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Q21. Applications A and B are configured to use IBM MQ Light for Bluemix messaging capabilities. Application A publishes messages to a topic. Application B subscribes to the same topic in order to receive the messages published by Application A. What occurs when Application A publishes the message after Application B goes down?
A. Destination stores the message and it will be received if Application B comes back up before the destination time-to-live expires.
B. Application A receives a notification from the destination that Application B is down.
C. Topic stores the message forever, and the message will be received by Application B after it comes back up.
D. Destination stores the copy of the message for one hour. If Application B does not come back up within one hour the message will be lost.
Answer: A
Explanation:
MQ Light messaging provides two models for delivery assurance, at most once, and at least once. The first is appropriate when occasional loss of data caused by a communication disruption is acceptable, and the second is required when there can be no loss of data. When using at least once, duplicate messages may appear around communication disruptions and they should to be programmatically discarded. MQ Light buffers messages based upon message and destination time-to-live. When an application subscribes to a topic it may specify a destination time-to-live, which will cause MQ Light to store messages at the destination in the event of a receiving application crash. After the destination time-to-live exipres, MQ Light will discard all held messages and stops storing new messages.
Q22. What are the two key elements defined in an Organization inIBMBluemix PaaS?(Select two.)
A. Cities
B. Users
C. Routers
D. Spaces E Regions
Answer: B,D
Explanation:
Organizations and spaces are organizational units in the infrastructure that can store and track application resources. An organization contains domains, spaces, and users. A space contains applications and services. The default spaces are Development, Production, and Staging.
Reference:http://www.ibm.com/developerworks/cloud/library/cl-bluemix-summary/
Q23. The docker search command$ sudo docker search centosproduced the following output:
NAMEDESCRIPTIONSTARS
OFFICIALTRUSTED
centosOfficialCentOS6 Image as of 12 April 201488
Which command should be issued to download the centos image?
A. cp docker/centos
B. sudo docker push centos
C. sudo docker pull centos
D. sudo docker download centos
Answer: C
Reference:http://www.ibm.com/developerworks/cloud/library/cl-docker-environment-bluemix-trs/index.html
Q24. 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)
Q25. A developer has an application and they wish to make it availableas a service through IBM Cloud. Which two options are available for publishing the solution?(Select two.)
A. IBM Cloud
B. IBM SoftLayer
C. IBM Cloud Marketplace
D. IBM Connections Cloud
E. IBM Bluemix PaaS as a third-party service
Answer: C,E
Q26. In a hierarchical organization of related work items in the Track and Plan feature of IBM Bluemix DevOps Services, which type of work item would be at the top?
A. Epic
B. Task
C. Story
D. Detect
Answer: C
Q27. What is the output of thecf appscommand?
A. a list of all the applications and services for the developer’s organization
B. a list of services bound to each application for the developer’s organization
C. a list of all the running applications on IBM Bluemix PaaS with application owner ID
D. a list of all the applications in the developer’s space with the name and resource utilization
Answer: D
Q28. How are managed services from the IBM Bluemix PaaS catalog used in an application?
A. Services can only be used by anIBM Bluemix PaaS application with a signed one year agreement.
B. Services can be found through the IBM Cloud Marketplace and must be purchased before using them.
C. Services are ready for immediate use and can be used by any IBM Bluemix PaaS application after binding.
D. Services must be downloaded from IBM, third-party, or community locations and installed on a virtual machine before using them.
Answer: C