Why you should use JavaScript, NodeJS & SQL Online Test?

The JavaScript, NodeJS & SQL -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: Förstå och implementera grundläggande JavaScript -syntax Med JavaScript ES6 -funktioner effektivt Skapa och manipulera objekt med JavaScript -oops koncept Arbetar med API: er för att hämta och bearbeta data Hantering av asynkrona operationer i Node.js med löften Förstå och använda Node.js -modulsystemet Förstå livscykeln för begäran-svar i node.js Utföra CRUD -operationer i SQL med JavaScript Använder SQL -sammanfogningar och index effektivt Tillämpa JavaScript -programmeringskoncept för att lösa problem

JavaScript, NodeJS & SQL Online Test

Q: What topics are covered in the JavaScript, NodeJS & SQL Online Test?

JavaScript Basics Js es6 Js oops Hantering av API: er Asynkron node.js och löften Node.js modulsystem Begär responslivscykel SQL CRUD -verksamhet SQL går med och index JavaScript -programmering

About the test:

JavaScript, NodeJS & SQL-testet använder scenariobaserade MCQ: er för att utvärdera kandidater om deras kunskaper i JavaScript-programmeringsspråk, NodeJS runtime-miljö och SQL-databas. Testet utvärderar kandidaternas förståelse av ämnen som händelsedriven programmering, asynkron programmering, mellanprogram, databasanslutningar, SQL-frågor och databasdesignprinciper. Kandidaterna utvärderas utifrån sin förmåga att använda JavaScript och NodeJS för att utveckla applikationer på serversidan, interagera med databaser, designdatabasscheman och skriva optimerade och säkra SQL-frågor för datamanipulation och hämtning.

Covered skills:

JavaScript Basics
Js oops
Asynkron node.js och löften
Begär responslivscykel
SQL går med och index

Js es6
Hantering av API: er
Node.js modulsystem
SQL CRUD -verksamhet
JavaScript -programmering

Try practice test

Start 14-day free trial

9 reasons why

Adaface JavaScript, NodeJS & SQL Test is the most accurate way to shortlist Full Stack Developers

Reason #1

Tests for on-the-job skills

The JavaScript, NodeJS & SQL 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:

Grundläggande JavaScript
Stark förståelse för JS ES6 -koncept
Möjlighet att tillämpa JavaScript -oops principer
Erfarenhet av att hantera API: er i JavaScript
Bekanta med asynkron programmering i Node.js och löften
Djup kunskap om Node.js -modulsystemet
Förståelse av livescykeln för begäran i Node.js
Kompetens i SQL CRUD -verksamheten
Färdighet i SQL -sammanfogningar och index
Starka JavaScript -programmeringsförmågor
Effektiv fel och undantagshantering
Erfarenhet med GIT -versionskontroll

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

Try practice test

Start 14-day free trial

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

Dessa är bara ett litet urval från vårt bibliotek med 10 000+ frågor. De faktiska frågorna om detta JavaScript, NodeJS & SQL -test kommer att vara icke-googleable.

