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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of the following is also known as boundary scan?(a) test pattern(b) JTAG(c) FSM(d) CRCThis question was addressed to me in an internship interview.Question is taken from Testing in portion Validation of Embedded Systems

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The correct CHOICE is (B) JTAG

The explanation: The JTAG is a technique for connecting scan chains of SEVERAL chips and is ALSO known as boundary scan.

2.

Which gate is used in the geometrical representation, if a single event causes hazards?(a) AND(b) NOT(c) NAND(d) ORI have been asked this question by my college director while I was bunking the class.Question is taken from Risk and Dependability Analysis in portion Validation of Embedded Systems

Answer» RIGHT choice is (d) OR

Easiest explanation: The fault tree analysis is done graphically by using gates mainly AND gates and OR gates. The OR gate is used to represent the SINGLE event which is hazardous. SIMILARLY, AND gates are used in the graphical representation if several events cause HAZARDS.
3.

What is CTL?(a) computational tree logic(b) code tree logic(c) cpu tree logic(d) computer tree logicThe question was posed to me during an interview.I'm obligated to ask this question of Formal Verification in division Validation of Embedded Systems

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Right CHOICE is (a) computational tree logic

To explain I would say: The EMC-system is a popular system for MODEL checking which is developed by Clark that describes the CTL formulas, which is also known as computational tree LOGICS. The CTL consist of two PARTS, a path quantifier, and a state quantifier.

4.

What is FTA?(a) free tree analysis(b) fault tree analysis(c) fault top analysis(d) free top analysisI have been asked this question by my school teacher while I was bunking the class.I want to ask this question from Risk and Dependability Analysis in section Validation of Embedded Systems

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Right choice is (b) fault TREE analysis

For explanation: The FTA is also KNOWN as the Fault tree analysis which is a top-down method of analyzing RISKS. The analysis starts with damage and COMES up with the reasons for the damage. The analysis can be checked graphically by using GATES.

5.

Which is a top-down method of analyzing risks?(a) FTA(b) FMEA(c) Hazards(d) DamagesThis question was addressed to me during an internship interview.Origin of the question is Risk and Dependability Analysis topic in division Validation of Embedded Systems

Answer» RIGHT answer is (a) FTA

The explanation is: The FTA is Fault tree ANALYSIS which is a top-down method of ANALYZING risks. It starts with damage and comes up with the reasons for the damage. The analysis is done graphically by using gates.
6.

What does BILBO stand for?(a) built-in logic block observer(b) bounded input bounded output(c) built-in loading block observer(d) built-in local block observerThe question was asked in an internship interview.My question is from Testing in portion Validation of Embedded Systems

Answer» CORRECT option is (a) built-in logic block observer

To elaborate: The BILBO or the built-in logic block observer is proposed as a circuit COMBINING, test response COMPACTION, test PATTERN generation, and serial input/output capabilities.
7.

Which of the following is based on fault models?(a) alpha-numeric pattern(b) test pattern(c) bit pattern(d) parity patternThis question was posed to me in an interview for internship.I'd like to ask this question from Testing in section Validation of Embedded Systems

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The correct choice is (B) test PATTERN

Easiest explanation: The test pattern GENERATION is normally based on the fault models and this model is also known as the stuck-at model. The test pattern is based on a certain assumption, that is why it is CALLED the stuck-at model.

8.

What is FMEA?(a) fast mode and effect analysis(b) front mode and effect analysis(c) false mode and effect analysis(d) failure mode and effect analysisI had been asked this question during an internship interview.The above asked question is from Risk and Dependability Analysis in chapter Validation of Embedded Systems

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The CORRECT choice is (d) failure mode and EFFECT analysis

To explain I WOULD SAY: The FMEA is the failure mode and the effect analysis, in which the analysis STARTS at the components and tries to estimate their reliability.

9.

Which gate is used in the graphical representation, if several events cause hazard?(a) OR(b) NOT(c) AND(d) NANDThis question was addressed to me during an online exam.I'd like to ask this question from Risk and Dependability Analysis in chapter Validation of Embedded Systems

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The correct CHOICE is (c) AND

Explanation: The fault tree analysis is DONE graphically by using gates. The MAIN gates used are AND gates and OR gates. The AND gates are used in the graphical representation if several events CAUSE hazards.

