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Q1. Which component is responsible for managing the deployment of an application running in IBM Bluemix PaaS?
A. Router
B. Load Balancer
C. Health Manager
D. Cloud Controller
Answer: D
Q2. Why would the Load Impact service in IBM Bluemix PaaS be used?
A. For its ability to manage a sudden load increase in an application.
B. For its ability to replicate instances across IBM Bluemix PaaS regions.
C. For its ability to simulate user loads on IBM Bluemix PaaS applications.
D. For its ability to increase application availability by increasing application instances.
Answer: C
Q3. How are viewscreated in Cloudant?
A. by creating a PrimaryIndex withdoc id’s
B. by creating a Secondary Index with doc id’s
C. by creating a Primary Index using the Map function
D. by creating a Secondary Index using the Map function
Answer: C
Q4. According to this application Overview panel image, how is the memory quota (measured in MB) applied to the two instances?
A. each instance gets 512 MB of memory
B. each instance shares the available memory
C. the instance that receives the most traffic gets the most memory
D. the instance will divide the memory quota evenly, each receiving 256 MB of memory
Answer: B
Q5. The following document exists in a Cloudant database namedinvoicescreated by usercandidate
What information is required in order to delete it?
A. the document’s_idonly
B. the document_idanduser
C. the document’s most recent_revvalue only
D. the document’s_idand most recent_revvalue
Answer: D
Explanation:
To delete a document you need its _id and _rev, the easiest way to get the _rev for a known document _id is to issue a HEAD request against the document:
Command
curl -i -X HEADhttps://[username].cloudant.com/crud/[doc_id]
Response
HTTP/1.1 200 OK X-Couch-Request-ID: 89d9d456 Server: CouchDB/1.0.2 (Erlang OTP/R14B) ETag: "2-e4b98cc0fc2a181e4eb26f8ad41fa5fe" Date: Mon, 04 Jun 2012 14:47:15 GMT Content-Type: text/plain; charset=utf-8 Content-Length: 113 Cache-Control: must-revalidate
Q6. A developer’s application is falling to work correctly in IBM Bluemix PaaS. The developer is unsure if the problem is caused by a bad environment value or a bug in the code. How should they proceed?
A. Rebind the service associated with VCAP_SERVICES.
B. Usecf env <app_name>to get all the environment variables forthe application.
C. Delete the service associated with VCAP_SERVICES and recreate it without rebinding.
D. Usecf set-env <app_name>to set all environment variables to null for the application.
Answer: A
Q7. A developer is going into production with aconsumerweb application in IBM Bluemix PaaS. The developer is keen to understand how the application is performing to maximize customer retention.
The scaling history for the application shows repetitive scale out and scale in actions. To reduce resources used by each instance startup, the developer wants the scaling service to wait longer before taking action. What parameter should be changed and how?
A. increase the cooldown period for scaling in
B. decrease the cooldown period for scaling in
C. increase the cooldown period for scaling out
D. decrease the cooldown period for scaling out
Answer: D
Q8. Based on the Twelve-Factor App methodology, how should developers share common code between two Node.js applications in IBM Bluemix PaaS?
A. duplicate the common code in each application repository
B. use only one repository for both applications and the common code
C. use one repository for both applications and another repository for the common code
D. create a npm package for the common code and add the dependency to it for both applications
Answer: B