IT 342 George Mason University Operating Systems Fundamentals? Questions

User Generated

elnaonvyrl0907

Computer Science

IT 342

George Mason University

IT

Description

Operating systems fundamentals

1.Describe how a page fault is handled?

2.What are file attributes?

3.What operations can be performed on files and directories? Why are some distinct?

4.Compare and contrast sequential to direct access.

5.How is a tree-structured directory different from a acyclic-graph directory?

6.What is the purpose of Swap?

7.What is the difference between RAID 1 and RAID 5?

8.What are the purposes of buffering?

9.Describe a typical Disk Drive and some issues that must be considered for its use?

10.What can effect the total time to fetch some data from a disk (access time)?

11.You are implementing a RAID storage system and have found a system with eight 100 GB drives. How much storage space will you have available for RAID0, RAID1, RAID5?

User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.

Explanation & Answer

Hey BuddyThe assignment is done. Find it attached to this message. Success!!RegardsTutor_Khloe

Operating systems fundamentals
1. Describe how a page fault is handled?
Page faults occur when a given program attempts to access some code or data which
is in its address space but not yet available in the operating system RAM. Once the operating
system finds the occurrence of a page fault, it tries to find by itself the required virtual page
which can be found in registers or by retrieving the fetch instruction of the PC aiming to find
out the last operation before the page fault. Once the address is found, it is checked for
validity and availability of problems like protection access. For a valid address. The system
checks for page free to establish if it free and if there is no free frame, the system runs the
page replacement algorithm aimed at removing a page. In case of dirty selected fame, the
fault process is suspended giving room for other processes to run awaiting for the completion
the transfer of the page to the disk. Once a clean frame is available, the OS schedules the
transfer of the page back from its disk address and once the page arrives at the destination,
the frame is marked to show that it is normal. The faulting instruction is then backed up to its
original state and the PC reset; the system then schedules faulting and returns to the routine
that called it. The assembly routine then reloads the given register together with the other
information on the current state and execution is continued (Shinde et al. 2016).
2. What are file attributes?
File attributes refer to the various settings which are associated with files in the
computer which either deny or grant the user or operating systems rights on how to access the
particular file. An example of file attributes are Read, Execute and Write in the Li...


Anonymous
Very useful material for studying!

Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4

Similar Content

Related Tags