An operating system organizes files in directories as shown in the chart below.Study it and answer the questions that follow.

31/12/2020

An operating system organizes files in directories as shown in the chart below.Study it and answer the questions that follow.

(a) (i) What is the name of this file structure?
(ii) One of the files in MISCELLANEOUS has a file name similar to one in CHEMISTRY in Form 1. Describe what happens if all the contents of CHEMISTRY are copied to MISCELLANEOUS.
(iii) What will happen if an attempt is made to delete FORM2 while File_10 in MATHEMATICS is open?
(iv) State four advantages of this structure.
(b) State four properties that an operating system displays about a file.
(c)A removable storage media unit connected to a single user microcomputer system is used for permanent storage of programs and data. State six file functions you would expect the operating system of the computer to provide to enable the user to maintain this storage media.
(d) State two tasks performed by the operating system in each of the following resources:
(i) memory;
(ii) input/output devices.

RESPONSES

(a) (i) Hierarchical Structure/Tree structure.
(ii) File 02 and 03 with be replicated in miscellaneous.

File 01 in chemistry will replace or remove file 01 in miscellaneous. Some systems may abort.

(iii) The process will be denied because the OS has file copied into the main memory.
(iv)

Easy to secure files by adding attributes.
Easy to access file/Loading of files.
Allows for grouping of similar of files.
Allows file of the same name to be stored in different folder.
Easy to add directories.

(b)File size.

Date modified.
File type.
File name.
Author.
Date created.
Time.

(c)Opening of files/Reading.

Closing of files.
Writing of files/saving/storing/print to file.
A copy commands.
Backup facility.
Delete commend/formatting.
Command to log to different part of the media.
Changing attributes.
Renaming.

(d) (i) Swapping of programs in and out of the memory.

Keep track of what part of the memory is in use.
Keep track of which process is in control of what part of memory.
Enforce a policy on how the programs can access it.
Creating of virtual memory.

(ii)It has control over their request and only grants one request access to avoid deadlocks.

Monitor and study the status of 10 and report any fault detected
Reports of error.
Controls movement of data/information in and out of the 1/O.
Allows addition of 1/O devices.

COMPUTER STUDIES QUESTIONS WITH ANSWERS