Why you should use IBM DB2 Database Online Test?

The IBM DB2 -databasetest 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: Kendskab til IBM DB2 -database og dens funktioner Forståelse af SQL Basics og dets syntaks Evne til at designe databaser og skabe passende tabelstrukturer Færdighed i datamanipulation ved hjælp af SQL -forespørgsler Erfaring med at oprette tabeller og definere indekser og begrænsninger Forståelse af sammenføjninger og underspil for dataindhentning Kendskab til lagrede procedurer og deres implementering Fortrolighed med triggere og deres brug i databaseoperationer Forståelse af samtidighed og låsemekanismer i DB2 Evne til at udføre præstationstuning til optimal databaseoperation

IBM DB2 Database Online Test

About the test:

Den IBM DB2 Online Test bruger scenariebaserede multiple choice-spørgsmål til at evaluere kandidater om deres tekniske viden og praktiske færdigheder relateret til IBM DB2 inklusive emner såsom databasedesign, databaseadministration, databasesikkerhed, databaseydelse og database-sikkerhedskopi og gendannelse. Testen sigter mod at bestemme kandidaternes evne til at designe, udvikle og styre effektive og effektive IBM DB2 -databaser, der opfylder forretningskrav, samt deres fortrolighed med IBM DB2 bedste praksis, designmønstre og teknikker.

Covered skills:

SQL Basics
Datamanipulation
Indekser og begrænsninger
Lagrede procedurer
Samtidighed og låsning
Backup og gendannelse

Databasedesign
Tabeloprettelse
Slutter sig til og underkører
Triggers
Performance Tuning

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9 reasons why

Adaface IBM DB2 Database Test is the most accurate way to shortlist DB2 -administrators

Reason #1

Tests for on-the-job skills

The IBM DB2 Database 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:

Forståelse af de grundlæggende elementer i IBM DB2 -database
Skrivning af SQL -forespørgsler til dataindhentning og manipulation
Design af effektive og normaliserede databaser
Oprettelse af tabeller med passende datatyper og begrænsninger
Arbejde med indekser og begrænsninger for at optimere ydeevnen
Udførelse af sammenføjninger og underkoblinger for at hente data fra flere tabeller
Implementering af lagrede procedurer for komplekse databaseoperationer
Implementering af triggere til at håndhæve dataintegritet
Forståelse af samtidighed og låsemekanismer i DB2
Identificering og løsning af præstationsproblemer i DB2
Implementering af sikkerhedskopierings- og gendannelsesstrategier i DB2

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 IBM DB2 -databasetest vil være ikke-gåbart.

