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    • ( 1 ) A semaphore is a shared integer variable

    • 1) that can not drop below zero
    • 2) that can not be more than zero
    • 3) that can not drop below one
    • 4) that can not be more than one
    • Discussion in forum
      Answer : 1) that can not drop below zero
      Solution : A semaphore is a shared integer variable that can not drop below zero.








      discussion


      Answer : 1) that can not drop below zero

    • ( 2 ) Which one of the following is not a linux distribution?

    • 1) debian
    • 2) gentoo
    • 3) open SUSE
    • 4) multics
    • Discussion in forum
      Answer : 4) multics
      Solution : Debian is an operating system composed only of free, open-source software.
      Gentoo Linux was initially created by Daniel Robbins as the Enoch Linux distribution.
      openSUSE is a community-created Linux distribution sponsored by Novell.
      Multics is not linux distribution.








      discussion


      Answer : 4) multics

    • ( 3 ) Linux is

    • 1) single user, single tasking
    • 2) single user, multitasking
    • 3) multiuser, single tasking
    • 4) multiuser, multitasking
    • Discussion in forum
      Answer : 4) multiuser, multitasking
      Solution : Linux is multiuser, multitasking.








      discussion


      Answer : 4) multiuser, multitasking

    • ( 4 ) Which desktop environment is not used in any linux distribution?

    • 1) gnome
    • 2) KDE
    • 3) unity
    • 4) none of the mentioned
    • Discussion in forum
      Answer : 4) none of the mentioned
      Solution : gnome, KDE and unity is used in any linux distribution.








      discussion


      Answer : 4) none of the mentioned

    • ( 5 ) In UNIX, the _____ system call is used to send a signal.

    • 1) sig
    • 2) send
    • 3) kill
    • 4) sigsend
    • Discussion in forum
      Answer : 3) kill
      Solution : In UNIX, the kill system call is used to send a signal.








      discussion


      Answer : 3) kill

    • ( 6 ) Which of the following is not TRUE :

    • 1) Processes may send each other signals
    • 2) Kernel may send signals internally
    • 3) a field is updated in the signal table when the signal is sent
    • 4) each signal is maintained by a single bit
    • Discussion in forum
      Answer : 3) a field is updated in the signal table when the signal is sent
      Solution : A field is updated in the process table when the signal is sent.








      discussion


      Answer : 3) a field is updated in the signal table when the signal is sent

    • ( 7 ) Transient operating system code is code that :

    • 1) is not easily accessible
    • 2) comes and goes as needed
    • 3) stays in the memory always
    • 4) never enters the memory space
    • Discussion in forum
      Answer : 2) comes and goes as needed
      Solution : Transient operating system code is code that comes and goes as needed.








      discussion


      Answer : 2) comes and goes as needed

    • ( 8 ) What is not a major reason for building distributed systems ?

    • 1) Resource sharing
    • 2) Computation speedup
    • 3) Reliability
    • 4) Simplicity
    • Discussion in forum
      Answer : 4) Simplicity
      Solution : Simplicity is not a major reason for building distributed systems.








      discussion


      Answer : 4) Simplicity

    • ( 9 ) Multimedia systems require _________ scheduling to ensure critical tasks will be serviced within timing deadlines.

    • 1) soft real time
    • 2) hard real time
    • 3) normal
    • 4) None of these
    • Discussion in forum
      Answer : 2) hard real time
      Solution : Multimedia systems require hard real time scheduling to ensure critical tasks will be serviced within timing deadlines.








      discussion


      Answer : 2) hard real time

    • ( 10 ) The ______register is read by the host to get input.

    • 1) flow in
    • 2) flow out
    • 3) data in
    • 4) data out
    • Discussion in forum
      Answer : 3) data in
      Solution : The data in register is read by the host to get input.








      discussion


      Answer : 3) data in





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