Privilege MCQ

Test your knowledge with important Privilege MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Privilege MCQs at Bissoy

• An exception is generated when
  ক

  privilege test is negative

  খ

  an improper segment is referenced

  গ

  referenced segment is not present in physical memory

  ঘ

  all of the mentioned
• The data segment access refers to
  ক

  loading DS

  খ

  loading ES

  গ

  loading SS

  ঘ

  all of the mentioned
• When a JUMP instruction references a Task State Segment(TSS) descriptor, then DPL must be
  ক

  equally privileged as CPL

  খ

  greater or equally privileged than CPL

  গ

  less or equally privileged than CPL

  ঘ

  less privileged than CPL
• The instruction that refers to only code segment descriptors with DPL equal to or less than the task CPL is
  ক

  CALL

  খ

  IRET

  গ

  ESC

  ঘ

  RET and IRET
• The RPL of a selector that referred to the code descriptor must have
  ক

  less privilege than CPL

  খ

  greater privilege than CPL

  গ

  equal privilege than CPL

  ঘ

  any privilege regarding CPL
• A CALL instruction can reference only a code segment descriptor with
  ক

  DPL less privilege than CPL

  খ

  DPL equal privilege to CPL

  গ

  DPL greater privilege than CPL

  ঘ

  All of the mentioned
• The task requesting an access to a descriptor is allowed to access after checking the
  ক

  type of descriptor

  খ

  privilege level

  গ

  type of descriptor and privilege level

  ঘ

  corresponding segment
• The effective privilege level is
  ক

  maximum numeric of RPL and CPL

  খ

  minimum privilege of RPL and CPL

  গ

  numeric minimum and privilege maximum of RPL and CPL

  ঘ

  none of the mentioned
• The selector RPL that uses a less trusted privilege than the current privilege level for further use is known as
  ক

  Least task privilege level

  খ

  Descriptor privilege level

  গ

  Effective privilege level

  ঘ

  None of the mentioned
• A task with privilege level 0, doesn’t refer to all the lower level privilege descriptors in
  ক

  GDT (global descriptor table)

  খ

  LDT (local descriptor table)

  গ

  IDT (interrupt descriptor table)

  ঘ

  None of the mentioned
• The data segments defined in GDT (global descriptor table) and the LDT (local descriptor table) can be accessed by a task with
  ক

  privilege level 0

  খ

  privilege level 1

  গ

  privilege level 2

  ঘ

  privilege level 3
• Once the CPL is selected, it can be changed by
  ক

  hold

  খ

  transferring control using system descriptors

  গ

  transferring control using gate descriptors

  ঘ

  transferring control using interrupt descriptors
• The task privilege level at the instant of execution is called
  ক

  Descriptor privilege level (DPL)

  খ

  Current privilege level (CPL)

  গ

  Effective privilege level (EPL)

  ঘ

  None of the mentioned
• By using privilege mechanism the protection from unauthorized accesses is done to
  ক

  operating system

  খ

  interrupt handlers

  গ

  system software

  ঘ

  all of the mentioned