C# & SQL Online Test

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

C＃开发人员 SQL数据库管理员

About the test:

C＃SQL测试使用基于方案的MCQ来评估候选者对C＃编程语言和SQL数据库的理解。该测试评估了候选人对C＃语法，面向对象的编程（OOP）概念和.NET框架的知识以及其编写和调试C＃代码的能力。它还评估了他们对SQL语法和用法的熟悉程度，SQL命令，用于创建，查询和修改关系数据库和表格，数据库设计，归一化以及索引，以及它们在C＃中编写有效且优化的SQL查询的能力。

Covered skills:

C＃语法基础知识
C＃数据结构
SQL加入和索引

C＃哎呀
SQL CRUD操作
C＃编程

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9 reasons why

Adaface C# & SQL Test is the most accurate way to shortlist C＃开发人员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:

理解和实施C＃语法基础知识
在C＃中应用面向对象的编程概念
使用C＃中的各种数据结构
在SQL中执行CRUD操作
在SQL中有效利用和索引
在现实世界中应用C＃编程技能

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

这些只是我们库中有10,000多个问题的一个小样本。关于此的实际问题 C＆SQL测试将是不可行的.

🧐 Question
Hard Classes and Constructors OOPs	Try practice test
What is the output of the following C# code?
Easy Arrays and Exceptions Arrays Exceptions	Try practice test
What is the output of the following C# code?
Medium Multiple Namespaces	Try practice test
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	Try practice test
What is the output of the following C# code?
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
	Hard Classes and Constructors OOPs	2 mins C#	Try practice test
What is the output of the following C# code?
	Easy Arrays and Exceptions Arrays Exceptions	2 mins C#	Try practice test
What is the output of the following C# code?
	Medium Multiple Namespaces	2 mins C#	Try practice test
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#	Try practice test
What is the output of the following C# code?
	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
	Classes and Constructors OOPs	C#	Hard	2 mins	Try practice test
What is the output of the following C# code?
	Arrays and Exceptions Arrays Exceptions	C#	Easy	2 mins	Try practice test
What is the output of the following C# code?
	Multiple Namespaces	C#	Medium	2 mins	Try practice test
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	Try practice test
What is the output of the following C# code?
	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

借助 Adaface，我们能够将初步筛选流程优化高达 75% 以上，为招聘经理和我们的人才招聘团队节省了宝贵的时间！

Brandon Lee, 人事主管, Love, Bonito

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment C＆SQL测试 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 C＆SQL测试 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 C# & SQL Assessment Test

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

The C＆SQL测试 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＃语法基础知识
C＃哎呀
C＃数据结构
SQL CRUD操作
SQL加入和索引
C＃编程
C＃中的例外处理
C＃中面向对象的设计原理
了解和实现C＃中的算法
SQL中的关系数据库概念和设计

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＃语法基础知识
c＃语法基础知识是指用于编写C＃代码的基础规则和结构。这包括了解数据类型，变量，操作员，控制结构和基本输入/输出操作。评估此技能可确保候选人对C＃编程的基本构建块有着深入的了解。
c＃oops
c＃oops（面向对象的编程）涉及设计和创建类，对象，对象，以及他们的互动来解决现实世界中的问题。该技能衡量了候选人利用面向对象的原理（例如封装，继承和多态性）来开发灵活和模块化代码的能力。
c＃c＃数据结构
<p> <p> c＃数据结构是用于容器的容器有效地组织和存储数据。这包括数组，列表，队列，堆栈和词典。评估此技能有助于评估候选人对不同类型的数据结构的理解及其在解决复杂编程挑战中的应用。
sql crud操作
sql crud（创建，读取，读取，更新，更新，更新，更新，更新，删除）操作涉及操纵数据库中存储的数据。该技能测试了候选人在编写SQL语句中的熟练程度，以执行操作，例如插入记录，检索数据，更新现有记录以及从数据库表中删除记录。
sql Join and Indexes
SQL JOINS，索引是数据库管理中的重要概念，可促进高效且优化的数据检索。该技能衡量了候选人编写SQL查询的能力，该查询涉及基于常见列连接表并利用索引来提高查询性能。
c＃c＃编程
<p> c＃c＃编程评估候选人的整体知识和整体知识，精通C＃编程语言。这包括语法，面向对象的概念，数据结构和解决问题的技能的组合。评估此技能为招聘人员提供了对候选人使用C＃开发应用程序的能力的全面了解。
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 C＆SQL测试 to be based on.
C＃变量
C＃数据类型
C＃运营商
C＃条件语句
C＃循环
C＃数组
C＃列表
C＃字典
C＃类
C＃继承
C＃接口
C＃多态性
C＃封装
C＃抽象
C＃异常处理
SQL创建语句
SQL插入语句
SQL选择语句
SQL Update语句
SQL删除语句
SQL加入
SQL内联机
SQL外部连接
SQL索引
SQL主键
SQL外键
SQL组
SQL订购
SQL子征服
C＃linq
C＃lambda表达式
C＃委托
C＃事件
C＃无效类型
c＃generics
C＃多线程
SQL交易
SQL存储过程
SQL视图
C＃文件IO
C＃序列化
C＃反射
C＃正则表达式
SQL聚合功能
SQL归一化
C＃单元测试
C＃调试
SQL触发器
C＃错误处理
SQL子征服
C＃异常处理
SQL约束
C＃代码优化
C＃内存管理
SQL存储的功能
C＃事件驱动的编程
C＃设计模式
C＃Web服务
SQL视图
C＃网络
C＃数据库连接
SQL加入
C＃GUI开发
C＃实体框架
SQL性能调整

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

C＃开发人员
SQL数据库管理员

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