Why you should use Apache Cassandra online test?

The Apache Cassandra online test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects: At forstå de grundlæggende koncepter og principper for Apache Cassandra Udførelse af datamodellering og design af effektive datamodeller i Cassandra Skrivning af effektive CQL -forespørgsler til dataindhentning og manipulation Anvendelse af bedste praksis til datamodellering i Cassandra Forståelse og implementering af partitionerings- og distributionsstrategier i Cassandra Konfiguration og styring af datareplikation og konsistens i Cassandra -klynger At få kendskab til Cassandra -arkitekturen og den interne arbejde Identificering og implementering af ydelsesindstillingsteknikker i Cassandra Implementering af sikkerhedskopierings- og gendannelsesstrategier i Cassandra At sikre sikkerhed og godkendelse i Cassandra -applikationer

Apache Cassandra online test

About the test:

Den Apache Cassandra Online Test bruger scenariebaserede multiple-choice-spørgsmål til at evaluere kandidater om deres viden og forståelse af det distribuerede NOSQL-databasestyringssystem, Apache Cassandra. Testen sigter mod at vurdere kandidaternes færdigheder inden for områder som datamodellering, forespørgselssprog (CQL), klyngearkitektur, replikation, datakonsistens og præstationsoptimering. Det måler deres evne til at designe, implementere og styre cassandra -klynger i forskellige brugssager og deres forståelse af Cassandras sikkerheds- og skalerbarhedsfunktioner.

Covered skills:

Datamodel og DML -operationer
Datamodellering af bedste praksis
Data replikation og konsistens
Performance Tuning and Optimization
Sikkerhed og godkendelse

Cassandra Query Language (CQL)
Opdeling og distribution
Cassandra Arkitektur og internals
Backup og gendannelse

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9 reasons why

Adaface Apache Cassandra Test is the most accurate way to shortlist Cassandra -udviklers

Reason #1

Tests for on-the-job skills

The Apache Cassandra online test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

Evne til at designe effektive datamodeller i Apache Cassandra
Færdighed i Cassandra Query Language (CQL) til udførelse af datamanipulation
Forståelse af Cassandras arkitektur og internals
Kendskab til datapartitionerings- og distributionsstrategier i Cassandra
Fortrolighed med datareplikation og konsistens i Cassandra
Erfaring med ydelsesindstilling og optimeringsteknikker i Cassandra
Evne til at designe og implementere en sikkerhedskopierings- og gendannelsesstrategi i Cassandra
Forståelse af sikkerheds- og godkendelsesmekanismer i Cassandra
Kendskab til datamodellering af bedste praksis i Cassandra
Færdighed i håndtering af undtagelser og fejl i Cassandra
Forståelse af det grundlæggende i Apache Cassandra og dens brugssager
Bevidsthed om datamodelleringsteknikker til effektiv opbevaring og hentning
Fortrolighed med de forskellige CQL -datatyper og deres brug
Evne til at indstille cassandra -konfigurationer for optimal ydeevne
Kendskab til datafordelingsstrategier for høj tilgængelighed og fejltolerance
Forståelse af konsistensniveauer og deres indflydelse på dataintegritet

Reason #2

No trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

View sample questions

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface

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Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

Dette er kun en lille prøve fra vores bibliotek med 10.000+ spørgsmål. De faktiske spørgsmål om dette Apache Cassandra online test vil være ikke-gåbart.

🧐 Question
Easy Load/migrate data	Try practice test
Rinsha works at a private equity fund, where they have subscribed to feeds from several companies that track startups. The feeds are delivered in multiple formats such as CSV files, access to their RDBMS or NOSQL (Cassandra) database or daily incremental data. What should Rinsha use in Cassandra to load/ migrate data from one Cassandra cluster to another?
Medium Read Repair and Data Retrieval Mechanics Consistency Level Data Retrieval	Try practice test
You're a system architect troubleshooting read inconsistencies on a globally distributed Cassandra cluster. A developer informs you that sometimes when reading data, outdated information is retrieved. You decide to dive deeper into the read path. The application reads data using the following CQL: Given the known facts: 1. The cluster spans three data centers. 2. The replication factor is set as 3 for each data center. 3. The read must return only after fetching data from 2 nodes in each data center. 4. You want to utilize the read repair mechanism to address the inconsistencies. Which consistency level should replace the '?' in the `SELECT` statement to ensure the above requirements?
Medium Replication on nodes	Try practice test
The startup Ro is working at has a Cassandra cluster (Ring) with 7 nodes, and the admin set up a new KeySpace named CoralKeySpace. Ro wants to insert configuration data for their mobile application named CoralApp. The admin has told Ro that the default Replication Factor is 3 on this cluster for CoralKeySpace. Ro inserted 40 records in a table of CoralKeySpace. Which of the following apply? A: Before the insert query, Ro needs to execute a replicate-all command using cqlsh for the session, so that the data can be replicated on 3 nodes. B: After the insert query, Ro needs to execute a replicate-all command using cqlsh, so that the data can be replicated on 3 nodes. C: Ro does not need to do anything, replication is taken care of by Cassandra.

