Why you should use C# & SQL Online Test?

The Prueba C# y SQL 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: C# de sintaxis básicos C# oops Estructuras de datos C# Operaciones SQL CRUD SQL se une e índices Programación C# Manejo de excepciones en C# Principios de diseño orientados a objetos en C# Comprensión e implementación de algoritmos en C# Conceptos y diseño de bases de datos relacionales en SQL

C# & SQL Online Test

About the test:

La prueba C# SQL utiliza MCQs basados en escenarios para evaluar a los candidatos sobre su comprensión del lenguaje de programación de C# y las bases de datos SQL. La prueba evalúa a los candidatos sobre su conocimiento de la sintaxis C#, los conceptos de programación orientados a objetos (OOP) y el marco .NET, así como su capacidad para escribir y depurar el código C#. También evalúa su familiaridad con la sintaxis y el uso de SQL, los comandos SQL para crear, consultar y modificar bases de datos y tablas relacionales, diseño de bases de datos, normalización e indexación, y su capacidad para escribir consultas SQL eficientes y optimizadas en C#.

Covered skills:

C# de sintaxis básicos
Estructuras de datos C#
SQL se une e índices

C# oops
Operaciones SQL CRUD
Programación C#

Preview this test

Ver cuadro de mando de muestra

9 reasons why

Adaface C# & SQL Test is the most accurate way to shortlist Desarrollador de C#s

Reason #1

Tests for on-the-job skills

The C# & 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:

Comprender e implementar conceptos básicos de sintaxis de C#
Aplicación de conceptos de programación orientados a objetos en C#
Trabajar con varias estructuras de datos en C#
Realizar operaciones CRUD en SQL
Utilizando uniones e índices de manera efectiva en SQL
Aplicación de habilidades de programación de C# en escenarios del mundo real

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

Preview this test

Ver cuadro de mando de muestra

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

Estas son solo una pequeña muestra de nuestra biblioteca de más de 10,000 preguntas. Las preguntas reales sobre esto Prueba C# y SQL no se puede obtener.

🧐 Question
Hard Classes and Constructors OOPs	Solve
What is the output of the following C# code?
Easy Arrays and Exceptions Arrays Exceptions	Solve
What is the output of the following C# code?
Medium Multiple Namespaces	Solve
Class Student exists in both firstnamespace and secondnamespace namespaces. Which of the following are the correct ways to use the Student class?
Medium Static and constructors OOPs	Solve
What is the output of the following C# code?
Medium Multi Select JOIN GROUP BY	Solve
Consider the following SQL table: How many rows does the following SQL query return?
Medium nth highest sales Nested queries User Defined Functions	Solve
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	Solve
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	Solve
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	Solve
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
	Hard Classes and Constructors OOPs	2 mins C#	Solve
What is the output of the following C# code?
	Easy Arrays and Exceptions Arrays Exceptions	2 mins C#	Solve
What is the output of the following C# code?
	Medium Multiple Namespaces	2 mins C#	Solve
Class Student exists in both firstnamespace and secondnamespace namespaces. Which of the following are the correct ways to use the Student class?
	Medium Static and constructors OOPs	3 mins C#	Solve
What is the output of the following C# code?
	Medium Multi Select JOIN GROUP BY	2 mins SQL	Solve
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	Solve
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	Solve
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	Solve
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	Solve
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
	Classes and Constructors OOPs	C#	Hard	2 mins	Solve
What is the output of the following C# code?
	Arrays and Exceptions Arrays Exceptions	C#	Easy	2 mins	Solve
What is the output of the following C# code?
	Multiple Namespaces	C#	Medium	2 mins	Solve
Class Student exists in both firstnamespace and secondnamespace namespaces. Which of the following are the correct ways to use the Student class?
	Static and constructors OOPs	C#	Medium	3 mins	Solve
What is the output of the following C# code?
	Multi Select JOIN GROUP BY	SQL	Medium	2 mins	Solve
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	Solve
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	Solve
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	Solve
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	Solve
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

Con Adaface, pudimos optimizar nuestro proceso de selección inicial en más de un 75 %, liberando un tiempo precioso tanto para los gerentes de contratación como para nuestro equipo de adquisición de talentos.

