Interview Questions

Kevin S. - "The question given is intentionally very open ended. As the key phrases used are "air travel" which can encompass all parts of the journey not just the airport or flight experience & "improve the perception" which doesn't necessarily require fixing the problem (although you'd hope that was part of the conclusion). In addition, the constraints of time (1-year) and resources ($10M) means you must be very prescriptive. As such I think it'd be important to ask the following clarifying questions"See full answer

Vijendar K. - "I'd like to clarify the question here for better understanding. Are we targeting any location? Assuming WW Do we have any demographics of the users? Assuming overall users Did we see any drop recently in TV watching users metrics for which we want to improve the watch time on TVs? No, in general we want to improve this area. Are we looking to improve the overall Netflix watch time on TV, not to acquire new users? Correct. As Netflix is offering content of so many genres of con"See full answer

Sourabh G. - "Functional Requirement Monitor health, metrics Alert in case of failure/anomaly Visualize the live health Analyse machines on periodic basis Non Functional Should not exert load on machines low latency Highly scalable Logs/Metrics Gathering push - machine gather and send to system and low priority background thread along with batching pull - heart beat check (for offline machines) Processing Real time streaming using Kafka/kinesis + Flink TimeSeries database for stor"See full answer

Saurabh K. - "P(A) = 0.6 P(B) = 0.4 P(D|A) = 0.05 P(D|B) = 0.03 Question asks to solve for P(A|D) P(A|D) = (P(D|A) x P(A))/P(D) = (0.05 x 0.6)/(P(D|A) x P(A) + P(D|B) x P(B)) = (0.05 x 0.6)/(0.05 x 0.6+0.03 x 0.4) = 30/42 = 5/7 = 0.714 Notice above that P(D) = P(D|A) x P(A) + P(D|B) x P (B)"See full answer

Cameron P. - " Questions: Deadly diseases: new and current CEO of healthtech startup: adoption phase Mission: to improve and extend lives What we do: Research new diseases and connects people to doctors Structure: Objective -> Macro-Factors -> Company -> Users -> Suggestions Objective: Why? Mission to improve and extend lives How do we inform the world about these 20 deadly diseases we detected? Macro-Factors(climate/competition) World events like pandemics - this is a good investment* "See full answer

Abdurhman M. - "Start your stream Use the Post tab to: Choose where to post your live broadcast. Write a description. Select a camera, mic and screen (if screen sharing). Add a title for your live broadcast (optional). Select the primary language of the stream. ... Once everything is set, select Go Live."See full answer

Anonymous Jellyfish - "Thank you for the question! Normally, I would want to ask some clarifying questions to try to better understand the scope of the problem. Below are some of those questions & assumptions I am going to make because I need to submit an answer without getting a response. Question 1: What is Facebook’s north star metric for this exercise? Growth? Engagement? I’m also keeping in mind that because we are talking about building a birthday feature in the earlier stages of Facebook, their north s"See full answer

Scarlett S. - "(This is debugging, then trade off question) WAU and email open rates can be influencing each other, especially an email opened and then clicked could lead to an active user, but it doesn't necessarily mean that they have correlations or be the only reason causing changes. The approach So we definitely need to look at each cause of Why MAU goes up, and why email notification open rates go down, then develop some hypothesis on for proper cause, I'd love to gather some info to narr"See full answer

Kena K. - "Lyft’s mission: To become the world’s best transportation company CQ: · Region: USA · Metrics to improve: Engagement User persona: · Passengers · Drivers Will consider passengers persona for this case. Use case / pain points: Exact pick up location is not visible on the map Not able to communicate exact location to the driver due to unknown location How to change the pick-up location in case passenger has to move around Features: Passenger can share a pictur"See full answer

Greg W. - "Clarifying Questions: Is this for business travel, personal travel, or both? Are there any particular objectives that we want to focus on? Think about why Facebook would want to do this is it because they are thinking about building an external-facing travel product, and want to test it on Facebook employees first? Facebook employees work hard, so they want to make sure that their employees are taking the vacations they need to optimize performance List user types employees trav"See full answer

Adarsha S. - " import java.util.*; public class Solution { public static List generateParentheses(int n) { List strings = new ArrayList(); if(n == 0){ return strings; } StringBuilder stringBuilder = new StringBuilder(); stringBuilder.append("("); int openCount = 1; int closeCount = 0; int positions = (n*2)-1; generateBrackets(positions, stringBuilder, strings, openCount, closeCount); r"See full answer

Julien C. - "Hi, Sharad! Quick feedback after reading your response: make sure to understand what's the underlying problem: Why do users stop using the app after 3 months? Only then can you give specific and high-impact recommendations. I hope this helps!"See full answer

Abhinav J. - "Use Normalization when: When using pixel values (0-255) into a Neural Network. ➔ Normalize the data between [0,1] to avoid huge input values that could slow down training. When using k-Nearest Neighbors (kNN) or K-Means Clustering. ➔ Because distance metrics like Euclidean distance are highly sensitive to magnitude differences. You are building a Recommender System using Cosine Similarity.➔ Cosine similarity needs data to be unit norm. Use **Sta"See full answer

Ridhima K. - "Youtube's mission is to give everyone a voice and show them to the world, in video format. In order to do so, Youtube is optimizing the experience for creators and consumers, and needs to add a layer of smart discovery for bringing the content to the world. Recommendation engine can be for creators- recommending what type of videos (length, genre, video size, etc) they should create for maximum viewership, or for consumers, recommending relevant videos. We'll focus on the recommendation engi"See full answer

Product V. - "Clarifying Questions What is definition of blind - people who cannot see Is this also inclusive of partially blind - No Does this cater people who are blind naturally or got blind due to some illness or accident - Only natural Why do you want to build it - what is the intended goal Improve the smartphone experience Do we expect the users any kind of phone experience when we talk about this device - Yes, basic phone experience with accessibility features "See full answer

Jessie Y. - "Instagram Reels: Instagram's answer to TikTok, Reels allows users to create and share short-form videos within the Instagram app. It leverages Instagram's existing user base and social features. YouTube Shorts: YouTube introduced Shorts as a feature within its platform to enable users to create short, catchy videos. It capitalizes on YouTube's extensive content creator community and viewer base. Snapchat Spotlight: Snapchat's Spotlight feature highlights short-form videos in"See full answer