goals of protection ensure that each object is accessed correctly and only by
those processes that are allowed to do so.
guiding principle of protection - Programs, users and systems should be given just
enough privileges to perform their tasks
- principle of least privilege
access rights ...
WGU C191 MODULE 5 Questions & Answers | Latest Update 2024 goals of protection ✔✔ ensure that each object is accessed correctly and only by those processes that are allowed to do so. guiding principle of protection ✔✔ - Programs, users and systems should be given just enough privileges to perform their tasks - principle of least privilege access rights ✔✔ where rights -set is a subset of all valid operations that can be performed on the object domain ✔✔ set of access -rights system has two domains ✔✔ user and su pervisor UNIX domain system ✔✔ - domain: user -id domain switch accomplished via file system -When file is executed and setuid = on, then user -id is set to owner of the file being executed. When execution completes user -id is reset access matrix ✔✔ - view protection as matrix - rows: domains columns: objects use of access matrix ✔✔ - Can be expanded to dynamic protection. - Operations to add, delete access rights. - Special access rights - separate mechanism from policy
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