QUESTION 81
The red box in the following figure shows the cable management frame of a case-shaped device. It is used to arrange cables.

A. TRUE
B. FALSE

Correct Answer: A
QUESTION 82
Before device installation, you must check whether the equipment room, cabinet, power supply, ground cables, optical cables, and associated facilities meet the installation requirements.

A. TRUE
B. FALSE

Correct Answer: A
QUESTION 83
The Web LCT is an NE-level management system for optical transmission networks. It implements all NE-level configuration and maintenance functions and supports the end-to-end creation and management of OCh trails.

A. TRUE
B. FALSE

Correct Answer: B
QUESTION 84
Which of the following is not a function of the NCE-T network management module?

A. Alarm, performance, and QoS management
B. E2E service management
C. Fiber/cable management
D. IP Route optimization Correct Answer: D QUESTION 85

When a logical board fails to be added to an NE on the NMS, which of the following are possible causes?

A. The board version is incompatible with the system control board version of the NE.
B. The physical board was not inserted.
C. Subrack attributes were not configured or were incorrectly configured.
D. The slot is occupied, or there is a board conflict.

Correct Answer: ABCD
QUESTION 86
Which of the following correctly describes the status of the board in the red box of the figure?

A. The board is not installed.
B. The physical board cannot be detected, but the logical board was added.
C. The board is in the running state. The physical board can be detected, and the logical board has been added.
D. The physical board can be detected, but the logical board has not been added.

Correct Answer: C
QUESTION 87
To set the attributes of an OTN electrical subrack, which of the following require a license for authorization?

A. Cross-connect capacity
B. Service type
C. IEEE 1588 V2
D. Subrack type

Correct Answer: AC
QUESTION 88
The specifications of an optical module on an OTN line board are “TXFP-C BAND-9.95~11.3Gbps–1dBm-2dBm–16dBm-LC-SM-40km”. Which of the following statements about this optical module is incorrect?

A. If the transmit optical power of is this optical module is lower than -2 dBm, you are advised to replace the optical module.
B. This optical module supports C-band tunable wavelengths.
C. If the input optical power is -4 dBm, you can add a 5 dB optical attenuator at the receive port.
D. This optical module can be used for gray optical line interconnection.

Correct Answer: A
QUESTION 89

The specifications of an optical module on an SDH line board are “eSFP-1310nm-125M~2.67G–2dBm-3dBm–28dBm-LC-40km”. Which of the following statements are correct?

A. To commission the line optical power, you must ensure that the receive optical power IS not overloaded.
B. If the transmit optical power of this optical module is lower than -2 dBm, you are advised to replace the optical module.
C. An optical power margin must be reserved to ensure that optical power fluctuations within a certain range do not affect existing services.
D. When the optical module is used is on a fiber link with a distance over 40 km, the DCM must be configured at the receive end.

Correct Answer: AC
QUESTION 90
Which of the following statements about creating client services in the OTN tributary-line separation scenario are incorrect?

A. To configure ODUk SNCP on a per-NE basis, you must select a tributary port as the source port and a line port as the sink port.
B. The operating wavelength configured for an OTN line board must be within the tunable wavelength range of the optical module installed on the board.
C. To configure 10GE LAN services, you must set parameter “Level” to “ODU2e”.
D. The service type configured for an OTN tributary board must match the optical module installed on the board.

Correct Answer: AC
QUESTION 91
Which of the following statements about configuring master-slave subrack management are correct?

A. Master-slave subrack configurations support tree, ring, and chain cascading modes.
B. In ring networking mode, master-slave subrack isolation is not supported. If the subrack ID is duplicate, boards in existing subracks will go offline.
C. In a master-slave subrack configuration, multiple subracks are displayed as one NE on the NMS.
D. In tree cascading mode, the master-slave subrack does not support protection function. If the subrack ID is duplicate, the boards in the existing subrack would go offline.

Correct Answer: ACD
QUESTION 92
Which of the following statements about fiber connection check is correct?

A. The prerequisite for connecting logical fibers is that physical fibers have been connected.
B. If logical fibers are incorrectly connected, they are displayed in red in the topology view of the NMS.
C. Logical fiber connections on the NMS must be consistent with the actual physical fiber connections.
D. When logical fiber connections are inconsistent with physical fiber connections, you can perform fiber synchronization and make them completely consistent.

Correct Answer: C
QUESTION 93
Which of the following statements about cabinet indicators is incorrect?

A. If the orange indicator is on, a major alarm has been generated on the device.
B. If the red indicator is on, a critical alarm has been generated on the device.
C. If the yellow indicator is on, a minor alarm has been generated on the device.
D. If the green indicator is on, no alarms have been generated on the device.

Correct Answer: A

QUESTION 94
Which of the following statements about software loopbacks is incorrect?

A. When a software loopback is configured on a board, services are interrupted and corresponding alarms such as LOOP_ALM are reported.
B. A software outloop can be used to test whether signal processing on the board is normal.
C. A software inloop loops back the processed signals from the transmit port to the receive port on the local device.
D. A software outoop loops back signals from the receive port on a board to the transmit port on the board before the board processes the signals.

Correct Answer: B
QUESTION 95
To query the active alarms of an NE on NCE, which of the following operations can be performed on the NE?

A. Browse history alarms
B. Clear alarms
C. Acknowledge alarms
D. Browse current alarms

Correct Answer: D
QUESTION 96
The following figure shows the networking of an SDH link. If an optical port on the line board at site A does not receive optical signals, which of the following is not a possible cause?

A. The optical fiber from site B to site A is broken.
B. The laser on the optical port of the line board at site B is turned off.
C. The line board at site B is powered off.
D. The laser on the optical port of the line board at site A is turned off.

Correct Answer: D
QUESTION 97
An optical fiber consists of a fiber core,                    and coating.
Correct Answer: cladding

QUESTION 98

In the OTUk frame overhead, the byte used for DCN communication is      . (Enter the abbreviation.)

Correct Answer: DCC

QUESTION 99

The OTN electrical-layer overheads consist of        , ODUk, OTUk, and frame alignment overheads. (Enter an acronym or abbreviation.)
Correct Answer: OPUk

QUESTION 100

The N220 board is a         -channel 10G OTN line board. (Enter only digits.)

Correct Answer: 2