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About the test:

The Ado.Net Online Test evaluates a candidate's knowledge and skills in ADO.NET, focusing on topics such as data access, database connectivity, data manipulation, data binding, data controls, data providers, entity framework, LINQ to SQL, ADO.NET transactions, and disconnected and connected data access.

Covered skills:

  • Database Connectivity
  • Data Binding
  • Data Providers
  • LINQ to SQL
  • Disconnected Data Access
  • Data Access
  • Data Manipulation
  • Data Controls
  • Entity Framework
  • ADO.NET Transactions
  • Connected Data Access

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9 reasons why
9 reasons why

Adaface Ado.Net Test is the most accurate way to shortlist .NET Developers

Reason #1

Tests for on-the-job skills

The Ado.Net 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:

  • Ability to establish database connections and interact with databases using ADO.NET
  • Understanding of data access techniques and best practices in ADO.NET
  • Proficiency in manipulating data with ADO.NET
  • Knowledge of data binding concepts and implementation in ADO.NET
  • Experience with various data controls in ADO.NET
  • Understanding of different data providers and their usage in ADO.NET
  • Familiarity with Entity Framework and its usage for data access
  • Proficiency in LINQ to SQL and its implementation for data retrieval
  • Ability to work with ADO.NET transactions for data consistency and integrity
  • Understanding of disconnected data access and its advantages in ADO.NET
  • Proficiency in connected data access techniques in ADO.NET
Reason #2

No trick questions

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

These are just a small sample from our library of 10,000+ questions. The actual questions on this Ado.Net Test will be non-googleable.

🧐 Question


AppDomain Resource Scoping
Configuration Management
Resource Scoping
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Consider a scenario where you have a .NET application that needs to load different configurations for different components running in separate AppDomains. You have the following code structure:
The `ConfigManager` class is designed to load and store configurations for different domains. What will be the output of this program, assuming `ConfigA.xml` and `ConfigB.xml` contain distinct settings?
A: Config in DomainA: [Settings from ConfigA.xml], Config in DomainB: [Settings from ConfigB.xml]
B: Config in DomainA: null, Config in DomainB: null
C: Config in DomainA: [Settings from ConfigB.xml], Config in DomainB: [Settings from ConfigA.xml]
D: A runtime exception is thrown due to cross-domain operation.
E: Config in DomainA: [Settings from ConfigA.xml], Config in DomainB: [Settings from ConfigA.xml]
F: The output is unpredictable and depends on the runtime environment.


IDisposable Pattern
Garbage Collection
IDisposable Pattern
Memory Management
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Consider the following .NET C# code snippet implementing IDisposable pattern:
What is true about the garbage collection and resource management in this code?
A: The finalizer will always be called when the object is garbage collected.
B: The `Dispose` method is only called when explicitly invoked.
C: Managed resources will be freed in the finalizer.
D: Unmanaged resources are only freed if `Dispose` is called with `true`.
E: The `GC.SuppressFinalize` method prevents the finalizer from being called.
F: The `using` statement ensures that unmanaged resources are always freed.


Remoting and Object Lifetime
.NET Remoting
Object Lifetime
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In a .NET application, you are using .NET Remoting to communicate between different application domains. You have the following server-side code:
This `RemoteObject` class is hosted in one application domain and accessed from another. Considering the lease settings (InitialLeaseTime, SponsorshipTimeout, RenewOnCallTime), what will happen if a client accesses the `GetData` method every 3 seconds?
A: The object will be disconnected after 5 seconds, regardless of the calls.
B: The lease will be renewed, and the object remains accessible as long as it's called every 3 seconds.
C: The object will be disconnected after 7 seconds, even with the regular calls.
D: An exception will be thrown due to lease timeout.
E: The lease will be renewed indefinitely without disconnection.
F: The object will be disconnected only if there is a call after 5 seconds but within 7 seconds.
🧐 Question🔧 Skill


AppDomain Resource Scoping
Configuration Management
Resource Scoping

3 mins

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IDisposable Pattern
Garbage Collection
IDisposable Pattern
Memory Management

2 mins

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Remoting and Object Lifetime
.NET Remoting
Object Lifetime

3 mins

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🧐 Question🔧 Skill💪 Difficulty⌛ Time
AppDomain Resource Scoping
Configuration Management
Resource Scoping
Medium3 mins
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IDisposable Pattern
Garbage Collection
IDisposable Pattern
Memory Management
Medium2 mins
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Remoting and Object Lifetime
.NET Remoting
Object Lifetime
Medium3 mins
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Reason #4

1200+ customers in 75 countries

customers in 75 countries

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!

