http://www.cloudera.com/content/www/en-us/training/certification/cca-spark.html
CCA175 is a hands-on, practical exam using Cloudera technologies. Each user is given their own CDH5 (currently 5.3.2) cluster pre-loaded with Spark, Impala, Crunch, Hive, Pig, Sqoop, Kafka, Flume, Kite, Hue, Oozie, DataFu, and many others (See a full list). In addition the cluster also comes with Python (2.6 and 3.4), Perl 5.10, Elephant Bird, Cascading 2.6, Brickhouse, Hive Swarm, Scala 2.11, Scalding, IDEA, Sublime, Eclipse, and NetBeans.
Since these are developer questions, the particular version of CDH should not matter much. The Quickstart VM should be almost identical to the cluster environment.
The cluster supports Python 2.6, 2.7, and 3.4