Commonly used icons are:
My Computer, Documents, Recycle Bin, application icons, shortcut icons, document icons and disk-drive icon.

Aeropeek is used to get the desktop at any time.

The Taskbar is at the bottom of the Desktop and contains the Start button. Windows Notification Area time and date.

Referred to as log, log off, log out, disconnecting, and sign out, sign off is the process of disconnecting from a network or what occurs when your connection is lost.

Shut down is a term used to describe the process of closing all software programs in preparation to turn off a computer's power.

(i) Amazon
(ii) Trash
(iii) Files
(iv) System Settings

All the Operating system based on the concept of GUI (Graphical User Interface).

Red Hat and SUSE Enterprise.

The server distribution in Linux OS:
(i) Ubuntu Linux
(ii) Linux Mint
(iii) Arch Linux
(iv) Deepin
(v) Fedora
(vi) Debian
(vii) Centos

Advantages:
(i) It is free of cost
(ii) Accessible to everybody.
(iii) Not belongs to particular vendor.
(iv) It can be modified, for requirements.

Open source refers to a program or software in which the source code is available in the web to all public, without any cost.

The basic difference between the two is that files store data, while folders store files and other folders.

File Extension is the second part of the file name. It succeeds the decimal point in the file name. It is used to identify the type of file and it is normally upto 3 to 4 characters long.
Ex. 1. exe,2. html.

It is a folder which contains all deleted files and folders have an opportunity to recover from it.