DotNET Quiz: Can You Pass This Test?
This is a DotNet Quiz, can you pass this test? This application is perfect for ensuring just how much you know about this resource that helps you to create computer applications. Do give it a shot and get to find out just how much you understand this resource, all the best and keep a lookout for other tests that will be helpful to you. All the best!
Questions and Answers
- 1.
_________ is the most important component of the framework?
- A.
ASP
- B.
Common Language Runtime
- C.
Java Virtual Machine
- D.
JScript
Correct Answer
B. Common Language RuntimeExplanation
The Common Language Runtime (CLR) is the most important component of the framework because it provides the necessary runtime environment for executing and managing .NET applications. It is responsible for handling memory management, garbage collection, security, and exception handling. The CLR also provides a common type system and enables interoperability between different programming languages. Overall, the CLR plays a crucial role in ensuring the efficient and reliable execution of .NET applications.Rate this question:
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- 2.
What output would you expect from the following code?using System;class A{public virtual void F() { Console.Write("A"); }}class B: A{public override void F() { Console.Write("B"); }}class C: B {new public virtual void F() { Console.Write("C"); }}class D: C{public override void F() { Console.Write("D"); }}class Test{static void Main() {D d = new D();A a = d;B b = d;C c = d;a.F();b.F();c.F();d.F();}}
- A.
BBDD
- B.
BBCD
- C.
ABCD
- D.
ABBC
Correct Answer
A. BBDDExplanation
The code defines four classes: A, B, C, and D. Class A has a virtual method F() that prints "A", class B overrides the F() method and prints "B", class C hides the F() method with a new virtual method that prints "C", and class D overrides the F() method and prints "D". In the Main() method, an object of class D is created and assigned to variables of types A, B, and C. When the F() method is called on each of these variables, the output is "B" because the method is overridden in class B, "B" because the method is still overridden in class B, "D" because the method is overridden in class D, and "D" because the method is still overridden in class D. Therefore, the expected output is "BBDD".Rate this question:
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- 3.
Which of the following is used to access the registry from C# code?
- A.
System.MarshalByRefObject
- B.
System.Environment
- C.
Microsoft.Win32
- D.
System.LocalDataStoreSlot
Correct Answer
C. Microsoft.Win32Explanation
The Microsoft.Win32 namespace in C# provides classes and methods that allow access to the Windows registry. The registry is a hierarchical database that stores configuration settings and options for the operating system and other software applications. Therefore, Microsoft.Win32 is the correct option for accessing the registry from C# code.Rate this question:
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- 4.
Where are Shared Assemblies stored?
- A.
In a stack.
- B.
In the Debug Folder
- C.
In the Global Assembly Cache
- D.
Queue.
Correct Answer
C. In the Global Assembly CacheExplanation
Shared Assemblies are stored in the Global Assembly Cache (GAC). The GAC is a central repository for storing and managing shared assemblies, which are assemblies that can be accessed by multiple applications on a computer. Storing shared assemblies in the GAC allows for easy versioning, sharing, and reuse of common components across different applications. This ensures that the assemblies are available to all applications on the computer and eliminates the need for each application to have its own copy of the assembly.Rate this question:
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- 5.
When the 'Finally' block of c# code is executed?
- A.
Only if 'Try' block was executed
- B.
Only if 'Catch' block was executed
- C.
Any one of 'Try'/'Catch' was executed
- D.
Both a and b
Correct Answer
C. Any one of 'Try'/'Catch' was executedExplanation
The 'Finally' block of C# code is executed regardless of whether the 'Try' or 'Catch' block was executed. It is used to specify a block of code that will always be executed, regardless of whether an exception is thrown or caught. This ensures that certain cleanup or resource release operations are always performed, regardless of the outcome of the code in the 'Try' or 'Catch' block.Rate this question:
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- 6.
What does the keyword virtual mean in the method definition?
- A.
The method can be over-ridden.
- B.
The method can be overloaded
- C.
Method can be inherited
- D.
