RE: [CISSP-D] Confused: fail-safe and fail-secure lock

Hi:
 
When a computer or network component fails and the computer or the network 
continues to function, it is called a fault-tolerant system.
 
For fault-tolerance to operate, the system must be capable of detecting that a 
fault has occurred, and the system must then have the ability to correct the 
fault or operate around it.
 
In a fail safe system, program execution is terminated, and the system is 
protected from being compromised when a hardware or software failures occurs 
and is detected.
 
In a system that is fail soft or resilient, selected, non-critical processing 
is terminated when a hardware or software failure occurs and is detected.
 
The computer or network then continues to function in a degraded mode.
 
When they said this test is 2 inches thick and a mile wide they weren't kidding.
 
Hope this helps. 
 
Ref: Page 196
The CISSP Prep Guide - Mastering the Ten Domains of Computer Security
(Ronald L. Krutz / Russell Dean Vines)
 
 
Good Luck,
 
Dominick Sardina Jr.
ISNYC Forums
http://www.infosecnyc.com
 
 





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