chap 3

Question 1

what is security policy?

Answer 1

”A security policy is a statement that partitions the states of the system into a set of authorized, or secure, states and a set of unauthorized, or nonsecure, states”

Question 2

what is.a secure system?

Answer 2

starts in authirzed state and never enter unauthorized states

Question 3

what is breach of security?

Answer 3

when system enter unathorized state

Question 4

what is security mechanism?

Answer 4

an entyty or procedure that enforce some part of the security policy ex policy students can not copy each other, mechnism file acess control to prevent acess to files

Question 5

types of security polices

Answer 5

confidentialty, integrity and avaiability

Question 6

types of security policies

Answer 6

military, commercial. confidential, integrirty

military have information about military missions.
commercial customer informaion such as account info, account balance etc.

confidental only protect confidentialy and integrity only protecting integirty