Brandon Lee, Head of People, Love, Bonito

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Ado.Net 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 Ado.Net 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.

invite candidates
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.

test completion rate
Reason #9

Advanced Proctoring

Learn more

About the Ado.Net Assessment Test

Why you should use Pre-employment Ado.Net Online Test?

The Ado.Net 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:

  • Understanding and implementing ADO.NET framework
  • Effective data access and database connectivity
  • Manipulating data using ADO.NET
  • Binding data to user interface controls
  • Utilizing data providers in ADO.NET
  • Working with Entity Framework for data access
  • Applying LINQ to SQL for querying databases
  • Implementing transactions in ADO.NET
  • Implementing disconnected data access
  • Performing connected data access

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 Ado.Net Online Test?


    ADO.NET is a data access technology in the .NET framework that enables developers to interact with databases. It provides a set of classes and libraries that allow efficient and secure access to data. This skill is measured in the test to assess a candidate's proficiency in using ADO.NET for data retrieval, manipulation, and database connectivity.

  • Data Access

    Data access refers to the process of retrieving and manipulating data from a database. It involves reading, writing, and updating data using appropriate techniques and technologies. Measuring this skill in the test helps evaluate a candidate's understanding of different data access techniques and their ability to efficiently retrieve and manage data.

  • Database Connectivity

    Database connectivity is the ability to establish and maintain a connection between an application and a database server. It involves configuring connection settings, handling connection errors, and executing database operations. This skill is measured in the test to assess a candidate's knowledge of establishing and managing database connections using ADO.NET.

  • Data Manipulation

    Data manipulation refers to the process of modifying or transforming data stored in a database. It involves tasks such as inserting, updating, deleting, and querying data. Measuring this skill in the test helps evaluate a candidate's ability to write efficient and accurate data manipulation queries, ensuring data integrity and reliability.

  • Data Binding

    Data binding is the process of connecting a user interface element, such as a control or widget, to a data source for displaying, editing, and updating data. It allows for automatic synchronization of data changes between the user interface and the underlying data source. Measuring this skill in the test helps assess a candidate's understanding of data binding concepts and their ability to bind data effectively in ADO.NET applications.

  • Data Controls

    Data controls are user interface components that provide convenient ways to display and interact with data. These controls include grids, lists, and forms, which can be bound to data sources and automatically handle data rendering, editing, and navigation. Measuring this skill in the test helps evaluate a candidate's familiarity with different data controls in ADO.NET and their ability to use them appropriately in application development.

  • Data Providers

    Data providers are software components that enable ADO.NET to interact with specific database systems. They provide the necessary functionality and APIs to establish connections, execute queries, and retrieve and manipulate data. Measuring this skill in the test helps assess a candidate's knowledge of different data providers available in ADO.NET and their ability to work with specific databases.

  • Entity Framework

    Entity Framework is an object-relational mapping (ORM) framework provided by Microsoft. It allows developers to work with data in the form of objects and classes, abstracting away the complexities of underlying databases. Measuring this skill in the test helps evaluate a candidate's proficiency in using Entity Framework for database operations and understanding its features and benefits.

  • LINQ to SQL

    LINQ to SQL is a component of the .NET framework that provides a convenient way to query and manipulate relational databases using LINQ (Language-Integrated Query) syntax. It allows developers to write database queries using familiar language constructs, improving productivity and readability. Measuring this skill in the test helps assess a candidate's ability to write efficient LINQ to SQL queries and utilize the power of LINQ for data access.

  • ADO.NET Transactions

    ADO.NET transactions are used to ensure atomicity, consistency, isolation, and durability (ACID) properties of database operations. They enable multiple database operations to be treated as a single unit of work, allowing for rollback and commit operations. Measuring this skill in the test helps evaluate a candidate's understanding of transaction management in ADO.NET and their ability to implement robust and reliable database operations.

