H31-321-ENU Questions And Answers


Exam Name: Huawei Certified Network Professional-MSTP Transmission

Updated: 2022-05-16

Q & A: 138

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Question No : 1

Which of the following statement about the gold business is true? (Multiple choice)
A. Compared with the diamond business, gold business bandwidth utilization is higher
B. The working resources of the TE link can be used
C. gold business is also called re-routing business
D. Gold business re-routing time is independent of device type
Answer: AB

Question No : 2

In ECC communication model, the media access layer is responsible for the establishment and maintenance of MAC connection between adjacent network elements, where the MAC refers to the physical MAC address of the network element.
A. True
B. False
Answer: B

Question No : 3

About clean dust screen, which is correct? (Multiple choice)
A. General dust screen can be directly pulled out
B. Paste the sponge on the dust shield can not be torn directly after the water rinse
C. After the cleaning process is complete, reattach the sponge to the dust shield
D. Cleaning the dust screen is usually 6 months at a time.
Answer: AC

Question No : 4

For the extended SSM protocol, clock ID setting principles. Which of the following statement is true? (Multiple choice)
A. All external BITSs are assigned a clock ID
B. All internal clock sources with external BITS nodes are assigned a clock ID
C. All the nodes internal clock sources that enter into another ring network from the chain or the ring network are assigned a clock ID
D. All the nodes that enter into another ring network from the chain or the ring network, If there is a ring line clock source in the clock trace level, the line clock source of the incoming ring should be assigned a clock ID, for example, the clock ID is set to 16.
Answer: ABC

Question No : 5

Before touching equipment, boards, integrated circuit IC chips, etc., in order to prevent human body static damage sensitive components, must wear anti-static wrist, while insert the other end of the anti-static wrist in the device subrack anti-static jack.
A. True
B. False
Answer: A

Question No : 6

Which of the following alarms will cause the switching of SNCP business?
Answer: B

Question No : 7

TU pointer adjustment is converted from the AU pointer adjustment.
A. True
B. False
Answer: A

Question No : 8

When SDH equipment for single station test, you need to check the hardware of single station: including cabinet, sub-rack installation check, power terminal resistance measurement, cable laying normative check, board visual inspection, and part board of dial code jumping Line inspection.
A. True
B. False
Answer: A

Question No : 9

Which of the following belongs to the influence and harm of discrete business? (Multiple choice)
A. The configuration of the path will lead to configuration failure, prompt "slot conflict"
B. The query path resource is not complete on the network management
C. can not manage based on path, including fault location, diagnosis and maintenance, etc
D. Timeslot assignment graph display is not accurate
E. Search path will generate conflict path
Answer: ABCD

Question No : 10

SNCP ring and SNCP ring intersection networking, any one intersection point network elements failure or any two fiber-broken, the business can be protected.
A. True
B. False
Answer: B

Question No : 11

When dual BITS is configured, if two clock sources have the same level, then what will happen after clock protection switching?
A. Network element can not track the clock
B. Clock protection switching occurs frequently
C. Network element reports alarm of clock signal loss
D. The generation of pseudo-synchronization phenomenon
Answer: D

Question No : 12

Which of the following are possible reasons of TPS protection switching failure? (Multiple choice)
A. Protection group parameter configuration is wrong
B. Protect the board from failure
C. Intersection board failure
D. Main control board failure
Answer: ABC

Question No : 13

NG-SDH equipment, if there is no alarm on the current port, you can set the alarm inversion on the port. The mode is manual recovery mode.
A. True
B. False
Answer: A

Question No : 14

For NG-SDH device, which of the following belongs to the causes of DOWN_E1_AIS alarms? (Multiple choice)
A. The inner loopback is set on the opposite terminal E1 port.
B. Home Terminal has high-level alarms R_LOS, R_LOC, R_LOF, MS_AIS and so on.
C. The UP_E1_AIS and T_ALOS alarms exist on the opposite terminal branch board.
D. Home Terminal branch board failure.
E. Home Terminal cross clock board failure.
Answer: BCDE

Question No : 15

The following statement about error code, which is correct? (Multiple choice)
A. ES (Errored Second): When one second time occur one or more than one errored block, it is called ES.
B. SES (Severe Error Block Second): in one second time contain at least 30% errored block or at least occur one critical disturbance period (SDP event)
C. CSES (continuous severe error block second): that the continuous X SES, X is between 2 to 10.
D. BBE (background block error): refers to the deduction of unavailable seconds and SES period after all the error blocks left by the error block.
Answer: ABD
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03 Jan, 2019

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Augustine Tribue

20 Oct, 2018

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28 Sep, 2018

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01 Sep, 2018

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30 Aug, 2018

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25 Aug, 2018

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22 Aug, 2018

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Isaiah Savko

08 Aug, 2018

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04 Aug, 2018

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25 Jul, 2018

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21 Jul, 2018

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