Curated interview practice questions with answers. These are practice scenarios, not a verified list of past interview questions.
About NVIDIA hiring for Automation Testing roles
NVIDIA designs GPUs and accelerated computing platforms used in gaming, data centres, AI and automotive. It also develops software like CUDA and AI frameworks. Its India offices in Pune, Bengaluru and Hyderabad work on chip design, verification, system software and AI. It hires for software engineers, verification engineers and test engineers.
For Automation Testing roles, this NVIDIA practice set focuses most on Page Object Model (8), Appium Mobile Automation (6), API Testing and CI/CD (5), Core Java for Testers (5). It has 3 easy, 28 medium, 9 hard questions, so you can start easy and work up to the harder ones.
Company type
Hardware & semiconductors
Headquarters
Santa Clara, California, USA
Main India offices
Pune, Bengaluru, Hyderabad
NVIDIA Automation Testing interview process
Online assessment or technical screening
Technical round 1
Technical round 2
Technical round 3 or manager round
HR round
Typical pattern based on public candidate experiences. Rounds vary by role, team and year.
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01
How do you pass the WebDriver to page objects in a parallel framework?
Use a DriverManager with a ThreadLocal<WebDriver>, created in @BeforeMethod and removed in @AfterMethod. Page objects receive the driver through the constructor or get it from DriverManager.getDriver(). Constructor injection is cleaner and easier to test. Never store the driver in a static field shared by all threads, or parallel tests will control each other's browsers.
Appium 2 split the monolithic server into a core plus separately installed drivers and plugins, managed with appium driver install and appium plugin install. It dropped the old JSON Wire Protocol in favour of W3C WebDriver only, so vendor capabilities need the appium: prefix. The default base path changed from /wd/hub to /. Old TouchAction and MultiTouchAction were removed from the Java client, so gestures use W3C Actions or mobile: commands.
03
After aborted Jenkins builds, Grid slots stay busy and new tests wait. How do you handle it?
When a build is killed, driver.quit() never runs, so sessions stay open until the node notices. Set a sensible session timeout on nodes, such as SE_NODE_SESSION_TIMEOUT of 300 seconds, so idle sessions are cleaned up. Always call quit in an @AfterMethod with alwaysRun or a finally block. In CI, bring the Compose Grid up per build and tear it down in a post always step, so each build gets a fresh Grid.
04
What is the Maven Surefire plugin and how do you configure it for TestNG?
Surefire runs tests during the test phase. For TestNG, configure suiteXmlFiles with the path to testng.xml, so mvn test runs that suite. You can pass system properties, set parallel and threadCount, and control reports. Make the suite file a property like ${suiteXml} so CI can choose smoke.xml or regression.xml with -DsuiteXml=smoke.xml.
05
Your team asks whether mobile tests should run on emulators or real devices. What do you recommend?
Use both, for different purposes. Emulators and simulators are cheap, fast to reset and easy to run in CI, so they suit smoke and regression runs on every commit. Real devices reveal issues emulators hide: performance on low-end hardware, camera, biometrics, push notifications, network changes and vendor-specific Android skins. A common plan is emulators in the pull request pipeline and a nightly run on a small matrix of real devices covering the most-used models.
06
How do you design a REST Assured framework for many microservices?
Create a base module with shared specs, auth handling, config per environment, filters for logging and reporting, and utilities. Each service gets its own client class wrapping endpoints and POJOs for its models. Tests call clients, never raw URLs. Use builders for test data, schema checks for contracts, tags to run per service, and run independent services in parallel in CI.
07
Describe a time you convinced developers to fix a problem found by automation.
Situation: an API test kept failing intermittently and developers called it a test issue. Task: prove or disprove it. Action: I collected logs from ten failures, showed the same race condition in the order service with request IDs, and reproduced it with a small parallel script. Result: developers fixed a real concurrency bug before it reached customers, and trust in the suite improved.
08
What is the LoadableComponent pattern in Selenium?
LoadableComponent is a Selenium support class that standardises how a page object ensures it is loaded. You extend it and implement load(), which navigates to the page, and isLoaded(), which throws an Error if the page is not ready. Calling get() checks isLoaded and calls load only if needed, then checks again. It gives a consistent, self-verifying way to open pages and fails fast with a clear message.
09
How do you mock an external API in automation tests?
Use a tool such as WireMock or MockServer to run a stub server that returns predefined responses for given requests. Point the application or tests to the stub with configuration. This lets you test error codes, timeouts and edge cases that are hard to trigger on the real service, and keeps tests stable when the third party is down. Still keep a few tests against the real integration.
10
What are TestNG and JUnit 5 differences that matter in automation?
TestNG has built-in groups, dependencies, suite XML, DataProvider and flexible parallel options, which suit large Selenium suites. JUnit 5 has a modular platform, tags, parameterized tests, extensions and strong IDE and tool support, and is the default for Spring and Cucumber's JUnit Platform engine. Both are capable; the choice usually follows team standards and existing frameworks.
