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Huawei
HCSA-Field-Transmission
H35-260
HCSA-Field-Transmission & PTN V1.0 Questions and Answers

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Questions # 71:

OptiX OSN 6800 supports centralized crossover and distributed crossover. When two kinds of crossovers exist, the system prefers to use centralized crossover

Options:

True

False

Answer

Questions # 72:

A certain wavelength division system is configured with the 1st to 20th waves, using the NS4 single board, and testing the M40 output port with a spectrum analyzer during commissioning. It is found that the optical power of the 20th wave

is significantly lower than the other 19th waves. What is the possible reason? ?

Options:

The luminescence of the 20th wave on the LU WDM side is too small

20th wave LU center wavelength shift

The insertion loss of the 20th channel corresponding to M40 is too large

The RX error of the 20th wave of NS4 added 5DB fixed light attenuation

Answer

A, B, C

Questions # 73:

Create an ETH private line service in the PTN network, and connect an Ethernet tester to the UNI port for RFC2544 testing. The instrument shows that the current port has only sending traffic

and no receiving traffic. What are the possible reasons?

Options:

The VLAN on the Ethernet tester is inconsistent with the service WLAN

The remote UNI port of the test service on the PTN is not configured with inner loopback

The instrument optical module does not match the equipment optical module

The PTN side limits the service rate

Answer

A, B, C

Questions # 74:

In Huawei's PTN-LTE solution, which of the following FRR technologies have been deployed?

Options:

LDP FRR

VPN FRR

IP/VPN FRR

TE FRR

Answer

B, C

Explanation

QUESTION NO: 124

The base station is deployed, the Tunnel and PW tests are normal, and the base station management is normal, but the base station cannot access the core network normally. What is the reason for the impossibility?A. The IP addresses of the PTN equipment interconnection interfaces are not in the same network segmentB. User packets carry VLAN, but the port attribute is AccessC. On the L2L3PTN node, the L3VE termination VLAN segment does not include the base station's VLAN segmentD. There is no route to the address managed by the SGW on L2L3Answer: A

Questions # 75:

During the troubleshooting process, if you need to loopback the protected services carried by the NG WDM device, which of the following operations need to be performed first when performing the loopback

operation?

Options:

Switch to the protection channel

Lock on the current channel

Test to see if the ring is normal

Verify that the APS protocol is enabled

Answer

Questions # 76:

When any of the following situations occurs, the ODUk_PM_DEG alarm will be reported on the NMS?

Options:

When the number of errors in the PM segment of the ODU layer exceeds the limit, the number of errors exceeds the specified error threshold.

When the PM segment of the ODU layer is degraded by bit errors, and the number of error codes exceeds the specified bit error degradation threshold

The ODUkTCMng signal is degraded, and the number of bit errors exceeds the specified error threshold.

The error error of the ODUkTCMn layer exceeds the limit, and the number of error errors exceeds the specified error degradation threshold.

Answer

Questions # 77:

The U2000 network management supports a variety of external interfaces. Which of the following interfaces can be used when connecting with the network management equipment of other manufacturers?

Options:

CORBA

MML

TL1

Answer

Questions # 78:

The MPLS label has four identification fields, Lable, EXP, S and TTL, with a total of 4 bytes, of which Lable occupies 20 bits. The label value 0-15 is reserved for special purposes,

which indicates that the inner payload carried is MPLS-OAM packet. , the label value is which of the following?

Options:

Answer

Questions # 79:

Which of the following 7900 single-board software function descriptions are correct?

Options:

The software management module in the board is used to manage signaling protocols such as OSPF/1588V2

The performance and alarm module is mainly used to check the alarm and performance of the single board, and report it to the main control board

QoS, PwE3, L3VPN and other services are implemented by the service management module

The basic framework of the single board provides basic system support, including memory management, process/thread management

Answer

B, C, D

Questions # 80:

Regarding PW labels and tunnel labels, which of the following statements are correct?

Options:

PW labels are mainly used to distinguish PWs, but for CES services, because CES services do not support aggregation, there is no need to use PW labels

Tunnel label is mainly used for transmission in the tunnel, it mainly uses the tunnel label to establish MPLS tunnel

They are all based on MPLs tags

PW signing only needs negotiation between the source and sink network elements, and has nothing to do with the intermediate

tansit network elements

Answer

B, C, D

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