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2021 Apr C5050-285 free practice exam
Q21. What are the two key benefits of Cloudant Sync? (Select two.)
A. Sensitive data is encrypted by default before replication.
B. Replication is extremely fast because it is limited to documents less than2KB in size.
C. The distributed database architecture is more scalable thana single central database.
D. It enables mobile device apps accessing the database to operate without a network connection.
E. It significantly reduces the amount of storage needed once all participating databases are in sync.
Answer: A,C
Q22. 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
Q23. When defining a Cloudant view, what must be defined?
A. a map function
B. a sort function
C. a reduce function
D. a rereduce function
Answer: A
Q24. Based on the Twelve-Factor App methodology, where is the best place to store external configuration credentials in IBM Bluemix PaaS?
A. in the source code
B. in a user configuration file
C. in an application database
D. in the VCAP_SERVICESenvironment variable
Answer: D
Explanation:
Provide any additional configuration information through the VCAP_SERVICES environment variable. Services that are bound to an application also populate VCAP_SERVICES with their configuration attributes.
Most up-to-date C5050-285 exam cram:
Q25. What are three types of work items available in the IBM Bluemix DevOps Services Track & Plan feature?(Select three.)
A. PMR
B. Task
C. Story
D. Sprint
E. Defect
F. Test Plan
Answer: B,C,E
Explanation:
. Bluemix DevOps Services - Track & Plan supports typical activities conducted during agile projects, such as backlog management, sprint planning, and daily scrums
. Understand work items in Track & Plan like epic, story, task, and defect
On an agile project, features to implement are captured in a product backlog, then the team identifies the work for the next Sprint in the Sprint Backlog.
Q26. 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
Q27. Which statement is true of the Cloudant NoSQL service?
A. It prioritizes space savings over availability.
B. It prioritizes immediate consistency over availability.
C. It prioritizes availability over immediate consistency.
D. It prioritizes immediate consistency over performance.
Answer: C
Reference:http://www.redbooks.ibm.com/redpapers/pdfs/redp5126.pdf(p.17)
Q28. 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