🧐 Question
Medium Async Await Promises Promises Async-Await	Try practice test
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
Medium Bitcoin prices Axios Promises	Try practice test
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
Medium My Module Scope	Try practice test
What will the output of the following JavaScript code be?
Medium Promise Resolve Promises Async-Await	Try practice test
What does the following code output?
Easy Throw, Try, Async Promises Async-Await	Try practice test
What does the following JS code output?
Medium I/O cycle and main module Event Loop	Try practice test
Review the following NodeJS code: Pick the correct statements: A: X will be logged after Y always B: Y will be logged after X always C: The order of executing timeout and immediate callbacks is non-deterministic and is bound by the performance of the process D: In this case, the function calls are scheduled in the main module and not in the I/O cycle E: In this case, the function calls are scheduled in the I/O cycle so setImmediate is always executed before any timers scheduled in the I/O phase, independently of how many timers are left
Easy Res methods	Try practice test
If none of the methods (res.download, res.end, res.json, res.jsonp, res.redirect, res.render, res.send, res.sendFile, res.sendStatus) are called from a route handler to terminate request response cycle, what happens to the the client request? A) Will be left hanging indefinitely B) Will get an internal server error - 500 C) Will get a service unavailable error - 503 D) Will be left hanging for a while and then request timeout error - 408
Medium Phases and Timers Event Loop	Try practice test
Review the following NodeJS code: Pick the correct statements: A: Adaface will be logged after Lovelace. B: Lovelace will be logged after Adaface. C: Once the asyncOpThatTakes195ms completes reading the file, it starts executing the callback which takes 10 seconds. Only after this is finished, the event loop will execute the timers that are finished. So the timeout call back will actually be executed after 205 ms even though it is scheduled to be run after 200 ms D: Once the asyncOpThatTakes195ms completes reading the file, it starts executing the callback. While executing the callback, the scheduled timer becomes ready to be executed. So the runtime executes the timer and then completes processing the callback.
Medium Multi Select JOIN GROUP BY	Try practice test
Consider the following SQL table: How many rows does the following SQL query return?
Medium nth highest sales Nested queries User Defined Functions	Try practice test
Consider the following SQL table: Which of the following SQL commands will find the ‘nth highest Sales’ if it exists (returns null otherwise)?
Medium Select & IN Nested queries	Try practice test
Consider the following SQL table: Which of the following SQL queries would return the year when neither a football or cricket winner was chosen?
Medium Sorting Ubers Nested queries Join Comparison operators	Try practice test
Consider the following SQL table: What will be the first two tuples resulting from the following SQL command?
Hard With, AVG & SUM MAX() MIN() Aggregate functions	Try practice test
Consider the following SQL table: How many tuples does the following query return?
Easy Registration Queue Logic Queues	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
Medium Visitors Count Strings Logic	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

