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SDET Interview Questions

By Priya PedamkarPriya Pedamkar

Home » Software Development » Software Development Tutorials » Top Interview Question » SDET Interview Questions

SDET Interview Questions

Introduction to SDET Interview Questions and Answers

SDET, Software Design Engineer in Test or Software Development Engineer in Test, stands for mainly testing performed on a software product. It actually needed some candidate who can able to develop and as well as performing testing. Microsoft initially started this, but currently, other organizations are very conscious of the same, and they are really looking for someone who expert in SDET for involving in the full development of their product and as well as involving with the testing design which needs to be performed for that individual development. The organization can introduce the same resource in two key tasks that will always be profitable for them.
Here we will discuss top SDET Interview Questions.

If you are looking for a job related to SDET, you need to prepare for the 2020 SDET Interview Questions. Every interview is indeed different as per the different job profiles. Here, we have prepared the important SDET Interview Questions and Answers, which will help you succeed in your interview.

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This 2020 SDET Interview Questions article will present the 10 most important and frequently asked SDET interview questions. These interview questions are divided into two parts are as follows:

Part 1 – SDET Interview Questions (Basic)

This first part covers basic Interview Questions and Answers.

Q1. Explain differences in details between Software Development Engineering in Test (SDET) and testing software manually?

Answer:
SDET is mainly using doe automation testing. This means developing a product that can be tested automatically without manual intervention. Whereas manual testing is not at all meet these criteria.

Q2. Write a program to reverse a number in any language?

Answer:
public class reverseNumber {
public long reverse(long num)
{
long temp=0;
while(num!=0)
{
temp=(temp*10)+(num%10);
num=num/10;
}
return temp;
}
public static void main(String args[])
{
long n= 654312;
reverseNumber inp = new reverseNumber();
System.out.println(“Given number is “+ n);
System.out.println(“Reverse of given number is “+inp.reverse(n));
}
}

Q3. Explain in details how we can define ad-hoc testing in the current IT industry?

Answer:
Ad hoc testing is one of the testings very much popular in the IT industry. This kind of testing mainly unplanned and without documentation. It normally needs to perform when some ad hoc requirements come from the client; the developer has to develop in the same priority manner. Now tester needs to test it immediately and come with proper deliverables in a very small period of time. Documentation or planning is not always possible for that, but some of the organization maintained some specific tools for tracking this kind of task, especially for additional billing.

Let us move to the next SDET Interview Questions.

Q4. Two big keywords are normally very useful for the tester, one is the priority, and another is severity; explain the difference between them in detail?

Answer: 
Priority and Severity are both essential two keywords in the IT industry, especially for those involved in the production support activity of their provided product or any client’s existing system. Currently, all the bog organization tried to follow one specific tool where one helpdesk team has been assigned for handling. Normally, end-users reached to that corresponding helpdesk team to raise their concerns, or end-users can create their concerns directly in that specific tool. Some helpdesk person first analyzes the same, then given the priority based on the end-user impact. Helpdesk person, tester, developer, and some point-of-time business analyst are involved with that issue and try to understand the exact impact of that specific issue, based on that they have given the severity of that issue. So priority defines how important that issue is, and severity is defined as the impact or destruction ability of that issue.

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Q5. Explain details explanation of the job responsibility of a tester or Software Development Engineering in a test role?

Answer:
These are the common SDET Interview Questions asked in an interview. Several responsibilities normally need to follow by an SDET tester in the current IT industry.

  • Write automation of testing and set up the same for varieties platforms like web or mobile.
  • Managing and handling bug report.
  • Maintaining the proper communication channel between the developer and the client.
  • Preparing and delivering test cases.

Q6. What is ad-hoc testing?

Answer:
Ad-hoc testing is defined as the testing is being done on an ad-hoc basis without any reference and proper inputs to the test case and without any plan, test cases, and documentation. This type of testing’s main objective is to find defects and break the application by executing different flows of the application or random functionality.
Ad-hoc testing is an informal way of finding bugs from an application and can be performed by anyone in the team. It will be difficult to find bugs without test cases, but sometimes during ad-hoc testing, bugs will find which we didn’t find through normal testing or existing test cases.

