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IBM C9030-644 Exam Practice Questions (P. 3)

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Question #11
A client has two data centers separated by a distance of 20 miles (32 kilometers). This client has an application with an RPO target of zero and an RTO target of one hour.
Which GDPS offering fits for this client?
  1. A
    GDPS/Active-Active
  2. B
    GDPS/Global Mirror
  3. C
    GDPS/XRC
  4. D
    GDPS/PPRC

Correct Answer:
D
GDPS/PPRC has the following attributes:
Continuous Availability solution for planned and unplanned outages
Near transparent Disaster Recovery solution
Recovery Time Objective (RTO) less than an hour
Recovery Point Objective (RPO) of zero (optional)
Protects against localized area disasters (distance between sites are limited to 175 km fiber)
Incorrect Answers:
A: GDPS/Active-Active is capable of:
✑ Disaster recovery solution forDB2 and IMS data
✑ Application level granularity
✑ Site switch in seconds (once the event was detected)
✑ RPO in seconds (with the ability to issue reports that can be generated showing orphaned data)
B: GDPS/Global Mirror can provide:
✑ An end-to-end business continuity and recovery solution
✑ Recovery Point Objective (RPO) is designed to be as low as five seconds
✑ Recovery Time Objective (RTO) is designed to be under two hours
C: GDPS/XRC has the following attributes:
✑ Disaster recovery solution
✑ Recovery Time Objective (RTO) between an hour to two hours
✑ Recovery Point Objective (RPO) less than two minutes, typically 3-5 seconds
Etc.
References:
https://www-03.ibm.com/systems/z/advantages/gdps/offerings/

Question #12
A customer has a very large x86 based server farm and wants to consolidate these servers to z Systems.
What tool is best for this analysis?
  1. A
    zSCON
  2. B
    zBNA
  3. C
    zCP3000
  4. D
    zPCR

Correct Answer:
A
zSCON is used for OEM Server Consolidation onto System z.
Incorrect Answers:
B: zBNA is an IBM System z Batch Network Analyzer Tool.
zBNA is a PC-based productivity tool designed to provide a means of estimating the elapsed time for batch jobs solely based on the differences in CPU speeds for a base processor and a target processor, the number of engines on each system, and system capacities; data sharing is not considered. zBNA provides powerful, graphic demonstration of the z/OS batch window.
C: The zCP3000 VM Extract Utility (CP3KVMXT) reads CP Monitor data and generates an Enterprise Data File (EDF) of system and workload related measurements for input into zCP3000. It supports VM running as native or in a partition. It can be used to model interactive VM workloads or workloads under guest operating systems such as Linux.
D: zPCR is a processor Capacity Reference for IBM System z.
zPCR is a PC-based productivity tool under Windows. It is designed to provide capacity planning insight for IBM Z and LinuxONE processors running LPAR configurations with various workload environments under z/OS, z/VM, z/VSE, KVM, Linux, zAware, zACI, SSC, and CFCC. Capacity results are based on IBM's
LSPR data supporting all IBM Z and LinuxONE processors including the new IBM z14 and LinuxONE Emperor (3906) processor families.
References:
https://www-03.ibm.com/systems/data/flash/dk/resources/LSU/LSU_2014_CPS_Tools_Overview.pdf

https://www-03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/PRS1381

Question #13
Which scenario would provide the best opportunity to justify the RoCE Express feature?
  1. A
    Shared memory communication from a distributed Linux application to an MQ Linux guest on a z Systems server.
  2. B
    A z/OS WebSphere application that communicates to DB2 running on a z/OS LPAR on a separate z Systems server.
  3. C
    CICS to CICS communication between z/OS LPARs within the same z Systems server.
  4. D
    A Linux system running MQ on a z Systems server communicating to a z/OS MQ within the same server.