Abstract class
Correct Answer
A. The method can be over-ridden.Explanation
The keyword "virtual" in a method definition indicates that the method can be overridden in a derived class. This means that a subclass can provide its own implementation of the method, which will be used instead of the implementation in the base class. This allows for polymorphism and dynamic method dispatch, as the appropriate method implementation will be determined at runtime based on the actual type of the object.Rate this question:
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- 7.
What is a multicast delegate?
- A.
Points to several events
- B.
It’s a delegate that points to and eventually fires off several methods.
- C.
Points to single method
- D.
Delegate that can be casted
Correct Answer
B. It’s a delegate that points to and eventually fires off several methods.Explanation
A multicast delegate is a delegate that can point to and eventually fire off several methods. This means that when the multicast delegate is invoked, it will execute all the methods that it is currently pointing to. It provides a convenient way to handle multiple events or execute multiple methods simultaneously.Rate this question:
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- 8.
Which tools would be set to create the .snk(Strong Names) files to store the public/private keys in?
- A.
Use the ilasm.exe utility
- B.
Use the sn.exe utility
- C.
Use the gacutil.exe utility
- D.
Use the resgen.exe utility
Correct Answer
B. Use the sn.exe utilityExplanation
The sn.exe utility is used to create .snk (Strong Names) files to store the public/private keys. This tool is specifically designed for managing strong name keys in .NET applications. It allows developers to generate key pairs, sign assemblies with strong names, and manage strong name settings. The other tools mentioned in the options (ilasm.exe, gacutil.exe, and resgen.exe) do not have the functionality to create .snk files.Rate this question:
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- 9.
If a method is declared as virtual, then any derived class
- A.
May provide an alternative (overridden) version of it with exactly the same parameters
- B.
Must provide an alternative (overridden) version of it with exactly the same parameters
- C.
May provide an alternative (overridden) version of it with the same or different parameters
- D.
May provide an alternative (overridden) version of it with the same or different parameters
Correct Answer
A. May provide an alternative (overridden) version of it with exactly the same parametersExplanation
If a method is declared as virtual, any derived class may provide an alternative (overridden) version of it with exactly the same parameters. This means that the derived class can define its own implementation of the method while keeping the same method signature (parameters). This allows for polymorphism, where the appropriate method is called based on the actual type of the object at runtime.Rate this question:
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- 10.
Only one of the following statements is false. Which one?
- A.
Arrays are of a fixed size, but ArrayLists can grow indefinitely
- B.
There is a built-in method to sort arrays but not to sort ArrayLists.
- C.
Indices for arrays must be integers, but for ArrayLists can be anything.
- D.
Arrays can be multi-dimensional but ArrayLists have only one dimension.
Correct Answer
C. Indices for arrays must be integers, but for ArrayLists can be anything.Explanation
This statement is false because indices for both arrays and ArrayLists must be integers. In both cases, the index represents the position of an element in the collection, and it is always an integer value.Rate this question:
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- 11.
In your program, you've included a ComboBox control that will hold a list of month names. The month names can be retrieved into a string array. Which flow control statement would best let you transfer the names into the ComboBox?
- A.
For...Next
- B.
For Each...Next
- C.
Do...Loop
- D.
If...Then...Else
Correct Answer
B. For Each...NextExplanation
The For Each...Next flow control statement would be the best choice to transfer the names into the ComboBox. This statement allows you to iterate over each item in the string array and transfer them one by one into the ComboBox. It ensures that every item in the array is processed and transferred, making it the most suitable option for this task.Rate this question:
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- 12.
The _________method commits all pending changes within the DataSet.
- A.
Reject()
- B.
AcceptChanges( )
- C.
Rejectchanges()
- D.
Commit()
Correct Answer
B. AcceptChanges( )Explanation
The AcceptChanges() method is used to commit all pending changes within the DataSet. This means that any modifications made to the data in the DataSet will be permanently saved and the DataSet will reflect these changes.Rate this question:
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- 13.
_________ is the most important component of the framework?
- A.
ASP
- B.
Common Language Runtime
- C.
Java Virtual Machine
- D.