11
What are Java collections and which ones do testers use most?
ArrayList and LinkedList for lists, HashSet for unique values, HashMap for key-value test data, and Iterator for traversing them, for example collecting web elements in a list.
12
Write a simple page object class for a login page.
public class LoginPage {
private final WebDriver driver;
private final By user = By.id("username");
private final By pass = By.id("password");
private final By submit = By.cssSelector("button[type='submit']");
public LoginPage(WebDriver driver) { this.driver = driver; }
public HomePage loginAs(String u, String p) {
driver.findElement(user).sendKeys(u);
driver.findElement(pass).sendKeys(p);
driver.findElement(submit).click();
return new HomePage(driver);
}
}
13
In a hybrid Android app, driver.getContextHandles() returns only NATIVE_APP. Why?
The webview is probably not debuggable. Android only exposes a webview to automation when the app calls WebView.setWebContentsDebuggingEnabled(true), which developers usually enable only in debug builds, so ask for a debug or test build. Also wait until the webview screen is actually loaded before reading contexts. If the app uses Chrome custom tabs, that is a separate Chrome process, not a webview. Finally check that a compatible Chromedriver is available to Appium.
14
What is a Maven multi-module project and when would you use it for automation?
A parent pom lists modules that share dependency versions through dependencyManagement and plugins through pluginManagement. In automation you might have core-framework, ui-tests, api-tests and performance modules. Teams can run or release modules separately, and shared code lives in one place. It is worth it when several teams or test types share the same framework.
15
Write a docker-compose.yml that runs a Selenium hub with Chrome and Firefox nodes.
It occurs when a collection is modified while being iterated with a for-each loop, for example removing items from an ArrayList inside the loop. Fix by using Iterator.remove(), removeIf(), collecting items to remove separately, or using CopyOnWriteArrayList or ConcurrentHashMap when threads share the collection. In parallel tests, shared lists are a common source.
17
How do you run Selenium tests in Docker containers in CI?
Use official Selenium images, either standalone-chrome for simple runs or a Grid with hub and node containers via Docker Compose. The test container or Jenkins agent points RemoteWebDriver to http://selenium-hub:4444. Containers give the same browser version everywhere and are cleaned after each run. Add shm_size for Chrome stability and record videos for failed tests if needed.
18
How do you set up distributed load testing in JMeter?
One controller machine coordinates several worker machines that generate the load. On each worker start jmeter-server with the same JMeter and Java versions, place CSV files locally and open the RMI ports in the firewall. On the controller list the workers in remote_hosts in jmeter.properties, or pass -R host1,host2, and run in non-GUI mode with -r or -R. Remember that thread counts multiply per worker, so 100 threads on 4 workers gives 400 users.
19
You need 2,000 UI tests to run on every pull request in under 20 minutes. How would you design the infrastructure?
First shrink the UI suite by moving checks to API and unit level. Then run the rest on an autoscaling Grid, for example Kubernetes with KEDA, sized so tests divided by slots times average duration fits the budget. Make tests independent with API-based setup and ThreadLocal drivers. Shard tests across CI agents, fail fast on smoke tests first, and track flaky tests separately. Pin image versions and monitor queue time.
20
What are page components or page fragments in POM?
Components are classes for UI parts that repeat across pages, such as the header, search bar, date picker or a data table. A page object then has-a component: homePage.header().search("laptop"). This follows composition over inheritance, avoids duplicate locators and matches modern component-based frontends. Components are usually scoped to a root WebElement so locators search only inside that element.
21
How do you verify that the correct page has loaded in POM?
Give each page an isAt() or waitUntilLoaded() method that waits for a unique element, page title or URL fragment. Call it in the constructor or right after navigation. If it fails, throw a clear error such as "Expected Cart page but URL was /login". This catches navigation problems at the right point instead of failing later with a confusing locator error.
22
Nightly Jenkins regression runs take 4 hours. How would you bring it down?
Measure first: find the slowest tests and setup steps. Then run tests in parallel across Grid nodes or containers, replace UI setup with API calls, remove duplicate coverage, move checks down to API level, split the suite into shards across agents, and cache Maven dependencies. Aim for a smoke stage under 15 minutes on every commit and a parallel regression under an hour.
23
Why is XPath slow in Appium and what should you use instead?
For every XPath query Appium must fetch the full page source of the app, convert it into an XML document and then evaluate the expression, which can take seconds on large screens and is even slower on iOS. Index-based XPath also breaks when layouts change. Use accessibility id first, then resource-id, Android UiAutomator selectors or iOS predicate strings and class chains, which are evaluated natively on the device and are much faster.
24
How do you handle test data cleanup in Cucumber scenarios?
Create data in Given steps through APIs, record the created IDs in the scenario context, and delete them in an @After hook, which runs even when the scenario fails. Use unique names with a timestamp or UUID to avoid clashes in parallel runs. For shared environments, add a nightly cleanup job for leftover data tagged with a test prefix.
