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Exam Professional Cloud Developer topic 1 question 31 discussion

Actual exam question from Google's Professional Cloud Developer
Question #: 31
Topic #: 1
[All Professional Cloud Developer Questions]

You have an application in production. It is deployed on Compute Engine virtual machine instances controlled by a managed instance group. Traffic is routed to the instances via a HTTP(s) load balancer. Your users are unable to access your application. You want to implement a monitoring technique to alert you when the application is unavailable.
Which technique should you choose?

  • A. Smoke tests
  • B. Stackdriver uptime checks
  • C. Cloud Load Balancing - heath checks
  • D. Managed instance group - heath checks
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️
by saurabh1805 at Nov. 8, 2020, 8:29 p.m.

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yuchun
Highly Voted 2 years, 10 months ago
C,D can both check but not 'alert', so I think the answer is B
upvoted 5 times
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__rajan__
Most Recent 7 months, 1 week ago
Selected Answer: B
Stackdriver Uptime Check is the correct option as we can configure it to send an alert when the service is down.
upvoted 1 times
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Chuckq
1 year ago
Alert. So B.
upvoted 1 times
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tomato123
1 year, 8 months ago
Selected Answer: B
B is correct
upvoted 3 times
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herocc
2 years, 3 months ago
B is right one
upvoted 2 times
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syu31svc
2 years, 9 months ago
https://cloud.google.com/load-balancing/docs/l7-internal "If a backend becomes unhealthy, traffic is automatically redirected to healthy backends within the same region. If all backends are unhealthy, the load balancer returns an HTTP 503 Service Unavailable response." "One or more backends must be connected to the backend service. Because the scope of an internal HTTP(S) load balancer is regional, not global, clients and backend VMs or endpoints must all be in the same region. Backends can be instance groups or NEGs in any of the following configurations: Managed instance groups (zonal or regional)" I would take C as the answer since the application runs on the MIG and traffic is being controlled by the load balancer
upvoted 2 times
syu31svc
2 years, 9 months ago
Disregard what I said about C being the answer Correct answer is B as Stackdriver or Cloud Monitoring uptime checks can be used to check if the application is unavailable. https://cloud.google.com/monitoring/uptime-checks: "An uptime check is a request sent to a resource to see if it responds. You can use uptime checks to determine the availability of a VM instance, an App Engine service, a URL, or an AWS load balancer."
upvoted 6 times
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kernel1973
2 years, 10 months ago
B. Uptime check can provide the functionality of control the status of the VMs
upvoted 1 times
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saurabh1805
3 years, 5 months ago
B is correct answer, Uptime provide you a machanism to do halth check on URL.
upvoted 2 times
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C (25%)
B (20%)
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