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Databricks Associate-Developer-Apache-Spark-3.5 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Apache Spark Fundamentals | - RDD vs DataFrame vs Dataset concepts - Spark architecture and execution model |
| Topic 2: Spark SQL | - Window functions and aggregations - SQL queries on DataFrames and tables |
| Topic 3: Structured Streaming Basics | - Windowed aggregations in streaming - Streaming DataFrames |
| Topic 4: Data Processing and Performance | - Caching and persistence strategies - Joins and data partitioning - Optimization techniques |
| Topic 5: DataFrame API with PySpark | - DataFrame creation and schema management - Transformations and actions - Built-in functions and expressions |
| Topic 6: Data Ingestion and Storage | - Delta Lake basics - Reading and writing data (Parquet, JSON, CSV) |
Databricks Certified Associate Developer for Apache Spark 3.5 - Python Sample Questions:
1. How can a Spark developer ensure optimal resource utilization when running Spark jobs in Local Mode for testing?
Options:
A) Configure the application to run in cluster mode instead of local mode.
B) Increase the number of local threads based on the number of CPU cores.
C) Use the spark.dynamicAllocation.enabled property to scale resources dynamically.
D) Set the spark.executor.memory property to a large value.
2. A data scientist is working with a Spark DataFrame called customerDF that contains customer information. The DataFrame has a column named email with customer email addresses. The data scientist needs to split this column into username and domain parts.
Which code snippet splits the email column into username and domain columns?
A) customerDF.withColumn("username", substring_index(col("email"), "@", 1)) \
.withColumn("domain", substring_index(col("email"), "@", -1))
B) customerDF.select(
col("email").substr(0, 5).alias("username"),
col("email").substr(-5).alias("domain")
)
C) customerDF.select(
regexp_replace(col("email"), "@", "").alias("username"),
regexp_replace(col("email"), "@", "").alias("domain")
)
D) customerDF.withColumn("username", split(col("email"), "@").getItem(0)) \
.withColumn("domain", split(col("email"), "@").getItem(1))
3. 23 of 55.
A data scientist is working with a massive dataset that exceeds the memory capacity of a single machine. The data scientist is considering using Apache Spark™ instead of traditional single-machine languages like standard Python scripts.
Which two advantages does Apache Spark™ offer over a normal single-machine language in this scenario? (Choose 2 answers)
A) It processes data solely on disk storage, reducing the need for memory resources.
B) It has built-in fault tolerance, allowing it to recover seamlessly from node failures during computation.
C) It eliminates the need to write any code, automatically handling all data processing.
D) It requires specialized hardware to run, making it unsuitable for commodity hardware clusters.
E) It can distribute data processing tasks across a cluster of machines, enabling horizontal scalability.
4. Given:
python
CopyEdit
spark.sparkContext.setLogLevel("<LOG_LEVEL>")
Which set contains the suitable configuration settings for Spark driver LOG_LEVELs?
A) ERROR, WARN, TRACE, OFF
B) FATAL, NONE, INFO, DEBUG
C) ALL, DEBUG, FAIL, INFO
D) WARN, NONE, ERROR, FATAL
5. A Spark engineer is troubleshooting a Spark application that has been encountering out-of-memory errors during execution. By reviewing the Spark driver logs, the engineer notices multiple "GC overhead limit exceeded" messages.
Which action should the engineer take to resolve this issue?
A) Modify the Spark configuration to disable garbage collection
B) Cache large DataFrames to persist them in memory.
C) Increase the memory allocated to the Spark Driver.
D) Optimize the data processing logic by repartitioning the DataFrame.
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: D | Question # 3 Answer: B,E | Question # 4 Answer: A | Question # 5 Answer: C |