  • Disconnected Data Access

    Disconnected data access is a technique in ADO.NET that allows working with data in a disconnected manner, without keeping a continuous connection to the database server. It involves retrieving data into a dataset or a data table, making changes locally, and then synchronizing those changes with the database. Measuring this skill in the test helps assess a candidate's knowledge of disconnected data access techniques and their ability to work with disconnected data efficiently.

  • Connected Data Access

    Connected data access is a technique in ADO.NET that involves establishing and maintaining a continuous connection to the database server while working with data. It allows for real-time interaction with the database, immediately reflecting changes made by the application or other users. Measuring this skill in the test helps evaluate a candidate's proficiency in connected data access, including executing queries, managing connections, and handling concurrency issues.

  • 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 Ado.Net Test to be based on.

    ADO.NET Architecture
    Data connection in ADO.NET
    Command and CommandBuilder
    DataReader and DataAdapter
    Data binding with Windows Forms
    Data binding with ASP.NET
    Data controls: GridView, DataList, Repeater
    Data controls: DropDownList, RadioButtonList, CheckBoxList
    ADO.NET Data Providers: SQL Server, Oracle, MySQL, etc.
    Entity Framework: Model, Context, Entity CRUD Operations
    Entity Framework: Code First, Database First, Code First Migrations
    LINQ to SQL: Mapping, Querying, Updating
    Transactions in ADO.NET
    Disconnected Data Access: DataSet, DataTable, DataViews
    Connected Data Access: SqlCommand, SqlConnection, SqlDataAdapter
    Data manipulation with ADO.NET: Insert, Update, Delete
    Data retrieval with ADO.NET: SELECT queries
    Data manipulation with Entity Framework: Add, Update, Delete
    Data retrieval with Entity Framework: LINQ queries
    Data controls: DataGrid, ListView, FormView
    Database Connectivity: Connection pools, Connection strings
    ADO.NET and Web Services
    Data binding with WPF
    ADO.NET and XML
    Data caching with ADO.NET
    Data validation and error handling in ADO.NET
    ADO.NET performance tuning
    Implementing stored procedures with ADO.NET
    Data access security with ADO.NET
    Working with ADO.NET in multi-tier architectures
    ADO.NET and LINQ
    ADO.NET and MVC frameworks
    Database transactions and isolation levels in ADO.NET
    Implementing batch updates with ADO.NET
    ADO.NET and data encryption
    ADO.NET and data compression
    Implementing data paging and sorting with ADO.NET
    Optimistic and pessimistic concurrency in ADO.NET
    ADO.NET and data synchronization
    ADO.NET and data replication
    Implementing data caching strategies with ADO.NET
    ADO.NET and data serialization
    ADO.NET and data partitioning
    Design patterns in ADO.NET
    ADO.NET and big data
    Working with database views in ADO.NET
    ADO.NET and NoSQL databases
    Unit testing ADO.NET code
    ADO.NET and cloud databases
    Implementing data access layer with ADO.NET
    ADO.NET and distributed databases
    ADO.NET and microservices architecture
    Implementing data migration with ADO.NET
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What roles can I use the Ado.Net Online Test for?

  • .NET Developer
  • Ado .NET Developer

How is the Ado.Net 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

  • Optimizing database performance
  • Designing and maintaining database schemas
  • Securing data in ADO.NET applications
  • Implementing data caching strategies
  • Handling concurrency and data conflicts
  • Data synchronization across multiple databases
  • Working with stored procedures and SQL queries
  • Implementing data validation and constraints
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The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.

reduction in screening time

Ado.Net Hiring Test FAQs

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

  • Non-googleable questions
  • IP proctoring
  • Screen proctoring
  • Web proctoring
  • Webcam proctoring
  • Plagiarism detection
  • Secure browser
  • Copy paste protection

Read more about the proctoring features.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.

I'm a candidate. Can I try a practice test?

No. Unfortunately, we do not support practice tests at the moment. However, you can use our sample questions for practice.

What is the cost of using this test?

You can check out our pricing plans.

Can I get a free trial?

Yes, you can sign up for free and preview this test.

I just moved to a paid plan. How can I request a custom assessment?

Here is a quick guide on how to request a custom assessment on Adaface.

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