Q7. Given some example with details regarding some of the typical experience or excessive load working day of a tester or software development engineer in test (SDET) resources?

Answer:
Three key tasks are always taken huge time for the tester on any day:

  • Understanding the requirements of the project.
  • Preparing and executing require test cases based on the client expected functionalities.
  • Reporting about the bugs identified on individual functionality developed for the client to the developer and retest the same after redelivery by the developer for ensuring expected functionality properly deliver without any common bug.

Part 2 – SDET Interview Questions (Advanced)

Let us now have a look at the advanced Interview Questions and Answers.

Q8. Explain some expert comments of how one tester can decide that provided product are actually ready to move in the live environment?

Answer:
This is one critical decision, so a single person or junior guys have never taken it. Only the developer and tester are not involved in taking this decision; higher management is periodically involved in that. Management test mainly ensure by validating below for ensuring product delivery are bugless:

  • Validating bug reports provided by the tester. How the bug got resolved and retesting done by the tester or not.
  • Validating all the test cases written by the tester for that specific functionality, documentation, and confirmation taken from the tester on the same.
  • Run automate test cases for ensuring new functionalities does not break any existing functionality.
  • Sometimes validating test coverage report, which ensures all the developing component has been covered by test cases written.

Q9. Write a program to swap two numbers without using any temp variable?

Answers:
The program to swap two numbers without using any temp variable is as below:
public class swap{
public static void main (String args[])
{
int x = 20;
int y =30;
System.out.println(“Numbers before swapping”);
System.out.println(“ number x is “ + x);
System.out.println(“number y is “ +y);
// Swapping numbers
x= x+y;
y=x-y;
x=x-y;
System.out.println(“Numbers after swapping”);
System.out.println(“ number x is “ + x);
System.out.println(“number y is “ +y);
}
}

Q10. If someone needs one specific format of bug reports from a tester, then what will be the best way or approach can take by the tester for providing the same?

Answer:
One bug report normally contains below:

  • Bug Summary
  • Reproduce steps
  • Expected behaviour and current behaviour of one specific bug.

Let us move to the next SDET Interview Questions.

Q11. Explain in detail about different kinds of testing called Alpha and Beta?

Answer:
Alpha testing done by the tester identified bugs before moving the product to a live environment or to the end-user. The beta bug is normally identified by the end-user, who is the product’s actual users or application.

Q12.What is Risk-Based Testing?

Answer:
Risk-Based testing is defined as the functionalities of a product are tested based on the priority of the deliverables. Risk-Based testing includes testing of crucial features of a product that will have a business impact, and the probability of the failure of those features is very high. The priority for all functionalities of a product is set based on the business requirement; then the high priority functionalities will be tested first, then medium, and then low priority functionalities. Risk-based testing will be performed when there is no sufficient time to test all the product’s functionalities.

Q13. Normally there have different categories available to make one specific group by of varieties test cases, given the explanation of them?

Answer:
This is the most popular SDET Interview Questions asked in an interview. Some popular test cases in the current IT industry are below:

  • Functional testing
  • Frontend or User interface testing
  • Performance Testing
  • Integration testing
  • Load testing or User usability testing
  • Security testing

Q14. Common challenges one software tester normally faced is proper documentation not maintaining for testing. In that case, how we can overcome the same?

Answer:
It is one of the common scenarios where documentation is not properly available for all kinds of test cases, but the requirement must be fulfilled and delivered to the client on time. In that case, normally tester is following some client provided mail where describe all the requirements properly, if possible, screenshots of the application where those parts of changes clearly mentioned, or some Mon or verbal telephonic discussion is done with the client for understanding the exact functionality of that changes which is enough for testing quickly and deliver the same in expected timeline.

Recommended Articles

This has been a guide to the list of SDET Interview Questions and Answers so that the candidate can crackdown these Interview Questions easily. Here in this post, we have studied top SDET Interview Questions, which are often asked in interviews. You may also look at the following articles to learn more –

  1. Data Structure Java Interview Questions
  2. Kafka Interview Questions
  3. UI Developer Interview Questions
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