	🧐 Question	🔧 Skill
	Easy Load/migrate data	2 mins Cassandra	Try practice test
Rinsha works at a private equity fund, where they have subscribed to feeds from several companies that track startups. The feeds are delivered in multiple formats such as CSV files, access to their RDBMS or NOSQL (Cassandra) database or daily incremental data. What should Rinsha use in Cassandra to load/ migrate data from one Cassandra cluster to another?
	Medium Read Repair and Data Retrieval Mechanics Consistency Level Data Retrieval	2 mins Cassandra	Try practice test
You're a system architect troubleshooting read inconsistencies on a globally distributed Cassandra cluster. A developer informs you that sometimes when reading data, outdated information is retrieved. You decide to dive deeper into the read path. The application reads data using the following CQL: Given the known facts: 1. The cluster spans three data centers. 2. The replication factor is set as 3 for each data center. 3. The read must return only after fetching data from 2 nodes in each data center. 4. You want to utilize the read repair mechanism to address the inconsistencies. Which consistency level should replace the '?' in the `SELECT` statement to ensure the above requirements?
	Medium Replication on nodes	2 mins Cassandra	Try practice test
The startup Ro is working at has a Cassandra cluster (Ring) with 7 nodes, and the admin set up a new KeySpace named CoralKeySpace. Ro wants to insert configuration data for their mobile application named CoralApp. The admin has told Ro that the default Replication Factor is 3 on this cluster for CoralKeySpace. Ro inserted 40 records in a table of CoralKeySpace. Which of the following apply? A: Before the insert query, Ro needs to execute a replicate-all command using cqlsh for the session, so that the data can be replicated on 3 nodes. B: After the insert query, Ro needs to execute a replicate-all command using cqlsh, so that the data can be replicated on 3 nodes. C: Ro does not need to do anything, replication is taken care of by Cassandra.

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Load/migrate data	Cassandra	Easy	2 mins	Try practice test
Rinsha works at a private equity fund, where they have subscribed to feeds from several companies that track startups. The feeds are delivered in multiple formats such as CSV files, access to their RDBMS or NOSQL (Cassandra) database or daily incremental data. What should Rinsha use in Cassandra to load/ migrate data from one Cassandra cluster to another?
	Read Repair and Data Retrieval Mechanics Consistency Level Data Retrieval	Cassandra	Medium	2 mins	Try practice test
You're a system architect troubleshooting read inconsistencies on a globally distributed Cassandra cluster. A developer informs you that sometimes when reading data, outdated information is retrieved. You decide to dive deeper into the read path. The application reads data using the following CQL: Given the known facts: 1. The cluster spans three data centers. 2. The replication factor is set as 3 for each data center. 3. The read must return only after fetching data from 2 nodes in each data center. 4. You want to utilize the read repair mechanism to address the inconsistencies. Which consistency level should replace the '?' in the `SELECT` statement to ensure the above requirements?
	Replication on nodes	Cassandra	Medium	2 mins	Try practice test
The startup Ro is working at has a Cassandra cluster (Ring) with 7 nodes, and the admin set up a new KeySpace named CoralKeySpace. Ro wants to insert configuration data for their mobile application named CoralApp. The admin has told Ro that the default Replication Factor is 3 on this cluster for CoralKeySpace. Ro inserted 40 records in a table of CoralKeySpace. Which of the following apply? A: Before the insert query, Ro needs to execute a replicate-all command using cqlsh for the session, so that the data can be replicated on 3 nodes. B: After the insert query, Ro needs to execute a replicate-all command using cqlsh, so that the data can be replicated on 3 nodes. C: Ro does not need to do anything, replication is taken care of by Cassandra.

