Memory Protection MCQ

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

• What is the need of protection?
  ক

  Prevent mischievous violation

  খ

  Prevent and intentional

  গ

  Ensure that each program component uses resources allotted to it only

  ঘ

  All of the mentioned
• What is the principle of least privilege?
  ক

  Less privileges provide difficulty in executing admin tasks

  খ

  Users can get temporary high privilege access

  গ

  Users should be given just enough privileges to perform their tasks

  ঘ

  None of the mentioned
• What is the main objective of protection?
  ক

  Ensure all objects are protected individually

  খ

  Objects have different priority and thus different levels of protection

  গ

  Ensure that each object is accessed correctly and only by allowed processes

  ঘ

  None of the mentioned
• What is the correct way the segmentation program address is stored?
  ক

  name, offset

  খ

  start, stop

  গ

  access, rights

  ঘ

  offset, rights
• What is a major feature of segmentation?
  ক

  Program is divided in data memory and program memory

  খ

  Program is executed in segments

  গ

  Program is divided into pieces having different access rights

  ঘ

  It has effect of an unbounded architecture
• What is best solution to have effect of unbounded number if base/bound registers?
  ক

  Tagged architecture

  খ

  Segmentation

  গ

  Fence method

  ঘ

  None of the mentioned
• What is true regarding tagged architecture?
  ক

  Every word of machine memory has one or more extra bits

  খ

  Extra bits are used to do padding

  গ

  Extra bits are not used to identify rights to that word

  ঘ

  It is very compatible to code upgrades
• How is disadvantage of all-or-nothing approach overcome?
  ক

  Base/Bound

  খ

  Relocation technique

  গ

  Fence method

  ঘ

  Tagged architecture
• What is all-or-nothing situation for sharing in memory?
  ক

  Program makes all its data available to be accessed

  খ

  It prohibits access to some

  গ

  It creates rules who can access program memory

  ঘ

  It separates program memory and data memory
• What is the role of base/bound registers?
  ক

  They give starting address to a program

  খ

  Program’s addresses are neatly confined to space between the base and the bound registers

  গ

  They provide encrypted environment

  ঘ

  This technique doesn’t protects a program’s address from modification by another user
• What is the basic need in protecting memory in multi-user environment?
  ক

  We need two registers one ‘start’ and other ‘end’

  খ

  We need a variable register

  গ

  A fence register has to be used known as base register.

  ঘ

  None of the mentioned
• How can fence and relocation be used together?
  ক

  To each program address, the contents of fence register are added

  খ

  To contents of fence register is subtracted from actual address of program

  গ

  To each program address, the contents of fence register are not added

  ঘ

  None of the mentioned
• What is correct regarding ‘relocation’ w.r.t protecting memory?
  ক

  It is a process of taking a program as if it began at address 0

  খ

  It is a process of taking a program as if it began at address 0A

  গ

  Fence cannot be used within relocation process

  ঘ

  All of the mentioned
• What is not true regarding ‘Fence’?
  ক

  It is implemented via hardware register

  খ

  It doesn’t protect users from each other

  গ

  It good to protect OS from abusive users

  ঘ

  Its implementation is unrestricted and can take any amount of space in Operating system.
• What is true regarding ‘Fence’?
  ক

  Its a method to confine users to one side of a boundary

  খ

  It can protect Operating system from one user

  গ

  It cannot protect users from each other

  ঘ

  All of the mentioned