Page 90 - TP_IT_V1.0_C9_flipbpookl
P. 90

•  It allows a device to easily interact in short distance or long distance communication.
              •  Some of the commonly used mobile OS are Android, iOS, etc.













                                                Android                        iOS



                      BOOTING

              Booting is a process of starting the operating system and loading it in the computer's memory when the power is
              switched on. It is of two types:
              •  Cold Booting: After the computer is shut down completely followed by power off and then we switch it on to start
                it, then, it is called cold booting.
              •  Warm Booting: It is when we press the restart button without switching off the power supply and the computer is
                reloaded with all its operating system files.


                      PROCEDURE FOR STARTING A COMPUTER

              When the power button is switched on, Windows 11 follows the given Start up Process:

              •  As soon as the power is on, ROM loads the BIOS instructions into the computer's memory.
              •  It does Power On Self Test to check that all the hardware devices are functioning properly with constant supply of
                the electricity. In case there is any error, a beep sound is produced, an error message is displayed on the screen and
                the system stops loading windows.

              Login and Logout

              The term "login" refers to the process of accessing and entering a user account to access the user's personalised
              desktop environment. It involves the steps necessary for providing the credentials details like username and password
              etc. so that an authenticated person will gain access to the operating system. A login ID and password is like a key to
              the lock which allows you to use the computer.
              The login process is the initial step after starting or restarting a computer. The steps involved in login:

              Step 1:   Windows will display a sign-in screen where you can see a list of user accounts or enter your username/email
                      and password.
              Step 2:  Windows will verify your credentials against the information stored for the selected user account.

              Step 3:   Upon  successful  authentication,  Windows  will  load  your  personalised  desktop  and  launch  background
                      processes.
              Step 4:  You are now logged in, and your user session begins.

              Logging out is an essential step for security and privacy, as it ensures that unauthorised users cannot access your
              account or data after you have finished your session. When you log out, you terminate your current user session, and
              access to the system or application is restricted until you log in again.





                88    Trackpad Information Technology (Ver. 1.0)-IX
   85   86   87   88   89   90   91   92   93   94   95