Questions - Digital Design Part#3

Here, are few interview questions asked frequently in the Frontend and Backend interviews -

1) What is DFT ? Explains its importance in a SoC .

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2) What is Controllability and Observability in DFT ?

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3) What are different kind of DFT Methodologies used in Modern SoC Design ?

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4) What is fault coverage ? What do you mean by getting xx% of fault coverage ? What does is signify ?

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5) What is BIST ? Explains differences between LBIST and MBIST ?

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6) Draw a circuit with assuming a fault and find out the test vector to detect that fault (Hint : Your circuit should contain OR/AND/NOT Gates with 5 Literals)

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7) What could be the difference between Testing and Verification of a Design ?

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8) How SCAN Testing is Performed in a IP/SoC ? What do you mean by a Scan Chain ?

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9) Can JTAG Protocols be used for SCAN Testing ? If yes , How?

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10) How will you convert a normal flip-flop to a SCAN flip-flop ? Draw the circuit diagram.

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