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Exam Professional Cloud Developer topic 1 question 33 discussion

Actual exam question from Google's Professional Cloud Developer
Question #: 33
Topic #: 1
[All Professional Cloud Developer Questions]

Your application is controlled by a managed instance group. You want to share a large read-only data set between all the instances in the managed instance group. You want to ensure that each instance can start quickly and can access the data set via its filesystem with very low latency. You also want to minimize the total cost of the solution.
What should you do?

  • A. Move the data to a Cloud Storage bucket, and mount the bucket on the filesystem using Cloud Storage FUSE.
  • B. Move the data to a Cloud Storage bucket, and copy the data to the boot disk of the instance via a startup script.
  • C. Move the data to a Compute Engine persistent disk, and attach the disk in read-only mode to multiple Compute Engine virtual machine instances.
  • D. Move the data to a Compute Engine persistent disk, take a snapshot, create multiple disks from the snapshot, and attach each disk to its own instance.
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
by saurabh1805 at Nov. 8, 2020, 9:35 p.m.

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celia20200410
Highly Voted 2 years, 9 months ago
C: https://cloud.google.com/compute/docs/disks/sharing-disks-between-vms#use-multi-instances Share a disk in read-only mode between multiple VMs Sharing static data between multiple VMs from one persistent disk is "less expensive" than replicating your data to unique disks for individual instances. https://cloud.google.com/compute/docs/disks/gcs-buckets#mount_bucket Mounting a bucket as a file system You can use the Cloud Storage FUSE tool to mount a Cloud Storage bucket to your Compute Engine instance. The mounted bucket behaves similarly to a persistent disk even though Cloud Storage buckets are object storage. https://github.com/GoogleCloudPlatform/gcsfuse/ Cloud Storage FUSE performance issues: Latency, Rate limit
upvoted 7 times
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__rajan__
Most Recent 7 months, 1 week ago
Selected Answer: C
Option C is Correct.
upvoted 1 times
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jcataluna
1 year, 4 months ago
Selected Answer: C
A & C are candidates. with very low latency <- C
upvoted 1 times
wanrltw
5 months, 2 weeks ago
C also minimizes the total cost
upvoted 1 times
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tomato123
1 year, 8 months ago
Selected Answer: C
C is correct
upvoted 2 times
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nhadi82
1 year, 9 months ago
Selected Answer: C
A & C are correct answers, however the question states for low latency hence C is the correct one..
upvoted 1 times
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[Removed]
2 years, 9 months ago
B) is not correct because we want each instance start quickly.
upvoted 1 times
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syu31svc
2 years, 10 months ago
https://cloud.google.com/compute/docs/disks/sharing-disks-between-vms: "Maximum attached instances: 2" I would take B
upvoted 1 times
[Removed]
2 years, 9 months ago
Your link is for write mode not read only !. C) is the answer.
upvoted 2 times
syu31svc
2 years, 9 months ago
You're right. C it is then
upvoted 2 times
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yuchun
2 years, 10 months ago
Both A and C can work, but FUSE will cause more latency
upvoted 1 times
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StelSen
3 years, 2 months ago
Option: C is correct. https://cloud.google.com/compute/docs/disks/add-persistent-disk#use-multi-instances Option-A: Technically will work. But not low latency. https://cloud.google.com/compute/docs/disks/gcs-buckets#mount_bucket
upvoted 4 times
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saurabh1805
3 years, 5 months ago
i will suggest option B keeping cost in mind.
upvoted 1 times
saurabh1805
3 years, 5 months ago
* C is correct
upvoted 4 times
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