	🧐 Question	🔧 Skill
	Medium Async Await Promises Promises Async-Await	2 mins JavaScript	Try practice test
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
	Medium Bitcoin prices Axios Promises	2 mins JavaScript	Try practice test
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
	Medium My Module Scope	2 mins JavaScript	Try practice test
What will the output of the following JavaScript code be?
	Medium Promise Resolve Promises Async-Await	2 mins JavaScript	Try practice test
What does the following code output?
	Easy Throw, Try, Async Promises Async-Await	2 mins JavaScript	Try practice test
What does the following JS code output?
	Medium I/O cycle and main module Event Loop	2 mins NodeJS	Try practice test
Review the following NodeJS code: Pick the correct statements: A: X will be logged after Y always B: Y will be logged after X always C: The order of executing timeout and immediate callbacks is non-deterministic and is bound by the performance of the process D: In this case, the function calls are scheduled in the main module and not in the I/O cycle E: In this case, the function calls are scheduled in the I/O cycle so setImmediate is always executed before any timers scheduled in the I/O phase, independently of how many timers are left
	Easy Res methods	3 mins NodeJS	Try practice test
If none of the methods (res.download, res.end, res.json, res.jsonp, res.redirect, res.render, res.send, res.sendFile, res.sendStatus) are called from a route handler to terminate request response cycle, what happens to the the client request? A) Will be left hanging indefinitely B) Will get an internal server error - 500 C) Will get a service unavailable error - 503 D) Will be left hanging for a while and then request timeout error - 408
	Medium Phases and Timers Event Loop	2 mins NodeJS	Try practice test
Review the following NodeJS code: Pick the correct statements: A: Adaface will be logged after Lovelace. B: Lovelace will be logged after Adaface. C: Once the asyncOpThatTakes195ms completes reading the file, it starts executing the callback which takes 10 seconds. Only after this is finished, the event loop will execute the timers that are finished. So the timeout call back will actually be executed after 205 ms even though it is scheduled to be run after 200 ms D: Once the asyncOpThatTakes195ms completes reading the file, it starts executing the callback. While executing the callback, the scheduled timer becomes ready to be executed. So the runtime executes the timer and then completes processing the callback.
	Medium Multi Select JOIN GROUP BY	2 mins SQL	Try practice test
Consider the following SQL table: How many rows does the following SQL query return?
	Medium nth highest sales Nested queries User Defined Functions	3 mins SQL	Try practice test
Consider the following SQL table: Which of the following SQL commands will find the ‘nth highest Sales’ if it exists (returns null otherwise)?
	Medium Select & IN Nested queries	3 mins SQL	Try practice test
Consider the following SQL table: Which of the following SQL queries would return the year when neither a football or cricket winner was chosen?
	Medium Sorting Ubers Nested queries Join Comparison operators	3 mins SQL	Try practice test
Consider the following SQL table: What will be the first two tuples resulting from the following SQL command?
	Hard With, AVG & SUM MAX() MIN() Aggregate functions	2 mins SQL	Try practice test
Consider the following SQL table: How many tuples does the following query return?
	Easy Registration Queue Logic Queues	30 mins Coding	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
	Medium Visitors Count Strings Logic	30 mins Coding	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Async Await Promises Promises Async-Await	JavaScript	Medium	2 mins	Try practice test
What will the following code output? A: 24 after 5 seconds and after another 5 seconds, another 24 B: 24 followed by another 24 immediately C: 24 immediately and another 24 after 5 seconds D: After 5 seconds, 24 and 24 E: Undefined F: NaN G: None of these
	Bitcoin prices Axios Promises	JavaScript	Medium	2 mins	Try practice test
Review the following JavaScript code and pick the correct options: Assume that the API returns a successful 200 response code and a JSON object as the response body. What would the value of ‘a’ be after the code is executed?
	My Module Scope	JavaScript	Medium	2 mins	Try practice test
What will the output of the following JavaScript code be?
	Promise Resolve Promises Async-Await	JavaScript	Medium	2 mins	Try practice test
What does the following code output?
	Throw, Try, Async Promises Async-Await	JavaScript	Easy	2 mins	Try practice test
What does the following JS code output?
	I/O cycle and main module Event Loop	NodeJS	Medium	2 mins	Try practice test
Review the following NodeJS code: Pick the correct statements: A: X will be logged after Y always B: Y will be logged after X always C: The order of executing timeout and immediate callbacks is non-deterministic and is bound by the performance of the process D: In this case, the function calls are scheduled in the main module and not in the I/O cycle E: In this case, the function calls are scheduled in the I/O cycle so setImmediate is always executed before any timers scheduled in the I/O phase, independently of how many timers are left
	Res methods	NodeJS	Easy	3 mins	Try practice test
If none of the methods (res.download, res.end, res.json, res.jsonp, res.redirect, res.render, res.send, res.sendFile, res.sendStatus) are called from a route handler to terminate request response cycle, what happens to the the client request? A) Will be left hanging indefinitely B) Will get an internal server error - 500 C) Will get a service unavailable error - 503 D) Will be left hanging for a while and then request timeout error - 408
	Phases and Timers Event Loop	NodeJS	Medium	2 mins	Try practice test
Review the following NodeJS code: Pick the correct statements: A: Adaface will be logged after Lovelace. B: Lovelace will be logged after Adaface. C: Once the asyncOpThatTakes195ms completes reading the file, it starts executing the callback which takes 10 seconds. Only after this is finished, the event loop will execute the timers that are finished. So the timeout call back will actually be executed after 205 ms even though it is scheduled to be run after 200 ms D: Once the asyncOpThatTakes195ms completes reading the file, it starts executing the callback. While executing the callback, the scheduled timer becomes ready to be executed. So the runtime executes the timer and then completes processing the callback.
	Multi Select JOIN GROUP BY	SQL	Medium	2 mins	Try practice test
Consider the following SQL table: How many rows does the following SQL query return?
	nth highest sales Nested queries User Defined Functions	SQL	Medium	3 mins	Try practice test
Consider the following SQL table: Which of the following SQL commands will find the ‘nth highest Sales’ if it exists (returns null otherwise)?
	Select & IN Nested queries	SQL	Medium	3 mins	Try practice test
Consider the following SQL table: Which of the following SQL queries would return the year when neither a football or cricket winner was chosen?
	Sorting Ubers Nested queries Join Comparison operators	SQL	Medium	3 mins	Try practice test
Consider the following SQL table: What will be the first two tuples resulting from the following SQL command?
	With, AVG & SUM MAX() MIN() Aggregate functions	SQL	Hard	2 mins	Try practice test
Consider the following SQL table: How many tuples does the following query return?
	Registration Queue Logic Queues	Coding	Easy	30 mins	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
	Visitors Count Strings Logic	Coding	Medium	30 mins	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

