The process of booting the system involves performing the self test POST.
POST involves testing the computer hardware which are required for proper functioning of the computer.
If the POST test fails, the computer performs the necessary action required for the proper functioning of the computer.It immediately raises alarm ( beeps ) . Different number of beeps represents different devices which are having trouble.
So, option (D) is correct option.
Option (A) IDE is not the test. So, option (A) is wrong option.
Option (B) POTS is not the test.So, option (B) is wrong option.
Option (C) QoS is not the test. So, option (C) is wrong option.
One of the founders of Foursquare is Dennis Crowley. The other is Naveen Selvadurai. I know you didn't ask for both but I wanted to give them to you just in case. I hope this helps! (:
