VLSI Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

VLSI Interview Questions

Questions Answers Views Company eMail

Explain the difference between write through and write back cache.

Intel,

2 16480

Are you familiar with the term MESI?

Intel,

2651

Are you familiar with the term snooping?

Intel,

3445

Describe a finite state machine that will detect three consecutive coin tosses (of one coin) that results in heads.

Intel, Sun Microsystems,

2795

In what cases do you need to double clock a signal before presenting it to a synchronous state machine?

Intel,

1 5423

You have a driver that drives a long signal & connects to an input device. At the input device there is either overshoot, undershoot or signal threshold violations, what can be done to correct this problem?

Intel,

2632

Are you familiar with VHDL and/or Verilog?

Intel,

1 4358

What types of CMOS memories have you designed? What were their size? Speed?

e-tec, Intel,

3102

What work have you done on full chip Clock and Power distribution? What process technology and budgets were used?

Intel,

2845

What types of I/O have you designed? What were their size? Speed? Configuration? Voltage requirements?

Intel,

2398

Process technology? What package was used and how did you model the package/system? What parasitic effects were considered?

Intel,

2286

What types of high speed CMOS circuits have you designed?

Intel,

2525

What transistor level design tools are you proficient with? What types of designs were they used on?

Intel,

3395

What products have you designed which have entered high volume production?

Intel,

2402

What was your role in the silicon evaluation or product ramp? What tools did you use?

Intel,

2268

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Un-Answered Questions { VLSI }

What are the different design constraints occur in the synthesis phase?

1070

What is the ideal input and output resistance of a current source?

2962

what is verilog?

1071

Why does the present vlsi circuits use mosfets instead of bjts?

1235

In vlsi chip 1000s of transistors are dropped, specifically categorized. Which method is used to achieve this & how it is done practically?

979

Explain the three regions of operation of a mosfet.

1044

Basic Stuff related to Perl?

2784

What work have you done on full chip Clock and Power distribution? What process technology and budgets were used?

3221

Explain the Various steps in Synthesis?

3230

How do you size NMOS and PMOS transistors to increase the threshold voltage?

2980

Differences between Array and Booth Multipliers?

4021

Explain the Charge Sharing problem while sampling data from a Bus?

4668

What are the different classification of the timing control?

1059

Let A & B be two inputs of the NAND gate. Say signal A arrives at the NAND gate later than signal B. To optimize delay, of the two series NMOS inputs A & B, which one would you place near the output?

1409

What types of high speed CMOS circuits have you designed?

2525

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