JScript
Correct Answer
B. Common Language RuntimeExplanation
The Common Language Runtime (CLR) is the most important component of the framework because it provides the necessary runtime environment for executing and managing .NET applications. It is responsible for several crucial tasks such as memory management, exception handling, security, and thread management. The CLR also enables interoperability between different programming languages by providing a common execution environment and a set of services that can be accessed by all languages targeting the .NET framework.Rate this question:
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- 14.
The discovery document is the webservice address followed by ______________.
- A.
DISCO
- B.
WSDL
- C.
Proxy
- D.
UDDI
Correct Answer
B. WSDLExplanation
The discovery document is the webservice address followed by WSDL. WSDL stands for Web Services Description Language, which is an XML-based language used to describe the functionalities and operations of a web service. It provides a standardized way for clients to understand how to interact with the web service by specifying the available methods, input and output parameters, and message formats. Therefore, the correct answer is WSDL.Rate this question:
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- 15.
What is the name of the JavaScript function generated by ASP's Page.RegisterClientScriptBlock method?
- A.
__doPostBack
- B.
__firePostBack
- C.
__submitForm
- D.
Postback
Correct Answer
A. __doPostBackExplanation
The correct answer is __doPostBack. The Page.RegisterClientScriptBlock method in ASP generates a JavaScript function called __doPostBack. This function is used to post back to the server and trigger a server-side event in ASP.NET.Rate this question:
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- 16.
Which of the following is not a Internet standard?
- A.
HTTP
- B.
XML
- C.
SOAP
- D.
PHP
Correct Answer
D. PHPExplanation
PHP is not a Internet standard. HTTP, XML, and SOAP are all Internet standards that are widely used in web development and communication. PHP, on the other hand, is a server-side scripting language that is commonly used for web development, but it is not considered an Internet standard.Rate this question:
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- 17.
What important standard is used to connect client browsers with web servers ?
- A.
HTTP
- B.
TCP/IP
- C.
ASP.NET
- D.
HTML
Correct Answer
B. TCP/IPExplanation
TCP/IP is the correct answer because it is a fundamental standard protocol used to establish connections between client browsers and web servers. TCP (Transmission Control Protocol) ensures reliable delivery of data packets, while IP (Internet Protocol) handles the addressing and routing of these packets across the internet. Together, TCP/IP enables seamless communication and data exchange between clients and servers, forming the backbone of internet connectivity.Rate this question:
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- 18.
What ASP.NET object is used to get information about the web servers ?
- A.
The Server object
- B.
The Application object
- C.
The Request object
- D.
The Response object
Correct Answer
A. The Server objectExplanation
The Server object in ASP.NET is used to get information about the web servers. It provides access to various properties and methods that allow developers to retrieve information about the server environment, such as the server's operating system, version of ASP.NET, and other server-specific details. This object is commonly used to perform server-side operations and interact with the server's resources.Rate this question:
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- 19.
What attribute must be set on a validator control for the validation to work ?
- A.
Validate
- B.
ValidateControl
- C.
ControlToBind
- D.
ControlToValidate
Correct Answer
D. ControlToValidateExplanation
The attribute that must be set on a validator control for the validation to work is "ControlToValidate". This attribute specifies the ID of the control that needs to be validated. By setting this attribute, the validator control knows which control to validate and can perform the necessary validation checks on it.Rate this question:
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- 20.
What HTML element is the asp:Label control rendered as when the target is Internet Explorer ?
- A.
- B.
- C.
- D.
Correct Answer
B.Explanation
The asp:Label control is rendered as a element when the target is Internet Explorer.Rate this question:
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- 21.
Given an ASP.NET Web Form called WebForm1, what class does the WebForm1 class inherit from by default ?
- A.
System.Web.Form
- B.
System.Web.GUI.Page
- C.
System.Web.UI.Page
- D.
System.Web.UI.Form
Correct Answer
C. System.Web.UI.PageExplanation
The correct answer is System.Web.UI.Page. In ASP.NET Web Forms, the WebForm1 class inherits from the Page class by default. The Page class is a part of the System.Web.UI namespace and provides the basic functionality for creating web pages in ASP.NET. It includes methods and properties that are commonly used in web forms, such as event handling and page lifecycle management.Rate this question:
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- 22.
