ISTQB Foundation Level | 4.2.1 Equivalence Partitioning | Black Box Techniques | ISTQB Tutorials 

Neeraj , today I cleared the exam in my first go. I cannot thank you enough for all your efforts 🙏 Without your tutorials and lucid way of explaining , it wouldn't have been easy .

Please make some slight correction here.ctions from ≤16(less than or equal to) to ≥ 16(greater than or equal to 16 based on your explanation

Thanks for the good explanation.

For the last example in this video, Option C vales also belong to the same equivalence classes. Why might that not be correct, please?

Cleared the exam today. This chapter and the techniques are very important, many questions had come from BVA, EP etc.. Big thanks to @TM SQUARE and the tutor. 🙏🏻

Wow, you made it very clear. Giving different examples of the same technique was good. Thanks for sharing your knowledge to the world.

That second example you showed is amazing! Thanks sir, Love your videos.

Hello neeraj sir bit a confused but got solved thanks for the help and this tutor

I would like to thank you sir, Today I cleared my istqb examination. Most of the topics come from your video contents. I am glad that I found your channel. One's again thanks. May God bless you.

Very helpful guide

Thank you so much!

thanks for sharing all good content! Easy to understand and remember.

Thank you so much. you made it so easy and clear.

Hi, please can you assist with an explanation on how to answer question 21 and 22 found in the ISTQB sample paper

Thank you, this is really helpful :)

You are really doing a great job. Can you please answer the below question. You test a password validator. A password is valid if and only if it follows all the below rules: • it contains only letters and digits, • it has at least 6 characters, • it contains at least one digit and at least one capital letter. You have applied the equivalence partitioning and divided the input domain into the following classes: C1 - valid passwords containing only digits and capital letters, C2 - valid passwords other than those in C1, C3 - invalid passwords with incorrect length (too short), C4 - invalid passwords with the correct length, but containing at least one non-letter or non-digit character, C5 - invalid passwords not falling into C3 or C4. Which of the following, comma-separated, sets of test inputs achieves the largest equivalence partitioning coverage? A. ABC123, AB12, A+bc34, abc123 B. ABC, Ab12, aBc123, ABcd1234, Abc++12 C. AB123, abc+123, ABCDEF, 123456 D. A12345, a12345, ABcdef, Ab+12, ab

its very clear explanation for who is try to reach ISTQB

Can we use pen and paper during exam at home or exam center?

This is amazing

I need help, the third example I didn't get it.

Hwllo Neeraj sir. For the employe question even option 3 would also be correct because even it falls under 5501 to to 35000, ehy we are not considering the option 3 as answer

I am preparing for istqb exam, i read the syllabus but it’s not sufficient I understood bva very clearly after watching this video it was very helpful, thanks 🙏🏻

I did not understand the last example, can you please explain? Regards

Can you please explain why option C is not correct?? It's also coming in same class

Thank you very much for your lessons! I really hope they will help me tomorrow in my examination)))).

thank you so much for giving such clearance about these techniques. I wanna ask do you have some other materials for practice as you tell there are 11 questions in this chapter. More practice will be helpful. your kind response will be appreciated

Hi Neeraj, thanks for the amazing video. In general the Eq. Partition it should have one invalid partition right?.. I think it is missed

We can apply BVA 2 points or 3 points after EP for valid range ? It's part of explorty testing but when we design test case what will be considering ?

Thank you Neeraj sir for helpful and clear videos for all the testing topics. I am confused about following questions please explain them 1.All the students who secured more than 50 marks go to Room A, All the students who secured more than 75 go to Room B, All the students who secured less than 50 go to Room C. Identify the equivalence values which belong to the same class a)50, 60, 75 b)25, 50,75 c)49, 60, 76 d)75, 80, 100 2.To make a test effective it is most important that Answer Provided: It is designed to detect faults if present Correct Answer: The expected outcome is specified before execution

A developer was asked to implement the following business rule: INPUT: value (integer number) IF (value ≤ 100 OR value ≥ 200) THEN write “value incorrect” ELSE write “value OK” You design the test cases using 2-value boundary value analysis. Which of the following sets of test inputs achieves the greatest coverage? a) 100, 150, 200, 201 b) 99, 100, 200, 201 c) 98, 99, 100, 101 d) 101, 150, 199, 200 Select ONE option. Will you tell me how to do equivalence partitioning where = is involved?

