Attempt 1: 1. System Design (15 mins): Q1. How can we reduce server farm costs for a mobile app that animates children's drawings and downloads interactive environments? Q2. How can we reduce the impact of unreliable third-party APIs with frequent outages on a sports statistics web service? Q3. What information is required to estimate next year's resource costs for a popular video-sharing app? 2. Coding Questions (45 mins): Q1. A 2-D grid that consists of '0' and '+'. '+' means impassable and '0' means passable. Return the rows and columns indices that are completely passable (all 0's). Q2. Modified version of Q1. You are now given a starting cell, which is on one corner of the grid. You can travel in all 4 directions of cells that are passable. You have to reach any other passable cell that is on the corner of the grid, which has the minimum distance from the starting cell. Return the coordinates of the destination cell. Return -1 if not possible. Attempt 2: 1. System Design (15 mins): Q1. How would you evaluate the advantages and disadvantages of using multiple servers versus a single dedicated server for hosting a music streaming application that supports various playlists for different activities? Q2. What concerns might arise when designing a payment system for entertainment machines, where players use preloaded game cards and can recharge through cash or credit card, especially given plans to install the system on approximately 125,000 machines next year? 2. Coding Questions (45 mins): Q1. You are playing a board game (1-D array) where the player moves by rolling a die with the number of sides given and is allowed to roll it once. You are also given a list of teleporters that move the player from one square to another. The starting and ending squares are given as well. Return a distinct list of positions where the player can potentially jump to. Q2. Modified version of Q1. Players move by rolling a die as many times as they wish to, and the goal is to determine if they can reach the last square on the board from a given starting position.