bit at every clock edge, find modulo 5 of the updated number everytime. Eg, if bitstream is 10111, you find modulo of 1, then 10, then 101 and so on..

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