C9030-644: IBM z Systems Technical Support V7

Which scenario would provide the best opportunity to justify the RoCE Express feature?

Shared memory communication from a distributed Linux application to an MQ Linux guest on a z Systems server.
A z/OS WebSphere application that communicates to DB2 running on a z/OS LPAR on a separate z Systems server.
CICS to CICS communication between z/OS LPARs within the same z Systems server.
A Linux system running MQ on a z Systems server communicating to a z/OS MQ within the same server.

Correct answer: A

Explanation:

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

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

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 customer’s 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?

Integrated Coupling Adapter (ICA) cards can be installed in the zEC12 servers to improve performance.
The number of available LPARs on z13s may not be sufficient to meet all of the customer’s requirements.
The N10 may not provide sufficient InfiniBand slots for coupling links to the other systems in the customer’s sysplex.
The memory requirement of the configuration will force the N20 model type to be configured.

Correct answer: B

Explanation:

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

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

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?

Mobile containers (Docker) to isolate different mobile devices.
Rational Developer to move the application presentation logic from CICS to Windows.
Mobile OpenStack APIs to connect to applications.
IBM MobileFirst as a single tool with output for multiple end-user devices.

Correct answer: D

Explanation:

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

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

Vendor:	IBM
Exam Code:	C9030-644
Exam Name:	IBM z Systems Technical Support V7
Date:	Feb 15, 2018
File Size:	430 KB

Download IBM z Systems Technical Support V7.C9030-644.PracticeTest.2018-02-15.38q.tqb

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