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

Actual exam question for Arcitura Education's C90.03 exam

Question #: 18
Topic #: 3

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?

ABecause 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%

BBecause 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%

CCloud 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%

DAs 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%

Show Suggested Answer

Suggested Answer: A, D

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

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Janella

5 months ago

D looks like the right answer to me!

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Dortha

6 months ago

C seems off, not sure about that calculation.

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Elmer

6 months ago

Wait, how does redundancy work in this case?

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Charolette

6 months ago

I agree, B makes more sense here.

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Junita

6 months ago

A is totally wrong, the availability actually decreases.

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Karima

6 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

6 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

6 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

6 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

7 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

7 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

7 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

7 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

7 months ago

Hmm, I'm not sure about this one. I'll have to think it through carefully.

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Alyce

11 months 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

10 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

10 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

11 months ago

User 1: I know, right? It's like a never-ending loop of dependencies.

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Ammie

11 months 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

11 months ago

User 3: Option D seems like the most realistic choice in this scenario.

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Tomas

11 months ago

User 2: Yeah, I agree. It's important to take that into account when calculating the overall availability.

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Stephaine

11 months ago

User 1: I think Option D makes sense, considering the dependency between the cloud services.

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Pamella

12 months 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

10 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

10 months ago

So, which option do you think accurately describes the actual availability?

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Catina

10 months ago

I agree, Option C doesn't seem to align with the information provided in the question.

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Jade

10 months ago

Option C seems to be incorrect because the guaranteed availability of each service is 95%.

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Clarence

10 months ago

User 4: I see your point, Clarence. Option B does make sense based on the scenario described.

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Chery

10 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

10 months ago

User 2: I agree, the math checks out for Option A.

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Benton

11 months 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

11 months ago

User 2: I agree, the math checks out for Option A.

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Alex

11 months ago

User 1: I think Option A is correct because the combined availability increases with two separate cloud services.

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Buck

11 months 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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