10.

Which model is capable of reflecting the bidirectional transfer of information?(a) switch-level model(b) gate level(c) layout model(d) circuit-level modelThis question was posed to me in a national level competition.I want to ask this question from Risk and Dependability Analysis topic in section Validation of Embedded Systems

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Right CHOICE is (a) switch-level MODEL

The BEST I can explain: The switch model can be used in the simulation of the transistors since the transistor is the very basic component in a switch. It is capable of REFLECTING bidirectional transferring of the information.

11.

What is FSM?(a) Fourier state machine(b) finite state machine(c) fast state machine(d) free state machineThe question was asked in an interview for internship.This intriguing question comes from Testing topic in chapter Validation of Embedded Systems

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The correct option is (B) finite state machine

Explanation: The FSM is the finite state machine. It will be having a finite NUMBER of states and is used to design both the sequential logic circuit and the computer PROGRAMS. It can be used for TESTING the scan design in the testing techniques.

12.

Which of the following is also known as equivalence checker?(a) BDD(b) FOL(c) Tautology checker(d) HOLThis question was posed to me in an international level competition.I need to ask this question from Formal Verification in chapter Validation of Embedded Systems

Answer» RIGHT choice is (c) Tautology CHECKER

For explanation I would say: The PROPOSITIONAL logic technique consists of the boolean formulas and the boolean function. The TOOLS used in this type of logic is the tautology checker or the equivalence checker which in TURN uses the BDD or the binary decision diagrams.
13.

Which formal verification technique consists of a Boolean formula?(a) HOL(b) FOL(c) Propositional logic(d) Both HOL and FOLThis question was addressed to me by my college professor while I was bunking the class.This key question is from Formal Verification in section Validation of Embedded Systems

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Right option is (c) Propositional logic

Easy explanation: The propositional logic technique is having the boolean formulas and the boolean function. The TOOLS used in propositional logic is the tautology checker or the equivalence checker which in TURN USES the binary decision diagrams which are ALSO known as BDD.

14.

What is BDD?(a) boolean decision diagram(b) binary decision diagrams(c) binary decision device(d) binary device diagramThe question was posed to me in final exam.I would like to ask this question from Formal Verification in section Validation of Embedded Systems

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The correct choice is (b) binary DECISION diagrams

Easy EXPLANATION: The binary decision DIAGRAM is a kind of data structure which is USED to represent the Boolean function.

15.

What is CRC?(a) code reducing check(b) counter reducing check(c) counting redundancy check(d) cyclic redundancy checkThe question was asked in an online interview.I'm obligated to ask this question of Testing in portion Validation of Embedded Systems

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The CORRECT option is (d) cyclic REDUNDANCY check

For explanation: The CRC or the cyclic redundancy check is the error detecting code which is commonly USED in the storage device and the digital NETWORKS.

16.

What is DfT?(a) discrete Fourier transform(b) discrete for transaction(c) design for testability(d) design Fourier transformI got this question by my college director while I was bunking the class.This question is from Testing topic in chapter Validation of Embedded Systems

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The CORRECT option is (C) DESIGN for testability

Easiest explanation: The design of testability or DfT is the PROCESS of designing for the better testability.

17.

Which is applied to a manufactured system?(a) bit pattern(b) parity pattern(c) test pattern(d) byte patternI had been asked this question by my college professor while I was bunking the class.Enquiry is from Testing in division Validation of Embedded Systems

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Correct option is (c) TEST pattern

For explanation I would say: For testing any devices or embedded systems, we use some SORT of selected inputs which is known as the test pattern and observe the output and is COMPARED with the EXPECTED output. These test patterns are normally applied to the manufactured systems.

18.

Which analysis uses the graphical representation of hazards?(a) Power model(b) FTA(c) FMEA(d) First power modelI had been asked this question in exam.This key question is from Risk and Dependability Analysis topic in division Validation of Embedded Systems

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Correct answer is (B) FTA

To explain I would say: The FTA is DONE graphically by using gates mainly AND gates and OR gates. The OR GATE is used to REPRESENT the single event which is hazardous.

19.