Reason #4

1200+ customers in 75 countries

Med Adaface kunde vi optimera vår initiala screeningprocess med uppemot 75 %, vilket frigjorde dyrbar tid för både anställande chefer och vårt team för att förvärva talang!

Brandon Lee, Chef för människor, Love, Bonito

Try practice test

Start 14-day free trial

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment JavaScript, NodeJS & SQL -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 JavaScript, NodeJS & SQL -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

Visa exempelskort

Try practice test

Start 14-day free trial

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

Learn more

Preview this test

Visa exempelskort

About the JavaScript, NodeJS & SQL Assessment Test

Why you should use Pre-employment JavaScript, NodeJS & SQL Online Test?

The JavaScript, NodeJS & SQL -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:

Förstå och implementera grundläggande JavaScript -syntax
Med JavaScript ES6 -funktioner effektivt
Skapa och manipulera objekt med JavaScript -oops koncept
Arbetar med API: er för att hämta och bearbeta data
Hantering av asynkrona operationer i Node.js med löften
Förstå och använda Node.js -modulsystemet
Förstå livscykeln för begäran-svar i node.js
Utföra CRUD -operationer i SQL med JavaScript
Använder SQL -sammanfogningar och index effektivt
Tillämpa JavaScript -programmeringskoncept för att lösa problem

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 JavaScript, NodeJS & SQL Online Test?