🧐 Question
Medium Database Performance Tuning and Data Consistency Database Performance Tuning Transaction Management Locking Mechanisms	Solve
Consider the following DB2 database scenario. You are managing a stock trading platform that uses a DB2 database to track user transactions and market prices. The database has two tables, Users and Stocks. A user transaction to buy a stock is a two-step process: 1. Decrease the user's balance in the Users table. 2. Increase the quantity of the stock owned by the user in the Stocks table. Both these steps need to be performed atomically to maintain data consistency. Recently, with the increase in the volume of transactions, you are experiencing performance issues. Additionally, you have observed that during peak trading hours, a large number of user transactions are getting blocked, leading to user dissatisfaction. Which of the following strategies would BEST address the performance and blocking issues, while ensuring data consistency? A: Implement an optimistic concurrency control mechanism. B: Reduce the transaction isolation level to READ UNCOMMITTED. C: Break the transaction into two separate transactions D: Increase the database's buffer pool size. E: Implement row-level locking.
Medium DB2 Isolation Levels and Data Consistency Revisited Transactions Isolation Levels Data Consistency	Solve
Consider two users executing the following transactions concurrently on DB2: Transaction 1 (User A): Transaction 2 (User B): Table1 has thousands of records, and the value 'Value1' for Column1 is not unique in Table1. Both transactions are executed almost simultaneously with Transaction 2 executed a bit earlier. Considering the isolation levels set for the transactions, which of the following is the potential data inconsistency issue that might arise? A: A deadlock situation may occur. B: Transaction 1 will wait indefinitely for Transaction 2 to commit. C: Both transactions might update the same record leading to a lost update. D: Transaction 1 can experience a dirty read due to the changes made by Transaction 2.
Medium Optimizing Query Performance Indexing Query Optimization	Solve
You are managing a DB2 database which includes a table named `ORDERS`. The `ORDERS` table has a large volume of data and contains the following columns: `OrderID`, `CustomerID`, `OrderDate`, `ProductID`, `Quantity`. One of the frequently executed queries on the `ORDERS` table is: You are asked to optimize this query without changing its structure or the table schema. Which of the following strategies would MOST likely improve the performance of this query? A: Create a HASH index on `CustomerID` and `OrderDate`. B: Create a CLUSTERED index on `CustomerID` and `OrderDate`. C: Create a NONCLUSTERED index on `CustomerID` and `OrderDate`. D: Create a CLUSTERED index on `OrderID`. E: Create a NONCLUSTERED index on `OrderID`.
Medium Transaction Handling and Error Recovery in DB2 SQL Programming Transactions Error Handling	Solve
Consider the following pseudocode in an IBM DB2 environment: This stored procedure is used to update the inventory of a particular item. If the `NewQuantity` input parameter is negative, the procedure signals an exception. There's also a handler declared for exceptions, which logs an error message. Given this scenario, if an error occurs during the UPDATE statement, which of the following will happen? A: The update operation will fail, an error message will be logged, and the quantity in the inventory will remain unchanged. B: The update operation will succeed, no error message will be logged, and the quantity in the inventory will be updated. C: The update operation will fail, an error message will be logged, but the quantity in the inventory will still be updated. D: The update operation will fail, no error message will be logged, and the quantity in the inventory will remain unchanged. E: The update operation will succeed, an error message will be logged, but the quantity in the inventory will still be updated.

	🧐 Question	🔧 Skill
	Medium Database Performance Tuning and Data Consistency Database Performance Tuning Transaction Management Locking Mechanisms	3 mins IBM DB2	Solve
Consider the following DB2 database scenario. You are managing a stock trading platform that uses a DB2 database to track user transactions and market prices. The database has two tables, Users and Stocks. A user transaction to buy a stock is a two-step process: 1. Decrease the user's balance in the Users table. 2. Increase the quantity of the stock owned by the user in the Stocks table. Both these steps need to be performed atomically to maintain data consistency. Recently, with the increase in the volume of transactions, you are experiencing performance issues. Additionally, you have observed that during peak trading hours, a large number of user transactions are getting blocked, leading to user dissatisfaction. Which of the following strategies would BEST address the performance and blocking issues, while ensuring data consistency? A: Implement an optimistic concurrency control mechanism. B: Reduce the transaction isolation level to READ UNCOMMITTED. C: Break the transaction into two separate transactions D: Increase the database's buffer pool size. E: Implement row-level locking.
	Medium DB2 Isolation Levels and Data Consistency Revisited Transactions Isolation Levels Data Consistency	2 mins IBM DB2	Solve
Consider two users executing the following transactions concurrently on DB2: Transaction 1 (User A): Transaction 2 (User B): Table1 has thousands of records, and the value 'Value1' for Column1 is not unique in Table1. Both transactions are executed almost simultaneously with Transaction 2 executed a bit earlier. Considering the isolation levels set for the transactions, which of the following is the potential data inconsistency issue that might arise? A: A deadlock situation may occur. B: Transaction 1 will wait indefinitely for Transaction 2 to commit. C: Both transactions might update the same record leading to a lost update. D: Transaction 1 can experience a dirty read due to the changes made by Transaction 2.
	Medium Optimizing Query Performance Indexing Query Optimization	2 mins IBM DB2	Solve
You are managing a DB2 database which includes a table named `ORDERS`. The `ORDERS` table has a large volume of data and contains the following columns: `OrderID`, `CustomerID`, `OrderDate`, `ProductID`, `Quantity`. One of the frequently executed queries on the `ORDERS` table is: You are asked to optimize this query without changing its structure or the table schema. Which of the following strategies would MOST likely improve the performance of this query? A: Create a HASH index on `CustomerID` and `OrderDate`. B: Create a CLUSTERED index on `CustomerID` and `OrderDate`. C: Create a NONCLUSTERED index on `CustomerID` and `OrderDate`. D: Create a CLUSTERED index on `OrderID`. E: Create a NONCLUSTERED index on `OrderID`.
	Medium Transaction Handling and Error Recovery in DB2 SQL Programming Transactions Error Handling	3 mins IBM DB2	Solve
Consider the following pseudocode in an IBM DB2 environment: This stored procedure is used to update the inventory of a particular item. If the `NewQuantity` input parameter is negative, the procedure signals an exception. There's also a handler declared for exceptions, which logs an error message. Given this scenario, if an error occurs during the UPDATE statement, which of the following will happen? A: The update operation will fail, an error message will be logged, and the quantity in the inventory will remain unchanged. B: The update operation will succeed, no error message will be logged, and the quantity in the inventory will be updated. C: The update operation will fail, an error message will be logged, but the quantity in the inventory will still be updated. D: The update operation will fail, no error message will be logged, and the quantity in the inventory will remain unchanged. E: The update operation will succeed, an error message will be logged, but the quantity in the inventory will still be updated.