Which of the following is possible to locate errors in the specification of the future bus protocol?(a) EMC(b) HOL(c) BDD(d) FOLI got this question during an interview for a job.This interesting question is from Formal Verification topic in portion Validation of Embedded Systems

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Correct answer is (c) BDD

Best EXPLANATION: The model CHECKING was developed USING the binary decision diagram and the BDD and it was possible to locate ERRORS in the specification of the future bus PROTOCOL.

20.

How is the quality of the test pattern evaluated?(a) fault coverage(b) test pattern(c) size of the test pattern(d) number of errorsThe question was posed to me by my college director while I was bunking the class.The doubt is from Testing topic in portion Validation of Embedded Systems

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Correct ANSWER is (a) fault coverage

The explanation is: The quality of the test pattern can be EVALUATED on the BASIS of the fault coverage. It is the percentage of potential FAULTS that can be found for a given test pattern set, that is fault coverage equals the NUMBER of detectable faults for a given test pattern set divided by the number of faults possible due to the fault model.

21.

What is HOL?(a) higher order logic(b) higher order last(c) highly organised logic(d) higher order lessThe question was asked in an interview for job.This is a very interesting question from Formal Verification topic in portion Validation of Embedded Systems

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The correct answer is (a) higher ORDER LOGIC

Best explanation: The formal verification TECHNIQUES are classified on the basis of the LOGICS employed. The techniques are propositional logic, first order logic, and higher order logic. The HOL is the abbreviation of the higher order logic in which the proofs are automated and MANUALLY done with some proof support.

22.

Which of the following have flip-flops which are connected to form shift registers?(a) scan design(b) test pattern(c) bit pattern(d) CRCThis question was addressed to me in an online interview.Asked question is from Testing in division Validation of Embedded Systems

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The CORRECT answer is (a) scan design

Best EXPLANATION: All the flip-flop storing STATES are connected to FORM a shift REGISTER in the scan design. It is a kind of test path.

23.

Which of the following is a popular system for model checking?(a) HOL(b) FOL(c) BDD(d) EMCThe question was posed to me in examination.My question is from Formal Verification in portion Validation of Embedded Systems

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Right option is (d) EMC

The explanation: The EMC-system is developed by CLARK and it DESCRIBES the CTL formulas, which is the computational TREE logics.

24.

What is meant by FOL?(a) free order logic(b) fast order logic(c) false order logic(d) first order logicThe question was asked in an interview for job.My question is based upon Formal Verification in portion Validation of Embedded Systems

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Right option is (d) first ORDER logic

For EXPLANATION I would SAY: MANY formal verification techniques are USED and these are classified on the basis of the logics employed. The techniques are propositional logic, first order logic, and higher order logic. The FOL is the abbreviated form of the first order logic which includes the quantification.

25.

Which of the following can compute the exact number of clock cycles required to run an application?(a) layout model(b) coarse-grained model(c) fine-grained model(d) register-transaction modelI had been asked this question during an online interview.This intriguing question originated from Risk and Dependability Analysis topic in portion Validation of Embedded Systems

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Correct ANSWER is (C) fine-grained model

To ELABORATE: The fine-grained model has the cycle-true instruction set SIMULATION. In this modelling, it is possible to compute the EXACT number of clock cycles which is required to run an application.

26.

Which is also called stuck-at model?(a) byte pattern(b) parity pattern(c) bit pattern(d) test patternThe question was posed to me in unit test.My question is from Testing topic in section Validation of Embedded Systems

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The correct choice is (d) test PATTERN

The best I can explain: The test pattern generation is basically based on the fault MODELS and this TYPE of MODEL is also known as the stuck-at model. These test patterns are based on a CERTAIN assumption, hence it is known as the stuck-at model.

27.

Which of the following is a set of specially selected input patterns?(a) test pattern(b) debugger pattern(c) bit pattern(d) byte patternI have been asked this question by my school principal while I was bunking the class.Query is from Testing in portion Validation of Embedded Systems

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The correct ANSWER is (a) test pattern

The explanation is: While testing any devices or embedded systems, we APPLY some selected inputs which is known as the test pattern and OBSERVE the output. This output is compared with the expected output. The test patterns are normally APPLIED to the already manufactured systems.