Mindtween Infotech - .Net Basic Test

1. You can override private virtual methods?

True

False

Private methods cannot be accessed or overridden by derived classes. They are only accessible within the class they are declared in. Therefore, it is not possible to override private virtual methods.

Explanation

Private methods cannot be accessed or overridden by derived classes. They are only accessible within the class they are declared in. Therefore, it is not possible to override private virtual methods.

2. When do you absolutely have to declare a class as abstract?

When at least one of the methods in the class is abstract

When all the methods in the class is abstract

A class must be declared as abstract when at least one of its methods is abstract. This is because an abstract method is a method without a body, and it is meant to be overridden by the subclasses. By declaring a class as abstract, it indicates that the class is meant to be inherited and extended by other classes, and it cannot be instantiated on its own.

Explanation

A class must be declared as abstract when at least one of its methods is abstract. This is because an abstract method is a method without a body, and it is meant to be overridden by the subclasses. By declaring a class as abstract, it indicates that the class is meant to be inherited and extended by other classes, and it cannot be instantiated on its own.

3. In SQL, which operator is used in character string comparison with pattern matching?

Like

Between ... And

Equal operator

Set operator

The operator used in character string comparison with pattern matching in SQL is "Like". This operator is used to match a specific pattern within a string. It allows the use of wildcard characters such as "%" to represent any sequence of characters and "_" to represent any single character. This operator is commonly used in SQL queries to search for specific patterns or values within character strings.

Explanation

The operator used in character string comparison with pattern matching in SQL is "Like". This operator is used to match a specific pattern within a string. It allows the use of wildcard characters such as "%" to represent any sequence of characters and "_" to represent any single character. This operator is commonly used in SQL queries to search for specific patterns or values within character strings.

4. Do you think that you are capable of training a team of freshers, and make them experts in .NET technology?

Yes

No

Not Sure

The given correct answer is "Yes". This implies that the person believes they are capable of training a team of freshers and making them experts in .NET technology. This suggests that the person has confidence in their abilities and knowledge in the .NET technology field, and believes they can effectively teach and mentor others to become experts in it.

Explanation

The given correct answer is "Yes". This implies that the person believes they are capable of training a team of freshers and making them experts in .NET technology. This suggests that the person has confidence in their abilities and knowledge in the .NET technology field, and believes they can effectively teach and mentor others to become experts in it.

5. __________________ removes all rows from a table without logging the individual row deletions.

Drop

Delete

Alter

Truncate

Truncate is the correct answer because it removes all rows from a table without logging the individual row deletions. Unlike the Delete command, which deletes rows one by one and logs each deletion, Truncate is a faster operation as it removes all rows at once without logging each deletion. Drop, Alter, and Delete do not have the same functionality as Truncate in terms of removing all rows without logging.

Explanation

Truncate is the correct answer because it removes all rows from a table without logging the individual row deletions. Unlike the Delete command, which deletes rows one by one and logs each deletion, Truncate is a faster operation as it removes all rows at once without logging each deletion. Drop, Alter, and Delete do not have the same functionality as Truncate in terms of removing all rows without logging.

6. How does ASP.NET store SessionIDs by default?

In cache

In cookies

In a global variable

In URL strings or in a database

ASP.NET stores SessionIDs by default in cookies. This means that when a user visits a website, a unique SessionID is generated and stored in a cookie on the user's browser. This allows the server to identify and track the user's session as they navigate through the website. Storing SessionIDs in cookies is a common practice because it is secure and efficient, as the SessionID is automatically sent back to the server with each subsequent request.

Explanation

ASP.NET stores SessionIDs by default in cookies. This means that when a user visits a website, a unique SessionID is generated and stored in a cookie on the user's browser. This allows the server to identify and track the user's session as they navigate through the website. Storing SessionIDs in cookies is a common practice because it is secure and efficient, as the SessionID is automatically sent back to the server with each subsequent request.

7. In SQL, which clause returns only one copy of each set of duplicate rows selected?

Unique

Group By

Distinct

None of the above

The Distinct clause in SQL is used to eliminate duplicate rows from the result set of a query. It returns only one copy of each set of duplicate rows selected. Therefore, the correct answer is Distinct.

