Interview Questions

Alvis F. - "Requirements and Goals Primary Goal:Store key-value pairs in a cache with efficient access (reads/writes). Evict items based on a certain “rank,” which might reflect popularity, frequency, or custom ranking logic. Functional Requirements:Put(key, value, rank): Insert or update a key with the given value and rank. Get(key): Retrieve the value associated with the key if it exists. Evict(): If the cache is at capacity, evict the item with the lowest rank (or according"See full answer

Sreenath P. - "I confirmed with the interviewer that its about how slave replaces primary when primary node when suddenly shuts down. It was very tough question for me i felt. i told, we need to maintain schema of primary, secondary instances with their URL's and posts. There should be heartbeat service which always pings the actual microservices to get to know their instances health."See full answer

Rachita D. - "Start by explaining your understanding of Google Maps. It is a free web/mobile-based feature that allows users to navigate from Point A to B, trip planning locate restaurants, hair salons, other points of interest around a point on the map Businesses use to sponsor advertisements based on Map search string. Clarify what does improvement means, "Improve" is a loaded term - what do we mean by improvement: increased ad revenue, improve the quality of the results, increase downloads, imp"See full answer

P K. - "Clarifying Questions: Assuming this will be part of FB product. Assuming this is for the US and no major constraints in terms of finances or resources. Goal: To improve user engagement Travel Personas: Solo personal Traveler Group personal Travelers Business travelers Tour operators Transportation Companies (airlines, roadways, trains etc). Choosing to focus on group travelers because most personal travelers usually travel in groups and the volume of this user base"See full answer

Astro S. - "Please provide a transcript. One grasps 150 words in a video, but can grasp 250 words when reading text."See full answer

Ilakiya R. - " Design & Architecture Overview: The system was a scalable, cloud-based web application built to manage customer data and automate service requests. Frontend: React.js: Chosen for its component-based architecture, reusable UI, and fast rendering using Virtual DOM. Backend: Node.js with Express.js: Selected for non-blocking I/O, scalability, and rapid API development. Database: MongoDB: Used for its flexible schema, scalability, and ease of handling unstructured data. Authentication: JWT"See full answer

Dean Z. - "I will use below 4 pillars to rate and prioritize those 5 projects: Analyze the impact of those 5 projects, to our team and to the whole company maybe Find out if those 5 projects have any dependency between each other Clarify the timeline of each project Identity the status of resources to work on those 5 projects and also the status of their dependencies"See full answer

Aabid S. - "I am the Lead PM for a product that analyzes calls made by prison inmates and looks for predictors of criminal intent. its primarily used by police investigators and the FBI. One of the main features we have in the app is Link Analysis which basically lists out all the calls an inmate has made for a specific time period. This feature was built before my time. When I joined, the first thing I did was to implement analytics in the app. Looking at our numbers, I noticed that usage was less than 1%"See full answer

Pankhuri T. - "Clarifying Questions - Who are we referring to "friends" and "non-friends"? (My assumption is people who we follow and they follow us back are our FRIENDS and people who we just follow, recommendations by Facebook and all other content falls under NON-FRIENDS category, is it right?) Are we doing it putting a certain success metric in our mind? (Assuming none, just to make people's lives easy) Let's use a combination of GAME & 4W1H Framework here to evaluate this question **G"See full answer

John F. - "Around mid-2023, I was tasked with investigating the feasibility of selling access to our site to third-party vendors who wanted to use bots to automate processes for their clients. Some initial work had been done on this but it was very high-level and very little data or analysis had actually been done. When I was tasked with this the idea was to sell access to a special header that would allow vendors to by-pass our F5 Shape implementation, a bot defense tool. From a business and security pers"See full answer

