18 Questions
What is one of the primary roles of the operating system?
To manage the physical resources on behalf of executing processes
What is the purpose of an address space provided by the operating system?
To decouple the physical memory from the virtual memory
What is a possible scenario when the virtual memory is larger than the physical memory?
Some virtual memory locations are not present in physical memory
What is a mechanism required by the operating system to manage physical memory?
Physical memory allocation and tracking mechanisms
What is the purpose of the operating system replacing contents in physical memory with contents from disk?
To swap out unused virtual memory locations
What is required for the operating system to arbitrate memory access?
Quick interpretation and verification of a process memory access
What is the primary goal of modern operating systems in terms of memory management?
To quickly translate virtual addresses into physical addresses and validate them
What is the fixed-size unit of memory allocation in page-based memory management?
Page
What mechanism is used in segmentation to arbitrate accesses to memory?
Segment registers
What is the main difference between paging and segmentation?
Paging uses fixed-size pages, while segmentation uses variable-size segments
What is the purpose of page tables in page-based memory management?
To arbitrate accesses to physical memory
Which memory management mechanism is most commonly used in modern operating systems?
Paging
What is the main function of a Memory Management Unit (MMU)?
To convert virtual addresses to physical addresses
What type of fault can occur when a program attempts to access memory that hasn't been allocated?
Illegal access fault
What is the purpose of the Translation Lookaside Buffer (TLB)?
To cache the virtual/physical address translations
What is responsible for generating a fault when an issue occurs during memory access?
The Memory Management Unit (MMU)
What type of registers are used in a segmentation system to help with memory translation?
Registers that point to the base address, the size of the segment and the total numbers of segments
What performs the actual translation from virtual address to physical address?
The Hardware
Test your knowledge on how operating systems manage physical resources, specifically DRAM, on behalf of executing processes. Learn about address spaces, virtual and physical memory, and how the operating system translates addresses. Assess your understanding of this crucial concept in computer science.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