ITestContext represents one test tag from testng.xml and is passed to listeners and configuration methods. It holds the suite, included methods and results, and has setAttribute and getAttribute to share values, such as an auth token created in @BeforeTest and read by later classes. Because it is shared by every thread in that test tag, store only thread-safe or read-only data there, not WebDriver instances during parallel runs.
28
What is method overriding and where is it useful in frameworks?
RequestSpecification holds common request settings such as base URI, base path, headers, content type, authentication and filters. You build it once with RequestSpecBuilder and reuse it with given().spec(reqSpec). This removes repetition, keeps environment settings in one place and makes switching between QA and staging easy. ResponseSpecification does the same for common assertions like status code and content type.
31
How do you handle environment-specific configuration?
First check timing: the screen may still be loading, so add an explicit wait for presence. Then check context: in a hybrid app the element may be in a webview while you are in NATIVE_APP. Confirm the locator matches exactly, including package prefix in resource-id. The element may be off screen in a list, so scroll first. Also check that the Inspector session used the same app build, language and device size as the test.
33
How do you include and exclude groups in testng.xml?
Inside a <test>, add <groups><run><include name="smoke"/><exclude name="broken"/></run></groups>. Only methods in the included groups run, minus excluded ones. Configuration methods must have alwaysRun = true or belong to the groups, or they will be skipped. You can also pass -Dgroups=smoke from Maven Surefire for CI selection.
34
How do you handle an element inside a shadow DOM in Selenium 4?
Find the shadow host element, then call getShadowRoot() to get a SearchContext, and search inside it with CSS selectors: driver.findElement(By.cssSelector("my-app")).getShadowRoot().findElement(By.cssSelector("#submit")). XPath does not work inside shadow roots. For nested shadow roots, repeat the step for each host. Closed shadow roots cannot be accessed this way.
35
Tests run fine on Chrome but fail on Firefox at the same step. How do you investigate?
Rerun on Firefox with screenshots and logs. Common causes are timing differences, different default window sizes, unsupported CSS or JavaScript behaviour, alerts handled differently, or a driver version mismatch. Compare the DOM in both browsers at that step. Fix by using explicit waits, setting window size, and reporting genuine browser bugs to developers.
36
Your test framework leaks memory during long runs and Jenkins agents crash. How do you investigate?
Check whether drivers are always quit, ThreadLocal values are removed, and static lists or maps keep growing, such as collecting screenshots or response objects. Enable heap dumps with -XX:+HeapDumpOnOutOfMemoryError and analyse with a tool like VisualVM or Eclipse MAT to see which objects hold memory. Fix the leak and tune Surefire's forked JVM memory with argLine if needed.
POM adds upfront design effort and extra classes, which can feel heavy for tiny projects. Poorly designed page objects become large god classes, mix assertions with actions, or use deep inheritance chains that are hard to follow. It also does not solve flaky waits or bad test data by itself. Good conventions, components and code reviews are needed to get its benefits.
// Start before the test, stop and save only if it fails
driver.startRecordingScreen();
// ... test steps ...
String base64 = driver.stopRecordingScreen();
if (result.getStatus() == ITestResult.FAILURE) {
byte[] video = Base64.getDecoder().decode(base64);
Files.write(Paths.get("target/videos/" + result.getName() + ".mp4"), video);
}
String parent = driver.getWindowHandle();
for (String h : driver.getWindowHandles())
if (!h.equals(parent)) driver.switchTo().window(h);
// ...then switch back to parent
Tips to crack the NVIDIA Automation Testing interview
Revise C and C++, operating systems and computer architecture, which are core to most NVIDIA engineering roles.
Learn GPU and CUDA basics, including parallel programming, threads, blocks and the GPU memory hierarchy.
Read about NVIDIA's data centre and AI platforms to understand where much of its current work is focused.
Keep a one-minute story ready for every project on your CV: problem, your part, tools, result.
Practise the hard questions on this page aloud; NVIDIA interviewers usually ask follow-ups on your first answer.
Frequently asked questions
How many rounds are there in the NVIDIA Automation Testing interview?
Candidates usually go through 5 stages: Online assessment or technical screening; Technical round 1; Technical round 2; Technical round 3 or manager round; HR round. The exact rounds change with the role, team, location and your experience, so confirm the process with the recruiter.
Which topics should I prepare for the NVIDIA Automation Testing interview?
This practice set leans on Page Object Model (8), Appium Mobile Automation (6), API Testing and CI/CD (5), Core Java for Testers (5). Revise those first, then practise explaining one or two of your own projects end to end, because most NVIDIA interviewers ask you to walk through real work.
Are these the exact questions asked at NVIDIA?
No. These are curated practice questions that match the skills and difficulty usually tested in hardware & semiconductors interviews like NVIDIA's. They are not a leaked or verified list of past questions.
Where does NVIDIA hire Automation Testing professionals in India?
NVIDIA has large teams in Pune, Bengaluru, Hyderabad. Openings and locations change often, so check the NVIDIA careers page and filter by city and experience.
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