Hi Neeraj, Can u please tell me the anser for the below question with proper Justification. Which of the following is a valid collection of equivalence classes for the following problem? Paying with credit cards shall be possible with Visa, Master and Amex cards only. A. Visa, Master, Amex; B. Visa, Master, Amex, Diners, Keycards, and other option C. Visa, Master, Amex, any other card, no card D. No card, other cards, any of Visa - Master - Amex

Hi Neeraj, I’m slightly confused with the last question. That D was the right answer. Would you be able to explain further for me please?

I don’t understand 1 example how you calculate the things and I also don’t understand last one because as my point of view all are correct options..

Hi Neeraj Thankyou for explaining so properly. I have a question for equivalence partitioning from the book FOUNDATIONS OF SOFTWARE TESTING By DOROTHY GRAHAM

Hi sir, thanks you explained ep nicely. I have one question if you could explain it If a candidate is giving an exam of 40 questions, should get 25 marks to pass(61 percentage) and should get 80 percentage for distinction, what is equivalence class A. 23, 24, 25 B. 0, 12, 25 C. 30, 36,39 D. 32, 37,40 Answer is d

hello sir i have one question can u help me out with that. a video application has the following requirement: the application shall allow playing a video on the foloowing display sizes: 1. 640*480 2.1280*720 3. 1600*1200 4. 1920*1080 which of the following test cases is result of of applying the euivalence partitioning test teschnique to test this requirement? 1.verify that the appln can play a video on display size 1920*1080( 1test) 2. verify that the appln can play a video on each of the display sizes in requirement ( 4test) 3. verify that the appln can play a video on display size 640*480 & 1920*1080 ( 2test) 4. verify that the appln can play a video on any one of the display sizes in the requiremnet( 1test)

Hi sir, can you explain the partitions of below question You are testing a simplified apartment search form which has only two search criteria: • floor (with three possible options: ground floor; first floor; second or higher floor) • garden type (with three possible options: no garden; small garden; large garden) Only apartments on the ground floor may have gardens. The form has a built-in validation mechanism that will not allow you to use the search criteria which violate this rule. Each test has two input values: floor and garden type. You want to apply equivalence partitioning (EP) to cover each floor and each garden type in your tests. What is the minimal number of test cases to achieve 100% EP coverage? a) 3 b) 4 c) 5 d) 6 the answer is B

1. A program validates a numeric field as follows: values less than 10 are rejected, values between and including 10 and 21 are accepted, values greater than or equal to 22 are rejected. Identify all the equivalent classes (valid and invalid) for the following examples. Write the test cases providing test data ? Could you please assist me with this Question?

In the second example of employee salary , option C (i.e 28001, 32000, 35000) is also the correct answer right? They all fall under same class!

Sir, What is the answer of below questions? please explain. Thank you for your great tutorials..cheers You are testing a machine that scores exam papers and assigns grades. Based on the score achieved the grades are as follows: 1-49 = F, 50-59 = D-, 60-69 = D, 70-79 = C, 80-89 = B, 90-100=A 1. If you apply equivalence partitioning, how many test cases will you need to achieve minimum test coverage? 2. If you apply boundary value analysis, how many test cases will you need to achieve minimum test coverage?

A booking system for a city bus service prices its fares according to the time of travel: Peak-time tariff starts at 0600 and finishes at 1000 am. Off-peak tariff applies during all other times of service.The bus service does not operate between 2300 and the start of the next day's peak service.When applying the equivalence partitioning test design technique, which of the following options, shows test case inputs that each fall i nto a different equivalence partition? Options : 1. 0600,1000,1200 2. 1001, 1300, 2259 3. 0100, 0800, 2200, 4. 2400, 0800, 2200 Answer - 3 Please clarify it.

