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Exam Professional Cloud Architect topic 1 question 147 discussion

Actual exam question from Google's Professional Cloud Architect
Question #: 147
Topic #: 1
[All Professional Cloud Architect Questions]

Your company has an enterprise application running on Compute Engine that requires high availability and high performance. The application has been deployed on two instances in two zones in the same region in active-passive mode. The application writes data to a persistent disk. In the case of a single zone outage, that data should be immediately made available to the other instance in the other zone. You want to maximize performance while minimizing downtime and data loss.
What should you do?

  • A. 1. Attach a persistent SSD disk to the first instance. 2. Create a snapshot every hour. 3. In case of a zone outage, recreate a persistent SSD disk in the second instance where data is coming from the created snapshot.
  • B. 1. Create a Cloud Storage bucket. 2. Mount the bucket into the first instance with gcs-fuse. 3. In case of a zone outage, mount the Cloud Storage bucket to the second instance with gcs-fuse.
  • C. 1. Attach a regional SSD persistent disk to the first instance. 2. In case of a zone outage, force-attach the disk to the other instance.
  • D. 1. Attach a local SSD to the first instance disk. 2. Execute an rsync command every hour where the target is a persistent SSD disk attached to the second instance. 3. In case of a zone outage, use the second instance.
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
by juma_david at Aug. 25, 2021, 8:25 a.m.

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juma_david
Highly Voted 3 years, 4 months ago
Answer C https://cloud.google.com/compute/docs/disks/repd-failover
upvoted 44 times
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[Removed]
Highly Voted 3 years, 2 months ago
C is right answer. C. 1. Attach a regional SSD persistent disk to the first instance. 2. In case of a zone outage, force-attach the disk to the other instance. gcs-fuse is slower than of regional SSD PD. **** Admin: You need to correct lots of questions. Some of the marked answers are nonsense, these must be revisited based on experts comments.
upvoted 42 times
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Sephethus
Most Recent 6 months, 2 weeks ago
Selected Answer: B
BigQuery cannot use customer supplied KMs keys only customer managed keys. The other options add too much complexity to the problem.
upvoted 1 times
Sephethus
6 months, 2 weeks ago
Somehow I commented on the wrong answer please delete.
upvoted 1 times
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afsarkhan
7 months, 3 weeks ago
Selected Answer: C
C makes a better sense than any other option
upvoted 1 times
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dija123
8 months, 2 weeks ago
Selected Answer: C
Agree with Regional SSD persistent
upvoted 1 times
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[Removed]
1 year ago
C In the event that the primary zone fails, you can fail over your regional Persistent Disk volume to a VM in another zone by using a force-attach operation. When there's a failure in the primary zone, you might not be able to detach the disk from the VM because the VM can't be reached to perform the detach operation. Force-attach operation lets you attach a regional Persistent Disk volume to a VM even if that volume is attached to another VM
upvoted 2 times
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RaviRS
1 year, 3 months ago
Selected Answer: C
I don't get why B has been given as answer... GCS-FUSE brings in additional complexity and it also doesn't serve the same purpose as effectively as regional SSD does.
upvoted 1 times
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DS2023
1 year, 6 months ago
Selected Answer: C
Ans: C, please check - https://cloud.google.com/compute/docs/disks/high-availability-regional-persistent-disk
upvoted 1 times
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dbsmk
1 year, 9 months ago
https://cloud.google.com/compute/docs/disks/repd-failover Seems C is correct
upvoted 1 times
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examch
1 year, 11 months ago
C is the correct answer, https://cloud.google.com/compute/docs/disks/repd-failover#zonal_failures
upvoted 1 times
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surajkrishnamurthy
2 years ago
Selected Answer: C
Answer is C
upvoted 1 times
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zetalexg
2 years ago
Admins please take some time and redo the answers, put them to match at least the most voted ones, would help a lot.
upvoted 7 times
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ashrafh
2 years, 1 month ago
Selected Answer: C
Regional persistent disk is a storage option that provides synchronous replication of data between two zones in a region. Regional persistent disks can be a good building block to use when you implement HA services in Compute Engine.
upvoted 2 times
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megumin
2 years, 1 month ago
Selected Answer: C
C is ok
upvoted 1 times
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Mahmoud_E
2 years, 2 months ago
Selected Answer: C
C is the right answer
upvoted 1 times
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Nirca
2 years, 3 months ago
Selected Answer: C
You want to maximize performance while minimizing downtime and data loss
upvoted 1 times
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RitwickKumar
2 years, 4 months ago
Selected Answer: C
Inline with the current architecture itself "The application writes data to a persistent disk."
upvoted 1 times
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