Rick E. - " O(n) - characters in the string O(n) - stack def identify_adjacent(s: str, k: int) -> str: stack = [] n = len(s) for ch in s: if stack: topch, topcnt = stack[-1] if top_ch == ch: top_cnt += 1 stack[-1] = (ch, top_cnt) else: top_cnt = 1 stack.append((ch,1)) if top_cnt == k: stack.pop() else: stack.append"See full answer

Arunima S. - "I’ll first set the purpose of Instagram Reels Ads as a product: Instagram Reels connect to Meta’s mission of building meaningful connections and build community via connecting people through visual storytelling. It’s a popular product with typically Billions of active users. The business model of Meta is largely dependent on ad revenue and Ads on Reels shall primarily be poised to improve revenue for Instagram Reels and in turn Meta, and on secondary notes the upside could be in improving produc"See full answer

Alex N. - "Since question asks about pipeline. I assume the question is about metrics across many dimensions not just prediction Model performance. For the ML Model: I can use accuracy, precision, recall, F1 if it is classification model. In case it is regression model RMSE is good metric for many problems. Data: ML system needs good quality data. The system has to track missing data rate. Distribution of features, if there is no drift from original feature distributions during the training. Pipeline h"See full answer

Sahil A. - "Clarify: Feature for group messages and not individual messages The feature will be primarily used for Whatsapp and not other Meta products - Instagram, FB We are looking to improve engagement with this feature User: Pro users Users with moderate usage Users with no/little usage Prioritize - Users with no/little usage - as this user base could be greatly impacted Pain points: Too many messages are sent to the group and important messages are lost. Multiple message popp"See full answer

realkimchi - "Define: What is the Verified Badge Product? The Meta verified badge is a product displayed alongside a verified user’s profile across all Meta platforms. Mission: Why Build the Verified Badge Product? Trust and Authenticity: Meta's primary reason for introducing a Verified Badge is to enhance trust and authenticity across the platform. By confirming the identities of key figures and influencers, Meta can assure users that their interactions are with genuine profiles, no"See full answer

Chloe E. - "Here’s my general framework/formula/structure: Clarify - What do I need to know to make the question/prompt a little less ambiguous? What assumptions do I need to establish with the interviewer? Example: I would probably ask - Are we focused on professional/gig musicians who do music for a living? Or casual hobbyist musicians who make music for fun? Or I may want to know if I should focus on building on to a current Meta product like Instagram/FB Reels or think independently of th"See full answer

Neha P. - "The mini case was very much interviewer led and the questions asked were following: Tell the value proposition of Capital One Shopping to a senior executive who has recently joined Capital One What factors would you consider to expand Capital One Shopping? Technical Considerations? AB testing analysis - Interviewer shared AB testing results and asked for my recommendation Summarize"See full answer

Ramendra S. - "Step 1: Clarifying the Problem Scope Assumptions and basic system requirements: Cashless payments: The machine supports cashless payment methods like credit cards, mobile wallets, or NFC-based payments (e.g., Apple Pay, Google Pay). Multiple candy options: The machine offers different types of candy. Inventory management: The system tracks the stock of candy in real-time. User interface: A display screen for users to select the type of candy, make payments, an"See full answer

Anonymous Muskox - "Clarification Questions What does it mean by Next Gen Elevator? → Next Gen Elevator means Elevator using new technologies. Where is this Elevator situated? → Skyscrapers, Commercial Buildings, Residential Buildings or Elevators to Space? Assuming it’s Commercial Buildings. What is the Goal of Making Next Gen Elevators? Is it improving Safety? User Experience? Assuming it’s User Experience _Goal: To design an elevator using emerging technologies to improve user experience in a C"See full answer

Reno S. - "1. Requirements Analysis Functional Requirements Video streaming with multiple quality levels Content browsing and search Continue watching functionality Content recommendations Non-Functional Requirements Low latency video delivery (<2s startup time) High availability (99.99% uptime) Scalability to handle millions of concurrent streams API response time < 100ms 2. Microservices Architecture Core Microservices Content Service Content metadata mana"See full answer