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HCNP-Storage-CUSN(Constructing Unifying Storage Network) Questions and Answers

Question 1

Two reliability of 80% device formed a parallel system, what is the reliability of the system?

Options:

A.

64%

B.

60%

C.

80%

D.

96%

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Question 2

In FC SAN system, card module of host HBA is responsible for distributing the IO to the storage, what are the four indicators need to focus on?

Options:

A.

concurrency; IO size; Bandwidth; IOPS

B.

concurrency; IO size; Bandwidth; The response time

C.

concurrency; IO size; Queue depth; IOPS

D.

The amount of data; IO size; Bandwidth; IOPS

Question 3

SAN working conditions can seriously influence the reliability of SAN , as the most vulnerable parts of SAN system, hard disk is easy to failure under the condition of high temperature, high humidity and dust and electrostatiC. Hard disk frequently failure will directly affect the reliability of system.

Options:

A.

True

B.

False

Question 4

About fault diagnosis on the capacity of hard disk box, which are wrong?

Options:

A.

S5000V1R5 and its subsequent version can realize the back-end cascade self-adaption, therefore need to power up on the storage system again, can adjust the speed of cascade links.

B.

If appear speed rate of dial-up are inconformity between expansion box and host box, can through the following method to adjust:

1, login MML through fc gps to check the original hard disk box rate in loop

2, dial switch in new box and loop line are in agreement

3, power up and down on expansion box, check whether the capacity of hard disk box is normal access.

C.

After expansion failure, need to check the expansion network are correct connected, and then check HUB and cable on expansion link are normal

D.

The reason of expansion failure have nothing to do with control box system and the order of power up on new extension box.So when power up on system, can automatically adjust the order of cascade link between the controller box and hard disk box

Question 5

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

Options:

A.

RAID1

B.

RAID2

C.

RAID 3

D.

RAID 5

Question 6

Under Linux platform, the host message information is important log of the host-side fault diagnosis, among the logs collected by collecting tools HostInfoTools - 1.2 sh, which file is the message log?

Options:

A.

PROC. txt

B.

OS_TYPE_INFO.txt

C.

LOG_INFO.txt

D.

ARRAY_INFO.txt

Question 7

In S5000T disks copy technology of the storage system, which two key parts are included? (Select two Answers)

Options:

A.

failure prediction

B.

data copy

C.

disk offline

D.

online alarm

Question 8

Which of the following description of network product warning issued, obtain and process? (Select 3 Answers)

Options:

A.

warning information of product release in huawei's website - > service announcement - > warning notice

B.

product warning need engineers active learning, for the key issues that need to be tracking management, according to advice of early warning, make active treatment

C.

according to the emergency degree of product early warning, arrange rectification or the plan of upgrade, guard actively to the key problem

D.

early warning information need 400 hotline engineers to pay more attention, office engineers can don't pay any attention

Question 9

When Snapshot rolled back, the source LUN must map to the host to use it.

Options:

A.

True

B.

False

Question 10

For asynchronous remote replication of storage array, which of the following limited number of the added subordinate LUN is correct?

Options:

A.

can add at most 1 subordinate LUN

B.

can add at most 2 subordinate LUN

C.

can add at most 4 subordinate LUN

D.

can add any subordinate LUN

Question 11

Under Solaris system, when configuration multipath, what command need to activate and boot the STMS function in all port?

Options:

A.

stmsboot -e

B.

stmsboot -u

C.

stmsboot -d

D.

stmsboot -L

Question 12

When 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?

Options:

A.

23:40:00

B.

22:00:00

C.

next day at 11:40

D.

next day at 10:00

Question 13

When HyperManager manage remote replication strategy, it can only manage synchronous remote replication.

Options:

A.

True

B.

False

Question 14

Among database, Email, WEB applications and other critical business applications, which type of hard disk is advised to choose? (Select 2 Answers)

Options:

A.

IDE hard disk

B.

SATA hard disk

C.

FC hard drive

D.

SSD hard drive

Question 15

Which of the following statements of virtual snapshot of storage array is correct?

Options:

A.

the snapshot LUN is virtual LUN

B.

snapshot rollback once cannot be used again

C.

the snapshot is effective after creation

D.

snapshot support across the array

Question 16

In SAN storage network deployment, which of the following opinions of optical switches zone are correct? (Select 3 Answers)

Options:

A.

the recommended way is that a zone only has two ports, one belongs to the starter, the other belongs to the target

B.

a port can belong to multiple zones

C.

zone's type can be divided into hard zone and soft zone

D.

under the condition of optical switch cascade, the same zone port cannot be distributed on the two switches

Question 17

Which of the following statement about the IO load characteristics is wrong?

Options:

A.

IOPS continuously increase with the increase of data blocks

B.

the bandwidth value increases with the increase of data blocks, finally the trend of increase gradually slow, until leveled off

C.

IO order is stronger, the performance is better

D.

the queue depth, the load pressure on storage is greater

Question 18

Add target under the solaris system, the command of IP address: iscsiadm add discovery-address

Options:

A.

True

B.

False

Question 19

About storage network management software, which description is wrong?

Options:

A.

equipment management can manage storage array device

B.

business management, business flow management

C.

topology display, visual display device of the current topology connection status

D.

DHA service management, hard disk health data/performance data

Question 20

Under HP-UX system, what command is used to check FC-HBA card WWN?

Options:

A.

fcinfo hba-port

B.

lscfg -pvl fcs0

C.

fcmsutil /dev/fcd0

D.

hbainfo

Question 21

For snapshot , LUN copy and remote replication of storage array, which of the following statement is true? (Select 3 Answers)

Options:

A.

add resources LUN in resource pool, controller A and B both added and equal size, which is the best

B.

create LUN copy if confusing the source LUN and target LUN may result in data loss

C.

create remote copy if confusing the source LUN and target LUN may lead to the data unavailable

D.

if the space of the resource pools is insufficient, system will automatically use the residual capacity of safe space as a resource pool space

Question 22

Which of the following options does not belong to the component of SAS domain?

