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. Incremental Processing

B. More Executors

C. More Partitions

D. Full Reload Twice Daily

Answer

✅ A. 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. Incremental Processing

B. More Executors

C. More Partitions

D. Full Reload Twice Daily

Answer: ✅ A. Incremental Processing

Question 222

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

A. SCD Type 2

B. SCD Type 1

C. Truncate and Load

D. Full Refresh

Answer: ✅ A. 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. Structured Streaming

B. Daily Batch Processing

C. Full Refresh

D. CSV Export

Answer: ✅ A. 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. Common Business Rules Framework

B. More Clusters

C. More Partitions

D. More Spark Jobs

Answer: ✅ A

Question 225

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

A. Medallion Architecture

B. Lambda Architecture

C. Kappa Architecture

D. Star Schema

Answer: ✅ A

Question 226

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

A. Audit Framework

B. Broadcast Join

C. Cache

D. Z-Ordering

Answer: ✅ A

Question 227

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

A. Silver Layer

B. Gold Layer Only

C. Dashboard Layer

D. Reporting Tool

Answer: ✅ A

Question 228

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

A. Data Lineage and Auditability

B. More Executors

C. More Notebooks

D. Larger CSV Files

Answer: ✅ A

Question 229

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

A. Standardized ETL Framework

B. Independent Development

C. Separate Coding Styles

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. Shared Trusted Data Foundation

B. Data Duplication

C. Team-Specific Data Copies

D. Local Metrics

Answer: ✅ A

Question 231

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

A. Scalability by Design

B. Static Configuration

C. Single Node Processing

D. Fixed Clusters

Answer: ✅ A

Question 232

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

A. Data Lineage

B. Cache Management

C. Repartitioning

D. Broadcast Hints

Answer: ✅ A

Question 233

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

A. Data Products

B. Excel Exports

C. Independent Copies

D. Manual Requests

Answer: ✅ A

Question 234

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

A. Data Quality Framework

B. More Workers

C. More Partitions

D. More Joins

Answer: ✅ A

Question 235

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

A. Merge/Upsert Framework

B. Full Refresh

C. Broadcast Join

D. Cache

Answer: ✅ A

Question 236

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

A. Defined Data Ownership

B. More Executors

C. More Storage

D. More Notebooks

Answer: ✅ A

Question 237

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

A. Monitoring and Alerting

B. Repartition

C. Union

D. Cache

Answer: ✅ A

Question 238

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

A. Cost Attribution and Resource Usage

B. Notebook Count

C. Column Count

D. File Names

Answer: ✅ A

Question 239

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

A. Standardized Data Models

B. Separate Standards

C. Different Schemas Per Team

D. Manual Mapping Only

Answer: ✅ A

Question 240

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

A. Documentation and Reusable Templates

B. More Clusters

C. More Databases

D. More Views

Answer: ✅ A

Question 241

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

A. CI/CD and Deployment Audit Trail

B. Manual Production Changes

C. Shared Credentials

D. Local Scripts

Answer: ✅ A

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. Independent Frameworks

D. Separate Rules

Answer: ✅ A

Question 243

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

A. Data Catalog

B. Shared Spreadsheets

C. Manual Requests

D. Local Documentation

Answer: ✅ A

Question 244

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

A. Reliable Streaming Design

B. More Partitions

C. More Columns

D. Larger Files

Answer: ✅ A

Question 245

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

A. Observability

B. Cache Usage

C. Distinct Logic

D. show()

Answer: ✅ A

Question 246

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

A. Governed Shared Platform

B. Independent Copies

C. Manual Data Exchange

D. Team Isolation

Answer: ✅ A

Question 247

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

A. Architecture Review Board

B. Open Deployments

C. Direct Production Changes

D. Manual Emails

Answer: ✅ A

Question 248

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

A. Knowledge Management

B. Cluster Size

C. Cache Usage

D. File Naming

Answer: ✅ A

Question 249

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

A. Business-Focused KPIs

B. Partition Counts

C. Executor Counts

D. Notebook Counts

Answer: ✅ A

Question 250

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

A. Join Strategy

B. Variable Names

C. Comments

D. Notebook Title

Answer: ✅ A