Correct Answer:
A
RoCE Express provides an RDMA capable network adapter providing access to RDMA over Converged Ethernet (RoCE). RoCE provides an optimized network interconnect for System z communications. Along with RoCE Express, z/OS provided a new RDMA based solution called Shared Memory Communications over
RDMA (SMC-R). SMC-R is a sockets based solution providing transparent access to RoCE for TCP sockets applications over standard Ethernet.
The IBM System z13 introduces the capability to share (virtualize) the 10GbE RoCE Express feature among multiple (up to 31) LPARs (or z/VM guest virtual machines) using standardized PCIe virtualization (SR-IOV) technology.
When RoCE Express is exploited by z/OS with SMC-R, the combined solutions provide two key value points:
✑ Improved latency that can provide improved transaction rates for latency sensitive transactional based workloads, and
✑ Lower CPU cost for workloads that transfer larger payloads (i.e. analytics, streaming, FTP, big data, data replication, web services, etc.)
References:
https://www.ibm.com/developerworks/community/blogs/IBMCommserver/entry/ibm_system_z_10gbe_roce_express_virtualization?lang=en

Question #14
A customer is considering upgrading a z114 processor currently used as a standalone coupling facility (CF). The customer wants to upgrade to a z13s 2965-N10, but also wants to install additional capacity on this new z13s for two new LPARs running Linux workloads.
A sizing exercise has determined that the combined CF and Linux workload would total four ICFs, five IFLs, and 600 GB memory. The other systems in the customers environment are zEX12 servers.
The customer is reviewing the design for factors that will influence the hardware configuration.
Which of the following statements is true for this situation?
  1. A
    Integrated Coupling Adapter (ICA) cards can be installed in the zEC12 servers to improve performance.
  2. B
    The number of available LPARs on z13s may not be sufficient to meet all of the customer’s requirements.
  3. C
    The N10 may not provide sufficient InfiniBand slots for coupling links to the other systems in the customer’s sysplex.
  4. D
    The memory requirement of the configuration will force the N20 model type to be configured.

Correct Answer:
B
Incorrect Answers:
A: The IBM Integrated Coupling Adapter (ICA SR), introduced on the IBM z13 and now available on the IBM z13s.
C: Listed below are the minimums and maximums of processor units (PUs) that may be purchased permanently.

D: The IBM 2965 Model N10 supports 64 to 984 GB of memory.
References:
https://www-01.ibm.com/common/ssi/ShowDoc.wss?docURL=/common/ssi/rep_sm/1/877/ENUS2965-_h01/index.html&lang=en&request_locale=en

Question #15
A CICS customer wants to modernize their end-user interface for desktops and mobile platforms (notepads, cell phones, etc.) without having to rewrite their programs for each type of device.
Which software solution can IBM offer to satisfy the requirement?
  1. A
    Mobile containers (Docker) to isolate different mobile devices.
  2. B
    Rational Developer to move the application presentation logic from CICS to Windows.
  3. C
    Mobile OpenStack APIs to connect to applications.
  4. D
    IBM MobileFirst as a single tool with output for multiple end-user devices.

Correct Answer:
D
The capabilities of running heterogeneous environments on a System z platform and the IBM MobileFirst framework enable an organization to fully support a mobile strategy. The mobile environment, representing the System of Engagement, can integrate with existing back-end core transactional services and data on the System z platform, representing the Systems of Records. The products that are available within the MobileFirst framework can deliver the runtime environment, mobile device management, security, analytics, and development of the application and data platforms in a mobile environment on the System z platform.
Figure: End-to-end security checkpoints

MEAP server is protected by a security gateway. The mobile client must authenticate and validate credentials upon encountering the gateway.
Note: CICS stands for "Customer Information Control System." It is a general-purpose transaction processing subsystem for the z/OS operating system. CICS provides services for running an application online, by request, at the same time as many other users are submitting requests to run the same applications, using the same files and programs.
References:
http://www.redbooks.ibm.com/abstracts/tips1162.html?Open

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