Apache Cassandra Online Test

Candidates Assessed

12468+

Organizations Served

122+

Apache Cassandra online test is the ideal test for recruiters and hiring managers to assess candidate's understanding of Apache Cassandra. Our test is useful for hiring Java Developer, Data Science Developer, and Full stack Developer. Our customers have reported that iMocha's Apache Cassandra online test has helped them to reduce hiring time by 45%.

Test Summary

The Apache Cassandra assessment test helps to screen the candidates who possess traits as follows:

1. Should have experience in data modelling in Cassandra
2. Must have experience with all phases of Software Development Lifecycle, including system analysis, design, coding, testing, debugging and documentation.
3. Hands-on experience with Apache Cassandra and Java
4. Understanding the Cassandra architecture concepts.
5. Proficient in Cassandra database, set up back-up/recovery processes, handle capacity planning, run maintenance tasks (e.g. upgrades).

Using powerful reporting of Apache Cassandra skills test, you can have a detailed analysis of the test results to help you make a better hiring decision and predict the candidate’s performance. To know about the candidate experience, we have introduced the new feature called candidate feedback module in our Apache Cassandra pre-employment test so that it will ensure you that the candidates are getting an excellent experience while attempting the test.

The online Apache Cassandra online test enables employers and recruiters to identify potential prospects by evaluating working skills and job readiness. For this reason, the emphasis is laid upon evaluating the knowledge of applied skills gained through real work experience, rather than theoretical knowledge.

The online Apache Cassandra test may contain MCQs (Multiple Choice Questions), MAQs (Multiple Answer Questions), Fill in the Blanks, Whiteboard Questions, Audio / Video Questions, AI-LogicBox (Pseudo-Coding Platform), Coding Simulators, True or False Questions, etc.

Test Duration: 20 minutes

No. of Questions: 10

Level of Expertise: Entry/Mid/Senior

Useful for hiring

Java Developer
Data Science Developer
Full stack Developer

Topics Covered

Tombstone expiration

iMocha’s Apache Cassandra online test helps recruiters and hiring managers to evaluate candidate’s understanding about tombstone lifetime attribute which is a time period after which the data gets deleted from the directory

Bloom filter

This test evaluates candidate’s knowledge about bloom filter which is a data structure that determines one of two possible states of data

Starved stables

Our online Apache Cassandra test checks candidate’s proficient knowledge about starved stables

Data caches

Our test assesses applicant’s ability to integrate caching and distributes cache data around the cluster

Replication

This Apache Cassandra assessment test helps recruiters and hiring managers to evaluate candidate’s understanding about data replication which stores data on multiple nodes to ensure reliability and fault tolerance

Consistency level

Our assessment helps to check candidate’s knowledge about the consistency level which defines the minimum number of Cassandra nodes that acknowledges a read or write operation before considered as successful operation

Commitlog sync

This test evaluates candidate’s ability to use commitlog record which keeps a record of every transaction and synchronizes with database

Snitch

Our Apache Cassandra skills test assesses candidate’s understanding about snitch job which determines which data centers should use to read data from and write data to

Selection Clause

Our test gauges candidate’s proficiency in using select clause which returns values from selected rows and columns

Nodetool

This Apache Cassandra pre-employment test helps to evaluate candidate’s understanding about Nodetool utility which is a command line interface that manages a cluster

Sample Questions

Choose from our 100,000+ question library or add your own questions to make powerful custom tests

Question types:

Multiple Option

Topic:

Tombstone expiration

Difficulty:

Hard

Q 1. While working in Cassandra, one of the nodes is unreachable. You get a hint of missing data writes in the node. If you want to avoid the expiration of the tombstone by repairing all the data within the token range, which repair method will you use?

Full repairs

Continued repairs

Incremental repairs

All of the options

Question types:

Multiple Option

Topic:

Cassandra Writes

Difficulty:

Hard

Q 2. While working with Cassandra, with peer-to-peer architecture every node in the cluster is eligible to receive read/write requests. Upon receiving the write request, columns would first be written on the commit log and then into the memtable onto the assigned node. Determine what alternatives will be adopted in case if the memory limit is exceeded for Cassandra inserts and updates?

The largest memtable will be flushed out on to disk

The smallest memtable will be flushed out on to disk

Last memtable will be flushed out on to disk

First memtable will be flushed out on to disk

You can customize this test by

Setting difficulty level of test

Choose easy, medium or hard questions from our skill libraries to assess candidates of different experience levels.

Combining multiple skills into one test

Add multiple skills in a single test to create an effective assessment. Assess multiple skills together.

Adding your own questions to the test

Add, edit or bulk upload your own coding questions, MCQ, whiteboarding questions & more.

Requesting a tailor-made test

Get a tailored assessment created with the help of our subject matter experts to ensure effective screening.

Related Skills

Trusted By

“Thanks to Customer Success Team of iMocha, they have shared the best practices of quick test creation & also helped us in training all our recruiters for various functionalities of the tool. Now my team of 25 recruiters has adopted this measure & it has done wonders for our clients.”