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Exam Professional Cloud Architect topic 1 question 131 discussion

Actual exam question from Google's Professional Cloud Architect
Question #: 131
Topic #: 1
[All Professional Cloud Architect Questions]

Your company wants you to build a highly reliable web application with a few public APIs as the backend. You don't expect a lot of user traffic, but traffic could spike occasionally. You want to leverage Cloud Load Balancing, and the solution must be cost-effective for users. What should you do?

  • A. Store static content such as HTML and images in Cloud CDN. Host the APIs on App Engine and store the user data in Cloud SQL.
  • B. Store static content such as HTML and images in a Cloud Storage bucket. Host the APIs on a zonal Google Kubernetes Engine cluster with worker nodes in multiple zones, and save the user data in Cloud Spanner.
  • C. Store static content such as HTML and images in Cloud CDN. Use Cloud Run to host the APIs and save the user data in Cloud SQL.
  • D. Store static content such as HTML and images in a Cloud Storage bucket. Use Cloud Functions to host the APIs and save the user data in Firestore.
Show Suggested Answer Hide Answer
Suggested Answer: D 🗳️
by XDevX at July 1, 2021, 5:55 a.m.

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TotoroChina
Highly Voted 3 years, 11 months ago
Answer should be D, https://cloud.google.com/load-balancing/docs/https/setting-up-https-serverless#gcloud:-cloud-functions https://cloud.google.com/blog/products/networking/better-load-balancing-for-app-engine-cloud-run-and-functions
upvoted 55 times
dguillenca
3 years, 11 months ago
D not use CDN, is D correct answer?
upvoted 1 times
PeppaPig
3 years, 11 months ago
CDN is not needed here. You don't need to service users globally thus latency and locality isn't critical
upvoted 6 times
letonphat
3 years, 7 months ago
IMHO CDN is not storage solution to store static html or image
upvoted 5 times
Warlock7
3 years, 4 months ago
You should look at this https://cloud.google.com/storage/docs/caching
upvoted 1 times
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diluviouniv
3 years, 10 months ago
Spanner is expensive
upvoted 10 times
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BrunoTostes
3 years, 7 months ago
but is it Cloud Functions used for hosting APIs?
upvoted 5 times
turbo8p
2 years, 7 months ago
Can be hosted. It's cost effective since you get charged on per call basis. If no traffic then no cost will be charged.
upvoted 4 times
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parthkulkarni998
1 year, 5 months ago
If CF you want to use for hosting APIs why not option C. to use CloudRun? It too autoscales to 0 instances for no traffic..
upvoted 1 times
huuthanhdlv
1 year ago
CE using cloud CDN to host static contents which is incorrect.
upvoted 1 times
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mikesp
3 years, 7 months ago
IMHO, i agree with you. Furthermore: Cloud Storage buckets are a good choice for static web content. Cloud storage buckets behave like a CDN Network: https://cloud.google.com/storage/docs/caching So it is lower cost than CDN.
upvoted 8 times
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XDevX
Highly Voted 3 years, 11 months ago
IMHO it is d), not b). Reason is that you don't need Cloud Spanner just to store user data - FireStore is the better solution. Additionally, I see no indications concerning the requirement to use GKE... Please correct me when I am wrong.
upvoted 18 times
Andrea67
3 years, 6 months ago
agree with u
upvoted 3 times
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tosinogunfile
1 year, 5 months ago
That's correct
upvoted 1 times
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tosinogunfile
1 year, 5 months ago
That's correct
upvoted 1 times
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francisco94
Most Recent 2 months ago
Selected Answer: D
D correct answer
upvoted 1 times
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apb98
2 months, 2 weeks ago
Selected Answer: C
C. Even though Cloud CDN is not a storage system, option C implies that static content is served through a CDN-enabled LB (usually backed by Cloud Storage). This fits well with the requirement for cost-efficiency, scalability, and LB. Option D is valid too, but it doesn’t mention LD and uses Firestore, which may not fit structured user data. Therefore, C remains the best match for Google’s exam logic.
upvoted 1 times
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halifax
3 months, 1 week ago
Selected Answer: C
This question doesn't have a correct answer!!! Re-read the question again "You want to leverage Cloud Load Balancing" Option D doesn't come with load balancer options plus Cloud function is good for event-triggering tasks not necessarily for sustained high-traffic API endpoints. Option C can work but there is no storage provided! Cloud CDN is for Caching, NOT for permanent storage.
upvoted 1 times
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plumbig11
5 months, 1 week ago
Selected Answer: D
This question is more about costs so Cloud storage+firestore
upvoted 2 times
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VegasDegenerate
5 months, 2 weeks ago
Selected Answer: D
B is absolutely diabolical for "Cost effective"
upvoted 2 times
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NitinV
11 months, 1 week ago
As per ChatGPT , answer is C
upvoted 1 times
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mshafa
11 months, 1 week ago
xcvxcv
upvoted 1 times
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Diwz
1 year, 2 months ago
Answer is D. Solution should be cost effective and highly reliable. Cloud storage and firestore is suitable .
upvoted 1 times
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krokskan
1 year, 3 months ago
Selected Answer: D
absolutely D because kubernetes is not cost effective. cloud functions are a better shot
upvoted 1 times
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convers39
1 year, 5 months ago
Selected Answer: D
CDN is for caching. For static website hosting a storage bucket is a good choice, thus A and C are eliminated. B, Cloud Spanner, my nightmare. I accidentally created an empty cloud spanner and it burned like 30-40 USD per day! I got a huge amount of billing from GCP that month! No way to be cost-effective. D, Cloud Functions are good for simple API services and have no cost if not in use. SQL or NoSQL for user data is not a strong factor here, either should be fine.
upvoted 4 times
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AWS_Sam
1 year, 5 months ago
The correct answer with the lowest cost is D
upvoted 1 times
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tamer_m_Saleh
1 year, 5 months ago
in B) it says zonal GKE with worker nodes in multiple zones how zonal and in multiple zones?! And that 100% eliminate B
upvoted 2 times
Gino17m
1 year, 1 month ago
"zonal" is for conrol plane, workers can be in multiple zones in multi-zone zonal cluster - the wording is just strange, see: https://cloud.google.com/kubernetes-engine/docs/how-to/creating-a-zonal-cluster Nevertheless B is still incorrect
upvoted 1 times
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Jconnor
1 year, 6 months ago
Actually it is B. Highly reliable, using Load Balancer, Spikes and several API. D is less reliable, as functions will take long to cold start and will have a time out and not using LB. The only draw back is cost.
upvoted 1 times
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thewalker
1 year, 7 months ago
Selected Answer: D
User data in a relational database is not a good option, A B C are ruled out. Left with D - User data in Firestore.
upvoted 1 times
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MiguelMiguel
1 year, 7 months ago
D is the correct option since CDN is not for storage of html content, so you have only the option B and D. And the option B required that you have a containerezed application in other way, you can't use k8s. So the option is D.
upvoted 1 times
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A (35%)
C (25%)
B (20%)
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