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Questions and Answers
What is the primary function of Microsoft Visual Studio?
What is the primary function of Microsoft Visual Studio?
What does the Solution Explorer window in Visual Studio do?
What does the Solution Explorer window in Visual Studio do?
Which of the following programming languages is NOT supported by the .NET Framework?
Which of the following programming languages is NOT supported by the .NET Framework?
What type of files are assemblies in Visual Studio typically stored as?
What type of files are assemblies in Visual Studio typically stored as?
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What does the .NET Framework Class Library provide to developers?
What does the .NET Framework Class Library provide to developers?
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Which data type can hold numbers that range from -32,768 to 32,767?
Which data type can hold numbers that range from -32,768 to 32,767?
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What method is used to add elements to an ArrayList?
What method is used to add elements to an ArrayList?
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Which data type is used for holding hexadecimal numbers?
Which data type is used for holding hexadecimal numbers?
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What is the primary purpose of the RemoveAt() method in an ArrayList?
What is the primary purpose of the RemoveAt() method in an ArrayList?
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What range of numbers can the bigint data type hold?
What range of numbers can the bigint data type hold?
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Which of the following best describes the Toolbox Window in Visual Studio?
Which of the following best describes the Toolbox Window in Visual Studio?
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What does the method Console.WriteLine do in C#?
What does the method Console.WriteLine do in C#?
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Which of the following data types in C# stores its data value directly in its own memory space?
Which of the following data types in C# stores its data value directly in its own memory space?
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What are reference types in C# primarily used for?
What are reference types in C# primarily used for?
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In the .NET Framework, what is the role of the 'object' type?
In the .NET Framework, what is the role of the 'object' type?
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Which component of the .NET Platform is NOT a part of its core technologies?
Which component of the .NET Platform is NOT a part of its core technologies?
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What is the purpose of the Properties Window in Visual Studio?
What is the purpose of the Properties Window in Visual Studio?
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Which of the following correctly defines a pointer type in C#?
Which of the following correctly defines a pointer type in C#?
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What does the Contains() method return when checking for an element in an ArrayList?
What does the Contains() method return when checking for an element in an ArrayList?
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Which method would you use to insert an element at a specific position in an ArrayList?
Which method would you use to insert an element at a specific position in an ArrayList?
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What is the function of the SQL UNION expression?
What is the function of the SQL UNION expression?
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What is the maximum range of values for the money data type?
What is the maximum range of values for the money data type?
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Which SQL function is used to calculate the average value from a numeric column?
Which SQL function is used to calculate the average value from a numeric column?
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Which of the following accurately describes the varchar data type?
Which of the following accurately describes the varchar data type?
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For which data does the text type field typically apply?
For which data does the text type field typically apply?
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When using the GROUP BY clause in SQL, what must be true regarding the columns in the select list?
When using the GROUP BY clause in SQL, what must be true regarding the columns in the select list?
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What is the purpose of the HAVING clause in SQL?
What is the purpose of the HAVING clause in SQL?
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What does the IndexOf() method return when an object is found?
What does the IndexOf() method return when an object is found?
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What does the Sort() method do in an ArrayList?
What does the Sort() method do in an ArrayList?
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What does the MIN() function return in SQL?
What does the MIN() function return in SQL?
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What does the SQL command SELECT MAX(col_name) FROM table_name do?
What does the SQL command SELECT MAX(col_name) FROM table_name do?
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What type of values can be stored in a smallmoney data type?
What type of values can be stored in a smallmoney data type?
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How does the SUM() function operate in SQL?
How does the SUM() function operate in SQL?
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What happens to duplicate records when using the SQL UNION operator?
What happens to duplicate records when using the SQL UNION operator?
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Study Notes
Microsoft Visual Studio
- Integrated development environment (IDE) from Microsoft used for developing computer programs, websites, web apps, web services, and mobile apps.
- Compiled code is saved in assemblies with .dll or .exe file extensions.
- Supports multiple programming languages, including C#, F#, and Visual Basic.
.Net Framework Class Library
- Provides features of the .NET runtime and a library of classes for web, windows-based, and XML web service applications.
C# Language
- Widely used object-oriented programming language that operates on the .NET Framework for web, mobile, games, and desktop applications.
- Console.WriteLine method displays messages in the console window.
Data Types in .Net
-
Value Types: Store data values directly in their own memory space (e.g.,
int i = 5;
). -
Reference Types: Store addresses of their values instead of actual data (e.g.,
string name = "Leanne Dagsil";
). -
Pointer Types: Store the address of another pointer (e.g.,
int * p;
).
Variables in C#
- Storage containers for data values including predefined data types such as:
- sByte: 8-bit signed integer
- int: Represents integers
- tinyint: Stores positive numbers from 0 to 255
- smallint: Values range from -32,768 to 32,767
- bigint: Values range from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
- decimal: Represents numbers with a decimal point
- float: Fractional numbers, approximates the value.
ArrayList Methods
- Count: Returns total elements.
- Add(): Adds elements.
- InsertRange(): Inserts a collection at specified index.
- Remove(): Removes specified elements.
- RemoveAt(): Removes element at index.
- Contains(): Checks existence of an element, returns boolean.
SQL Basics
- Databases store structured information for easy retrieval and management.
-
Aggregate Functions: Aggregate data in queries:
- MAX(): Returns maximum value in a numeric column.
- MIN(): Returns minimum value in a numeric column.
- AVG(): Calculates average value in a numeric column.
- SUM(): Calculates total from a numeric column.
- GROUP BY: Groups rows sharing a property to perform aggregate calculations.
- HAVING Clause: Filters grouped data based on search conditions.
Additional SQL Commands
- UNION: Combines results from multiple SELECT statements while removing duplicates.
- SELECT: Retrieves data based on specified criteria within tables.
Visual Studio Features
- Solution Explorer: Helps manage solutions, projects, files, and references.
- Toolbox Window: Displays controls to be added to projects.
- Properties Window: Allows viewing and altering properties and events of selected objects.
.Net Platform
- Offers core technologies and services enhancing web-based application development, including developer tools, UX, devices, and XML web services.
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Description
This quiz covers the fundamentals of Visual Studio, an integrated development environment (IDE) by Microsoft. It explores the APIs and types provided for common functionalities and delves into the programming languages compatible with .NET Framework, focusing on languages such as C#. Test your knowledge on these essential concepts.