Reason #4

1200+ customers in 75 countries

Med Adaface var vi i stand til at optimere vores indledende screeningsproces med op mod 75 %, hvilket frigjorde kostbar tid for både ansættelsesledere og vores talentanskaffelsesteam!

Brandon Lee, Leder af mennesker, Love, Bonito

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Apache Cassandra online test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Apache Cassandra online test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

Reason #7

Detailed scorecards & benchmarks

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Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

Reason #9

Advanced Proctoring

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About the Apache Cassandra Assessment Test

Why you should use Pre-employment Apache Cassandra online test?

The Apache Cassandra online test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

At forstå de grundlæggende koncepter og principper for Apache Cassandra
Udførelse af datamodellering og design af effektive datamodeller i Cassandra
Skrivning af effektive CQL -forespørgsler til dataindhentning og manipulation
Anvendelse af bedste praksis til datamodellering i Cassandra
Forståelse og implementering af partitionerings- og distributionsstrategier i Cassandra
Konfiguration og styring af datareplikation og konsistens i Cassandra -klynger
At få kendskab til Cassandra -arkitekturen og den interne arbejde
Identificering og implementering af ydelsesindstillingsteknikker i Cassandra
Implementering af sikkerhedskopierings- og gendannelsesstrategier i Cassandra
At sikre sikkerhed og godkendelse i Cassandra -applikationer

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the Apache Cassandra online test?

cassandra forespørgselssprog (CQL)
cassandra forespørgselssprog (CQL) er et SQL-lignende sprog, der bruges til at interagere med Cassandra. Måling af denne færdighed i testen hjælper rekrutterere med at evaluere kandidaternes evne til at skrive effektive forespørgsler, hvilket er vigtigt for Cassandra -databasestyring.
Datamodellering Bedste praksis
Datamodellering Bedste praksis involverer at følge industrien -fremstillede retningslinjer for design af datamodeller i Cassandra. Denne færdighed er nødvendig for at evaluere, når den vurderer kandidaternes viden om optimeringsteknikker og strategier for at sikre høj ydeevne og skalerbarhed.
opdeling og distribution
Opdeling og distribution Henvis til processen med at dele Data på tværs af flere noder i en Cassandra -klynge. Inkludering af denne færdighed i testen giver rekrutterere mulighed for at vurdere kandidaternes forståelse af, hvordan data distribueres og gemmes, hvilket direkte påvirker ydelsen og fejltolerancen for en Cassandra -database.
Data -replikation og konsistens </H4> < P> Datareplikation og konsistens vedrører de mekanismer, der bruges i Cassandra til at replikere data på tværs af knudepunkter og opretholde datakonsistens. Evaluering af denne færdighed i testen hjælper rekrutterer til at måle kandidaternes viden om replikationsstrategier og deres forståelse af, hvordan konsistens opnås i en distribueret database Dæk den underliggende arkitektur og den indre funktion i Cassandra -databasen. Denne færdighed er vigtig at måle, da den demonstrerer kandidaternes fortrolighed med de forskellige komponenter og mekanismer, der muliggør Cassandras skalerbarhed og fejltolerance. </p> <h4> Performance Tuning and Optimization
Performance Tuning and Optimization involverer at identificere identificering og implementering af foranstaltninger for at forbedre ydelsen og effektiviteten af en Cassandra -database. Denne færdighed skal måles i testen for at evaluere kandidaternes evne til at optimere forespørgsler, håndtere store datasæt og finjustere Cassandra-konfigurationer for optimal ydelse.
sikkerhedskopiering og gendannelse
backup og gendannelse omfatter teknikkerne og praksis, der bruges til at sikkerhedskopiere og gendanne data i Cassandra. Måling af denne færdighed i testen giver rekrutterere mulighed for at bestemme kandidaternes færdigheder i databackupstrategier og deres evne til at gendanne data i tilfælde af fejl eller katastrofer.
Full list of covered topics
The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for Apache Cassandra online test to be based on.
Datamodel og DML -operationer
Cassandra Query Language (CQL)
Datamodellering af bedste praksis
Opdeling og distribution
Data replikation og konsistens
Cassandra Arkitektur og internals
Performance Tuning and Optimization
Backup og gendannelse
Sikkerhed og godkendelse
Keyspaces
Tabeller
Søjler
Primære nøgler
Sekundære indekser
Statiske kolonner
Samlinger
Klyngerkolonner
Sammensatte nøgler
Strategi for tidsvindue
Niveauet komprimeringsstrategi
STØRRELSE-STØRRELSE KOMPEKTION STRATEGE
TTL (tid til live)
Batchoperationer
Datamodellering til tidsserie-data
Datamodellering til relationelle data
Strategier for datafordeling
Cache og blomstrende filtre
Læs og skriv sti
Antydet aflevering
Sladderprotokol
Snitches
Reparation og anti-entropi
Præstationsovervågning og målinger
Forespørgseloptimering
Materialiserede synspunkter
Datakomprimering
Node -operationer
Backup og genskab
Datacenter -replikation
Kryptering og tilladelse
Autentificering og rollebaseret adgangskontrol
SSL/TLS -konfiguration
Komprimeringsstrategier
Memtable tuning
Indsamling af affald
Valg af opdeling af nøgle
Samtidighedskontrol
Datafordelingsskemaer
Konsistensniveauer
Lette transaktioner
Data -revision
Skemaudvikling
Ringhåndtering
Bevidsthed om datacenter
Tokenallokering