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Database Performance Tuning and Data Consistency Database Performance Tuning Transaction Management Locking Mechanisms	IBM DB2	Medium	3 mins	Solve
Consider the following DB2 database scenario. You are managing a stock trading platform that uses a DB2 database to track user transactions and market prices. The database has two tables, Users and Stocks. A user transaction to buy a stock is a two-step process: 1. Decrease the user's balance in the Users table. 2. Increase the quantity of the stock owned by the user in the Stocks table. Both these steps need to be performed atomically to maintain data consistency. Recently, with the increase in the volume of transactions, you are experiencing performance issues. Additionally, you have observed that during peak trading hours, a large number of user transactions are getting blocked, leading to user dissatisfaction. Which of the following strategies would BEST address the performance and blocking issues, while ensuring data consistency? A: Implement an optimistic concurrency control mechanism. B: Reduce the transaction isolation level to READ UNCOMMITTED. C: Break the transaction into two separate transactions D: Increase the database's buffer pool size. E: Implement row-level locking.
	DB2 Isolation Levels and Data Consistency Revisited Transactions Isolation Levels Data Consistency	IBM DB2	Medium	2 mins	Solve
Consider two users executing the following transactions concurrently on DB2: Transaction 1 (User A): Transaction 2 (User B): Table1 has thousands of records, and the value 'Value1' for Column1 is not unique in Table1. Both transactions are executed almost simultaneously with Transaction 2 executed a bit earlier. Considering the isolation levels set for the transactions, which of the following is the potential data inconsistency issue that might arise? A: A deadlock situation may occur. B: Transaction 1 will wait indefinitely for Transaction 2 to commit. C: Both transactions might update the same record leading to a lost update. D: Transaction 1 can experience a dirty read due to the changes made by Transaction 2.
	Optimizing Query Performance Indexing Query Optimization	IBM DB2	Medium	2 mins	Solve
You are managing a DB2 database which includes a table named `ORDERS`. The `ORDERS` table has a large volume of data and contains the following columns: `OrderID`, `CustomerID`, `OrderDate`, `ProductID`, `Quantity`. One of the frequently executed queries on the `ORDERS` table is: You are asked to optimize this query without changing its structure or the table schema. Which of the following strategies would MOST likely improve the performance of this query? A: Create a HASH index on `CustomerID` and `OrderDate`. B: Create a CLUSTERED index on `CustomerID` and `OrderDate`. C: Create a NONCLUSTERED index on `CustomerID` and `OrderDate`. D: Create a CLUSTERED index on `OrderID`. E: Create a NONCLUSTERED index on `OrderID`.
	Transaction Handling and Error Recovery in DB2 SQL Programming Transactions Error Handling	IBM DB2	Medium	3 mins	Solve
Consider the following pseudocode in an IBM DB2 environment: This stored procedure is used to update the inventory of a particular item. If the `NewQuantity` input parameter is negative, the procedure signals an exception. There's also a handler declared for exceptions, which logs an error message. Given this scenario, if an error occurs during the UPDATE statement, which of the following will happen? A: The update operation will fail, an error message will be logged, and the quantity in the inventory will remain unchanged. B: The update operation will succeed, no error message will be logged, and the quantity in the inventory will be updated. C: The update operation will fail, an error message will be logged, but the quantity in the inventory will still be updated. D: The update operation will fail, no error message will be logged, and the quantity in the inventory will remain unchanged. E: The update operation will succeed, an error message will be logged, but the quantity in the inventory will still be updated.

