Practice Test 4 | Google Cloud Certified Professional Cloud Architect | Dumps | Mock Test
You have several Python apps in App Engine Standard. You want to start to experience continuous deployment but you want to handle the process in the best way possible.
You need to deploy a new release for an app: myapp-a. The new release is referred to as myapp-b.
myapp-b has some deeply tested updates regarding the bugs. The main requirement is that the transition to the new version which is myapp-b has to be smooth and without any disruptions.
myapp-b has new features and updates and you want to do an A / B testing, introducing the new version for only 50% of the traffic.
What are the correct and best commands to execute? (Select TWO)
A. gcloud app services set-traffic myapp-b splits 1=.5,2=.5 split-by cookie
B. gcloud app services set-version myapp-a splits 1=.5,2=.5 split-by cookie
C. Add warmup and issue; gcloud app services set-traffic myapp-b –split 2=1
D. gcloud app services set-traffic myapp-a –splits 2=1
E. gcloud app services set-traffic myapp-b splits 1=.5,2=.5 split-by IP
F. gcloud app services set-version myapp-a splits 1=.5,2=.5 split-by IP
G. gcloud app services set-traffic myapp-b –splits 2=1 –migrate
H. Add warmup and issue; gcloud app services set-traffic myapp-a –splits 2=1 –migrate
Correct Answers: A and H
For myapp-b, the best solution is a migration that moves traffic from one version to a new version gradually. In this way, you will not experience problems.
Otherwise, all instances of the old version will immediately shut down. There will be a latency spike due to the loading of the requests for the new version; and when warmup requests are not enabled, user requests are sent to those new instances before they have been created.
For myapp-a, the best solution is to use “Traffic splitting”, which distributes a percentage of traffic to different versions of your application.
Also, in this case, it is advisable to enable warmup requests, so that new instances are put to work only when they are ready to go.
The other answers don’t fulfill the explained solution to the requirements.
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