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Questions # 11:

In the PTN core routing table, what is the routing distance value, which means it is directly connected to the current network element?

Options:
A.

0

B.

1

C.

3

D.

14

Expert Solution
Questions # 12:

Which of the following items belong to the debugging work of the playback system?

Options:
A.

Commissioning the protection function

B.

Commissioning feature function

C.

Debugging Errors

D.

Optical power commissioning

E.

Cabinet Installation

Expert Solution
Questions # 13:

The signal-to-noise ratio is an important factor that limits the DWDM system, and the source of the noise is which of the following single boards are widely used in the system?

Options:
A.

Optical Transponder Board

B.

Combine/demultiplex board

C.

Raman magnifying board

D.

EDFA slab

Expert Solution
Questions # 14:

Which of the following statements about ESD protection measures is false?

Options:
A.

All personnel entering the computer room should wear anti-static shoes, anti-static clothing, etc.

B.

Use anti-static tools, such as: anti-static wrists, anti-static tweezers, pullers, etc.

C.

Controlling humidity has little effect on reducing static electricity

D.

All conductors in the computer room must be grounded reliably, including computer terminals and other equipment, and an anti-static workbench must be set up

E.

Static sources such as non-anti-static plastic bags, non-anti-static bubble films, and rubber should be kept away from ESD sensitive devices and sensitive boards, at least 30cm away.

Expert Solution
Questions # 15:

The path method to create Och does not need to search the path on the network management, it can be found in the network management service management, and the single-site method must first start the search

Options:
A.

True

B.

False

Expert Solution
Questions # 16:

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

Options:
A.

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

B.

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

C.

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

D.

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

Expert Solution
Questions # 17:

Which of the following items can be included in the upgradeable boards of the PTN3900 NE upgrade operation?

Options:
A.

Main control board

B.

Cross Plate

C.

Business Processing Board

D.

Fan Board

Expert Solution
Questions # 18:

In order to determine whether the optical fiber lines and connectors on the wavelength division side are normal, which of the following loopback methods is most suitable?

Options:
A.

Client-side outer loopback

B.

Client-side Inloop

C.

WDM side outer loopback

D.

WDM side inner loopback

Expert Solution
Questions # 19:

Which of the following conditions will cause multiple channels to report BEFFEC-EXC alarms at the same time?

Options:
A.

The input optical power of the OTU board is too high or too low

B.

Optical fiber failure of optical cable or multiplexer

C.

The signal is lost too much in the transmission of line C

D.

Abnormal external environment

Expert Solution
Questions # 20:

Which of the following layers of overhead belong to the electrical layer overhead of OTN

Options:
A.

OPUK

B.

ODUK

C.

OCH

D.

OTUK

Expert Solution
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