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Which of the following working windows is indicated by '2' in the optical module parameter L-64.2'?

A.
880 nm
A.
880 nm
Answers
B.
1310 nm
B.
1310 nm
Answers
C.
1550 nm
C.
1550 nm
Answers
D.
1510 nm
D.
1510 nm
Answers
Suggested answer: C

In the Windows operating system, the log files of the U2000 program are stored in the ( ) directory of the U2000 installation drive.

A.
/U2000/server
A.
/U2000/server
Answers
B.
/U2000/client/log
B.
/U2000/client/log
Answers
C.
/U2000/server/log
C.
/U2000/server/log
Answers
D.
/U2000/client
D.
/U2000/client
Answers
Suggested answer: C

When severely errored seconds (SESs) are present in the PM section at the ODUk layer, which of the following alarms is reported on the NMS?

A.
ODUk_PM_ES
A.
ODUk_PM_ES
Answers
B.
ODUk_PM_SES
B.
ODUk_PM_SES
Answers
C.
ODUk_PM_SESR
C.
ODUk_PM_SESR
Answers
D.
ODUk _PM _UAS
D.
ODUk _PM _UAS
Answers
Suggested answer: B

Which of the following are the differences between AU pointer and TU pointer? (Multiple Choice)

A.
Indication range
A.
Indication range
Answers
B.
Number of bits occupied by the pointer value
B.
Number of bits occupied by the pointer value
Answers
C.
Byte where the pointer value is stored
C.
Byte where the pointer value is stored
Answers
D.
Adjustment unit
D.
Adjustment unit
Answers
Suggested answer: A, C, D

LCK insertion has priority over AIS insertion. That is, if a user configures LCK insertion and the conditions of automatic AIS insertion are met, LCK is inserted.

A.
TRUE
A.
TRUE
Answers
B.
FALSE
B.
FALSE
Answers
Suggested answer: A

On the NMS, the NE performance monitoring time is set to () minutes and () hours,

A.
15, 12
A.
15, 12
Answers
B.
15, 24
B.
15, 24
Answers
C.
30, 12
C.
30, 12
Answers
D.
30, 24
D.
30, 24
Answers
Suggested answer: B

Which of the following is the multiplexing mode of SDH?

A.
Flexible mapping
A.
Flexible mapping
Answers
B.
Asynchronous multiplexing
B.
Asynchronous multiplexing
Answers
C.
Flexible mapping and asynchronous multiplexing
C.
Flexible mapping and asynchronous multiplexing
Answers
D.
Flexible mapping and synchronous multiplexing
D.
Flexible mapping and synchronous multiplexing
Answers
Suggested answer: D

When a working PQ1 board is faulty, the device performs TPS protection switching. Which of the following statements about the switching process are correct? (Multiple Choice)

A.
The cross-connect board detects that the PQ1 board is faulty through the board status bus.
A.
The cross-connect board detects that the PQ1 board is faulty through the board status bus.
Answers
B.
If the protection PQ1 board is normal, the cross-connect board sends a switching message to the D75S corresponding to the faulty PQ1 board through the switching control bus.
B.
If the protection PQ1 board is normal, the cross-connect board sends a switching message to the D75S corresponding to the faulty PQ1 board through the switching control bus.
Answers
C.
The D75S board responds to the switching message by transferring services to the shared protection bus and stopping sending services to the faulty PQ1 board.
C.
The D75S board responds to the switching message by transferring services to the shared protection bus and stopping sending services to the faulty PQ1 board.
Answers
D.
The protection PQ1 board receives and processes the services that are transferred from the D75S board to the protection bus to complete the protection switching.
D.
The protection PQ1 board receives and processes the services that are transferred from the D75S board to the protection bus to complete the protection switching.
Answers
Suggested answer: A, B, C, D

Which of the following is the meaning of 'L' in the optical module parameter 'L-64.2'?

A.
Transmission distance
A.
Transmission distance
Answers
B.
Dispersion coefficient
B.
Dispersion coefficient
Answers
C.
Transmit wavelength
C.
Transmit wavelength
Answers
D.
Receive wavelength
D.
Receive wavelength
Answers
Suggested answer: A

The PRBS can be used to test whether an SDH service is normal and whether the protection switching function is normal.

A.
TRUE
A.
TRUE
Answers
B.
FALSE
B.
FALSE
Answers
Suggested answer: A
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