IBM C9030-644 Exam Practice Questions (P. 5)
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Question #21
A customer has an IBM z13 and is using z/OS for XML file handling. The customer needs a solution which allows compression of large XML files in DEFLATE file format for cross platform data exchange with third parties.
What should be recommended to use as a proof of concept?
What should be recommended to use as a proof of concept?
- A10GbE RoCE Express
- BCompression Coprocessor on IBM z Systems processor chip
- CFlash Express
- DzEDC Express
Correct Answer:
D
zEDC is a compression acceleration capability, that enables you to do hardware-based data compression and decompression. It is designed for high- performance, low-latency compression, to reduce processor use, optimize the performance of compression-related tasks, improve disk usage, and optimize cross- platform exchange of data.
The compression format generated and used by zEDC Express is the Request for Comments (RFC) 1951 DEFLATE format, an industry standard that compresses data using the Lempel-Ziv 1977 (LZ77) and Huffman coding algorithms.
Incorrect Answers:
A: In 2013 the IBM zEC12 (zBC12) introduced the 10GbE RoCE Express feature. 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.
References: Reduce Storage Occupancy and Increase Operations Efficiency with IBM zEnterprise Data Compression (February 2015), page 2
D
zEDC is a compression acceleration capability, that enables you to do hardware-based data compression and decompression. It is designed for high- performance, low-latency compression, to reduce processor use, optimize the performance of compression-related tasks, improve disk usage, and optimize cross- platform exchange of data.
The compression format generated and used by zEDC Express is the Request for Comments (RFC) 1951 DEFLATE format, an industry standard that compresses data using the Lempel-Ziv 1977 (LZ77) and Huffman coding algorithms.
Incorrect Answers:
A: In 2013 the IBM zEC12 (zBC12) introduced the 10GbE RoCE Express feature. 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.
References: Reduce Storage Occupancy and Increase Operations Efficiency with IBM zEnterprise Data Compression (February 2015), page 2
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Question #22
A customer has a z13 server. They plan to use Server Time Protocol (STP) for accessing an external time source (UTC).
Which of the following techniques can be used to get the time information in this scenario?
Which of the following techniques can be used to get the time information in this scenario?
- AConfiguration of a Network Time Protocol (NTP) client on the HMC which accesses an external NTO server.
- BUse of an External Time Reference (9037-002) in an STP mixed Coordinated Timing Network.
- CSE dial out to an external time reference.
- DEdit PR/SM to connect oscillator cards to a tlsdate server.
Correct Answer:
B
Network Time Protocol (NTP) client support
The external time source (ETS) function of STP can provide accurate time relative to an external time standard for data processing applications. The ETS function is only available when an STP-only CTN is configured. The external time source can be configured by dialing out from the HMC to an available time service such as Automated Computer Time Service (ACTS). Dialing out provides time accuracy for the z Systems timing network only. This function has been generally available since January 31, 2007 when STP became generally available.
An alternative method to obtain accurate time is from an NTP server. Simple Network Time Protocol (SNTP) client support is added to the Server Time Protocol code to interface with NTP servers. NTP client support can provide the same time across heterogeneous platforms in an enterprise with a time accuracy of 100 milliseconds.
References:
https://www-03.ibm.com/systems/z/advantages/pso/stp/ntp.html
B
Network Time Protocol (NTP) client support
The external time source (ETS) function of STP can provide accurate time relative to an external time standard for data processing applications. The ETS function is only available when an STP-only CTN is configured. The external time source can be configured by dialing out from the HMC to an available time service such as Automated Computer Time Service (ACTS). Dialing out provides time accuracy for the z Systems timing network only. This function has been generally available since January 31, 2007 when STP became generally available.
An alternative method to obtain accurate time is from an NTP server. Simple Network Time Protocol (SNTP) client support is added to the Server Time Protocol code to interface with NTP servers. NTP client support can provide the same time across heterogeneous platforms in an enterprise with a time accuracy of 100 milliseconds.
References:
https://www-03.ibm.com/systems/z/advantages/pso/stp/ntp.html
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Question #23
A customer currently has a zEC12 with one book and is upgrading to a z13.