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What roles can I use the Apache Cassandra online test for?

Cassandra -udvikler
Cassandra Solutions Architect
Cassandra DBA
Cassandra Arkitekt
Cassandra -analytiker

How is the Apache Cassandra online test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

Design og optimering af datamodeller for høj tilgængelighed og fejltolerance
Forståelse og implementering af materialiserede synspunkter i Cassandra
Brug af sekundære indekser effektivt i Cassandra
Håndtering af komprimerings- og komprimeringsstrategier i Cassandra
Implementering af cache -strategier til præstationsoptimering i Cassandra
Overvågning og analyse af cassandra -præstationsmetrics
Implementering af distribueret batchbehandling med Cassandra
Brug af virtuelle noder til forbedring af klyngeskalerbarhed og fleksibilitet
Implementering af tidsserie-datamodellering i Cassandra
Integrering af Cassandra med andre værktøjer og teknologier til databehandling

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Ansættelseslederne mente, at de gennem de tekniske spørgsmål, som de stillede under panelinterviewene, var i stand til at fortælle, hvilke kandidater der havde bedre score og differentieret med dem, der ikke scorede så godt. De er meget tilfreds med kvaliteten af de kandidater, der er nomineret med Adaface-screeningen.

85%

Reduktion i screeningstid

Se den fulde casestudie

Apache Cassandra Hiring Test Ofte stillede spørgsmål

Kan jeg kombinere flere færdigheder i en brugerdefineret vurdering?

Ja absolut. Brugerdefinerede vurderinger er oprettet baseret på din jobbeskrivelse og vil omfatte spørgsmål om alle must-have-færdigheder, du angiver.

Har du nogen anti-cheating eller proctoring-funktioner på plads?

Vi har følgende anti-cheating-funktioner på plads:

Ikke-gåbare spørgsmål
IP Proctoring
Webproctoring
Webcam Proctoring
Detektion af plagiering
Sikker browser

Læs mere om Proctoring Features.

Hvordan fortolker jeg testresultater?

Den primære ting at huske på er, at en vurdering er et elimineringsværktøj, ikke et udvælgelsesværktøj. En færdighedsvurdering er optimeret for at hjælpe dig med at eliminere kandidater, der ikke er teknisk kvalificerede til rollen, den er ikke optimeret til at hjælpe dig med at finde den bedste kandidat til rollen. Så den ideelle måde at bruge en vurdering på er at beslutte en tærskelværdi (typisk 55%, vi hjælper dig med benchmark) og inviterer alle kandidater, der scorer over tærsklen for de næste interviewrunder.

Hvilken oplevelsesniveau kan jeg bruge denne test til?

Hver Adaface -vurdering tilpasses til din jobbeskrivelse/ ideel kandidatperson (vores emneeksperter vælger de rigtige spørgsmål til din vurdering fra vores bibliotek på 10000+ spørgsmål). Denne vurdering kan tilpasses til ethvert erfaringsniveau.

Får hver kandidat de samme spørgsmål?

Ja, det gør det meget lettere for dig at sammenligne kandidater. Valgmuligheder for MCQ -spørgsmål og rækkefølgen af spørgsmål randomiseres. Vi har anti-cheating/proctoring funktioner på plads. I vores virksomhedsplan har vi også muligheden for at oprette flere versioner af den samme vurdering med spørgsmål om lignende vanskelighedsniveauer.