Question 21

Your company is using WHILECARD tables to query data across multiple tables with similar names. The SQL statement is currently failing with the following error:
# Syntax error : Expected end of statement but got "-" at [4:11] SELECT age FROM bigquery-public-data.noaa_gsod.gsod WHERE age != 99 AND_TABLE_SUFFIX = `1929' ORDER BY age DESC Which table name will make the SQL statement work correctly?
  • Question 22

    MJTelco Case Study
    Company Overview
    MJTelco is a startup that plans to build networks in rapidly growing, underserved markets around the world. The company has patents for innovative optical communications hardware. Based on these patents, they can create many reliable, high-speed backbone links with inexpensive hardware.
    Company Background
    Founded by experienced telecom executives, MJTelco uses technologies originally developed to overcome communications challenges in space. Fundamental to their operation, they need to create a distributed data infrastructure that drives real-time analysis and incorporates machine learning to continuously optimize their topologies. Because their hardware is inexpensive, they plan to overdeploy the network allowing them to account for the impact of dynamic regional politics on location availability and cost.
    Their management and operations teams are situated all around the globe creating many-to-many relationship between data consumers and provides in their system. After careful consideration, they decided public cloud is the perfect environment to support their needs.
    Solution Concept
    MJTelco is running a successful proof-of-concept (PoC) project in its labs. They have two primary needs:
    * Scale and harden their PoC to support significantly more data flows generated when they ramp to more than
    50,000 installations.
    * Refine their machine-learning cycles to verify and improve the dynamic models they use to control topology definition.
    MJTelco will also use three separate operating environments - development/test, staging, and production - to meet the needs of running experiments, deploying new features, and serving production customers.
    Business Requirements
    * Scale up their production environment with minimal cost, instantiating resources when and where needed in an unpredictable, distributed telecom user community.
    * Ensure security of their proprietary data to protect their leading-edge machine learning and analysis.
    * Provide reliable and timely access to data for analysis from distributed research workers
    * Maintain isolated environments that support rapid iteration of their machine-learning models without affecting their customers.
    Technical Requirements
    * Ensure secure and efficient transport and storage of telemetry data
    * Rapidly scale instances to support between 10,000 and 100,000 data providers with multiple flows each.
    * Allow analysis and presentation against data tables tracking up to 2 years of data storing approximately
    100m records/day
    * Support rapid iteration of monitoring infrastructure focused on awareness of data pipeline problems both in telemetry flows and in production learning cycles.
    CEO Statement
    Our business model relies on our patents, analytics and dynamic machine learning. Our inexpensive hardware is organized to be highly reliable, which gives us cost advantages. We need to quickly stabilize our large distributed data pipelines to meet our reliability and capacity commitments.
    CTO Statement
    Our public cloud services must operate as advertised. We need resources that scale and keep our data secure.
    We also need environments in which our data scientists can carefully study and quickly adapt our models.
    Because we rely on automation to process our data, we also need our development and test environments to work as we iterate.
    CFO Statement
    The project is too large for us to maintain the hardware and software required for the data and analysis. Also, we cannot afford to staff an operations team to monitor so many data feeds, so we will rely on automation and infrastructure. Google Cloud's machine learning will allow our quantitative researchers to work on our high- value problems instead of problems with our data pipelines.
    MJTelco needs you to create a schema in Google Bigtable that will allow for the historical analysis of the last 2 years of records. Each record that comes in is sent every 15 minutes, and contains a unique identifier of the device and a data record. The most common query is for all the data for a given device for a given day. Which schema should you use?
  • Question 23

    You create a new report for your large team in Google Data Studio 360. The report uses Google BigQuery as its data source. It is company policy to ensure employees can view only the data associated with their region, so you create and populate a table for each region. You need to enforce the regional access policy to the data.
    Which two actions should you take? (Choose two.)
  • Question 24

    You have a job that you want to cancel. It is a streaming pipeline, and you want to ensure that any data that is in-flight is processed and written to the output. Which of the following commands can you use on the Dataflow monitoring console to stop the pipeline job?
  • Question 25

    Which of the following is NOT a valid use case to select HDD (hard disk drives) as the storage for Google Cloud Bigtable?