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Differentiate between Protection and Security
Operating system contains a collection of objects, hardware or software. Every object has a unique name and can be accessed via a well-defined set of operations. Protection problem - make sure that each object is accessed correctly and just only by those processes that are permitted to do so.
Security must refer external environment of the system, and protect it from:
a) Unauthorized access.
b) Malicious modification or destruction
c) Accidental introduction of inconsistency.
It is very easy to protect against accidental as compared to the malicious misuse.
The meaning of Protection of user files is that file owner or creator should be capable to control:
What can be done and by whom. Several categories of access to files are:
a) Read
b) Write
c) Execute
d) Append
e)Delete
f) List
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scope of traffic police management system?
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