OS Protection

When a process capability is revoked then it won’t be able to reacquire it

Pointers are maintained for each object which can be used to revoke

Indirect pointing is done to revoke object’s capabilities

Master key can be used compare and revoke.

a list of objects

a list of domains

a function which returns an object’s type

all of the mentioned

denial-of-service attack

slow read attack

spoofed attack

starvation attack

logic bomb

trap door

code stacker

none of the mentioned

internal thief

trojan horse

code stacker

none of the mentioned

They give starting address to a program

Program’s addresses are neatly confined to space between the base and the bound registers

They provide encrypted environment

This technique doesn’t protects a program’s address from modification by another user

List of pointers is maintained with each object

When revocation is required these pointers are followed

This scheme is not adopted in MULTICS system

These point to all capabilities associated with that object

stealth

virus signature

armoured

multipartite

source file

object file

executable file

all of the mentioned

denial of service

port scanning

memory access violation

dumpster diving