What is the Web.config file used for ?
- A.
To store the global information and variable definitions for the application
- B.
Configures the time that the server-side codebehind module is called
- C.
To configure the web server
- D.
To configure the web browser
Correct Answer
A. To store the global information and variable definitions for the applicationExplanation
The Web.config file is used to store the global information and variable definitions for the application. This file is an XML-based configuration file that allows developers to specify various settings and parameters for their web application. It can contain settings such as database connection strings, session state configuration, application-level variables, and other application-specific configurations. By storing this information in the Web.config file, developers can easily manage and update these settings without modifying the application's source code.Rate this question:
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- 23.
What method must be overridden in a custom control ?
- A.
The Paint() method
- B.
The Control_Build() method
- C.
The Render() method
- D.
The default constructor
Correct Answer
C. The Render() methodExplanation
In order to customize the appearance and behavior of a custom control, the Render() method must be overridden. This method is responsible for rendering the control on the screen and allows developers to define their own logic for how the control should be displayed. By overriding the Render() method, developers can have full control over the visual representation of the custom control.Rate this question:
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- 24.
What is used to validate complex string patterns like an e-mail address ?
- A.
Extended expressions
- B.
Regular expressions
- C.
Irregular expressions
- D.
Basic expressions
Correct Answer
B. Regular expressionsExplanation
Regular expressions are used to validate complex string patterns like an e-mail address. Regular expressions are a sequence of characters that define a search pattern, allowing for pattern matching within strings. They provide a powerful and flexible way to validate and manipulate strings based on specific patterns. In the context of an e-mail address, regular expressions can be used to ensure that the address follows the correct format, including the presence of an "@" symbol, a valid domain name, and other necessary components.Rate this question:
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- 25.
What tool is used to manage the GAC ?
- A.
GacMgr.exe
- B.
GacSvr32.exe
- C.
GacUtil.exe
- D.
RegSvr.exe
Correct Answer
C. GacUtil.exeExplanation
GacUtil.exe is the correct answer because it is a tool used to manage the Global Assembly Cache (GAC) in .NET. The GAC is a central repository for storing shared assemblies, and GacUtil.exe allows for the installation, removal, and listing of assemblies in the GAC. The other options, GacMgr.exe, GacSvr32.exe, and RegSvr.exe, are not specifically designed for managing the GAC and serve different purposes in the software development process.Rate this question:
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- 26.
Can two different .net programming languages be mixed in a single ASPX file ?
- A.
Yes
- B.
No
- C.
May be
- D.
None of the above
Correct Answer
B. NoExplanation
Different .NET programming languages cannot be mixed in a single ASPX file. Each ASPX file is associated with a specific programming language, and the code within that file must be written in that language. Mixing different languages in a single file would result in compilation errors.Rate this question:
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- 27.
Which is true about ASP.net support ?
- A.
ASP.NET doesn't support server-side includes
- B.
ASP.NET doesn't support server-side includes but supports server-side object tags
- C.
ASP.NET doesn't server-side object tags
- D.
ASP.NET support server-side includes and server-side object tags
Correct Answer
D. ASP.NET support server-side includes and server-side object tagsExplanation
ASP.NET supports both server-side includes and server-side object tags. This means that developers can include external files or code snippets into their ASP.NET pages using server-side includes, and they can also use server-side object tags to interact with server-side objects and perform dynamic operations within their ASP.NET applications.Rate this question:
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- 28.
What is the correct declation syntax for the version of an XML document?
- A.
- B.
- C.
- D.
None of the above
Correct Answer
B.Explanation
The question is incomplete and not readable, making it impossible to generate an explanation.Rate this question:
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- 29.
How is an empty XML element defined?
- A.
- B.
- C.
All of the above.
- D.
None of the above.
