{"id":983,"date":"2021-06-01T10:44:00","date_gmt":"2021-06-01T07:44:00","guid":{"rendered":"https:\/\/arc.dev\/developer-blog\/?p=983"},"modified":"2024-04-17T11:30:47","modified_gmt":"2024-04-17T03:30:47","slug":"selenium-interview-questions","status":"publish","type":"post","link":"https:\/\/arc.dev\/talent-blog\/selenium-interview-questions\/","title":{"rendered":"21 Selenium Interview Questions & Answers to Know (Basic to Advanced)"},"content":{"rendered":"\n

Are you about to hire a quality assurance analyst, automation tester, software engineer in test, or any other Selenium-related positions?<\/p>\n\n\n\n

To hire the best Selenium developer, you\u2019ll have to give your candidates a technical exam assessing their knowledge of this industry-favorite automation and testing framework.<\/p>\n\n\n\n

In this guide, we walk you through all the important Selenium interview questions and answers you might want to include in your own interview guide. From the fundamentals to the advanced, we\u2019ll give you common questions on Selenium, expected answers, and an explanation of what you, the technical recruiter, should look for when asking the questions.<\/p>\n\n\n\n

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Basic Selenium Interview Questions<\/h2>\n\n\n\n

What is automation testing, and what are its advantages?<\/h3>\n\n\n\n

It is key that a test engineer (regardless of discipline) knows from a high level the basic definition of automated testing, as well as its advantages over manual testing.<\/em><\/p>\n\n\n\n

Test automation is the use of software (separate from that being tested) to control the execution of tests and compare the actual results with the expected results.<\/p>\n\n\n\n

Any of the following types of tests may be automated:<\/p>\n\n\n\n

  1. Unit testing<\/li>
  2. Smoke testing<\/li>
  3. Functional testing<\/li>
  4. Integration testing<\/li>
  5. Regression testing<\/li>
  6. Software testing services<\/a><\/li><\/ol>\n\n\n\n

    Creating automation tests requires an upfront initial cost by the organization, but it has the following benefits:<\/p>\n\n\n\n

    1. Increases efficiency<\/li>
    2. Ensures consistency of tests<\/li>
    3. Wider test coverage<\/li>
    4. Reduced manual testing<\/li>
    5. Reduced long-term time and cost (requires initial time\/cost investment)<\/li>
    6. Reliability in results<\/li>
    7. Tests can run 24\/7 in parallel at any scale<\/li>
    8. The ability to reuse (test cases can be modified\/ duplicated)<\/li><\/ol>\n\n\n\n

      What are the Selenium suite components?<\/h3>\n\n\n\n

      There are four components of Selenium: (1) Selenium IDE, (2)<\/strong> RC, (3)<\/strong> WebDriver,<\/strong> and (4) Grid<\/strong>.<\/p>\n\n\n\n

      Selenium IDE<\/strong>: The simplest, and easiest to learn, it is a Firefox plugin that is easy to use and install. Because of it\u2019s simplicity, it has limitations and should only be used for prototyping.<\/p>\n\n\n\n

      Selenium Remote Control (RC)<\/strong>: The initial flagship testing framework for Selenium, it allows cross-browser and cross-platform testing using a variety of different languages.<\/p>\n\n\n\n

      WebDriver<\/strong>: The most modern Selenium framework, WebDriver controls the browser directly by communicating with it. It implements a more modern and stable approach to automating browser actions.<\/p>\n\n\n\n

      Selenium Grid:<\/strong> A tool used together with Selenium RC to run parallel tests across different machines at the same time.<\/p>\n\n\n\n

      The Selenium suite components are the foundation of any Selenium project, and this is required knowledge for any Selenium test engineer.<\/em><\/p>\n\n\n\n

      What are the testing types supported by Selenium?<\/h3>\n\n\n\n

      Selenium supports Acceptance, Functional, Performance, End-to-End, Smoke, Sanity, UI, Integration, and Regression Testing.<\/p>\n\n\n\n

      Knowing the test types supported by Selenium demonstrates that the candidate is familiar with structured, well-known test methodologies.<\/em><\/p>\n\n\n\n

      What is the same-origin<\/code> policy and how is it handled?<\/h3>\n\n\n\n

      The same-origin<\/code> policy is a common security best practice. Candidates that have worked in organizations with a mature security posture will have encountered same-origin<\/code> policies.<\/em><\/p>\n\n\n\n

      The same-origin<\/code> policy prohibits JavaScript code from accessing elements from a domain that is different from where it was launched. This is a security measure, and it ensures that content from your site will never be accessible by a script within another site.<\/p>\n\n\n\n

      A workaround for the same-origin<\/code> policy is to use Selenium Server to proxy traffic between the browser and the application for testing to mask it under a fictional URL, bypassing same-origin<\/code> policy restrictions.<\/p>\n\n\n\n

      What is Selenese<\/em>? What are the three primary types of commands in Selenese<\/em>?<\/h3>\n\n\n\n

      Selenese<\/em> is the set of selenium commands which are used to perform operations on the web in Selenium IDE.<\/p>\n\n\n\n

      The three primary types are:<\/p>\n\n\n\n

      1. Actions<\/strong>: Commands which can change the condition of an application (clicks, etc.).<\/li>
      2. Accessors<\/strong>: Verify the state of the application.<\/li>
      3. Assertions<\/strong>: Used for checking the state of an application against expected conditions.<\/li><\/ol>\n\n\n\n

        Candidates who correctly answer this question show familiarity with Selenium and its commands and demonstrate their ability to communicate at higher tiers. Knowing the three primary types allows them to collaborate better with their peers.<\/em><\/em><\/p>\n\n\n\n

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        Explore our other software development interview questions and answers to prep for your next remote job.<\/p>\n\n\n\n

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