Joe, the system administrator, has been asked to calculate the Annual Loss Expectancy
(ALE) for a $5,000 server, which often crashes. In the past year, the server has crashed 10
times, requiring a system reboot to recover with only 10% loss of data or function. Which of
the following is the ALE of this server?
A.
$500
B.
$5,000
C.
$25,000
D.
$50,000
if the server crashes 10 times a year and ALE the cost of the server is 5000, the answer is 50,000
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It would be $5,000 , the question states only 10% loss of data or function, so take 10% of 50k, that would be the ALE = 5K
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In the question it states that the machine ALE is $5,000. then asks what the ALE is, so there shouldn’t be any math; it’s 5,000.
Where do you get the 50,000 from?
Formula is: ALE = SLE X ARO
5,000(ALE) = N(never tells you) X 10(ARO)
Asks for the ALE, it’s 5,000
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This one stumped me also. I was thinking as Brian did. But the actual cost is 5K
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I hope this clarifies things for everyone. You must find the SLE before you can calculate the ALE. All the factors are in the problem.
Asset Value=5,000
Exposure Factor=10%
Annual Rate of Occurrence=10
SLE=AV(asset value)*EF(exposure factor)
SLE=5,000 (cost of the server)* 10% (exposure factor)
500= 5,000*.10
You then can take the calculated SLE of 500 and factor it in. Without calculating the SLE you will not get a correct response.
ALE= ARO (annual rate of occurrence) * SLE (single loss expectancy)
ALE= 10 (ARO) * 500 (SLE)
5,000=10*500
The correct answer is 5,000 dollars
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Christopher Beck. You are the best teacher here. that is exactly how the calculation should go. Step by Step. Your analysis is very simple and clear. I thought you are a cissp man.
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Good analysis Christopher
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Amazing, this is a handy web page
COUNTERSTRIKE http://www.das-hilfsforum.de/hilfsforum/user/1291-whtdenisha/
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