Interview Questions

Ashish G. - "Rate Limiter is to limit the number of request from a particular IP Address. Rate limiter will block the IP address to reduce the load on server. It should be highly available and handle concurrent requests. Blocked IP addresses should be kept in a pool which is present in shared cache. We need to keep threshold value after it reaches threshold value it should start blocking IP address. All these ip address to be kept in No SQL DB. Batch will run that will clear the cache and delete all the bloc"See full answer

Rohit K. - "The product is text-to-music that means people can use the tool to create custom music by prompting into the tool We must identify who needs music but cannot currently create it easily or affordably. Target Segments: Content Creators: YouTubers/Streamers needing royalty-free background tracks. Game Developers: In-game music. Marketing Teams: Quick, branded audio for social media ads. Casual users : Creating music for peer share Problem to solve: Solving the "Copyright Str"See full answer

D P. - "Question for the community: have others experienced a situation where the interviewer really pushed for defining a success metric early on in the case before making too much progress on the case itself? If so, how did you handle? How I approached the case: I used the framework taught here on Exponent but have a question for the community. At the beginning of the interview, I shared my steps - company goals, customer, painpoints, solutions, prioritize and if we had time, I'll explore some succ"See full answer

Anonymous Anteater - "user table - with userid, username, email, phonenumber, accountcreateddate exercises table - types of exercises - indoor walk, outdoor walk, running, stairs, cycling, swimming etc - exerciseid, exercisetype date table - date, day, month, year - with dateid Session table - userid, sessiondateid(linked to dateid in date table), exerciseid, distance covered, calories spent, starttime, endtime "See full answer

Anchal V. - "supervised learning: model is trained on the labeled data unsupervised learning: no labels provided - model learns by finding patterns , structure and groupings in the data. Semi-supervised learning: use small set of labels to guide learning for the larger pool of unlabeled data. reinforcement learning: leans by interacting with students the environment, receives reward and penalties based on actions self supervised: no labelled data . The model makes its own practice problems by"See full answer

Ash J. - "Clarify: I will assume that misinformation includes posts, videos and pictures and that sources could be Groups/ Pages and Individuals. High level structure: Mission, Information funnel and drop-off points, Metrics & Trade-offs, Mitigations Mission/ Strategy: Facebook's mission is to bring the world closer together and empower people to build community. Reliable information is key to fostering a healthy community. In light of recent world events and public sentiment, it is important f"See full answer

Scott S. - "Designing a Price Drop Tracker system like CamelCamelCamel involves creating a platform that tracks price changes for products on various e-commerce websites and notifies users when prices drop. Here’s a detailed system design for such a service: Functional Requirements User Registration and Authentication\: Users can register and log in. Support for social media logins (e.g., Google, Facebook). Product Tracking\: Users can add products to their watchlist for"See full answer

Jacky Y. - "Problem scope: Can this system detect Bot in real-time online or offline? Both. Online traffic: 1M DAU. Latency: 2s. Offline frequency: daily Offline data: 2B activity logs. Data: How do we know a Bot player (Label)? Human label. Imbalance data: reweight, resample. Develop a Bot simulator to generate more data offline for training. Given lower weight to simulator data than human label. Features: Signals from different models online. Log all the features for offline. Propose new features: dail"See full answer

Donald Y. - "from typing import List def longestcommonprefix(a: List[int], b: List[int]) -> List[int]: prefix = [] for x, y in zip(a, b): if x == y: prefix.append(x) else: break return prefix `"See full answer

Anonymous Muskox - "YouTube Goal -> Give voice to everyone and show them the world, Video -> Shorts( Dominated by Shorts, Reels, Tiktok Mid(1-25 Min). -> Youtube Medium Long(60-90 Mins) -> [Opportunity] Long(150-180 Mins) -> OTT Platform, Movies Youtube can assist content creators on Youtube to make high-quality Film Like Videos without any Production Setup. Assisting Content Creators to create Movies with"See full answer

Pramod V. - "Referring to https://www.forbes.com/sites/forbesbusinesscouncil/2022/03/23/15-strategies-for-balancing-competing-stakeholder-priorities/?sh=7c82aa68262f Understand the conflicting priorities and align it with the goal/ objectives and the company mission. Start with the Least Common Denominator between the conflicting priorities to come to a commonality and start from there to objectively approach the next imp priority Always keep communication on and be transparent with 'equality' an"See full answer

Bimal M. - "Clarification questions: What do you mean by online furniture-selling market? Why would google want to do it? Why does google want to do it now? Where does google want to launch it? Let me make the assumptions answering above questions: It is like google flights, say we call it google furnitures, where it organizes, curates furniture information to the users and then refers to the seller website instead of selling furniture directly to the consumer like amazon, walmart, way"See full answer

Adarsh S. - "Thanks for the question! This is one of my favourite topics because it’s at the core of what we do as PMs DAILY: making the complex simple to drive alignment. I’ve got a structured way to approach this, and I’ll use it to explain payment aggregators - like Plaid - and how they enable Open Banking, with a twist about a technical hiccup I’ve seen in practice. Let’s dive in. I start by assessing the audience. Say I’m talking to a marketing manager at Transak - someone sharp but not techni"See full answer

Alibi M. - "I would answer this question using MECE framework: Profit = Revenue - Costs. Revenue = # customers * price In case of the trading platform, this could be translated into avg. trading activity per user * avg. commission rate . Ask if there has been any recent change to Active users or their trading activities. Similarly, ask if the commission rate has been changed recently. Based on this information, you can then identify the problem and get to the root cause of this. Similarly with Costs. "See full answer

VContaineers - " Compare alternate houses i.e for each house starting from the third, calculate the maximum money that can be stolen up to that house by choosing between: Skipping the current house and taking the maximum money stolen up to the previous house. Robbing the current house and adding its value to the maximum money stolen up to the house two steps back. package main import ( "fmt" ) // rob function calculates the maximum money a robber can steal func maxRob(nums []int) int { ln"See full answer

P D. - "My Least Favorite Product: Amazon Kindle I have both: amazon kindle 8th generation (with backlight) and without backlight for many years now and also part of kindle unlimited program. And would be having more than 200-300 books on it already ranging across various topics What i don't like about kindle is that, its operating system has not evolved since many years. It's as difficult to operate as it was when it was launched. Infact now i don't prefer to browse the books on kindle, instead buy t"See full answer

S V. - "I think, robots.txt file is provided by websites which web-crawler is crawling. Am I wrong somewhere or missing some context?"See full answer