Options:

A.

SAS Expander

B.

SAS connection cable

C.

the server

D.

SAS terminal equipment

Question 23

Which component is responsible for connecting to the array to distribute in-band command in HostAgent?

Options:

A.

HyperManager server

B.

InbandAgent

C.

ConsistentAgent

D.

HyperManager client

Question 24

Which of the following description of the FC protocol layer is wrong?

Options:

A.

FC-0 is the physical layer to complete data transceiver

B.

FC-1 is responsible for encoding and decoding

C.

FC-2 is the public service

D.

FC-4 is the application layer

Question 25

In creating remote copy, if the size of the source LUN is 500G, then in remote array, which of the following target LUN's capacity cannot be used for remote replication? (Select 3 Answers)

Options:

A.

300G

B.

400G

C.

500G

D.

600G

Question 26

In the process of storage array implementing incremental LUN copy, the host can't read and write the target LUN.

Options:

A.

True

B.

False

Question 27

The maximum rate of current commercial FC interface

Options:

A.

1Gbps

B.

2Gbps

C.

4Gbps

D.

8Gbps

Question 28

In 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 two Answers)

Options:

A.

host iSCSI initiator file configure error

B.

iSCSI initiator service did not start

C.

LAN configuration if it is reasonable

D.

configuration of IP, gateway and mask are reasonable

Question 29

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

Options:

A.

when create LUN copy , you can use one virtual snapshot of LUN as the source of LUN

B.

when create increment LUN copy, you can use external array as the source of LUN

C.

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 time

D.

multiple LUN copy can share same target of LUN

Question 30

After the failure of login storage system by ISM or SSH, the usual diagnosis way is: confirm the controller indicator light is normal, check management link physical state firstly, then check the IP address and management port, check the ISM version or SSH configuration, finally check whether ISM and ISM agent service can normally boot or not.

Options:

A.

True

B.

False

Question 31

What are the basic principles to recover RAID / LUN fault?(Select 2 Answers)

Options:

A.

Revive the first failure hard disk,then reconstruct to restore the data on the later failure hard disk

B.

Open the controller software BST function before Reconstruction,Start hard disk bad sector tagging function,it can reduce the impact of reconstruction for the new bad sector.

C.

No version of BST function needs to upgrade the storage system software, upgrade to the version of the function with BST

D.

No matter how the physical state of the hard disk, it can restore the logic state in the MML

Question 32

what are the main difference between optical fiber topology FC-AL and FC-SW? (Select three

Answers)

Options:

A.

topological structure of FC-AL is network, topological structure of of FC-SW is circular

B.

FC-AL use AL-PA query equipment, FC-SW use Name Server query equipment

C.

when there is new equipment join in, FC-AL need to interrupt network, FC-SW don't need to

interrupt the network

D.

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

Question 33

Main functions of the multipath software, which are include?

Options:

A.

load balancing

B.

Failover and Failback

C.

data encryption

D.

shielding redundant disk

Question 34

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

Options:

A.

showname

B.

uname -a

C.

ls

D.

linux-release

Question 35

Disk Lable is always at the beginning of disk, record disk information and data storage format , include the type of Label, the size of disk, and disk partition information.

Options:

A.

True

B.

False

Question 36

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

Options:

A.

reliability

B.

efficient

C.

the average of failure time

D.

the average of fault-free time

Question 37

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

Options:

A.

True

B.

False

Question 38

SAN storage system fault diagnosis, through ISM log can't judge fault, which log file can through

the further analysis system ? (Select three Answers)

Options:

A.

in Debug_information directory, the most important information is message and SES_log

B.

log_reset.txt record system restart times and reasons

C.

log_debug.txt record system kernel log information

D.

log_restart.txt record system restart times and reasons

Question 39

HP-UX does not need to be installed UltraPath multipath software additionally, which can be realized the function of multipath through the own pv-link of the system.

Options:

A.

True

B.

False

Question 40

Which of the following descriptions of finding equipment by ISM is wrong?

Options:

A.

designated IP address discovery, which shows finding equipment according to the specified IP address of the equipment management network port

B.

same subnet discovery, which shows that the search range is the user's specify IP address subnet

C.

designated IP addresses discovery, which shows finding equipment according to the specified IP addresses of the equipment management network port

D.

the specified mask discovery, which shows that search range is the user's defined the address network segment of specified mask

Question 41

On which component UltraPath multipath software is deployed in the network?

Options:

A.

OS server

B.

switch

C.

storage arrays

D.

storage virtualization platform

Question 42

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

Options:

A.

lspv

B.

format

C.

fdisk

D.

lsdev

Question 43

IO from host side to disk, experience path in SAN network as follows:

Options:

A.

host - > SAN network - > storage system controller - > disk storage system

B.

disk storage system - > storage system controller - > SAN network - > host

C.

disk storage system - > SAN network - > storage system controller - > host

D.

host - > storage system controller - > SAN network - > disk storage system

Question 44

Writethrough strategy of S5000T system is first write to the cache before write each IO request, mean write successful after written to disk.write back strategy is write each IO request to the cache mean write successful, so the performance of write back strategy is better than writethrough strategy.But write back strategy, exists the risk of loss cache data in system abormal power down.

Options:

A.

True

B.

False

Exam Detail
Vendor: Huawei
Certification: Huawei Other Certification
Exam Code: H13-621
Exam Name: HCNP-Storage-CUSN(Constructing Unifying Storage Network)
Last Update: Jan 15, 2025
H13-621 Question Answers
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Total 294 questions
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