Correct Answer
C. All of the above.Explanation
An empty XML element is defined as a self-closing tag without any content or attributes. This means that it can be represented in three different ways: with a closing tag, with a self-closing tag, or with an empty tag. Therefore, the correct answer is "All of the above" as all three options accurately represent an empty XML element.Rate this question:
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- 30.
Which statement is true?
- A.
XML tags are case sensitive.
- B.
XML documents must have a root tag.
- C.
XML elements must be properly closed.
- D.
All of the above.
Correct Answer
D. All of the above.Explanation
The given answer "All of the above" is correct because all three statements are true. XML tags are case sensitive, meaning that uppercase and lowercase letters are considered different. XML documents must have a root tag, which serves as the starting point for the structure of the document. XML elements must be properly closed with a closing tag, or in the case of self-closing tags, with a forward slash before the closing angle bracket. Therefore, all three statements are true.Rate this question:
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- 31.
Which of the following statements is true about Dataset ?
- A.
Dataset can store only one table in its cache
- B.
Dataset cannot store any tables in the cache
- C.
Dataset stores tables in the cache,only when cache set to true
- D.
Dataset can store multiple tables in cache
Correct Answer
D. Dataset can store multiple tables in cacheExplanation
The correct answer is that a Dataset can store multiple tables in cache. This means that a Dataset object can hold and manage multiple tables simultaneously, allowing for efficient storage and retrieval of data.Rate this question:
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- 32.
Which object of ado.net has the best performance,for retrieving the data
- A.
DataSet
- B.
DataReader
- C.
Data Provider
- D.
Dataadapter
Correct Answer
B. DataReaderExplanation
The DataReader object in ADO.NET has the best performance for retrieving data. This is because the DataReader provides a forward-only, read-only stream of data from the database, allowing for efficient retrieval of large amounts of data. It is optimized for data retrieval and does not require the overhead of creating and managing a dataset like the DataSet object. The DataReader is commonly used when there is a need to quickly read and process data without the need for complex data manipulation or updates.Rate this question:
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- 33.
No of records in memory at any given point of time when the DataReader reads the Data
- A.
All reacords pulled by the reader
- B.
Only one record at a time
- C.
Depends on the data provider
- D.
Depends on the data source
Correct Answer
B. Only one record at a timeExplanation
The correct answer is "Only one record at a time". This is because a DataReader reads data from a data source sequentially, one record at a time. It does not load all records into memory at once, but rather retrieves and processes them one by one, which makes it efficient for working with large datasets. The number of records in memory at any given point of time is limited to just the current record being processed.Rate this question:
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- 34.
When we need to retrieve only a single value from the Database,which Method is efficient
- A.
ExecuteReader()
- B.
ExecuteScalar()
- C.
ExecuteNonQuery()
- D.
ExecuteXmlReader()
Correct Answer
B. ExecuteScalar()Explanation
When we need to retrieve only a single value from the database, the most efficient method is ExecuteScalar(). This method is specifically designed to retrieve a single value, such as a count or sum, from the database. It returns the value directly, without the need for additional processing or data manipulation. This makes it faster and more efficient compared to other methods like ExecuteReader() or ExecuteNonQuery(), which are more suitable for retrieving multiple rows or performing database operations. ExecuteXmlReader() is not applicable in this scenario as it is used to retrieve XML data from the database.Rate this question:
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- 35.
If we are not returning any records from the database which method is used
- A.
ExecuteReader ()
- B.
ExecuteScalar ()
- C.
ExecuteXmlReader()
- D.
ExecuteNonQuery()
Correct Answer
D. ExecuteNonQuery()Explanation
When we are not returning any records from the database, the method used is ExecuteNonQuery(). This method is typically used for executing SQL statements that do not return any data, such as INSERT, UPDATE, DELETE queries. It is used to perform operations on the database that do not involve retrieving data.Rate this question:
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- 36.
To populate the data set, which methord of DataAdapter is uesd
- A.
GetData()
- B.
FillData()
- C.
FillDataset()
- D.
Fill()
Correct Answer
D. Fill()Explanation
The correct answer is "Fill()". The Fill() method of the DataAdapter class is used to populate the data set. This method retrieves data from the data source and fills the specified DataTable or DataSet with the result.Rate this question:
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- 37.
