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Alibaba ACA-Cloud1 Exam - Topic 5 Question 79 Discussion

Actual exam question for Alibaba's ACA-Cloud1 exam
Question #: 79
Topic #: 5
[All ACA-Cloud1 Questions]

Cloud disks are reliable because they use_________ to provide block-level data storage for ECS instances, ensuring 99.9999999% data reliability.

Show Suggested Answer Hide Answer
Suggested Answer: A, C

OSS object types are the storage classes that define the performance and cost of storing objects in OSS.OSS supports four object types: Standard, Infrequent Access (IA), Archive, and Cold Archive1.Each object type has different characteristics and scenarios, such as availability, durability, minimum storage duration, and storage overhead2.

Object lifecycle management is a feature that allows you to manage objects efficiently and minimize costs throughout the lifecycle of the objects in your bucket. Lifecycle settings create a set of rules that help define the actions that an OSS bucket must perform on a group of objects.For example, you can configure lifecycle rules to automatically delete expired objects, or convert the storage class of objects to a lower-cost object type3.

You can configure lifecycle rules based on the object type of the objects in your bucket. You can specify the object type as a parameter for the lifecycle rule, and OSS will apply the rule to the objects that match the object type.For example, you can create a lifecycle rule to convert the object type of objects from Standard to IA after 30 days, and then to Archive after 180 days4.

Therefore, the correct answer is A. Infrequent access and C. Archive, as these are two of the object types that can be configured as parameters for object lifecycle management. B. Snapshot and D.Chunk are not valid object types in OSS.Reference:1:Overview of object types - Object Storage Service - Alibaba Cloud Documentation Center2:Object Storage Service (OSS) - Alibaba Cloud3:Manage Your OSS Storage Costs Using Lifecycle Policies - Alibaba Cloud4:Lifecycle rules based on the last modified time - Object Storage Service - Alibaba Cloud Documentation Center.


Contribute your Thoughts:

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Norah
4 months ago
A distributed file system? Really? Sounds too good to be true.
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Quentin
4 months ago
99.9999999% reliability? That's wild!
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Jessenia
4 months ago
Not so sure about that, C sounds plausible too.
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Clarence
4 months ago
Totally agree, A is definitely the right choice!
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Major
4 months ago
I think it's A, the redundant copies make sense.
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Salena
5 months ago
I remember practicing a question similar to this, and I think it emphasized the importance of having multiple copies, which makes me lean towards A again.
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Bobbie
5 months ago
I vaguely recall that a file system isn't enough for this level of reliability, so B seems unlikely.
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Regenia
5 months ago
I'm not entirely sure, but I feel like it could also be C. Didn't we cover something about distributed systems in class?
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Glendora
5 months ago
I think the answer might be A, since I remember something about redundancy being key for reliability.
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Eloisa
5 months ago
The wording of this question is a bit tricky, but I think I can figure it out if I break it down step-by-step.
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Kiley
5 months ago
I'm a bit confused by the technical details in this question. I'll need to review my notes on cloud storage.
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Quiana
5 months ago
Okay, let's see... I think the key is understanding how cloud disks provide data reliability.
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Edelmira
5 months ago
Hmm, I'm not sure about this one. I'll have to think it through carefully.
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Sharee
5 months ago
This question seems straightforward, I'm pretty confident I know the answer.
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Helene
11 months ago
A Linux file system? Really? I thought we were talking about cloud technology here, not old-school on-premises storage.
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Moira
9 months ago
D) a Linux file system
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Alba
9 months ago
C) a double copy distributed system
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Golda
9 months ago
B) a file system
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Lisandra
10 months ago
A) a distributed file management system with 3 redundant copies
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Margret
11 months ago
I wonder if the cloud disks also come with a money-back guarantee for data loss. That would really seal the deal for me!
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Nana
10 months ago
I'm not sure about that, but it would definitely be a great feature to have!
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Nana
10 months ago
A) a distributed file management system with 3 redundant copies
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Jerry
11 months ago
Hmm, a distributed file management system with 3 redundant copies sounds like the way to go. Reliability is key when it comes to cloud storage.
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Dwight
11 months ago
Wow, 99.9999999% data reliability? That's like, what, a one in a billion chance of data loss? I'm sold on the cloud disks!
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Lilli
11 months ago
I'm not sure, but I think it might be C) a double copy distributed system. It also sounds reliable to me.
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Nickolas
11 months ago
I agree with Talia, because having 3 redundant copies ensures high data reliability.
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Talia
12 months ago
I think the answer is A) a distributed file management system with 3 redundant copies.
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