Interview Questions

Louie Z. - "DNNs can learn hierarchical features, with each layer learning progressively more abstract features, and generalizes better. SNNs are better for simplier problems involving smaller datasets and if low latency is required."See full answer

corrie881 - "The question is about Netflix users decreasing 10%, not about delivery app."See full answer

Satej M. - "Problem Statement: 10% of Netflix users are inactive. How would you investigate? Clarifying Question: Define inactive users? Assuming these are the users who have not logged Netflix for last week/last month etc Time span to measure inactive users? Assuming inactive users are inactive from last week. Investigation Questions: Has there been a change or error logged on the analytical tool we are measuring "Inactive users" metric? Does the metric show Netflix inactive"See full answer

P K. - "Clarifying/Assumptions: Assuming improvement refers to lift in engagement in this case. Youtube refers to the WWW and mobile platforms. Key User Segments: Creators Influencers/Celebrities Video bloggers Regular users Viewers Power watchers Casual watchers Churned watchers Selecting the Influencer segment from the above list since it is a smaller volume of users and will have a big impact on viewers. Also, it is easier to understand"See full answer

Nicholas S. - "First thing the interviewee did wrong is not asking clarifying questions. This is the most vague problem I have every heard, and the interviewee just made assumptions and started programming."See full answer

Anisha S. - "SELECT d.name as departmentname,e.id as employeeid,e.firstname,e.lastname,MAX(e.salary) as salary FROM employees e LEFT JOIN departments d ON e.department_id=d.id GROUP BY department_name ORDER BY department_name;"See full answer

Kwabena B. - "Assumptions This estimation will not take into consideration service fees, delivery fees, or tips we are specifically interested in consumer purchases of fruits and vegetables from local grocers (i.e. instacart, peapod, wholefoods/primenow, etc.) Fresh and frozen produce are in scope Equation NYC annual online produce purchases = (Num NYC households) x (% pop. that purchase produce online) x ($ spent on online produce purchases) (NYC HH) = 300M Americans --> 100M HH"See full answer

BePostive - "· Listen both sides and without any bias. Support or focus on the problem rather than person. Take necessary steps in case there is middle ground its well and good if both parties agree. If not be honest and support the person who is correct. Ultimate goal is to be useful for overall project and company rather individual satisfaction. The approach should be fit into overall team goal."See full answer

Hayatu H. - "What do all data scientists need to know about how to work with very large datasets? 37 Follow Request Answer More All related (39) Recommended 📷 Corrin Lakeland · Follow , M.S. Data Science, University of St. Thomas, St. Paul (2018)6yData Science consultant and managerUpvoted by[Tom Halloin](https://www.quora"See full answer

Nitika B. - "Equation: Cost = Amount of storage required per year * Cost per year * 3 Amount of storage required per year = DAU * Storage requirement/user * 365 Assumptions: Cost per year = $99 = $100 Smart phone growth rate = 2% (But negligible at Pixel level) Annual Smart phone users = 2.8B Android users = 76% Google Pixel users = 1% Total Users = 2.8B * 0.01 = 280M *0.01 = 2.8M Method 1: Cost = Active Users + Cost/year * Number of years Cost = 3* 2.8M * $100 = 8.4M*100 = $840M Cost = $8.4B Method 2: C"See full answer

Mereke D. - " Before starting to answer let me gather the necessary details before proceeding: Objectives and Goals\: "What are the primary objectives of implementing the push notification system? Are we aiming to increase user engagement, drive sales, or provide timely updates?" Target Audience\: "Who is the target audience for these push notifications? Are there specific user segments we should focus on?" Platform and Device Considerations\: "Which platforms (iOS, Andr"See full answer

Vijay P. - "Explained in STAR format one of the project situation where I had originally approved problem with different design which was correct approach that time. But as the project progressed that approach needed revision. Emphasized on facts why original approach was taken with points. Also focused tail end of discussion on learnings out of situation and how you end up deploying better solution from that learning."See full answer

Cj K. - "Clarifying Q Is the search traffic meaning # visits clicked through the 'search' button from the homepage(search CTR)? or does this include # pages viewed after the search result pages (search depth)? Hypothesis I believe introducing Gen AI as a default feature on the Google's search box will increase #search traffic. I assume the biggest user pain point within current google homepage is that deciding on a keyword for search. Unlike other alternative platforms such as"See full answer

Brandy L. - "The North Star Metric for Google Photos should be: Monthly Active Users (MAUs) who successfully store, organize, or retrieve photos/videos. Why? This metric reflects Google Photos’ core value: helping users store, manage, and access their memories seamlessly. It ties user engagement with the platform's primary offerings: reliable storage, easy search, and organization. Supporting Metrics: User Engagement: Monthly Active User (MAU) ratio: Growth and retention trends. "See full answer

Kamal .. - "Designing a video streaming system like Netflix or Facebook Video involves addressing multiple aspects, such as scalability, availability, low latency, and high performance. Here's a high-level design: System Requirements Functional Requirements: User Management: User sign-up, login, and profile management. Subscription plans and payment integration (for Netflix-like systems). Content Management: Upload, edit, and delete videos. Categorize content (genres, recommendations). Video Playback: S"See full answer