For instance, you can set a context node to narrow down the search scope to specific sections of a webpage, improving efficiency and accuracy in locating elements. In this blog post, we’ll provide you with a list of Selenium interview questions that are likely to come up in an interview setting. List comprehension is generally the fastest and most Pythonic for building lists. It supports creating, reading, updating, and deleting (CRUD) model objects without writing additional code. The 12-Factor App Methodology is a set of best practices for building cloud-native applications that are scalable, maintainable, and portable.
Together they describe a style a team opts into, not a protocol you implement by checking boxes. A correct PUT implementation resets them to their defaults or nulls them out, since PUT means “this is now the entire resource,” not “update whatever I mentioned.” Candidates who treat PUT like a partial update get caught here almost every time. PATCH applies a partial update and isn’t idempotent by definition, though a specific patch document (setting a field to an exact value) often behaves idempotently in practice anyway. Stack Overflow’s 2024 Developer Survey found that 90 percent of professional developers reach for official API or SDK documentation as a primary way to solve problems on the job, ahead of almost everything else on the list (Stack Overflow, 2024).

• Microservices should be designed to handle network failures gracefully using resilience patterns such as Circuit Breaker, Retry, Timeout, and Fallback.
• It helps maintain performance, high availability, and cost optimization by scaling instances in or out automatically.
• These three types of data differ in their structure, how they perform, and how easy it is to work with them based on whether you want low-level access to the data or high-level, optimized operations.
• The key difference between a generator and a regular function is that a generator can yield values one at a time, whereas a regular function returns all values at once.

TTL (Time To Live) Indexes automatically delete documents after a specified period, making them useful for expiring temporary data. Aggregation operations in MongoDB are performed using the aggregate() method, which processes documents through a pipeline of stages. React Developer Tools is a browser extension that helps developers inspect, debug, and analyze React applications. It is commonly used when you need to interact with the DOM without triggering a re-render.

Statements and control flow

I want to be a professional developer in the next ten years, which explains why I am working extra hard. You have a team of highly experienced professionals who I’d love to work with. In the second part of the question, I am confident that this is the best place to advance my career. Even though I had lots of experiences that have positively shaped how I do my work, I wanted to advance in my career. We met the deadlines we had originally set and registered an excellent performance.
This tests the understanding of how different data structures can be combined and the efficiency of operations. Push adds an item to the end of the list, pop removes the last item, and peek returns the last item without removing it. https://uvik.io/ The expectation extends beyond simply problem-solving to an understanding of efficient solutions and the strategic trade-offs involving time and space in your implementations. In tackling intermediate-level questions and beyond, the emphasis pivots toward evaluating advanced problem-solving proficiency and a more profound familiarity with intricate coding concepts. After iterating through the list, it returns the total count of the target number’s occurrences.
This allows you to verify that an element displays the intended message or content, which is essential for text validation in UI elements. These text selectors provide testers with a robust toolkit for navigating complex DOM structures while maintaining clarity in the targeting of elements based on their visible text content. These locators enable testers to efficiently navigate and perform actions on various elements throughout their testing workflows. Locators in Playwright are essential tools used to interact with elements on a webpage during automated testing.