JS ES6
JS ES6 fokuserar på de nya funktionerna och förbättringar introducerade i Ecmascript 6, den senaste versionen av JavaScript. Det inkluderar koncept som pilfunktioner, malllitteraler, förstörande, klasser, moduler och löften. Denna färdighet mäts i testet för att utvärdera kandidatens kännedom om moderna JavaScript-språkfunktioner och deras förmåga att skriva effektiv och underhållbar kod.
js oops
js oops (objektorienterad programmering ) innebär att organisera kod i återanvändbara objekt och använda arv, inkapsling och polymorfism. Det möjliggör bättre kodorganisation, modularitet och återanvändbarhet. Denna färdighet mäts i testet för att bedöma kandidatens kompetens i att skriva objektorienterad JavaScript-kod och deras förståelse av OOP-principer.
Hantering av API: er
Hantering av API: er innebär att hämta data från extern webb API: er och integrera det i JavaScript -applikationer. Det kräver kunskap om HTTP -förfrågningar, JSON -parsing och hantering av asynkrona operationer. Denna färdighet mäts i testet för att utvärdera kandidatens förmåga att arbeta med WEB -API: er och konsumera externa data i JavaScript -applikationer.
asynchronous node.js and lovar
asynchronous node.js and Löften fokuserar på den asynkrona naturen hos node.js och användningen av löften för hantering av asynkrona operationer. Det inkluderar koncept som återuppringningar, händelsedriven programmering, async/väntar och felhantering. Denna färdighet mäts i testet för att bedöma kandidatens förståelse för asynkron programmering i node.js och deras förmåga att skriva effektiv och skalbar asynkron kod.
node.js -modulsystem
node nod .js -modulsystem täcker organisationen och återanvändbara moduler i Node.js -applikationer. Det inkluderar koncept som att importera och exportera moduler, använda kärnmoduler, anpassad modulskapande och modulupplösning. Denna färdighet mäts i testet för att utvärdera kandidatens kännedom om modulsystemet i Node.js och deras förmåga att skapa och använda moduler effektivt i Node.js -projekt.
Begär svar Lifecycle </h4> < P> Begär Svar Lifecycle innebär att förstå hur klient-serverkommunikation fungerar i samband med webbapplikationer. Det inkluderar koncept som HTTP -metoder, begäran om rubriker, rutthantering, mellanprogram och svarshantering. Denna färdighet mäts i testet för att bedöma kandidatens förståelse av förfrågningsresponserflödet i webbapplikationer och deras förmåga att hantera HTTP-förfrågningar och svar effektivt. CRUD -operationer hänvisar till skapandet, läs, uppdatering och radering som utförs i databasen med hjälp av Structured Query Language (SQL). Det innehåller koncept som att infoga data, fråga data, uppdatera data och ta bort data från relationsdatabaser. Denna färdighet mäts i testet för att utvärdera kandidatens kunskaper i SQL och deras förmåga att utföra grundläggande databasoperationer med SQL. Relationsdatabaser och förstå hur man går med i tabeller och optimerar databasprestanda med index. Det inkluderar koncept som inre koppling, yttre koppling, korspark, primära nycklar, utländska nycklar och indexskapande. Denna färdighet mäts i testet för att bedöma kandidatens förmåga att skriva komplexa frågor som involverar sammanfogningar och deras kunskap om att optimera databasfrågor med index. </p> <h4> JavaScript -programmering
JavaScript -programmering täcker den totala förmågan förmåga av kandidater för att skriva ren, effektiv och välstrukturerad JavaScript-kod. Den bedömer deras kunskap om bästa praxis, kodningskonventioner, felhantering, kodprestanda och felsökning. Denna färdighet mäts i testet för att utvärdera kandidatens övergripande kunskaper i JavaScript -programmering och deras förmåga att lösa programmeringsproblem med JavaScript.
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 JavaScript, NodeJS & SQL -test to be based on.
Datatyper
Operatörer
Funktioner
Matriser
Föremål
Strängar
Villkor
Slingor
Stängning
Prototyper
Pilfunktioner
Förstörande
Vila/spridningsoperatör
Löften
Async/vänta
Moduler
Evenemangsdriven programmering
Buffertar och bäckar
Filsystem
Http -modul
Uttrycksram
Felhantering mellanvaror
Routing
CRUD -operationer med SQL
Datamanipulationsspråk
Data Definition Language
Transaktioner
Index
Ansluter sig till
Normalisering
Sammanlagda funktioner
Inre koppling
Vänstra gå samman
Gå med i höger
Full yttre sammanfogning
Återuppringning
Felhantering
Undantagshantering
Felsökning
Testning
Vanliga uttryck
Minneshantering
Variabler
Räckvidd
Återuppringning
Evenemangshantering
Prototypbaserad arv
Felförökning
Asynkron programmering
Envägs dataflöde
Oföränderliga data
Databindning
Beroendeinjektion
CRUD API -verksamhet
Lova kedjan
Felhantering med löften
Eslint
Npm -skript
Git -kommandon
Dra förfrågningar

Try practice test

Start 14-day free trial

What roles can I use the JavaScript, NodeJS & SQL Online Test for?

