COMPUTER SCIENCE ILLUMINATED
COMPUTER SCIENCE ILLUMINATED
7th Edition
ISBN: 9781284208047
Author: Dale
Publisher: JONES+BART
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Chapter 11, Problem 40E

a.

Program Plan Intro

File protection mechanism in UNIX environment:

  • In UNIX environment, the file protection is represented in the table format and consists of three rows and three columns as follows:
OperationOwnerGroupWorld
ReadYesYesYes
Write/DeleteYesYesNo

Explanation:

From the above table,

  • Each cell in the table represents the Boolean values.
  • The Boolean value determines whether the file is to be read, write, or execute.
    • The Boolean value “Yes” specifies that the permission is granted to access the file.
    • The Boolean value “No” specifies that the permission is not granted to access the file.

Explanation of Solution

b.

Access to write/delete the file:

From the above table,

  • It is known that the owner and list of users in a group are only allowed to write or delete the data from the file.
    • The Boolean value “Yes” is present only on the “Owner”, and “Groupp&#...

Explanation of Solution

c.

Access to execute the file:

From the above table,

  • It is known that only the “Owner” is allowed to execute the data from the file.
    • The Boolean value “Yes” is present only on the “Owner” and ind...

Explanation of Solution

d.

Content of the file:

From the above table,

  • It is known that only the “Owner” is allowed to execute the data from the file.
  • So, the file must be an executable file.
    • The Boolean value “Yes” is present only on the “Owner” to perform execution operation in the file...

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W AutoSave Off File Home Insert Draw Design Assignment_1[1] - Protected... ■ Saved V > Search Layout References Mailings Review View Help QuillBot RefWorks - RCM PROTECTED VIEW Be careful-files from the Internet can contain viruses. Unless you need to edit, it's safer to stay in Protected View. Enable Editing PR Comments Viewing Share × 2. The following state transition table is a simplified model of process management, with the labels representing transitions between states of READY, RUN, BLOCKED, and NONRESIDENT. READY RUN BLOCKED NONRESIDENT READY RUN - 1 - 5 BLOCKED 2 4 3 - 6 Give an example of an event that can cause each of the above transitions. Draw a diagram if that helps. (5) Page 2 of 4 20 of 278 words Text Predictions: On 64 f W Focus + 170% ENG US 17:13 2025/03/24
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