Huawei.Train4sure.H13-621.v2016-12-20.by.helen - … · B. support huawei array to other...

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H13-621

Passing Score: 800Time Limit: 4 min



Exam A

QUESTION 1The failure of install multipath is mostly due to compatibility, which components mainly needs to consider compatible when install multipath? (Select three Answers)


A. with OS specific versionB. with HBA cardC. server system hard disk driveD. with iSCSI initiator software

Correct Answer: ABDSection: (none)Explanation

Explanation/Reference:

QUESTION 2How to troubleshooting whether there is impact performance of failure hard disk in storage system (slow)?

A. under CLI check RAID LUN state, whether if it is abnormalB. in storage debug mode, through the command of iostat –x –d 1 to check IO of storage system,

the average service time of some disk (svctm) over a period of time is obviously more than other disk, %util is close to 100%, and other disk are free, can judgethe hard disk performance

C. on host side check LUN IO state under multipath D. check the link state in host side and ISM storage interface

Correct Answer: BSection: (none)Explanation



QUESTION 3About storage network management software, which description is wrong?

A. equipment management can manage storage array deviceB. business management, business flow managementC. topology display, visual display device of the current topology connection statusD. DHA service management, hard disk health data/performance data

Correct Answer: ASection: (none)Explanation


QUESTION 4For backup and disaster, what size of striping depth are recommended the common used?

A. 8KB. 16K-128KC. 64KD. more than 64K

Correct Answer: DSection: (none)Explanation


QUESTION 5Which of the following command can check kernel version information in linux system?



A. shownameB. uname -aC. lsD. linux-release



QUESTION 6In the synchronous remote copy of storage array, if copy link break, will lead to the corresponding business interruption in host.

A. TrueB. False



QUESTION 7When add LUN from S5000T configured asynchronous remote replication, Set the type to " timer wait begin at the same time " Timing length is 720 minutes "Assuming 10:00 start synchronization, Synchronization process takes 100 minutes, so what is the time for the start of the next synchronization?

A. 23:40:00B. 22:00:00C. next day at 11:40D. next day at 10:00




QUESTION 8Multipath install failure in Windows platform in the case of old version do not completely uninstall, which of the following method can solve the problem? (Select twoAnswers)

A. delete the current setup of UltraPath for Windows, restart the host and reinstall.B. in the registry search 'UltraPath' registry key, delete the related key values of UltraPath in registry C. run Setup.exe in installation disk of SUPPORT\TOOLS, install reg.exe registry program D. The PATH variable value in system add "%SystemRoot%\system32; %SystemRoot%" and reinstall

Correct Answer: ABSection: (none)Explanation


QUESTION 9Compared with SCSI protocol in the actual application, which belongs to the advantage of the iSCSI? (Select three Answers)


A. the cost is lowB. make full use of TCP/IP networkC. need parallel transmission cablesD. long transmission distance

Correct Answer: ABDSection: (none)Explanation


QUESTION 10


Arbitration ring topology can extend the maximum number of equipment is ? (not include its node)?

A. 128B. 127C. 126D. infinite

Correct Answer: CSection: (none)Explanation


QUESTION 11The operation process of the incremental of LUN copy in storage array, which is correct?

A. create LUN copy- > create resource pool- > select the source array and the source LUN- >select the target array and the target LUN- > start LUN copyB. create LUN copy- > select the source array and the source LUN- > select the target array and the target LUN- > create resource pool- > start LUN copyC. create resource pool- > create LUN copy- > select the source array and the source LUN- > select the target array and the target LUN- > start LUN copyD. all above statement are wrong



QUESTION 12Create RAID group through SATA, two controllers at the same time can access to RAID groups maycause degradation of the performance, what is the solution?

A. adjust LUN belong to the same controller of the same RAID groupB. adjust LUN writing strategyC. upgrade multipath softwareD. upgrade controller version

Correct Answer: A


Section: (none)Explanation


QUESTION 13Incremental LUN copy about storage array, which of the following are correct? (Select two Answers)


A. support third-party array to third-party arrayB. support huawei array to other manufacturers arrayC. support copy in S5000 and S2600 arrayD. don't support copy in S5000T and S5000 array

Correct Answer: BCSection: (none)Explanation


QUESTION 14when SAN storage array power up, enter into MML mode, sys status check System Running Status: ( normal mode ) normal mode shows power up successful forthe system.If it is not normal mode, can judge power up failure for the system.This judgment method of system startup anomaly is correct.

