Interview Questions

Agni W. - "Interesting questions. Thank you for asking it. S: Suppose I want to add notifications service to an app that provides user directed content, that is is dependent on user's past preferences T: if you ask me for a prototype, then I would use API gateway/ LB, Lambda, storage in SQL and No SQL both, have caches. later we could use CDN, have EC2 instances to run the app. We could deploy Kafka pipeline also. Create notification service on the existing app. - that will be a micro service A: Since"See full answer

Anonymous Beaver - "Clarifying questions: Reason to add this feature? No particular reason but let's assume it's an industry practice Any resource constraints? None for now I am assuming all furniture sold on the site is Wayfair's and not sold by third parties? Yes Approach: Industry, company and product profile and target audience Wayfair is a e-commerce company selling furniture. Direct competitors are other online only businesses like amazon. Indirect competition include physical stores like home depot/l"See full answer

Anonymous Panda - "h"See full answer

Shaheen B. - "Facebook is now more safe app it designed for all purposes advertise your collection and doctor's advise there clients also and more amazing things we do. I don't understand this questions"See full answer

Exponent - "This question is a Diagnosis Question. It's used to test your ability to perform root cause analysis (RCA), identify many possible issues, come up with a theory of probable cause, and address how you would solve this issue. A drop in video engagement can signify either a technical issue (the video player is broken) or a product issue (recommendations performing poorly). Let's follow the template for answering Diagnosis Questions: Ask clarifying questions **List potential high level"See full answer

Ayo A. - " Broke down the problem in this: Features scope API design Pseudo code for specific components Data model/schema Back-of-the-envelope calculations Reference links Link to whiteboard or diagram such as https://sketchboard.me/new Good luck! Considerations: Content could be potential large Older content should clean from the server URL: Pastebin.com/2324234 Features Scope: user can paste any text content .TXT, .HTML Limit on the amount content compress data and send over"See full answer

Varun J. - "Timeline and trends analyze period when the CTR was down Check external factors Seasonality and holidays Competitive factors Industry-wide changes Ad performance analysis Ad copy Product feed quality Pricing Promotions and discounts Audience targeting and segmentation Specific demographics? User segment? Device across mobile, desktop, and tablet Ad placement and auction insights Anything changed with ad placement?"See full answer

The_ A. - "The best and average of both the algorithms is same which is O(nlog(n)), but the worst time complexity of QuickSort is O(n^2){a case where all the elements are sorted in opposite to the fashion/order you want} while the worst TC for merge sort remains the same O(nlog(n)). and The SC for QS=O(logn) and MS=O(n)."See full answer

Niaz - "Clarification : What do you mean by fake drugs ? Ans : drugs that are counterfeit and not approved by the FDA. Intro / scope : Fake drugs is a big problem and can even lead to someone death. For this question I plan to focus on the US market and drugs that can be bought over the counter and does not need a doctor's prescription. For prescription drugs, pharmacists play a key role in ensuring the doctor's prescription correct and pharmacists can also police fake drugs. Therefore I will focus o"See full answer

Exponent - "This is a Design a Product question. For this, we'll want to follow the formula for success: Ask clarifying questions Identify user types, behaviors, and pain points State the goal and use cases List current solutions Improvements / net new solutions Evaluate and select solutions Measure Success Summarize Ask clarifying questions It's important to get clarity on anything unclear. This may seem like a straightforward question, but us"See full answer

Emmanuel M. - "I'm so sorry I know a little about estimated answers"See full answer

Gabriella F. - "Table user is empy....... Problem with this problem "See full answer

Shubh T. - "Clarifying Qns: Note: How do we define DAUs? Let's say it's open ended and based on general engagement (watch time, comments, etc.) Did the watch time went down and comments went up for the same videos or are we saying total watch time and total comments on Youtube? (Total) I am assuming we are not including Youtube Live videos because those are typically live chat 1000’s of comments for a single video. (Correct) Do we know if these two could be independent problems not correlated wit"See full answer