Full Stack Developer
JavaScript -utvecklare
Node.js -utvecklare
SQL -utvecklare

How is the JavaScript, NodeJS & SQL 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

Implementera JavaScript -datastrukturer och algoritmer
Optimera JavaScript -kod för prestanda
Skapa och underhålla RESTful API: er i Node.js
Implementering av autentisering och auktorisation i Node.js -applikationer
Förstå och arbeta med NoSQL -databaser i Node.js
Använda JavaScript -ramar och bibliotek (t.ex. Express, React) för att utveckla webbapplikationer
Implementering av testdriven utveckling (TDD) och skrivenhetstester för JavaScript-kod
Felsökning och felsökning av JavaScript -applikationer
Att använda cachemekanismer och optimera databasfrågor i Node.js
Implementering av serversidan rendering (SSR) med hjälp av node.js-ramverk

The coding question for experienced candidates will be of a higher difficulty level to evaluate more hands-on experience.

Preview this test

Visa exempelskort

De rekryterande cheferna upplevde att de genom de tekniska frågorna som de ställde under panelintervjuerna kunde berätta vilka kandidater som hade bättre poäng och särskiljde sig med de som inte fick lika bra poäng. Dom är mycket nöjd med kvaliteten på kandidater som nominerades med Adaface-screeningen.

85%

minskning av screeningstiden

Visa hela fallstudien

JavaScript, NodeJS & SQL Hiring Test Vanliga frågor

Kan jag kombinera flera färdigheter till en anpassad bedömning?

Ja absolut. Anpassade bedömningar ställs in baserat på din arbetsbeskrivning och kommer att innehålla frågor om alla måste-ha färdigheter du anger.

Har du några anti-cheating eller proctoring-funktioner på plats?

Vi har följande anti-cheating-funktioner på plats:

Icke-Googleable-frågor
IP -proctoring
webbproctoring
webbkamera proctoring
Detektion av plagiering
säker webbläsare

Läs mer om proctoring -funktionerna.

Hur tolkar jag testresultat?

Det främsta att tänka på är att en bedömning är ett eliminationsverktyg, inte ett urvalsverktyg. En kompetensbedömning är optimerad för att hjälpa dig att eliminera kandidater som inte är tekniskt kvalificerade för rollen, den är inte optimerad för att hjälpa dig hitta den bästa kandidaten för rollen. Så det ideala sättet att använda en bedömning är att bestämma en tröskelpoäng (vanligtvis 55%, vi hjälper dig att jämföra) och bjuda in alla kandidater som gör poäng över tröskeln för nästa intervjurundor.

Vilken erfarenhetsnivå kan jag använda detta test för?

Varje AdaFace -bedömning anpassas till din arbetsbeskrivning/ idealisk kandidatperson (våra ämnesexperter kommer att välja rätt frågor för din bedömning från vårt bibliotek med 10000+ frågor). Denna bedömning kan anpassas för alla erfarenhetsnivåer.

Får varje kandidat samma frågor?

Ja, det gör det mycket lättare för dig att jämföra kandidater. Alternativ för MCQ -frågor och ordningen på frågor randomiseras. Vi har anti-cheating/proctoring -funktioner på plats. I vår företagsplan har vi också möjlighet att skapa flera versioner av samma bedömning med frågor om liknande svårighetsnivåer.

Jag är kandidat. Kan jag prova ett träningstest?

Nej. Tyvärr stöder vi inte övningstester just nu. Du kan dock använda våra exempelfrågor för övning.

Vad är kostnaden för att använda detta test?

Du kan kolla in våra prisplaner.

Kan jag få en gratis provperiod?

Plattformen är helt självbetjänande, så här är ett sätt att gå vidare:

Du kan registrera dig gratis för att få en känsla för hur det fungerar.
Den kostnadsfria provperioden inkluderar en provbedömning (Java/JavaScript) som du hittar i din instrumentpanel när du registrerar dig. Du kan använda den för att granska kvaliteten på frågorna och kandidaternas upplevelse av ett konversationstest på Adaface.
För att granska kvaliteten på frågorna kan du också granska våra offentliga frågor för 50+ färdigheter här.
När du är övertygad om att du vill testa det med riktiga bedömningar och kandidater kan du välja en plan enligt dina krav.