Software 04- Security

What do operating systems protect?
Operating systems protect proceeses from each other as well as protecting users from each other too.
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How does the operating system prevent processes overwriting data?
The operating system divides memory into pages and keeps tabs on which processes are using which pages to prevent conflicts
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What do multi-user operating systems do?
Multi-user operating systems keep track of who owns each process and each file. These are markjed according to what privileges have been granted.
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What is an example of users getting privilages over others?
A file may be marked as read-write for one particular user but read only for others
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What does firewall software do?
Firewall software takes care of many permission related security issues.
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Other cards in this set

Card 2

Front

How does the operating system prevent processes overwriting data?

Back

The operating system divides memory into pages and keeps tabs on which processes are using which pages to prevent conflicts

Card 3

Front

What do multi-user operating systems do?

Back

Preview of the front of card 3

Card 4

Front

What is an example of users getting privilages over others?

Back

Preview of the front of card 4

Card 5

Front

What does firewall software do?

Back

Preview of the front of card 5

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