A. TrueB. False




QUESTION 15After the host start multipath failover, what abnormal phenomena may have?

A. ping-pong effectB. can't eliminate the shadow of diskC. path can't switchD. system will turn blue



QUESTION 16Two reliability for 80% of the components of a serial system, how much reliability of this system?

A. 64%B. 60%C. 80%D. 96%



QUESTION 17In IP SAN network, eliminates the iSCSI storage and iSCSI host business IP network is unable to connect.The main screen from which several aspects? (Select twoAnswers)

A. host iSCSI initiator file configure errorB. iSCSI initiator service did not startC. LAN configuration if it is reasonableD. configuration of IP, gateway and mask are reasonable


Correct Answer: CDSection: (none)Explanation


QUESTION 18For S5000V1R2 old version, appear RAID fault, suggest to check its system have BST function,without this feature, often need to upgrade the version with BST function (V1R5)

A. TrueB. False



QUESTION 19For solaris system, which of the following statement about STMS is true? (Select 3 Answers)

A. solaris 10 system can bring its own STMS package, do not need additional install.B. use the command to enable port of STMS function will ask to restart the hostC. stmsboot is management programs of manage solaris multipath characteristiC. D. install Ultrapath multipath software to support multipath function on the solaris

Correct Answer: ABCSection: (none)Explanation


QUESTION 20what are the main difference between optical fiber topology FC-AL and FC-SW? (Select threeAnswers)


A. topological structure of FC-AL is network, topological structure of of FC-SW is circularB. FC-AL use AL-PA query equipment, FC-SW use Name Server query equipmentC. when there is new equipment join in, FC-AL need to interrupt network, FC-SW don't need to

interrupt the networkD. FC-AL through the hub as connection device, FC-SW optical switches as connected devices

Correct Answer: BCDSection: (none)Explanation


QUESTION 21About storage array resource pool the following error:

A. LUN in resource pool can mapping to host at the same timE. B. LUN in resource pool in use process can't be deletedC. Don't delete the snapshot and directly deleted the source of LUN D. the affiliation of LUN belongs to the affiliation of the source of LUN



QUESTION 22About the iSCSI protocol, which description of the following are right? (Select three Answers)

A. iSCSI is based on IP protocol proposed by Microsoft technical standardsB. iSCSI support users through its access IP SAN storage networkC. iSCSI essence is SCSI commands and data transmission in IP frame formatD. iSCSI protocol based on SCSI and TCP/IP

Correct Answer: BCDSection: (none)


Explanation


QUESTION 23About virtual snapshot storage array configuration, which of the following statement are wrong?(Select 3 Answers)


A. snapshot function can not use the resource of LUNB. can create a snapshot of two LUNC. activate snapshot is the true copy of dataD. snapshot can be used to rollback after stop



QUESTION 24Which are the common commands in the state of check storage side system?(Select 3 Answers)

A. showctrlinfoB. showsysC. showrgD. showraid




QUESTION 25Under the condition of Web application, Email, database application etc small file read and write , SAN performance is mainly determined by the bandwidth.In vedio, survey and draw etc large files continue to read and write condition, SAN performance is mainlydetermined by IOPS.

A. TrueB. False



QUESTION 26which command can view the disk normal identified under solaris system?

A. lspvB. formatC. fdiskD. lsdev



QUESTION 27At the core of performance in storage system, which of the following indicators are: (Select two Answers)

A. IOPSB. volatilityC. bandwidthD. the response time


Correct Answer: ACSection: (none)Explanation


QUESTION 28Main technical or functional of S5000T storage systems to enhance the reliability of the data are cache may fall protection, disk copy, global hot standby disk.

A. TrueB. False



QUESTION 29In FC arbitration ring architecture, when the device is join or exit, do not have effect on other devices of the ring.

A. TrueB. False



QUESTION 30IP SAN network, what are the common faults?(Select 3 Answers)

A. IP can't be connectedB. port restrictionC. VLAN Set is not reasonableD. FC port lack of light power




QUESTION 31Multipath operation process is abnormal in Windows platform, which log files is suggested to main analysis?