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 IBM DB2 -databasetest 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 IBM DB2 -databasetest 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 IBM DB2 Database Assessment Test

Why you should use Pre-employment IBM DB2 Database Online Test?

The IBM DB2 -databasetest 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:

Kendskab til IBM DB2 -database og dens funktioner
Forståelse af SQL Basics og dets syntaks
Evne til at designe databaser og skabe passende tabelstrukturer
Færdighed i datamanipulation ved hjælp af SQL -forespørgsler
Erfaring med at oprette tabeller og definere indekser og begrænsninger
Forståelse af sammenføjninger og underspil for dataindhentning
Kendskab til lagrede procedurer og deres implementering
Fortrolighed med triggere og deres brug i databaseoperationer
Forståelse af samtidighed og låsemekanismer i DB2
Evne til at udføre præstationstuning til optimal databaseoperation

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 IBM DB2 Database Online Test?

databasedesign
Denne færdighed omfatter evnen til at designe en effektiv og godt struktureret databaseskema I DB2, herunder definition af tabeller, forhold og datatyper. Måling af denne færdighed hjælper med at vurdere kandidatens ekspertise i at oprette et databaseskema, der opfylder kravene og sikrer dataintegritet og ydeevne.
Data Manipulation
Denne færdighed fokuserer på kandidatens viden og erfaring i Udførelse af datamanipulationsoperationer i DB2, såsom indsættelse, opdatering og sletning af poster. Evaluering af denne færdighed er afgørende, da den afspejler kandidatens evne til effektivt at håndtere og manipulere data inden for en DB2 -database.
tabeloprettelse
Denne færdighed vedrører kandidatens færdigheder i at oprette og styre database Tabeller i DB2, herunder definition af kolonner, begrænsninger og indekser. Det er vigtigt at måle denne færdighed for at sikre, at kandidaten nøjagtigt kan oprette tabeller, der er i overensstemmelse med datamodellen og optimere forespørgselsydelse.
indekser og begrænsninger
Denne færdighed dækker forståelse og anvendelse af Indekser og begrænsninger i DB2. Det er vigtigt at måle denne færdighed til at vurdere kandidatens viden om at opretholde dataintegritet, forbedre forespørgselsydelsen og styre databasebegrænsninger Brug sammenføjninger og underkasser effektivt i DB2 for at hente og manipulere data fra flere tabeller. Måling af denne færdighed hjælper med at evaluere kandidatens færdigheder i at skrive komplekse forespørgsler og udtrække meningsfuld indsigt fra sammenkoblede data.
lagrede procedurer </H4> <p> Denne færdighed involverer viden og oplevelse af at skabe og bruge lagrede procedurer i DB2. Det er vigtigt at måle denne færdighed, da lagrede procedurer kan øge ydeevnen, opretholde konsistens og indkapslet kompleks forretningslogik i databasen. </p> <h4> triggers
Denne færdighed omfatter forståelse og implementering af triggere I DB2, der muliggør automatisk udførelse af foruddefinerede handlinger som svar på specifikke begivenheder eller ændringer i databasen. Måling af denne færdighed er vigtig for at vurdere kandidatens evne til at implementere datavalidering, håndhæve forretningsregler og opretholde dataintegritet ved hjælp af triggere.
samtidighed og låsning