Hi Neeraj, I am requesting you to please reply to the below question with "explanation". Thanks in advance.. If a candidate is given an exam of 40 questions, should get 25 marks to pass (61%) and should get 80% for distinction, what is equivalence class. A. 23, 24, 25 B. 0, 12, 25 C. 30, 36, 39 D. 32,37,40

Can we use pen and paper during istqb exam?

Hi sir when it comes last question the first option also falls under 3rd class,4800,14000 and 28000,and the second option also same, during this time how can we identify last option is correct, please reply.

Please explain this question. If a candidates is giving the exam of 40 question, should get 25 marks to pass(61%) and should get 80% of distinction,what is equivalent classes 1.23,24,25 2.0,12,25 3.30,36,39 4.32,37,40 Which one is crct answer, they said d is crct.

Didn't get the third example ? isn't it supposed to be 1-4000, 4000 -1500, 1501 -28000 , 2800

In example section, how is "negative numbers, 1 through 15, above 15" is different than "less than 1, 1 through 15, more than 15" ?

I am not able to understand the last example of this video please explain it brief?

For EP questions 2and 3 option is also fall in same class so why option D

Question #22 (1 Point) A daily radiation recorder for plants produces a sunshine score based on a combination of the number of hours a plant is exposed to the sun (below 3 hours, 3 to 6 hours or above 6 hours) and the average intensity of the sunshine (very low, low, medium, high). Given the following test cases: Hours Intensity Score T1 1.5 v. low 10 T2 7.0 medium 60 T3 0.5 v. low 10 What is the minimum number of additional test cases that are needed to ensure full coverage of ALL VALID INPUT equivalence partitions? a) 1 b) 2 c) 3 d) 4 answer is b but I as per my understanding it should be 1 please help

Kindly help resolve the below questions

Hello Sir, Could you please help with below question..which answer should be correct and why ? Q.Following 4 equivalence classes are given below. x

Consider the following (simplified) rules for calculating the stamp duty due to the NSW government, on purchase of a house: Houses costing less than $50k are not subject to charges. Those costing $50k or more are charged $765 Those costing $75k or more are charged $1200 Those costing $150k or more are charged $4000 Those costing $225k or more are charged $6500 Those costing $400k or more are charged $13,500 Those costing $700k or more are charged $30,000 A system has been built to calculate these charges automatically. Inputs are expected to be in 1000s of dollars. Derive a set of equivalence partitions to test this system.

Postal rates for light letters are 25p upto 10g,35p upto 50g plus an extra 10p for each additional 25g upto 100g.Which test inputs( in grams) would be selected using equivalence partitioning? a. 8,42,82,102 b.4,15,65,92,159 c.10,50,75,100 d.5,20,40,60,80 Solution is b Can anyone of you please explain?

Below you will find the requirements to identify the Account Diversity Grade of a user. Read the requirements carefully and identify what test users you need to setup in order to completely test and make sure all the below requirements are covered. (Note: you should identify the optimum (minimum) number of users needed to test all of the requirements) Requirements: A user can have different types of loan accounts. Now we grade a user’s Account Diversity based on two factors. 1) loanTypeCount 2) totalAccounts loanTypeCount = the number of different (distinct) LoanType values for all accounts that the user has. However do not include LoanType = Unknown & Collections but include all others Applicable values for LoanType are ( Home Loan, Heloc, Credit Card, Car Loan, Collections, Unknown) totalAccounts = total number of loan accounts user has (do not include LoanType = Unknown & Collections but include all others) example-> if user has 3 credit cards and 2 home loans and 1 Collection account, then totalAccounts = 5 and loanTypeCount = 2) The logic to determine accountDiversityGrade is the following: If totalAccounts> 20 or loanTypeCount >= 4, accountDiversityGrade = A Else if totalAccounts> 10 or loanTypeCount = 3, accountDiversityGrade = B Else if totalAccounts>= 5 or loanTypeCount= 2, accountDiversityGrade = C Else if totalAccounts > 0 or loanTypeCount = 1, accountDiversityGrade = D Else accountDiversityGrade=null (n/a)