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: Forståelse og implementering af grundlæggende JavaScript -syntaks Brug af JavaScript ES6 -funktioner effektivt Oprettelse og manipulering af objekter ved hjælp af JavaScript oops -koncepter Arbejde med API'er for at hente og behandle data Håndtering af asynkrone operationer i Node.js ved hjælp af løfter Forståelse og anvendelse af Node.js -modulsystemet Forståelse af anmodning-respons livscyklus i node.js Udfører CRUD -operationer i SQL ved hjælp af JavaScript Brug af SQL -sammenføjninger og indekser effektivt Anvendelse af JavaScript -programmeringskoncepter til at løse problemer

JavaScript, NodeJS & SQL Online Test

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

JavaScript Basics JS ES6 JS oops Håndtering af API'er Asynkron node.js og løfter Node.js modulsystem Anmod om svar livscyklus SQL CRUD -operationer SQL slutter sig til og indekser JavaScript -programmering

About the test:

JavaScript, Nodejs & SQL Test bruger scenariebaserede MCQ'er til at evaluere kandidater om deres færdigheder i JavaScript-programmeringssprog, Nodejs Runtime-miljø og SQL-database. Testen vurderer kandidaternes forståelse af emner såsom begivenhedsdrevet programmering, asynkron programmering, middleware, databaseforbindelser, SQL-forespørgsler og databasedesignprincipper. Kandidater evalueres efter deres evne til at bruge JavaScript og Nodejs til at udvikle applikationer på serversiden, interagere med databaser, designdatabaseskemaer og skrive optimerede og sikre SQL-forespørgsler til datamanipulation og hentning.

Covered skills:

JavaScript Basics
JS oops
Asynkron node.js og løfter
Anmod om svar livscyklus
SQL slutter sig til og indekser

JS ES6
Håndtering af API'er
Node.js modulsystem
SQL CRUD -operationer
JavaScript -programmering

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9 reasons why

Adaface JavaScript, NodeJS & SQL Test is the most accurate way to shortlist Fuld stakudviklers

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:

Dygtige til grundlæggende JavaScript
Stærk forståelse af JS ES6 -koncepter
Evne til at anvende JavaScript oops -principper
Erfaring med håndtering af API'er i JavaScript
Fortrolighed med asynkron programmering i Node.js og løfter
Dyb viden om Node.js -modulsystemet
Forståelse af anmodningen om reaktionssvar i Node.js
Kompetence i SQL CRUD -operationer
Dygtighed i SQL -sammenføjninger og indekser
Stærke JavaScript -programmeringsevner
Effektiv fejl og undtagelseshåndtering
Erfaring med Git -versionskontrol

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 JavaScript, Nodejs & SQL Test vil være ikke-gåbart.

🧐 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 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 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

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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 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:

Forståelse og implementering af grundlæggende JavaScript -syntaks
Brug af JavaScript ES6 -funktioner effektivt
Oprettelse og manipulering af objekter ved hjælp af JavaScript oops -koncepter
Arbejde med API'er for at hente og behandle data
Håndtering af asynkrone operationer i Node.js ved hjælp af løfter
Forståelse og anvendelse af Node.js -modulsystemet
Forståelse af anmodning-respons livscyklus i node.js
Udfører CRUD -operationer i SQL ved hjælp af JavaScript
Brug af SQL -sammenføjninger og indekser effektivt
Anvendelse af JavaScript -programmeringskoncepter til at løse problemer

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?

