PySpark Certification Practice Test 12

Principal Engineer and Architecture Scenarios

Question 1 of 30

📋 Multiple Choice

Question 221

A retail company currently performs full refreshes of a 10 TB sales table every night. Only 0.5% of records change daily. What is the BEST architectural improvement?

A. More Partitions

B. Full Reload Twice Daily

C. More Executors

✓

D. Incremental Processing

Answer

✅ D. Incremental Processing

Answered: 0 / 30

PySpark Certification Practice Test 12

Principal Engineer and Architecture Scenarios

Insightful Saga — Modern Data Engineering Certification Preparation

Question 221

A retail company currently performs full refreshes of a 10 TB sales table every night. Only 0.5% of records change daily. What is the BEST architectural improvement?

A. More Partitions

B. Full Reload Twice Daily

C. More Executors

D. Incremental Processing

Answer: ✅ D. Incremental Processing

Question 222

A banking company wants to track all customer address changes historically. What design pattern should be implemented?

A. Truncate and Load

B. SCD Type 1

C. SCD Type 2

D. Full Refresh

Answer: ✅ C. SCD Type 2

Question 223

A healthcare organization receives streaming patient-monitoring data. Business users require updates within seconds. Which architecture is most appropriate?

A. CSV Export

B. Daily Batch Processing

C. Full Refresh

D. Structured Streaming

Answer: ✅ D. Structured Streaming

Question 224

A telecom company has hundreds of pipelines calculating revenue differently. Executives no longer trust reports. What should be implemented first?

A. More Partitions

B. More Spark Jobs

C. More Clusters

D. Common Business Rules Framework

Answer: ✅ D

Question 225

A manufacturing organization wants: - Bronze Layer - Silver Layer - Gold Layer What architecture pattern is being adopted?

A. Kappa Architecture

B. Star Schema

C. Medallion Architecture

D. Lambda Architecture

Answer: ✅ C

Question 226

A company wants every pipeline execution to capture: - Start Time - End Time - Record Count - Status What should be implemented?

A. Broadcast Join

B. Z-Ordering

C. Audit Framework

D. Cache

Answer: ✅ C

Question 227

A retail company receives duplicate files frequently. Leadership wants prevention before data reaches reporting tables. Where should duplicate detection happen first?

A. Dashboard Layer

B. Gold Layer Only

C. Silver Layer

D. Reporting Tool

Answer: ✅ C

Question 228

A financial institution requires: - Reliability - Replay Capability - Historical Tracking Which design principle becomes critical?

A. Larger CSV Files

B. More Executors

C. More Notebooks

D. Data Lineage and Auditability

Answer: ✅ D

Question 229

A logistics company wants a single reusable framework used by all teams. What should architects prioritize?

A. Standardized ETL Framework

B. Separate Coding Styles

C. Independent Development

D. Separate Business Logic

Answer: ✅ A

Question 230

A PySpark platform serves: - BI Teams - Data Science - Reporting - AI Applications What principle is most important?

A. Local Metrics

B. Shared Trusted Data Foundation

C. Team-Specific Data Copies

D. Data Duplication

Answer: ✅ B

Question 231

A company must process 50 TB daily today and 500 TB within three years. What architectural principle is MOST important?

A. Fixed Clusters

B. Single Node Processing

C. Scalability by Design

D. Static Configuration

Answer: ✅ C

Question 232

A newly hired Architect wants to identify downstream impact before changing schemas. What capability should be prioritized?

A. Broadcast Hints

B. Data Lineage

C. Cache Management

D. Repartitioning

Answer: ✅ B

Question 233

A retail company wants trustworthy analytics datasets available to all departments. What concept best fits?

A. Manual Requests

B. Excel Exports

C. Data Products

D. Independent Copies

Answer: ✅ C

Question 234

A healthcare company requires validation of: - Mandatory Columns - Null Checks - Reference Integrity What should be embedded into ETL?

A. More Workers

B. More Partitions

C. Data Quality Framework

D. More Joins

Answer: ✅ C

Question 235

A banking company processes CDC events. Operations include: ```text Insert Update Delete ``` What design capability is required?

A. Broadcast Join

B. Cache

C. Merge/Upsert Framework

D. Full Refresh

Answer: ✅ C

Question 236

A global telecom company struggles with ownership confusion. Incidents take hours to resolve. What governance improvement is needed?

A. More Notebooks

B. Defined Data Ownership

C. More Executors

D. More Storage

Answer: ✅ B

Question 237

A company wants pipeline failures automatically reported before users notice. What capability becomes critical?

A. Repartition

B. Monitoring and Alerting

C. Cache

D. Union

Answer: ✅ B

Question 238

A retail company wants to reduce cloud costs while maintaining performance. What should engineers monitor?

A. Column Count

B. File Names

C. Cost Attribution and Resource Usage

D. Notebook Count

Answer: ✅ C

Question 239

A company frequently acquires other organizations. What architecture principle reduces onboarding effort?

A. Separate Standards

B. Different Schemas Per Team

C. Manual Mapping Only

D. Standardized Data Models

Answer: ✅ D

Question 240

A platform team wants new developers onboarded quickly. What investment provides the biggest benefit?

A. More Views

B. More Databases

C. More Clusters

D. Documentation and Reusable Templates

Answer: ✅ D

Question 241

A company wants all production deployments tracked and auditable. What should exist?

A. Local Scripts

B. Manual Production Changes

C. CI/CD and Deployment Audit Trail

D. Shared Credentials

Answer: ✅ C

Question 242

A PySpark environment supports hundreds of engineers. Executives want consistent coding practices. What should be established?

A. Engineering Standards

B. Personal Preferences

C. Separate Rules

D. Independent Frameworks

Answer: ✅ A

Question 243

A business wants trusted datasets discoverable without IT tickets. What capability should be introduced?

A. Local Documentation

B. Data Catalog

C. Manual Requests

D. Shared Spreadsheets

Answer: ✅ B

Question 244

A streaming pipeline processes financial transactions. Business requires: ```text Exactly Once Processing ``` What should architects prioritize?

A. Larger Files

B. More Partitions

C. More Columns

D. Reliable Streaming Design

Answer: ✅ D

Question 245

A company wants to move from reactive support to proactive operations. What capability should mature first?

A. Cache Usage

B. Observability

C. show()

D. Distinct Logic

Answer: ✅ B

Question 246

A platform serves: - Analytics - AI - Operations - Compliance Teams What architectural principle dominates?

A. Independent Copies

B. Governed Shared Platform

C. Manual Data Exchange

D. Team Isolation

Answer: ✅ B

Question 247

A global organization wants architecture decisions reviewed before implementation. What process should exist?

A. Architecture Review Board

B. Open Deployments

C. Manual Emails

D. Direct Production Changes

Answer: ✅ A

Question 248

A Principal Engineer wants to reduce dependency on tribal knowledge. What should improve?

A. File Naming

B. Cache Usage

C. Cluster Size

D. Knowledge Management

Answer: ✅ D

Question 249

A company wants success measured by outcomes rather than technical metrics alone. What should leadership define?

A. Partition Counts

B. Notebook Counts

C. Executor Counts

D. Business-Focused KPIs

Answer: ✅ D

Question 250

Spark UI shows: ```text Shuffle Read = Extremely High ``` during a join. What should be investigated first?

A. Variable Names

B. Join Strategy

C. Comments

D. Notebook Title

Answer: ✅ B