When an optical fiber between node A and node B is broken, the FIU on node B detects the OTS_LOS alarm and inserts the OTS_BDI alarm to node A. The FIU on node A reports the OTS_BDI alarm. The line board on the downstream C node reports the OCh_SSF alarm.
A. TRUE
B. FALSE
In an OSN 550, the CXL slot houses a functional board that integrates the system control and communication (SCC) unit, cross-connect unit, and clock unit. The functional board is available in multiple types depending on the functions and access capabilities provided by the OSN 550.
A. TRUE
B. FALSE
Which of the following is the impact of changing the NE ID of OSN 3500 on the NMS?
A. Services are interrupted.
B. The device is restarted.
C. NE communication is interrupted.
D. The NE time is not synchronized.
When the U2000 data is backed up using scripts, the backup is fast because the backup files are small.
A. TRUE
B. FALSE
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.
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.
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.
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.
Which of the following is not an EVPLAN feature?
A. Bandwidth sharing
B. Forwarding based on MAC addresses
C. Point-to-point and point-to-multipoint topologies
D. Multipoint-to-multipoint topology
RSOH, MSOH, HPOH, and LPOH implement monitoring functions in the descending order of monitoring scope.
A. TRUE
B. FALSE
Which of the following bytes in the regenerator section overhead are associated with R-OOF and R-LOF? (Multiple Choice)
A. A1
B. A2
C. B1
D. B2
Which of the following maintenance signals is transmitted from a downstream site to an upstream site in OTN?
A. ATS
B. LCK
C. IAE
D. BDI
An Ethernet private line service is set up between HI (HQ) and H2 (branch) of enterprise H, and five VC12s are bound in the corresponding VCTRUNK. When one VC-12 fails, the Ethernet private line between HI and H2 is not interrupted. Therefore, which of the following statements is correct?
A. The LCAS function is enabled on the ports used by the Ethernet private line service between HI and H2.
B. The LCAS function is enabled on the VCTRUNK ports used by the Ethernet private line service between HI and H2.
C. The QinQ function is enabled on the ports used by the Ethernet private line service between HI and H2.
D. The QinQ function is enabled on the VCTRUNK ports used by the Ethernet private line service between HI and H2.
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