Explanation

The Distinct clause in SQL is used to eliminate duplicate rows from the result set of a query. It returns only one copy of each set of duplicate rows selected. Therefore, the correct answer is Distinct.

8. System.dll is?

Private assembly

Shared assembly

Not an assembly

None

System.dll is a shared assembly. A shared assembly is a component that can be used by multiple applications. It is stored in the Global Assembly Cache (GAC) and can be accessed by any application on the system. System.dll is a commonly used assembly in the .NET framework that contains various system-level functionalities and classes that can be used by different applications.

Explanation

System.dll is a shared assembly. A shared assembly is a component that can be used by multiple applications. It is stored in the Global Assembly Cache (GAC) and can be accessed by any application on the system. System.dll is a commonly used assembly in the .NET framework that contains various system-level functionalities and classes that can be used by different applications.

9. Which of these is not a .net CMS ?

Kentico

Umbraco

Sitefinity

Drupal

Drupal is not a .net CMS. It is an open-source CMS written in PHP. Kentico, Umbraco, and Sitefinity are all .net CMS options.

Explanation

Drupal is not a .net CMS. It is an open-source CMS written in PHP. Kentico, Umbraco, and Sitefinity are all .net CMS options.

10. When will the garbage collector run?

Every 15 min

Everyday at 1:00 am

When the application is low on memory

Randomly based on resource load on the system

The garbage collector in a system runs randomly based on the resource load. This means that it runs when the system is low on memory and needs to free up space by collecting and disposing of unused objects. The timing of the garbage collector is not fixed and can vary depending on the demands of the system at any given time.

Explanation

The garbage collector in a system runs randomly based on the resource load. This means that it runs when the system is low on memory and needs to free up space by collecting and disposing of unused objects. The timing of the garbage collector is not fixed and can vary depending on the demands of the system at any given time.

11. What is CLS ?

Compiler Language System

Common Language System

Common Language Specification

None

CLS stands for Common Language Specification. It is a set of rules and guidelines that programming languages must adhere to in order to ensure interoperability and compatibility within the .NET framework. It defines a common set of types, naming conventions, and rules that all .NET languages should follow. By adhering to the CLS, developers can write code in one .NET language and use it seamlessly with code written in another .NET language. This promotes code reuse and simplifies the process of integrating different components and libraries within the .NET ecosystem.

Explanation

CLS stands for Common Language Specification. It is a set of rules and guidelines that programming languages must adhere to in order to ensure interoperability and compatibility within the .NET framework. It defines a common set of types, naming conventions, and rules that all .NET languages should follow. By adhering to the CLS, developers can write code in one .NET language and use it seamlessly with code written in another .NET language. This promotes code reuse and simplifies the process of integrating different components and libraries within the .NET ecosystem.

12. Which tool would you use, if you want to see all the methods of a particular class in the application.

Class viewer

Object browser

Class explorer

Object explorer

The correct answer is "Object browser" because it is a tool that allows you to view and navigate through the objects and classes in an application. It provides a detailed view of the methods, properties, and events of a particular class, making it a suitable choice for seeing all the methods of a specific class in the application.

Explanation

The correct answer is "Object browser" because it is a tool that allows you to view and navigate through the objects and classes in an application. It provides a detailed view of the methods, properties, and events of a particular class, making it a suitable choice for seeing all the methods of a specific class in the application.

13. How could you avoid to receive focus on a particular control while user presses Tab key?

Set TabStop Property to false

Set TabIndex Property to 1

Set AcceptTab Property to false

Using Dock Property

Setting the TabStop property to false for a particular control will prevent it from receiving focus when the user presses the Tab key. This means that when the user navigates through the controls using the Tab key, this specific control will be skipped and focus will move to the next control in the tab order.

Explanation

Setting the TabStop property to false for a particular control will prevent it from receiving focus when the user presses the Tab key. This means that when the user navigates through the controls using the Tab key, this specific control will be skipped and focus will move to the next control in the tab order.