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Google Professional-Data-Engineer certification is a globally recognized credential that demonstrates your ability to design, build, and maintain efficient data processing systems on the Google Cloud Platform. Google Certified Professional Data Engineer Exam certification exam covers a wide range of topics, such as designing data processing systems, building and maintaining data structures and databases, analyzing data, and optimizing data processing systems for performance and cost-effectiveness.

Google Certified Professional Data Engineer Exam Sample Questions (Q332-Q337):

NEW QUESTION # 332
What are two methods that can be used to denormalize tables in BigQuery?

A. 1) Split table into multiple tables; 2) Use a partitioned table
B. 1) Use a partitioned table; 2) Join tables into one table
C. 1) Use nested repeated fields; 2) Use a partitioned table
D. 1) Join tables into one table; 2) Use nested repeated fields

Answer: D

Explanation:
The conventional method of denormalizing data involves simply writing a fact, along with all its dimensions, into a flat table structure. For example, if you are dealing with sales transactions, you would write each individual fact to a record, along with the accompanying dimensions such as order and customer information.
The other method for denormalizing data takes advantage of BigQuery's native support for nested and repeated structures in JSON or Avro input data. Expressing records using nested and repeated structures can provide a more natural representation of the underlying data. In the case of the sales order, the outer part of a JSON structure would contain the order and customer information, and the inner part of the structure would contain the individual line items of the order, which would be represented as nested, repeated elements.
Reference: https://cloud.google.com/solutions/bigquery-data-
warehouse#denormalizing_data

NEW QUESTION # 333
You work for a shipping company that uses handheld scanners to read shipping labels. Your company has strict data privacy standards that require scanners to only transmit recipients' personally identifiable information (PII) to analytics systems, which violates user privacy rules. You want to quickly build a scalable solution using cloud-native managed services to prevent exposure of PII to the analytics systems. What should you do?

A. Use Stackdriver logging to analyze the data passed through the total pipeline to identify transactions that may contain sensitive information.
B. Create an authorized view in BigQuery to restrict access to tables with sensitive data.
C. Install a third-party data validation tool on Compute Engine virtual machines to check the incoming data for sensitive information.
D. Build a Cloud Function that reads the topics and makes a call to the Cloud Data Loss Prevention API. Use the tagging and confidence levels to either pass or quarantine the data in a bucket for review.

Answer: D

NEW QUESTION # 334
Which of the following is NOT a valid use case to select HDD (hard disk drives) as the storage for Google Cloud Bigtable?

A. You expect to store at least 10 TB of data.
B. You will mostly run batch workloads with scans and writes, rather than frequently executing random reads of a small number of rows.
C. You need to integrate with Google BigQuery.
D. You will not use the data to back a user-facing or latency-sensitive application.

Answer: C

Explanation:
For example, if you plan to store extensive historical data for a large number of remote- sensing devices and then use the data to generate daily reports, the cost savings for HDD storage may justify the performance tradeoff. On the other hand, if you plan to use the data to display a real-time dashboard, it probably would not make sense to use HDD storage-reads would be much more frequent in this case, and reads are much slower with HDD storage.
Reference: https://cloud.google.com/bigtable/docs/choosing-ssd-hdd

NEW QUESTION # 335
Your company's on-premises Apache Hadoop servers are approaching end-of-life, and IT has decided to migrate the cluster to Google Cloud Dataproc. A like-for-like migration of the cluster would require 50 TB of Google Persistent Disk per node. The CIO is concerned about the cost of using that much block storage.
You want to minimize the storage cost of the migration. What should you do?

A. Migrate some of the cold data into Google Cloud Storage, and keep only the hot data in Persistent Disk.
B. Use preemptible virtual machines (VMs) for the Cloud Dataproc cluster.
C. Tune the Cloud Dataproc cluster so that there is just enough disk for all data.
D. Put the data into Google Cloud Storage.

Answer: B

NEW QUESTION # 336
Your company operates in three domains: airlines, hotels, and ride-hailing services. Each domain has two teams: analytics and data science, which create data assets in BigQuery with the help of a central data platform team. However, as each domain is evolving rapidly, the central data platform team is becoming a bottleneck. This is causing delays in deriving insights from data, and resulting in stale data when pipelines are not kept up to date. You need to design a data mesh architecture by using Dataplex to eliminate the bottleneck. What should you do?

A. 1 Create one lake for each domain. Inside each lake, create one zone for each team.
2. Attach each of the BigQuery datasets created by the individual teams as assets to the respective zone.
3. Direct each domain to manage their own lake's data assets.
B. 1 Create one lake for each team. Inside each lake, create one zone for each domain.
2. Attach each to the BigQuory datasets created by the individual teams as assets to the respective zone.
3. Direct each domain to manage their own zone's data assets.
C. 1 Create one lake for each domain. Inside each lake, create one zone for each team.
2. Attach each of the BigQuery datasets created by the individual teams as assets to the respective zone.
3. Have the central data platform team manage all lakes' data assets.
D. 1. Create one lake for each team. Inside each lake, create one zone for each domain.
2. Attach each of the BigQuery datasets created by the individual teams as assets to the respective zone.
3. Have the central data platform team manage all zones' data assets.

Answer: B

Explanation:
To design a data mesh architecture using Dataplex to eliminate bottlenecks caused by a central data platform team, consider the following:
Data Mesh Architecture:
Data mesh promotes a decentralized approach where domain teams manage their own data pipelines and assets, increasing agility and reducing bottlenecks.
Dataplex Lakes and Zones:
Lakes in Dataplex are logical containers for managing data at scale, and zones are subdivisions within lakes for organizing data based on domains, teams, or other criteria.
Domain and Team Management:
By creating a lake for each team and zones for each domain, each team can independently manage their data assets without relying on the central data platform team.
This setup aligns with the principles of data mesh, promoting ownership and reducing delays in data processing and insights.
Implementation Steps:
Create Lakes and Zones:
Create separate lakes in Dataplex for each team (analytics and data science).
Within each lake, create zones for the different domains (airlines, hotels, ride-hailing).
Attach BigQuery Datasets:
Attach the BigQuery datasets created by the respective teams as assets to their corresponding zones.
Decentralized Management:
Allow each domain to manage their own zone's data assets, providing them with the autonomy to update and maintain their pipelines without depending on the central team.
Reference:
Dataplex Documentation
BigQuery Documentation
Data Mesh Principles

NEW QUESTION # 337
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