Denne færdighed fokuserer på kandidatens fortrolighed med begreberne samtidighedskontrol og låsemekanismer i DB2. Evaluering af denne færdighed hjælper med at måle kandidatens viden om styring af samtidige transaktioner, undgå datainkonsekvens og sikre dataintegritet i multi-user-miljøer.
Performance Tuning
Denne færdighed involverer evnen til at optimere Ydelsen af DB2 -databaser ved at indstille forskellige aspekter, herunder forespørgselsoptimering, indeksbrug og databasekonfiguration. Måling af denne færdighed er afgørende for at vurdere kandidatens ekspertise i at identificere og løse flaskehalse i ydelsen for at forbedre den samlede systemeffektivitet.
backup og gendannelse
Denne færdighed dækker viden og oplevelsen af implementering af backup og Gendannelsesstrategier for DB2 -databaser for at sikre databeskyttelse og minimere datatab. Evaluering af denne færdighed hjælper med at bestemme kandidatens evne til at designe og udføre backup -planer, implementere gendannelsesprocedurer og afbøde virkningen af potentielle datakatastrofer.
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 IBM DB2 -databasetest to be based on.
SQL Basics
Databasedesign
Datamanipulation
Tabeloprettelse
Indekser og begrænsninger
Slutter sig til og underkører
Lagrede procedurer
Triggers
Samtidighed og låsning
Performance Tuning
Backup og gendannelse
Relationsdatabasestyringssystemer
Enheder og forhold
Normalisering
Primære nøgler
Udenlandske nøgler
Datatyper
Nulværdier
Vælg erklæring
Indsæt erklæring
Opdateringsopsætning
Slet erklæring
Samlede funktioner
Gruppe efter
Har klausul
Bestil af
Data Definition Language (DDL)
Opret tabel
Alter tabel
Drop Table
Opret indeks
Ændre indeks
Drop Index
Begrænsninger
Typer af sammenføjninger
Inner Deltag
Venstre slutter sig
Højre deltagelse
Fuld slutning
Selv-sammenføjning
Underspillerier
Korrelerede underspil
Indlejede underspil
Oprettelse og udførelse af lagrede procedurer
Input/outputparametre
Fejlhåndtering
Slipper lagrede procedurer
Oprettelse og brug af triggere
Trigger -typer
For hver række trigger
Før trigger
Efter trigger
Udløsende begivenheder
Låsemekanismer
Samtidighedsproblemer
Deadlocks
Præstationsovervågning
Forespørgseloptimering
Indeksering
Tabelopdeling
Backup -strategier
Gendannelsesteknikker
Point-in-Time Recovery
Fuld sikkerhedskopi
Differential backup
Trinvis sikkerhedskopi
Arkivering

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What roles can I use the IBM DB2 Database Online Test for?

DB2 -administrator
DB2 -udvikler
DB2 -databasearkitekt
IBM Data Engineer
DB2 -konsulent

How is the IBM DB2 Database 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

Kendskab til backup- og gendannelsesprocedurer for databeskyttelse
Erfaring med at integrere DB2 med andre teknologier
Færdigheder i at skrive komplekse SQL -forespørgsler til dataanalyse
Forståelse af databasens normalisering og denormaliseringsteknikker
Kendskab til DB2 -værktøjer til datastyring og administration
Evne til at fejlfinde og løse database-relaterede problemer
Erfaring i databasemigration og versionopgraderinger
Færdighed i databasemodellering og skema design
Forståelse af databasesikkerhed og adgangskontrol
Kendskab til DB2 -overvågning og præstationsoptimering

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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

IBM DB2 Database 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.