Brandon Lee, jefe de personas, Love, Bonito

Preview this test

Ver cuadro de mando de muestra

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Prueba C# y SQL 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 Prueba C# y SQL 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

Ver cuadro de mando de muestra

Preview this test

Ver cuadro de mando de muestra

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

Ver cuadro de mando de muestra

About the C# & SQL Assessment Test

Why you should use Pre-employment C# & SQL Online Test?

The Prueba C# y SQL 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:

C# de sintaxis básicos
C# oops
Estructuras de datos C#
Operaciones SQL CRUD
SQL se une e índices
Programación C#
Manejo de excepciones en C#
Principios de diseño orientados a objetos en C#
Comprensión e implementación de algoritmos en C#
Conceptos y diseño de bases de datos relacionales en SQL

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 C# & SQL Online Test?

C# Casics de sintaxis
C# Los conceptos básicos de sintaxis se refieren a las reglas fundamentales y la estructura utilizadas para escribir el código C#. Esto incluye comprender los tipos de datos, variables, operadores, estructuras de control y operaciones básicas de entrada/salida. Evaluar esta habilidad asegura que los candidatos tengan una comprensión sólida de los bloques de construcción fundamentales de la programación de C#.
c# oops
c# oops (programación orientada a objetos) implica diseñar y crear clases, objetos, objetos y sus interacciones para resolver problemas del mundo real. Esta habilidad mide la capacidad de un candidato para utilizar principios orientados a objetos, como la encapsulación, la herencia y el polimorfismo para desarrollar un código flexible y modular.
C# estructuras de datos
C# Estructuras de datos son contenedores para contenedores Organizar y almacenar datos de manera eficiente. Esto incluye matrices, listas, colas, pilas y diccionarios. La evaluación de esta habilidad ayuda a evaluar la comprensión de un candidato de los diferentes tipos de estructuras de datos y su aplicación para resolver desafíos de programación complejos.
operaciones SQL CRUD
SQL CRUD (Crear, leer, actualizar, actualizar, Eliminar) las operaciones implican manipular los datos almacenados en una base de datos. Esta habilidad prueba la competencia de un candidato al escribir declaraciones SQL para realizar operaciones como insertar registros, recuperar datos, actualizar los registros existentes y eliminar registros de las tablas de bases de datos.
SQL se une e indexes
SQL se une e índices son conceptos importantes en la gestión de bases de datos que facilitan la recuperación de datos eficiente y optimizada. Esta habilidad mide la capacidad de un candidato para escribir consultas SQL que implican unir tablas basadas en columnas comunes y utilizar índices para mejorar el rendimiento de la consulta.
C# Programación
C# La programación evalúa el conocimiento general de un candidato y Competencia en el lenguaje de programación C#. Esto incluye una combinación de sintaxis, conceptos orientados a objetos, estructuras de datos y habilidades de resolución de problemas. La evaluación de esta habilidad proporciona a los reclutadores una comprensión integral de la capacidad de un candidato para desarrollar aplicaciones con C#.
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 Prueba C# y SQL to be based on.
Variables C#
Tipos de datos C#
Operadores de C#
C# declaraciones condicionales
C# bucles
Matrices C#
Listas de C#
Diccionarios C#
Clases C#
C# herencia
Interfaces C#
C# polimorfismo
Encapsulación C#
Abstracción C#
C# Manejo de excepciones
Declaración de creación de SQL
Declaración de inserción SQL
Instrucción SQL Seleccionar
Declaración de actualización de SQL
Declaración de eliminación de SQL
SQL JOIN
SQL Inner Join
SQL Outer Join
Índice de SQL
Clave primaria de SQL
Clave extranjera de SQL
Grupo sql por
Orden sql por
Subcontratas SQL
C# Linq
C# Expresiones Lambda
Delegados C#
Eventos de C#
C# tipos anulables
C# Genores
C# múltiples lectura
Transacciones SQL
Procedimientos almacenados SQL
Vistas SQL
C# Archivo IO
Serialización de C#
Reflexión C#
C# Expresiones regulares
Funciones de agregación SQL
Normalización de SQL
Prueba unitaria de C#
Depuración de C#
Desencadenantes de SQL
C# Manejo de errores
Subcontratas SQL
C# Manejo de excepciones
Restricciones SQL
Optimización del código C#
Gestión de memoria C#
Funciones almacenadas de SQL
Programación impulsada por eventos C#
Patrones de diseño C#
Servicios web C#
Vistas SQL
Networking C#
Conectividad de la base de datos C#
SQL se une
Desarrollo de C# GUI
Marco de entidad C#
Ajuste de rendimiento de SQL

