PNG (Portable Network Graphics) is a lossless image format designed specifically for web graphics. It supports transparency and is ideal for screenshots, logos, and graphics with sharp edges.

ColdFusion Markup Language files use the extensions .cfm (ColdFusion Markup) and .cfml (ColdFusion Markup Language) for server-side web applications. These contain code that executes on ColdFusion servers.

ASHX is the file extension for ASP.NET Generic Handlers, which process HTTP requests without the overhead of a full web page. They're used for AJAX calls, file downloads, and lightweight HTTP endpoints.

The .fnt extension was used for Windows font files in older systems, though modern Windows primarily uses .ttf (TrueType), .otf (OpenType), and .fon (font resource) formats. .fnt was common in early Windows versions.

HTML files use the .html extension (and the shorter .htm variant). These contain markup code that web browsers render as web pages. HTML is the standard language for creating web pages.

CGI (Common Gateway Interface) is a protocol that web servers use to execute external programs and generate dynamic web content. It's a standard interface between web servers and server-side applications.

ASCX is the file extension for ASP.NET User Controls (custom controls). These are reusable components that can be embedded in ASP.NET web forms (.aspx pages) to modularize UI elements.

TTF (TrueType Font) is a widely-used font file format developed by Apple and Microsoft. Other common font extensions include .otf (OpenType), .woff (Web Open Font Format), and .fon (font resource files).

Delegates in .NET are type-safe object references that encapsulate a method. This concept is conceptually identical to function pointers in C or C++.

The C# keyword int is an alias for System.Int32, a 32-bit signed integer. Int16 is short, Int64 is long, and there is no Int8 type in .NET.

The C# keyword int is an alias for System.Int32, a 32-bit signed integer. Int16 is short, Int64 is long, and there is no Int8 type in .NET. This is a duplicate of question 129373.

The comma syntax int[,] declares a rectangular two-dimensional array in C#. int[][] is a jagged array (array of arrays), int[2] is invalid syntax, and System.Array[2] is not valid array declaration syntax.

Thread.Sleep in C# accepts time in milliseconds. To sleep for seconds, you must multiply by 1000. This is consistent across .NET Framework and .NET/Core.

protected internal combines both access modifiers: accessible within the current assembly (internal) AND to derived classes in other assemblies (protected). private is class-only, protected excludes current assembly, and option D is incorrect.

HTML elements without content are called Empty elements. They don't have closing tags and can't contain child elements. Examples include
, , ,

The

In HTML, the href (hypertext reference) attribute specifies the URL or address that the link points to. Without href, an anchor tag wouldn't have a destination. Target only controls the opening behavior, not the address itself.

The td tag in HTML tables stands for 'table data' and represents a standard cell containing data. This contrasts with th (table header) cells which contain header information.

HTML provides six levels of headings using

through

tags, where h1 represents the main heading and h6 the lowest-level subheading. These are semantic tags that convey document structure.

In IIS, Content Deployment is the standard service and mechanism used to replicate and deploy web content across different environments or servers, whereas the other options are not standard IIS service names.