javascript Basics
javascript Basics dækker de grundlæggende koncepter og syntaks for JavaScript -programmeringssprog, herunder variabler, datatyper, operatører, kontrolstrukturer og funktioner. Denne færdighed måles i testen for at vurdere kandidatens forståelse af kerneprincipperne i JavaScript og deres evne til at skrive grundlæggende JavaScript -kode.
JS ES6 </H4> <p> JS ES6 fokuserer på de nye funktioner og forbedringer introduceret i ECMASCRIPT 6, den seneste version af JavaScript. Det inkluderer koncepter som pilfunktioner, skabelon -bogstaver, ødelæggelse, klasser, moduler og løfter. Denne færdighed måles i testen for at evaluere kandidatens fortrolighed med moderne JavaScript-sprogfunktioner og deres evne til at skrive effektiv og vedligeholdelig kode. </p> <h4> js oops
js oops (objektorienteret programmering ) involverer at organisere kode i genanvendelige objekter og bruge arv, indkapsling og polymorfisme. Det giver mulighed for bedre kodeorganisation, modularitet og genanvendelighed. Denne færdighed måles i testen for at vurdere kandidatens dygtighed til at skrive objektorienteret JavaScript-kode, og deres forståelse af OOP-principper.
Håndtering af API'er
Håndtering af API'er involverer at hente data fra eksternt web API'er og integration af det i JavaScript -applikationer. Det kræver viden om HTTP -anmodninger, JSON -parsing og håndtering af asynkrone operationer. Denne færdighed måles i testen for at evaluere kandidatens evne til at arbejde med web -API'er og forbruge eksterne data i JavaScript -applikationer.
asynkron node.js og løfter
asynkron node.js og Løfter fokuserer på den asynkrone karakter af Node.js og brugen af løfter til håndtering af asynkrone operationer. Det inkluderer koncepter såsom tilbagekald, begivenhedsdrevet programmering, async/afvente og fejlhåndtering. Denne færdighed måles i testen for at vurdere kandidatens forståelse af asynkron programmering i node.js og deres evne til at skrive effektiv og skalerbar asynkron kode .js modulsystem dækker organisationen og genanvendelige moduler i Node.js applikationer. Det inkluderer koncepter såsom import og eksport af moduler, ved hjælp af kernemoduler, oprettelse af brugerdefineret modul og modulopløsning. Denne færdighed måles i testen for at evaluere kandidatens fortrolighed med modulsystemet i Node.js og deres evne til at oprette og bruge moduler effektivt i Node.js -projekter.
anmodning om respons livscyklus </h4> < P> Anmod om svar Livscyklus involverer forståelse af, hvordan klient-server-kommunikation fungerer i forbindelse med webapplikationer. Det inkluderer koncepter som HTTP -metoder, anmodning om overskrifter, rutehåndtering, middleware og responshåndtering. Denne færdighed måles i testen for at vurdere kandidatens forståelse af anmodningsresponsstrømmen i webapplikationer og deres evne til at håndtere HTTP-anmodninger og svar effektivt. </p> <h4> SQL CRUD-operationer
SQL CRUD -operationer henviser til Create, Read, Opdatering og Slet operationer udført i databasen ved hjælp af struktureret forespørgselssprog (SQL). Det inkluderer koncepter såsom indsættelse af data, forespørgsel om data, opdatering af data og sletning af data fra relationelle databaser. Denne færdighed måles i testen for at evaluere kandidatens dygtighed i SQL, og deres evne til at udføre grundlæggende databaseoperationer ved hjælp af SQL.
SQL tilslutter sig og indekser
SQL tilslutter sig og indekser involverer arbejde med Relationsdatabaser og forståelse af, hvordan man deltager i tabeller og optimerer databaseydelsen ved hjælp af indekser. Det inkluderer koncepter såsom indre sammenføjning, ydre sammenføjning, tværgående sammenføjning, primære nøgler, udenlandske nøgler og indeksoprettelse. Denne færdighed måles i testen for at vurdere kandidatens evne til at skrive komplekse forespørgsler, der involverer sammenføjning og deres viden om optimering af databaseforespørgsler ved hjælp af indekser. af kandidater til at skrive rene, effektive og velstrukturerede JavaScript-kode. Den vurderer deres viden om bedste praksis, kodningskonventioner, fejlhåndtering, kodeydelse og fejlfindingsevner. Denne færdighed måles i testen for at evaluere kandidatens samlede færdighed i JavaScript -programmering og deres evne til at løse programmeringsproblemer ved hjælp af 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
Operatører
Funktioner
Arrays
Genstande
Strenge
Betingelser
Loops
Lukninger
Prototyper
Pilfunktioner
Destructuring
Hvile/spredningsoperatør
Løfter
Async/venter
Moduler
Begivenhedsdrevet programmering
Buffere og vandløb
Filsystem
HTTP -modul
Express rammer
Fejlhåndtering af middleware
Routing
CRUD -operationer med SQL
Sprog på datamanipulation
Data Definition Sprog
Transaktioner
Indekser
Slutter sig
Normalisering
Samlede funktioner
Inner Deltag
Venstre slutter sig
Højre deltagelse
Fuld ydre sammenføjning
Tilbagekald
Fejlhåndtering
Undtagelseshåndtering
Fejlfinding
Testning
Regelmæssige udtryk
Hukommelsesstyring
Variabler
Omfang
Tilbagekald
Begivenhedshåndtering
Prototype-baseret arv
Fejlforplantning
Asynkron programmering
Envejs dataflow
Uforanderlige data
Databinding
Afhængighedsinjektion
CRUD API -operationer
Løfte kædning
Fejlhåndtering med løfter
Eslint
NPM -scripts
Git kommandoer
Træk anmodninger

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

Fuld stakudvikler
JavaScript -udvikler
Node.js -udvikler
SQL -udvikler

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

Implementering af JavaScript -datastrukturer og algoritmer
Optimering af JavaScript -kode til ydeevne
Oprettelse og vedligeholdelse af RESTful API'er i Node.js
Implementering af godkendelse og tilladelse i Node.js -applikationer
Forståelse og arbejde med NoSQL -databaser i Node.js
Brug af JavaScript -rammer og biblioteker (f.eks. Express, React) til at udvikle webapplikationer
Implementering af testdrevet udvikling (TDD) og skriveenhedstest for JavaScript-kode
Debugging og fejlfinding af JavaScript -applikationer
Brug af cache -mekanismer og optimering af databaseforespørgsler i Node.js
Implementering af server-side rendering (SSR) ved hjælp af node.js rammer

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

Preview this test

Se prøvescorekort

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

JavaScript, NodeJS & SQL 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.