Left unchanged, which of the following configuration options will require them to purchase a second z13 CPC drawer?
Left unchanged, which of the following configuration options will require them to purchase a second z13 CPC drawer?
- ASix System Assist Processors
- BTwo carry forward I/O Drawers and 2 HCA3-O fanouts
- CTen HCA3-O 12X IFB Links
- DTwenty total processors (combination of PCs, zIIPs and ICFs)
Correct Answer:
D
Incorrect Answers:
Not B: When upgrading a zEC12 or a z196 to a z13 server, up to two I/O drawers are also supported as carry forward.
D
Incorrect Answers:
Not B: When upgrading a zEC12 or a z196 to a z13 server, up to two I/O drawers are also supported as carry forward.
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Question #24
A customer is currently running several LPARs on a zEC12 with one dominant production LPAR, which consumes most of the CPU capacity. During the Technical
Delivery Assessment (TDA), the customer mentions the performance of this LPAR is critical to a successful implementation.
What data should the Client Technical Specialist ensure that the customer collect on the zEC12 and the new z13 to verify the performance expectations have been met?
Delivery Assessment (TDA), the customer mentions the performance of this LPAR is critical to a successful implementation.
What data should the Client Technical Specialist ensure that the customer collect on the zEC12 and the new z13 to verify the performance expectations have been met?
- ARMF CPU Reports for a peak week.
- BThe total numbers of LPARs configured with the level(s) of z/OS that are active for each LPAR for both the zEC12 and the z13.
- CRMF CPU and Workload Reports for a peak week.
- DCPU MF Counters capturing the cache and memory hierarchy information for the zEC12 and z13.
Correct Answer:
C
When RMF is running in a Processor Resource/Systems Manager (PR/SM) environment in LPAR mode, the Partition Data Report section of the CPU Activity report provides data about all configured partitions active at the end of the reporting interval, independent of the operating system running in each partition.
References:
https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.1.0/com.ibm.zos.v2r1.erbb500/partd.htm
C
When RMF is running in a Processor Resource/Systems Manager (PR/SM) environment in LPAR mode, the Partition Data Report section of the CPU Activity report provides data about all configured partitions active at the end of the reporting interval, independent of the operating system running in each partition.
References:
https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.1.0/com.ibm.zos.v2r1.erbb500/partd.htm
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Question #25
The design of the z13 Systems processor unit (PU) chip has been enhanced over the zEC12.
Which of the following characterizes the improvement?
Which of the following characterizes the improvement?
- AFaster processor cycle time on z13 (5.5 GHz instead of 5.0 GHz on zEC12).
- BImproved cryptographic and compression engine shared over all cores.
- CLarger cache level sizes on z13 compared to zEC12.
- DUp to six active cores per chip on z13 compared to four active cores on zEC12.
Correct Answer:
C
Contributing to the additional capacity on the z13 and z13s are numerous improvements in processor chip design, including new instructions, multithreading, and redesigned and larger caches.
Z13 processor:
* L1 cache
96 KB I-L1
128 KB D-L1 per core
* L2 cache
2 MB I-L2
2 MB D-L2 per core
L3 cache 64 MB shared -
zEC12 processor:
L1 cache 64+96 KB/core -
L2 cache 1+1 MB/core -
L3 cache 48 MB/chip -
References:
https://en.wikipedia.org/wiki/IBM_zEC12_(microprocessor)
https://en.wikipedia.org/wiki/IBM_z13_(microprocessor)
C
Contributing to the additional capacity on the z13 and z13s are numerous improvements in processor chip design, including new instructions, multithreading, and redesigned and larger caches.
Z13 processor:
* L1 cache
96 KB I-L1
128 KB D-L1 per core
* L2 cache
2 MB I-L2
2 MB D-L2 per core
L3 cache 64 MB shared -
zEC12 processor:
L1 cache 64+96 KB/core -
L2 cache 1+1 MB/core -
L3 cache 48 MB/chip -
References:
https://en.wikipedia.org/wiki/IBM_zEC12_(microprocessor)
https://en.wikipedia.org/wiki/IBM_z13_(microprocessor)
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