Preview this test

Ver cuadro de mando de muestra

What roles can I use the C# & SQL Online Test for?

Desarrollador de C#
Administrador de bases de datos SQL

How is the C# & 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

Optimización de consultas SQL para el rendimiento
Normalización y desnormalización de la base de datos en SQL
Trabajar con colecciones y genéricos en C#
Comprender y usar Linq en C#
Trabajar con procedimientos almacenados en SQL
Comprender e implementar la herencia en C#
Comprender y usar la indexación en SQL
Implementación de la programación múltiple y asincrónica en C#
Comprender y usar transacciones en SQL
Prueba y depuración en C#

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

Preview this test

Ver cuadro de mando de muestra

Los gerentes de contratación sintieron que a través de las preguntas técnicas que hicieron durante las entrevistas del panel, pudieron decir qué candidatos tenían mejores puntajes y diferenciarse de aquellos que no obtuvieron tan buenos puntajes. Ellos son altamente satisfecho con la calidad de los candidatos preseleccionados con la selección de Adaface.

85%

Reducción en el tiempo de detección

Ver estudio de caso completo

C# & SQL Hiring Test Preguntas frecuentes

¿Puedo combinar múltiples habilidades en una evaluación personalizada?

Si, absolutamente. Las evaluaciones personalizadas se configuran en función de la descripción de su trabajo e incluirán preguntas sobre todas las habilidades imprescindibles que especifique.

¿Tiene alguna característica anti-trato o procuración en su lugar?

Tenemos las siguientes características anti-trate en su lugar:

Preguntas no postradas
Procuración de IP
Procedor web
Procedores de cámara web
Detección de plagio
navegador seguro

Lea más sobre las funciones de procuración.

¿Cómo interpreto los puntajes de las pruebas?

Lo principal a tener en cuenta es que una evaluación es una herramienta de eliminación, no una herramienta de selección. Una evaluación de habilidades está optimizada para ayudarlo a eliminar a los candidatos que no están técnicamente calificados para el rol, no está optimizado para ayudarlo a encontrar el mejor candidato para el papel. Por lo tanto, la forma ideal de usar una evaluación es decidir un puntaje umbral (generalmente del 55%, lo ayudamos a comparar) e invitar a todos los candidatos que obtienen un puntaje por encima del umbral para las próximas rondas de la entrevista.

¿Para qué nivel de experiencia puedo usar esta prueba?

Cada evaluación de AdaFace está personalizada para su descripción de trabajo/ persona candidata ideal (nuestros expertos en la materia elegirán las preguntas correctas para su evaluación de nuestra biblioteca de más de 10000 preguntas). Esta evaluación se puede personalizar para cualquier nivel de experiencia.

¿Cada candidato tiene las mismas preguntas?

Sí, te hace mucho más fácil comparar los candidatos. Las opciones para las preguntas de MCQ y el orden de las preguntas son aleatorizados. Tenemos características anti-trato/procuración en su lugar. En nuestro plan empresarial, también tenemos la opción de crear múltiples versiones de la misma evaluación con cuestiones de niveles de dificultad similares.