Object Oriented Programming (OOP) is a style of programming in which your code is broken up into units, known as
- A.
objects
- B.
Classes
- C.
Objects or classes
- D.
Objects and classes
Correct Answer
D. Objects and classesExplanation
In Object Oriented Programming (OOP), code is organized into units called objects and classes. Objects are instances of classes, which are templates or blueprints for creating objects. Objects have properties (attributes) and behaviors (methods) that are defined by their class. This approach allows for encapsulation, inheritance, and polymorphism, making code more modular, reusable, and easier to maintain. By using objects and classes, developers can model real-world entities and their interactions, resulting in more efficient and structured code.Rate this question:
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- 38.
What is OLE ?
- A.
Object Linking and Embedding
- B.
Oriented Linking and Embedding
- C.
Object Location and Embedding
- D.
Objective Location and Embedding
Correct Answer
A. Object Linking and EmbeddingExplanation
OLE stands for Object Linking and Embedding. It is a technology developed by Microsoft that allows objects, such as text, images, or other types of data, to be linked or embedded within documents or applications. This enables users to create dynamic and interactive documents, where changes made to the linked or embedded objects are automatically updated in the document. OLE facilitates the sharing and integration of data between different applications, enhancing productivity and collaboration.Rate this question:
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- 39.
What actually manages your code ?
- A.
JIT
- B.
CTS
- C.
CLR
- D.
CLS
Correct Answer
B. CTSExplanation
The Common Type System (CTS) is responsible for managing code in the .NET framework. It ensures that all data types are compatible and can be seamlessly used together. The CTS defines the rules and guidelines for how types are defined, used, and interacted with in the Common Language Runtime (CLR). It ensures that code written in different languages can be compiled into a common intermediate language (CIL) and executed by the CLR. The CTS also handles tasks such as type safety, memory management, and exception handling.Rate this question:
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- 40.
When the . NET runtime loads and runs code, this is the language that it expects to find the code in.
- A.
Intermediate Language
- B.
Common Type System
- C.
Just-in-Time Compilation
- D.
Globally Unique IDentifiers
Correct Answer
C. Just-in-Time CompilationExplanation
When the .NET runtime loads and runs code, it expects to find the code in the Intermediate Language (IL) format. Just-in-Time Compilation (JIT) is the process by which the IL code is converted into machine code that can be executed by the computer's processor. Therefore, the correct answer is Just-in-Time Compilation.Rate this question:
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- 41.
Which of the following is NOT a valid CSS selector ?
- A.
ID selectors
- B.
TAG selectors
- C.
Title selectors
- D.
HEAD selectors
Correct Answer
D. HEAD selectorsExplanation
The correct answer is HEAD selectors. This is because HEAD is not a valid CSS selector. CSS selectors are used to target specific elements on a webpage, and they can be based on the element's ID, tag name, class, or other attributes. However, HEAD is an HTML element that is used to define the head section of a webpage, not a valid CSS selector.Rate this question:
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- 42.
In CSS, what is a definition of fonts, colors, etc. called ?
- A.
Font-family
- B.
ID tag
- C.
Style
- D.
None
Correct Answer
C. StyleExplanation
The term "style" in CSS refers to the definition of fonts, colors, and other visual properties that are applied to elements on a webpage. It allows web designers to specify the appearance of text, backgrounds, borders, and other visual elements. By using CSS styles, developers can create a consistent and visually appealing design for their websites.Rate this question:
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- 43.
Is what kind of tag ?
- A.
Font tag
- B.
Block tag
- C.
Dividing the page
- D.
Inline tag
Correct Answer
B. Block tagExplanation
The given correct answer is "Block tag". A block tag is a type of HTML tag that is used to define a block-level element on a webpage. Block-level elements typically start on a new line and take up the full width of their parent element. They are used to structure and organize the content of a webpage by creating distinct sections or blocks. Examples of block-level elements include paragraphs, headings, divs, and sections.Rate this question:
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Mar 15, 2023Quiz Edited by
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