A. cfg fileB. UPLOG_x.txtC. InstallationLog.txt fileD. UPLOG.txt



QUESTION 32For system performance test, what kinds of the tools are divided into? (Select three Answers)


A. benchmark test toolsB. business test toolsC. IO test toolsD. data consistency test tools




QUESTION 33High Availability cluster, called HA cluster for short, this kind of cluster is committed to provide high performance services

A. TrueB. False



QUESTION 34The following which do not belong to the methods to improve the reliability of the data stored?

A. component redundancyB. hot standby dis technologyC. cache mirroring technologyD. smart prefetching technique



QUESTION 35About iSCSI protocol implementation of three parts, which describe are right? (Select threeAnswers)

A. initiator Portal: provide connection iscsi storage device and ISCSI packet parsing and the driver of data reading and writing.B. Target Portal: iscsi storage devices, provide data storage servicesC. Portal: by IP address and port (default of iSCSI is TCP3260), through the Portal to provide connectivity and servicesD. initiator Portal: iscsi storage devices, provide data storage services




QUESTION 36When create copy of LUN, if the size of the source LUN is 500G, then the LUN of remote array capacity under the target can't be used for copy of LUN.(Select 2Answers)

A. 300GB. 400GC. 500GD. 600G



QUESTION 37OceanStor storage under the condition of a fan module fault, another fan module automatically improve speed, guarantee temperature can controll under single fanmodule, at this time also need to replace the fault fan in timE.

A. TrueB. False



QUESTION 38iSCSI of IP SAN storage array provide security function of CHAP authentication to prevent unauthorized access; IPsec prevent insert, modify, and delete, and


prevent eavesdrop, ensure the privacy.

A. TrueB. False



QUESTION 39Which of the following components do not belong to FC SAN network hardware?

A. HBA cardB. switchesC. storage deviceD. server mainboard



QUESTION 40Through which two ways can detect the hard disk bad way in OceanStor storage system? (Select two Answers)

A. read/write failure automatic analysisB. hard disk medium active scanC. power testD. business data flow anomaly detection




QUESTION 41Remote copy link between array according to transport protocol is divided into which several? (Select three Answers)

A. parallel linkB. cross linkC. FC linkD. iSCSI link



QUESTION 42check host already registered iSCSI target and the command is: iscsiadm -m node on Linux platform


A. TrueB. False



QUESTION 43About iozone and iometer, which are true? (Select two Answers)


A. iometer support graphical configuration interfaceB. iometer is mainly used to test the performance of file systemC. iozone can only use the command line configure interfaceD. iozone is mainly used to test the performance of block device



QUESTION 44Hyper replication technology of Storage array is usually based on block level of replication.

A. TrueB. False



QUESTION 45Remote replication between storage array is based on the copy file level

A. TrueB. False



QUESTION 46About snapshot, LUN copy and remote replication on array, which of the following are true ? (Select 2 Answers)


A. A. Can do LUN snapshot and replication on a arrayB. a remote copy of the source LUN can be used as another remote replication target LUNC. a remote copy of the source LUN can be used as another one copy of the source LUN D. can't do a snapshot and replication on a array



QUESTION 47Two criteria based on SMI: CIM (Common Information Model) and WBEM (Web Based Enterprise Management)

A. TrueB. False



QUESTION 48The SAN network topology, which is the relatively high reliability?

A. directly connected networkB. double exchange networkC. single exchange networkD. multipath network




QUESTION 49The maximum single size of Host FC-HBA card request do not exceed 4096M

A. TrueB. False



QUESTION 50Below the write Cache strategy description about the array is not the right are:


A. write-through cache suggest mirror mode, in order to improve data reliabilityB. Write Back cache can improve SAN performanceC. Write Back cache no matter whether to adopt the mirror, random write performance almost no differenceD. write-through cache, bottle neck area of SAN performance often on the disk



QUESTION 51What is the command to check WWN number of FC-HBA card in AIX system?

A. lscfg -pvl fcs0


B. hbaC. lsdev -Cc adapter |grep fcsD. hbainfo



QUESTION 52Which of the following HostAgent components need to restart the host after the installation is complete?

A. HyperManager serverB. InbandAgentC. ConsistentAgentD. HyperManager client



QUESTION 53What the common timing index in measure a system reliability? (Select two Answers)

A. reliabilityB. efficientC. the average of failure timeD. the average of fault-free time




QUESTION 54Configure LUN copy in S5000, the capacity of target LUN in LUN copy must be greater than or equal to the source LUN capacity.

