Icons
Files. There are different kinds of files depending on their contents, each is created and edited with different programs.
A folder
What types of files and programs have you downloaded?*
No. dll files are "Dynamic Link Libraries" and are used to store program code. They don't operate as stand alone programs but they are called by other programs.
This is usually called the directory or directory listing.
Mostly, they are in a folder called Program Files in C:\\ drive.
Icons are used to access files and programs on the computer.
In the Windows OS it is Windows Explorer.
windows
Although many files these days do come in zipped files it is extremely easy to unzip the files. One of the oldest and best known programs for doing this is a program called WinZip.
Audio media refers to the different formats that sound is available in. This can include CDs, cassettes, and digital sound files. Audio description is the auditory narration of visual representations such as television programs, films and live performances.
There is no standardized viewer for viewing PDF files from the console. PDF files were intended to be worked with on graphical workstations. There are a couple that can use SVGAlib (thus they only work on Linux), and there may be similar programs on some proprietary implementations, but nothing in widespread usage.