Question 176

You have created several preemptible Linux virtual machine instances using Google Compute Engine. You want to properly shut down your application before the virtual machines are preempted. What should you do?
  • Question 177

    You want to optimize the performance of an accurate, real-time, weather-charting application. The data comes from 50,000 sensors sending 10 readings a second, in the format of a timestamp and sensor reading. Where should you store the data?
  • Question 178

    Case Study: 1 - Mountkirk Games Case Study
    Company Overview
    Mountkirk Games makes online, session-based. multiplayer games for the most popular mobile platforms.
    Company Background
    Mountkirk Games builds all of their games with some server-side integration and has historically used cloud providers to lease physical servers. A few of their games were more popular than expected, and they had problems scaling their application servers, MySQL databases, and analytics tools.
    Mountkirk's current model is to write game statistics to files and send them through an ETL tool that loads them into a centralized MySQL database for reporting.
    Solution Concept
    Mountkirk Games is building a new game, which they expect to be very popular. They plan to deploy the game's backend on Google Compute Engine so they can capture streaming metrics, run intensive analytics and take advantage of its autoscaling server environment and integrate with a managed NoSQL database.
    Technical Requirements
    Requirements for Game Backend Platform
    1. Dynamically scale up or down based on game activity.
    2. Connect to a managed NoSQL database service.
    3. Run customized Linx distro.
    Requirements for Game Analytics Platform
    1. Dynamically scale up or down based on game activity.
    2. Process incoming data on the fly directly from the game servers.
    3. Process data that arrives late because of slow mobile networks.
    4. Allow SQL queries to access at least 10 TB of historical data.
    5. Process files that are regularly uploaded by users' mobile devices.
    6. Use only fully managed services
    CEO Statement
    Our last successful game did not scale well with our previous cloud provider, resuming in lower user adoption and affecting the game's reputation. Our investors want more key performance indicators (KPIs) to evaluate the speed and stability of the game, as well as other metrics that provide deeper insight into usage patterns so we can adapt the gams to target users.
    CTO Statement
    Our current technology stack cannot provide the scale we need, so we want to replace MySQL and move to an environment that provides autoscaling, low latency load balancing, and frees us up from managing physical servers.
    CFO Statement
    We are not capturing enough user demographic data usage metrics, and other KPIs. As a result, we do not engage the right users. We are not confident that our marketing is targeting the right users, and we are not selling enough premium Blast-Ups inside the games, which dramatically impacts our revenue.
    For this question, refer to the Mountkirk Games case study Mountkirk Games needs to create a repeatable and configurable mechanism for deploying isolated application environments.
    Developers and testers can access each other's environments and resources, but they cannot access staging or production resources. The staging environment needs access to some services from production.
    What should you do to isolate development environments from staging and production?
  • Question 179

    For this question, refer to the Mountkirk Games case study. You need to analyze and define the technical
    architecture for the database workloads for your company, Mountkirk Games. Considering the business
    and technical requirements, what should you do?
  • Question 180

    You are working in a highly secured environment where public Internet access from the Compute Engine VMs is not allowed. You do not yet have a VPN connection to access an on-premises file server. You need to install specific software on a Compute Engine instance. How should you install the software?