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Arcitura Education C90.03 Exam - Topic 3 Question 18 Discussion

Cloud Service Consumer A invokes Cloud Service A from Cloud X (owned by Cloud Provider X) (1). To fulfill the request from Cloud Service Consumer A, Cloud Service A needs to invoke Cloud Service B that resides on Cloud Y (owned by Cloud Provider Y) (2). After completing its processing, Cloud Service B sends a response to Cloud Service A (3). Cloud Service A verifies the response and then finally sends its response to Cloud Service Consumer A (4).The guaranteed availability of the Cloud Service A implementation is 95% and the guaranteed availability of the Cloud Service B implementation is 95%. Which of the following statements accurately describes the actual availability that Cloud Service Consumer A can receive based on the described scenario?
A) Because Cloud Service Consumer A's response message is processed by two separate cloud services, the combined availability increases as follows: 1 - (1 - 0.95) X (1 - 0.95) = 0.9975 or 99.75% and D) As a result of the dependency formed by Cloud Service Aon Cloud Service B, the combined availability decreases significantly as follows: (0.95 X 0.95) - 0.1 = 0.8025 or 80.25%
B) Because Cloud Service A acts as both a cloud service and cloud service consumer in order to process Cloud Service Consumer B's request message, Cloud Service A forms a dependency on Cloud Service B. As a result, the combined availability decreases, as follows: 0.95 X 0.95 = 0.9025 or 90.25%
C) Cloud Service Consumer A benefits from redundant cloud service implementations, thereby increasing the guaranteed availability as follows: 1 - (1 - (0.95 - 0.1)) X (1 - (0.95 - 0.1)) = 0.9775 or 97.75%

Arcitura Education C90.03 Exam - Topic 3 Question 18 Discussion

Actual exam question for Arcitura Education's C90.03 exam
Question #: 18
Topic #: 3
[All C90.03 Questions]

Cloud Service Consumer A invokes Cloud Service A from Cloud X (owned by Cloud Provider X) (1). To fulfill the request from Cloud Service Consumer A, Cloud Service A needs to invoke Cloud Service B that resides on Cloud Y (owned by Cloud Provider Y) (2). After completing its processing, Cloud Service B sends a response to Cloud Service A (3). Cloud Service A verifies the response and then finally sends its response to Cloud Service Consumer A (4).

The guaranteed availability of the Cloud Service A implementation is 95% and the guaranteed availability of the Cloud Service B implementation is 95%. Which of the following statements accurately describes the actual availability that Cloud Service Consumer A can receive based on the described scenario?

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Suggested Answer: A, D

by Lucina at Jun 16, 2022, 07:31 PM

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Janella
7 months ago
D looks like the right answer to me!
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Dortha
7 months ago
C seems off, not sure about that calculation.
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Elmer
7 months ago
Wait, how does redundancy work in this case?
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Charolette
8 months ago
I agree, B makes more sense here.
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Junita
8 months ago
A is totally wrong, the availability actually decreases.
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Karima
8 months ago
I feel like the dependency between Cloud Service A and B could lower the overall availability, but I can't quite remember the exact formula to use for that.
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Naomi
8 months ago
I vaguely recall that redundancy can improve availability, but I'm confused about how that applies here since we have two services instead of one.
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Katina
8 months ago
I think I practiced a similar question where the combined availability was calculated by multiplying the individual availabilities. So, option B seems plausible to me.
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Jolanda
8 months ago
I remember studying how to calculate combined availability, but I'm not sure if the dependencies between services affect it directly.
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Reena
8 months ago
Hmm, this seems like a tricky one. I'll need to think carefully about the different file types and how they're represented in the Master File Table.
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Glendora
8 months ago
Access control list sounds like the right answer here. Routers and firewalls use ACLs to determine packet forwarding and filtering.
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Julianna
8 months ago
I think the answer might be B, but I'm not entirely sure about the 'Freeze Transformations' term. I remember it was important for setting the zero position.
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Chauncey
8 months ago
Ah, this is a good one. I'll need to apply my knowledge of the TouchEvent object to choose the right properties.
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Velda
8 months ago
Hmm, I'm not sure about this one. I'll have to think it through carefully.
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Alyce
1 year ago
Who comes up with these cloud service scenarios anyway? It's like a game of 'pass the availability buck'!
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Carin
11 months ago
Frederic: Yeah, that makes sense. So, the combined availability would be lower than the individual availability of each service.
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Frederic
11 months ago
User 2: I think the availability decreases because of the dependency between Cloud Service A and Cloud Service B.
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Selma
1 year ago
User 1: I know, right? It's like a never-ending loop of dependencies.
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Ammie
1 year ago
I'm leaning towards Option D. It takes the dependency into account and provides a more realistic reduction in overall availability.
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Melissa
1 year ago
User 3: Option D seems like the most realistic choice in this scenario.
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Tomas
1 year ago
User 2: Yeah, I agree. It's important to take that into account when calculating the overall availability.
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Stephaine
1 year ago
User 1: I think Option D makes sense, considering the dependency between the cloud services.
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Pamella
1 year ago
Hmm, I'm not sure about Option C. While redundancy can increase availability, the question states that the guaranteed availability of each service is 95%, so I don't think a 97.75% combined availability is accurate.
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Iesha
11 months ago
I think Option A makes more sense, as it calculates the combined availability based on the individual availabilities of the services.
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Ilene
12 months ago
So, which option do you think accurately describes the actual availability?
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Catina
12 months ago
I agree, Option C doesn't seem to align with the information provided in the question.
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Jade
12 months ago
Option C seems to be incorrect because the guaranteed availability of each service is 95%.
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Clarence
12 months ago
User 4: I see your point, Clarence. Option B does make sense based on the scenario described.
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Chery
12 months ago
User 3: Yeah, Option C seems to overestimate the combined availability considering the guaranteed availability of each service.
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Geraldine
12 months ago
User 2: I agree, the math checks out for Option A.
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Benton
1 year ago
User 3: Option B seems more logical to me. Cloud Service A forming a dependency on Cloud Service B could decrease the availability.
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Jettie
1 year ago
User 2: I agree, the math checks out for Option A.
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Alex
1 year ago
User 1: I think Option A is correct because the combined availability increases with two separate cloud services.
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Buck
1 year ago
User 1: I think Option A is correct. The combined availability increases when processing through two separate cloud services.
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Emmanuel
1 year ago
Option B seems to make the most sense. When a service depends on another service, the overall availability is reduced due to the chained dependencies.
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Viva
1 year ago
User 2: I agree. Chained dependencies can definitely impact overall availability.
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Quentin
1 year ago
User 1: I think option B is correct. Dependencies can lower availability.
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Alysa
1 year ago
But C also makes sense, as there are redundant cloud service implementations.
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Malcom
1 year ago
I disagree, I believe the answer is B because there is a dependency formed.
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Alysa
1 year ago
I think the answer is A because the combined availability increases.
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