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Google GCP-DE Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Designing data processing systems20%- Data pipeline architecture design
  • 1. Scalable data ingestion design
    • 2. Batch vs streaming data processing selection
      - Storage and data modeling
      • 1. Data lake architecture on Google Cloud Storage
        • 2. Data warehouse design using BigQuery
          Topic 2: Building and operationalizing data processing systems30%- Data ingestion and transformation
          • 1. ETL/ELT workflows
            • 2. Pub/Sub streaming ingestion
              - Data pipeline implementation
              • 1. Dataflow pipeline development
                • 2. Dataproc and Spark-based processing
                  Topic 3: Maintaining and optimizing data and ML solutions20%- Machine learning integration
                  • 1. BigQuery ML usage
                    • 2. Vertex AI integration for pipelines
                      - Security and governance
                      • 1. IAM and access control
                        • 2. Data encryption and compliance
                          Topic 4: Operationalizing data and ML pipelines30%- Monitoring and troubleshooting
                          • 1. Performance optimization and debugging
                            • 2. Logging and observability
                              - Pipeline automation and orchestration
                              • 1. Scheduling and monitoring pipelines
                                • 2. Cloud Composer workflows

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                                  Google Data Engineer Sample Questions (Q29-Q34):

                                  NEW QUESTION # 29
                                  When a Cloud Bigtable node fails, is lost.

                                  Answer: A

                                  Explanation:
                                  A Cloud Bigtable table is sharded into blocks of contiguous rows, called tablets, to help balance the workload of queries. Tablets are stored on Colossus, Google's file system, in SSTable format. Each tablet is associated with a specific Cloud Bigtable node.
                                  Data is never stored in Cloud Bigtable nodes themselves; each node has pointers to a set of tablets that are stored on Colossus. As a result:
                                  Rebalancing tablets from one node to another is very fast, because the actual data is not copied. Cloud Bigtable simply updates the pointers for each node.
                                  Recovery from the failure of a Cloud Bigtable node is very fast, because only metadata needs to be migrated to the replacement node.
                                  When a Cloud Bigtable node fails, no data is lost Reference: https://cloud.google.com/bigtable/docs/overview


                                  NEW QUESTION # 30
                                  Which of these is not a supported method of putting data into a partitioned table?

                                  Answer: B

                                  Explanation:
                                  You cannot change an existing table into a partitioned table. You must create a partitioned table from scratch. Then you can either stream data into it every day and the data will automatically be put in the right partition, or you can load data into a specific partition by using "$YYYYMMDD" at the end of the table name. Reference: https://cloud.google.com/bigquery/docs/partitioned-tables


                                  NEW QUESTION # 31
                                  For the best possible performance, what is the recommended zone for your Compute Engine instance and Cloud Bigtable instance?

                                  Answer: B

                                  Explanation:
                                  It is recommended to create your Compute Engine instance in the same zone as your Cloud Bigtable instance for the best possible performance, If it's not possible to create a instance in the same zone, you should create your instance in another zone within the same region. For example, if your Cloud Bigtable instance is located in us-central1-b, you could create your instance in us-central1-f. This change may result in several milliseconds of additional latency for each Cloud Bigtable request.
                                  It is recommended to avoid creating your Compute Engine instance in a different region from your Cloud Bigtable instance, which can add hundreds of milliseconds of latency to each Cloud Bigtable request.
                                  Reference: https://cloud.google.com/bigtable/docs/creating-compute-instance


                                  NEW QUESTION # 32
                                  You need to choose a database for a new project that has the following requirements:
                                  Fully managed
                                  Able to automatically scale up
                                  Transactionally consistent
                                  Able to scale up to 6 TB
                                  Able to be queried using SQL Which database do you choose?

                                  Answer: A


                                  NEW QUESTION # 33
                                  Cloud Dataproc is a managed Apache Hadoop and Apache service.

                                  Answer: D

                                  Explanation:
                                  Cloud Dataproc is a managed Apache Spark and Apache Hadoop service that lets you use open source data tools for batch processing, querying, streaming, and machine learning.
                                  Reference: https://cloud.google.com/dataproc/docs/


                                  NEW QUESTION # 34
                                  ......

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