A. TrueB. False



QUESTION 55The most important three part of SAN network in technically: device interfaces (E. g, SCSI, fiber channel and ESCON, etC. ), connection device (switches, gateway,router and Hub, etC. ) and communication control protocol (E. g iSCSI and FC, etC. ) the three components plus additional storage devices and servers,constructed SAN system from the component, the SAN can be divided into host,HBA, switches, storage devices of the two is not match.

A. TrueB. False



QUESTION 56LUN copy in storage array do not support copy a source of LUN to two goal LUN at the same time

A. TrueB. False




QUESTION 57ISCSI is based on TCP/IP protocol, the default service port is?

A. 3260B. 8088C. 8443D. 3206



QUESTION 58Active-Active work mode: normally called double living mode, two controllers are in activation state, parallel processing the I/O requests from the application server,once a controller failure or offline, another controller will take over his work in time, and shall not affect its current task.

A. TrueB. False



QUESTION 59About the storage array, which LUN copy function is true? (Select two Answers)

A. when create LUN copy , you can use one virtual snapshot of LUN as the source of LUNB. when create increment LUN copy, you can use external array as the source of LUNC. when create full capacity of LUN copy, the source of LUN and target of LUN can't be located in

the external array at the same timeD. multiple LUN copy can share same target of LUN




QUESTION 60For AA model storage controller, STMS in solaris OS can realize Failback function.

A. TrueB. False



QUESTION 61The method of check initiator node name under solaris system:

A. cat /etc/iscsi/initiatornamE. iscsiB. iscsiadm -m nodeC. iscsiadm list initiator-nodeD. cfgadm



QUESTION 62HyperManager function: HyperManager components are the "brain" of HostAgent software, scheduling, coordination and management of other components,cooperate with the storage system, the configuration on the host side provide all kinds of disaster backup can divided into HyperManager Console andHyperManager ServE. The following each component description, which are correct?



A. HyperManager is the "brain" in application scheme, cooperate with storage system, provide disaster scheme on the host sideB. ConsistentAgent with HyperManager software, the data in cache in host refresh to the storage system, ensure the consistency of the dataC. InbandAgent business links between host and storage systems, transport manage command HyperManager, can use InbandAgent to reach the management of

the storage systeminstall the host map command device of HyperManager client can realize the management of the array



QUESTION 63What are the common failures according to the component object classification in FC SAN network? (Select three Answers)

A. FC port mode don't matchB. FC port rate don't match C. SFP luminous power is insufficient or abnormalD. host IP address conflict



QUESTION 64With the same specification and quantity of the hard disk in RAID group, In the same business speaking, reading and writing.Random write performance of Raid10are the same as Raid5

A. True


B. False



QUESTION 65For S5000 and S2600 system, DB is configuration information in storage system, intraday record in the safe system, when power up, controller reads the DB. Ifthere is a DB does not agree with other DB, storage will enter in safe mode, equipment can't normal use, need to synchronize the DB information.

A. TrueB. False



QUESTION 66Because SAS is serial SCSI, therefore its transmission rate is usually lower than parallel SCSI.

A. TrueB. False



QUESTION 67In read SCSI, the process of interaction of initiator and target is less than the writing process of interaction of initiator and target.Mainly in the process of writing,need to distributed cachE.


A. TrueB. False



QUESTION 68Under the network environment of FC SAN, LUN lost in host cause business interruption, this fault scenario, what are the main reason? (Select three Answers)


A. RAID LUN resource invalidB. iSCSI host port physical link failureC. switch port exceptions (power down/restart)D. HBA card failure

Correct Answer: ACDSection: (none)Explanation


QUESTION 69How to check whether the hard disk physical condition normal in S5000 system?

A. showdisk -pB. showsysC. showrgD. showlun




QUESTION 70which is the common way of redundant host side as the following? (Select three Answers)

A. controller cache mirroringB. database double machine failoverC. OS system disk imageD. network port binding

Correct Answer: BCDSection: (none)Explanation


QUESTION 71In storage array, what are the common faults in snapshot scheme? (Select three Answers)

A. activate snapshots failureB. rollback snapshots failureC. virtual snapshot automatically stopD. delete snapshots failure



QUESTION 72Which level of RAID can adopt odd-even check as data redundancy protection ?(Select 2 Answers)


A. RAID1B. RAID2C. RAID 3D. RAID 5




Huawei.Train4sure.H13-621.v2016-12-20.by.helen - … · B. support huawei array to other...

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